#!/usr/bin/perl

# $Id$

# Database Updater
# This script checks for required updates to the database.

# Part of the Koha Library Software www.koha.org
# Licensed under the GPL.

# Bugs/ToDo:
# - Would also be a good idea to offer to do a backup at this time...

# NOTE:  If you do something more than once in here, make it table driven.
use strict;

# CPAN modules
use DBI;
use Getopt::Long;
# Koha modules
use C4::Context;

use MARC::Record;
use MARC::File::XML ( BinaryEncoding => 'utf8' );
 
# FIXME - The user might be installing a new database, so can't rely
# on /etc/koha.conf anyway.

my $debug = 0;

my (
    $sth, $sti,
    $query,
    %existingtables,    # tables already in database
    %types,
    $table,
    $column,
    $type, $null, $key, $default, $extra,
    $prefitem,          # preference item in systempreferences table
);

my $silent;
GetOptions(
    's' =>\$silent
    );
my $dbh = C4::Context->dbh;
print "connected to your DB. Checking & modifying it\n" unless $silent;
$|=1; # flushes output

#-------------------
# Defines

# Tables to add if they don't exist
my %requiretables = (
    action_logs     => "(
                    `timestamp` TIMESTAMP NOT NULL ,
                    `user` INT( 11 ) NOT NULL ,
                    `module` TEXT default '',
                    `action` TEXT default '' ,
                    `object` INT(11) NULL ,
                    `info` TEXT default '' ,
                    PRIMARY KEY ( `timestamp` , `user` )
                )",
    letter        => "(
                    module varchar(20) NOT NULL default '',
                    code varchar(20) NOT NULL default '',
                    name varchar(100) NOT NULL default '',
                    title varchar(200) NOT NULL default '',
                    content text,
                    PRIMARY KEY  (module,code)
                )",
    alert        =>"(
                    alertid int(11) NOT NULL auto_increment,
                    borrowernumber int(11) NOT NULL default '0',
                    type varchar(10) NOT NULL default '',
                    externalid varchar(20) NOT NULL default '',
                    PRIMARY KEY  (alertid),
                    KEY borrowernumber (borrowernumber),
                    KEY type (type,externalid)
                )",
    opac_news => "(
                `idnew` int(10) unsigned NOT NULL auto_increment,
                `title` varchar(250) NOT NULL default '',
                `new` text NOT NULL,
                `lang` varchar(4) NOT NULL default '',
                `timestamp` timestamp NOT NULL default CURRENT_TIMESTAMP,
                PRIMARY KEY  (`idnew`)
                )",
    repeatable_holidays => "(
                `id` int(11) NOT NULL auto_increment,
                `branchcode` varchar(4) NOT NULL default '',
                `weekday` smallint(6) default NULL,
                `day` smallint(6) default NULL,
                `month` smallint(6) default NULL,
                `title` varchar(50) NOT NULL default '',
                `description` text NOT NULL,
                PRIMARY KEY  (`id`)
                )",
    special_holidays => "(
                `id` int(11) NOT NULL auto_increment,
                `branchcode` varchar(4) NOT NULL default '',
                `day` smallint(6) NOT NULL default '0',
                `month` smallint(6) NOT NULL default '0',
                `year` smallint(6) NOT NULL default '0',
                `isexception` smallint(1) NOT NULL default '1',
                `title` varchar(50) NOT NULL default '',
                `description` text NOT NULL,
                PRIMARY KEY  (`id`)
                )",
    overduerules    =>"(`branchcode` varchar(255) NOT NULL default '',
                    `categorycode` char(2) NOT NULL default '',
                    `delay1` int(4) default '0',
                    `letter1` varchar(20) default NULL,
                    `debarred1` char(1) default '0',
                    `delay2` int(4) default '0',
                    `debarred2` char(1) default '0',
                    `letter2` varchar(20) default NULL,
                    `delay3` int(4) default '0',
                    `letter3` varchar(20) default NULL,
                    `debarred3` int(1) default '0',
                    PRIMARY KEY  (`branchcode`,`categorycode`)
                    )",
    cities            => "(`cityid` int auto_increment,
                        `city_name` char(100) NOT NULL,
                        `city_zipcode` char(20),
                        PRIMARY KEY (`cityid`)
                    )",
    roadtype            => "(`roadtypeid` int auto_increment,
                        `road_type` char(100) NOT NULL,
                        PRIMARY KEY (`roadtypeid`)
                    )",

    labels                     => "(
                labelid int(11) NOT NULL auto_increment,
                               itemnumber varchar(100) NOT NULL default '',
                               timestamp timestamp(14) NOT NULL,
                               PRIMARY KEY  (labelid)
                               )",

    labels_conf                => "(
                id int(4) NOT NULL auto_increment,
                               barcodetype char(100) default '',
                               title tinyint(1) default '0',
                               isbn tinyint(1) default '0',
                               itemtype tinyint(1) default '0',
                               barcode tinyint(1) default '0',
                               dewey tinyint(1) default '0',
                               class tinyint(1) default '0',
                               author tinyint(1) default '0',
                               papertype char(100) default '',
                               startrow int(2) default NULL,
                               PRIMARY KEY  (id)
                               )",
       reviews                  => "(
                            reviewid integer NOT NULL auto_increment,
                            borrowernumber integer,
                            biblionumber integer,
                            review text,
                            approved tinyint,
                            datereviewed datetime,
                            PRIMARY KEY (reviewid)
                            )",
    subscriptionroutinglist=>"(
                             routingid integer NOT NULL auto_increment,
                             borrowernumber integer,
                             ranking integer,
                             subscriptionid integer,
                            PRIMARY KEY (routingid)
                             )",

    notifys    => "(
              notify_id int(11) NOT NULL default '0',
                `borrowernumber` int(11) NOT NULL default '0',
              `itemnumber` int(11) NOT NULL default '0',
              `notify_date` date NOT NULL default '0000-00-00',
                      `notify_send_date` date default NULL,
                      `notify_level` int(1) NOT NULL default '0',
                      `method` varchar(20) NOT NULL default ''
              )",

   charges    => "(
              `charge_id` varchar(5) NOT NULL default '',
                `description` text NOT NULL,
                `amount` decimal(28,6) NOT NULL default '0.000000',
                          `min` int(4) NOT NULL default '0',
                `max` int(4) NOT NULL default '0',
                          `level` int(1) NOT NULL default '0',
                          PRIMARY KEY  (`charge_id`)
              )",
    tags => "(
        `entry` varchar(255) NOT NULL default '',
        `weight` bigint(20) NOT NULL default '0',
         PRIMARY KEY  (`entry`)
    )
    ",
   zebraqueue    => "(
                `id` int NOT NULL auto_increment,
                `biblio_auth_number` int NOT NULL,
                `operation` char(20) NOT NULL,
                `server` char(20) NOT NULL ,
                PRIMARY KEY  (`id`)
              ) ENGINE=InnoDB DEFAULT CHARSET=utf8 COLLATE=utf8_general_ci AUTO_INCREMENT=1",

);

my %requirefields = (
    subscription => { 'letter' => 'char(20) NULL', 'distributedto' => 'text NULL', 'firstacquidate'=>'date NOT NULL','irregularity'=>'TEXT NULL default \'\'','numberpattern'=>'TINYINT(3) NULL default 0', 'callnumber'=>'text NULL', 'hemisphere' =>'TINYINT(3) NULL default 0', 'issuesatonce'=>'TINYINT(3) NOT NULL default 1',  'branchcode' =>'varchar(12) NOT NULL default \'\'', 'manualhistory'=>'TINYINT(1) NOT NULL default 0','internalnotes'=>'LONGTEXT NULL default \'\''},
    itemtypes => { 'imageurl' => 'char(200) NULL'},
    aqbookfund => { 'branchcode' => 'varchar(4) NULL'},
    aqbudget => { 'branchcode' => 'varchar(4) NULL'},
    auth_header => { 'marc' => 'BLOB NOT NULL', 'linkid' => 'BIGINT(20) NULL'},
    auth_subfield_structure =>{ 'hidden' => 'TINYINT(3) NOT NULL default 0', 'kohafield' => 'VARCHAR(45) NOT NULL', 'linkid' =>  'TINYINT(1) NOT NULL default 0', 'isurl' => 'TINYINT(1)', 'frameworkcode'=>'VARCHAR(8) NOT  NULL'},
    marc_breeding => { 'isbn' => 'varchar(13) NOT NULL'},
    serial =>{ 'publisheddate' => 'date', 'claimdate' => 'date', 'itemnumber'=>'text NULL','routingnotes'=>'text NULL',},
    statistics => { 'associatedborrower' => 'integer'},
    z3950servers =>{  "name" =>"text",  "description" => "text NOT NULL",
                    "position" =>"enum('primary','secondary','') NOT NULL default 'primary'",  "icon" =>"text",
                    "type" =>"enum('zed','opensearch') NOT NULL default 'zed'",
                    },
    issues =>{ 'issuedate'=>"date NOT NULL default '0000-00-00'", },

#    tablename        => { 'field' => 'fieldtype' },
);

# Enter here the table to delete.
my @TableToDelete = qw(
    additionalauthors
    bibliosubject
    bibliosubtitle
    bibliothesaurus
);

my %uselessfields = (
# tablename => "field1,field2",
    borrowers => "suburb,altstreetaddress,altsuburb,altcity,studentnumber,school,area,preferredcont,altcp",
    deletedborrowers=> "suburb,altstreetaddress,altsuburb,altcity,studentnumber,school,area,preferredcont,altcp",
    );
# the other hash contains other actions that can't be done elsewhere. they are done
# either BEFORE of AFTER everything else, depending on "when" entry (default => AFTER)

# The tabledata hash contains data that should be in the tables.
# The uniquefieldrequired hash entry is used to determine which (if any) fields
# must not exist in the table for this row to be inserted.  If the
# uniquefieldrequired entry is already in the table, the existing data is not
# modified, unless the forceupdate hash entry is also set.  Fields in the
# anonymous "forceupdate" hash will be forced to be updated to the default
# values given in the %tabledata hash.

my %tabledata = (
# tablename => [
#    {    uniquefielrequired => 'fieldname', # the primary key in the table
#        fieldname => fieldvalue,
#        fieldname2 => fieldvalue2,
#    },
# ],
    systempreferences => [
        {
            uniquefieldrequired => 'variable',
            variable            => 'useDaysMode',
            value               => 'Calendar',
            forceupdate         => { 'explanation' => 1,
                                     'type' => 1},
            explanation            => 'How to calculate return dates : Calendar means holidays will be controled, Days means the return date don\'t depend on holidays',
            type        => 'Choice',
            options        => 'Calendar|Days'
        },
        {
            uniquefieldrequired => 'variable',
            variable            => 'BorrowersTitles',
            value               => 'Mr|Mrs|Miss|Ms',
            forceupdate         => { 'explanation' => 1,
                                     'type' => 1},
            explanation         => 'List all Titles for borrowers',
            type                => 'free',
        },
	{
            uniquefieldrequired => 'variable',
            variable            => 'BorrowerMandatoryField',
            value               => 'cardnumber|surname|address',
            forceupdate         => { 'explanation' => 1,
                                     'type' => 1},
            explanation         => 'List all mandatory fields for borrowers',
            type                => 'free',
        },
        {
            uniquefieldrequired => 'variable',
            variable            => 'borrowerRelationship',
            value               => 'father|mother,grand-mother',
            forceupdate         => { 'explanation' => 1,
                                     'type' => 1},
            explanation         => 'The relationships between a guarantor & a guarantee (separated by | or ,)',
            type                => 'free',
        },
        {
            uniquefieldrequired => 'variable',
            variable            => 'ReservesMaxPickUpDelay',
            value               => '10',
            forceupdate         => { 'explanation' => 1,
                                     'type' => 1},
            explanation         => 'Maximum delay to pick up a reserved document',
            type                => 'free',
        },
        {
            uniquefieldrequired => 'variable',
            variable            => 'TransfersMaxDaysWarning',
            value               => '3',
            forceupdate         => { 'explanation' => 1,
                                     'type' => 1},
            explanation         => 'Max delay before considering the transfer has potentialy a problem',
            type                => 'free',
        },
        {
            uniquefieldrequired => 'variable',
            variable            => 'memberofinstitution',
            value               => '0',
            forceupdate         => { 'explanation' => 1,
                                     'type' => 1},
            explanation         => 'Are your patrons members of institutions',
            type                => 'YesNo',
        },
    {
            uniquefieldrequired => 'variable',
            variable            => 'ReadingHistory',
            value               => '0',
            forceupdate         => { 'explanation' => 1,
                                     'type' => 1},
            explanation         => 'Allow reading record info retrievable from issues and oldissues tables',
            type                => 'YesNo',
        },
    {
            uniquefieldrequired => 'variable',
            variable            => 'IssuingInProcess',
            value               => '0',
            forceupdate         => { 'explanation' => 1,
                                     'type' => 1},
            explanation         => 'Allow no debt alert if the patron is issuing item that accumulate debt',
            type                => 'YesNo',
        },
    {
            uniquefieldrequired => 'variable',
            variable            => 'AutomaticItemReturn',
            value               => '1',
            forceupdate         => { 'explanation' => 1,
                                     'type' => 1},
            explanation         => 'This Variable allow or not to return automaticly to his homebranch',
            type                => 'YesNo',
        },
    {
            uniquefieldrequired => 'variable',
            variable            => 'reviewson',
            value               => '0',
            forceupdate         => { 'explanation' => 1,
                                     'type' => 1},
            explanation         => 'Allows patrons to submit reviews from the opac',
            type                => 'YesNo',
        },
    {
            uniquefieldrequired => 'variable',
            variable            => 'intranet_includes',
            value               => 'includes',
            forceupdate         => { 'explanation' => 1,
                                     'type' => 1},
            explanation         => 'The includes directory you want for specific look of Koha (includes or includes_npl for example)',
            type                => 'Free',
        },
        {
            uniquefieldrequired => 'variable',
            variable            => 'AutoLocation',
            value               => '0',
            forceupdate         => { 'explanation' => 1,
                                     'type' => 1},
            explanation         => 'switch to activate or not Autolocation, if Yes, the Librarian can\'t change his location, it\'s defined by branchip',
            type                => 'YesNo',
        },
        {
            uniquefieldrequired => 'variable',
            variable            => 'serialsadditems',
            value               => '0',
            forceupdate         => {
                'explanation' => 1,
                'type' => 1
            },
            explanation => 'If set, a new item will be automatically added when receiving an issue',
            type => 'YesNo',
        },
        {
            uniquefieldrequired => 'variable',
            variable            => 'expandedSearchOption',
            value               => '0',
            forceupdate         => {
                'explanation' => 1,
                'type' => 1
            },
            explanation => 'search among marc field',
            type => 'YesNo',
        },
       {
            uniquefieldrequired => 'variable',
            variable            => 'RequestOnOpac',
            value               => '1',
            forceupdate         => { 'explanation' => 1,
                                     'type' => 1},
            explanation         => 'option to allow reserves on opac',
            type                => 'YesNo',
        },
       {
            uniquefieldrequired => 'variable',
            variable            => 'OpacCloud',
            value               => '1',
            forceupdate         => { 'explanation' => 1,
                                     'type' => 1},
            explanation         => 'Enable / Disable cloud link on OPAC (Require to run misc/cronjobs/build_browser_and_cloud.pl on the server)',
            type                => 'YesNo',
        },
       {
            uniquefieldrequired => 'variable',
            variable            => 'OpacBrowser',
            value               => '1',
            forceupdate         => { 'explanation' => 1,
                                     'type' => 1},
            explanation         => 'Enable/Disable browser link on OPAC (Require to run misc/cronjobs/build_browser_and_cloud.pl on the server)',
            type                => 'YesNo',
        },
       {
            uniquefieldrequired => 'variable',
            variable            => 'OpacTopissue',
            value               => '1',
            forceupdate         => { 'explanation' => 1,
                                     'type' => 1},
            explanation         => 'Enable / Disable the top issue link on OPAC',
            type                => 'YesNo',
        },
       {
            uniquefieldrequired => 'variable',
            variable            => 'OpacAuthorities',
            value               => '1',
            forceupdate         => { 'explanation' => 1,
                                     'type' => 1},
            explanation         => 'Enable / Disable the search authority link on OPAC',
            type                => 'YesNo',
        },
        {
            uniquefieldrequired => 'variable',
            variable            => 'CataloguingLog',
            value               => '0',
            forceupdate         => {'explanation' => 1, 'type' => 1},
            explanation         => 'Active this if you want to log cataloguing action.',
            type                => 'YesNo',
        },
        {
            uniquefieldrequired => 'variable',
            variable            => 'BorrowersLog',
            value               => '0',
            forceupdate         => {'explanation' => 1, 'type' => 1},
            explanation         => 'Active this if you want to log borrowers edition/creation/deletion...',
            type                => 'YesNo',
        },
        {
            uniquefieldrequired => 'variable',
            variable            => 'SubscriptionLog',
            value               => '0',
            forceupdate         => {'explanation' => 1, 'type' => 1},
            explanation         => 'Active this if you want to log Subscription action',
            type                => 'YesNo',
        },
        {
            uniquefieldrequired => 'variable',
            variable            => 'IssueLog',
            value               => '0',
            forceupdate         => {'explanation' => 1, 'type' => 1},
            explanation         => 'Active this if you want to log issue.',
            type                => 'YesNo',
        },
        {
            uniquefieldrequired => 'variable',
            variable            => 'ReturnLog',
            value               => '0',
            forceupdate         => {'explanation' => 1, 'type' => 1},
            explanation         => 'Active this if you want to log the circulation return',
            type                => 'YesNo',
        },
        {
            uniquefieldrequired => 'variable',
            variable            => 'Version',
            value               => '3.0',
            forceupdate         => {'explanation' => 1, 'type' => 1},
            explanation         => 'Koha Version',
            type                => 'Free',
        },
        {   
            uniquefieldrequired => 'variable',
            variable            => 'LetterLog',
            value               => '0',
            forceupdate         => {'explanation' => 1, 'type' => 1},
            explanation         => 'Active this if you want to log all the letter sent',
            type                => 'YesNo',
        },
        {
            uniquefieldrequired => 'variable',
            variable            => 'FinesLog',
            value               => '0',
            forceupdate         => {'explanation' => 1, 'type' => 1},
            explanation         => 'Active this if you want to log fines',
            type                => 'YesNo',
        },
        {
            uniquefieldrequired => 'variable',
            variable            => 'NoZebra',
            value               => '0',
            forceupdate         => {'explanation' => 1, 'type' => 1},
            explanation         => 'Active this if you want NOT to use zebra (large libraries should avoid this parameters)',
            type                => 'YesNo',
        },
        {
            uniquefieldrequired => 'variable',
            variable            => 'NoZebraIndexes',
            value               => '0',
            forceupdate         => {'explanation' => 1, 'type' => 1},
            explanation         => "Enter a specific hash for NoZebra indexes. Enter : 'indexname' => '100a,245a,500*','index2' => '...'",
            type                => 'Free',
        },
    ],
    userflags => [
        {
            uniquefieldrequired => 'bit',
            bit                 => '14',
            flag                => 'editauthorities',
            flagdesc            => 'allow to edit authorities',
            defaulton           => '0',
        },
        {
            uniquefieldrequired => 'bit',
            bit                 => '15',
            flag                 => 'serials',
            flagdesc            => 'allow to manage serials subscriptions',
            defaulton           => '0',
        },
        {
            uniquefieldrequired => 'bit',
            bit                 => '16',
            flag                 => 'reports',
            flagdesc            => 'allow to access to the reports module',
            defaulton           => '0',
        },
    ],
    authorised_values => [
        {
            uniquefieldrequired => 'id',
            category            => 'SUGGEST',
            authorised_value    => 'Not enough budget',
            lib                 => 'This book it too much expensive',
        }
    ],
);

my %fielddefinitions = (
# fieldname => [
#    {          field => 'fieldname',
#             type    => 'fieldtype',
#             null    => '',
#             key     => '',
#             default => ''
#         },
#     ],
    aqbasket =>  [
        {
            field    => 'booksellerid',
            type    => 'int(11)',
            null    => 'NOT NULL',
            key        => '',
            default    => '1',
            extra    => '',
        },
    ],
    aqbooksellers =>  [
        {
            field    => 'id',
            type    => 'int(11)',
            null    => 'NOT NULL',
            key        => 'PRI',
            default    => '',
            extra    => 'auto_increment',
        },
        {
            field    => 'listprice',
            type    => 'varchar(10)',
            null    => 'NULL',
            key        => '',
            default    => '',
            extra    => '',
        },
        {
            field    => 'invoiceprice',
            type    => 'varchar(10)',
            null    => 'NULL',
            key        => '',
            default    => '',
            extra    => '',
        },
    ],
    
    accountlines =>  [
        {
            field    => 'notify_id',
            type    => 'int(11)',
            null    => 'NOT NULL',
            key        => '',
            default    => '0',
            extra    => '',
        },
        {
            field    => 'notify_level',
            type    => 'int(2)',
            null    => 'NOT NULL',
            key        => '',
            default    => '0',
            extra    => '',
        },
    
    ],
    
    borrowers => [
        {    field => 'firstname',
             type => 'text',
             null => 'NULL',
         },
        {    field => 'initials',
             type => 'text',
             null => 'NULL',
         },
        {    field => 'B_email',
             type => 'text',
             null => 'NULL',
             after => 'B_zipcode',
         },
         {
            field => 'streetnumber', # street number (hidden if streettable table is empty)
            type => 'char(10)',
            null => 'NULL',
            after => 'initials',
        },
        {
            field => 'streettype', # street table, list builded from a system table
            type => 'char(50)',
            null => 'NULL',
            after => 'streetnumber',
        },
        {    field => 'phone',
             type => 'text',
             null => 'NULL',
         },
        {
            field => 'B_streetnumber', # street number (hidden if streettable table is empty)
            type => 'char(10)',
            null => 'NULL',
            after => 'fax',
        },
        {
            field => 'B_streettype', # street table, list builded from a system table
            type => 'char(50)',
            null => 'NULL',
            after => 'B_streetnumber',
        },
        {
            field => 'phonepro',
            type => 'text',
            null => 'NULL',
            after => 'fax',
        },
        {
            field => 'address2', # complement address
            type => 'text',
            null => 'NULL',
            after => 'address',
        },
        {
            field => 'emailpro',
            type => 'text',
            null => 'NULL',
            after => 'fax',
        },
        {
            field => 'contactfirstname', # contact's firstname
            type => 'text',
            null => 'NULL',
            after => 'contactname',
        },
        {
            field => 'contacttitle', # contact's title
            type => 'text',
            null => 'NULL',
            after => 'contactfirstname',
        },
        {
            field => 'branchcode',
            type  => 'varchar(10)',
            null  => 'NOT NULL',
            default    => '',
            extra => '',
        },
        {
            field => 'categorycode',
            type  => 'varchar(10)',
            null  => 'NOT NULL',
            default    => '',
            extra => '',
        }
    ],
    
    biblioitems =>  [
        {
            field    => 'lcsort',
            type    => 'varchar(25)',
            null    => 'NULL',
            key        => '',
            default    => '',
            extra    => '',
        },
        {
            field    => 'ccode',
            type    => 'varchar(4)',
            null    => 'NULL',
            key        => '',
            default    => '',
            extra    => '',
        },
        {
            field   => 'dewey',
            type    => 'varchar(30)',
            null    => 'null',
            default => '',
            extra   => '',
        },
    ],
    deletedbiblioitems => [
        {
            field   => 'dewey',
            type    => 'varchar(30)',
            null    => 'null',
            default => '',
            extra   => '',
        },
    ],
    branches =>  [
        {
            field    => 'branchip',
            type    => 'varchar(15)',
            null    => 'NULL',
            key        => '',
            default    => '',
            extra    => '',
        },
        {
            field    => 'branchprinter',
            type    => 'varchar(100)',
            null    => 'NULL',
            key        => '',
            default    => '',
            extra    => '',
        },
        {
            field   => 'branchcode',
            type    => 'varchar(10)',
            null    => 'NOT NULL',
            default => '',
            extra   => '',
        }
    ],
    branchtransfers =>[
        {
            field   => 'frombranch',
            type    => 'VARCHAR(10)',
            null    => 'NOT NULL',
            key     => '',
            default => '',
            extra   => '',
        },
        {
            field   => 'tobranch',
            type    => 'VARCHAR(10)',
            null    => 'NOT NULL',
            key     => '',
            default => '',
        }
    ],
    
    categories =>  [
        {
            field    => 'category_type',
            type    => 'char(1)',
            null    => 'NOT NULL',
            key        => '',
            default    => 'A',
            extra    => '',
        },
        {
            field   => 'categorycode',
            type    => 'varchar(10)',
            null    => 'NOT NULL',
            key     => 'PRI',
            default => '',
            extra   => '',
        },
    ],
    
    deletedborrowers => [
        {    field => 'firstname',
             type => 'text',
             null => 'NULL',
         },
        {    field => 'initials',
             type => 'text',
             null => 'NULL',
         },
        {    field => 'B_email',
             type => 'text',
             null => 'NULL',
             after => 'B_zipcode',
         },
         {
            field => 'streetnumber', # street number (hidden if streettable table is empty)
            type => 'char(10)',
            null => 'NULL',
            after => 'initials',
        },
        {
            field => 'streettype', # street table, list builded from a system table
            type => 'char(50)',
            null => 'NULL',
            after => 'streetnumber',
        },
        {    field => 'phone',
             type => 'text',
             null => 'NULL',
         },
         {
            field => 'B_streetnumber', # street number (hidden if streettable table is empty)
            type => 'char(10)',
            null => 'NULL',
            after => 'fax',
        },
        {
            field => 'B_streettype', # street table, list builded from a system table
            type => 'char(50)',
            null => 'NULL',
            after => 'B_streetnumber',
        },
        {
            field => 'phonepro',
            type => 'text',
            null => 'NULL',
            after => 'fax',
        },
        {
            field => 'address2', # complement address
            type => 'text',
            null => 'NULL',
            after => 'address',
        },
        {
            field => 'emailpro',
            type => 'text',
            null => 'NULL',
            after => 'fax',
        },
        {
            field => 'contactfirstname', # contact's firstname
            type => 'text',
            null => 'NULL',
            after => 'contactname',
        },
        {
            field => 'contacttitle', # contact's title
            type => 'text',
            null => 'NULL',
            after => 'contactfirstname',
        },
    ],
    
    issues =>  [
        {
            field    => 'borrowernumber',
            type    => 'int(11)',
            null    => 'NULL', # can be null when a borrower is deleted and the foreign key rule executed
            key        => '',
            default    => '',
            extra    => '',
        },
        {
            field    => 'itemnumber',
            type    => 'int(11)',
            null    => 'NULL', # can be null when a borrower is deleted and the foreign key rule executed
            key        => '',
            default    => '',
            extra    => '',
        },
        {
            field   => 'branchcode',
            type    => 'varchar(10)',
            null    => 'NULL',
            key     => '',
            default => '',
            extra   => '',
        },
        {
            field   => 'issuedate',
            type    => 'date',
            null    => '',
            key     => '',
            default => '0000-00-00',
            extra   => '',
        },
    ],
    
    items => [
        {
            field    => 'onloan',
            type    => 'date',
            null    => 'NULL',
            key        => '',
            default    => '0000-00-00',
            extra    => '',
        },
        {
            field    => 'cutterextra',
            type    => 'varchar(45)',
            null    => 'NULL',
            key        => '',
            default    => '',
            extra    => '',
        },
        {
            field    => 'issue_date',
            type    => 'date',
            null    => 'NULL',
            key        => '',
            default    => '',
            extra    => '',
        },
        {
            field    => 'homebranch',
            type    => 'varchar(10)',
            null    => 'NULL',
            key        => '',
            default    => '',
            extra    => '',
        },
        {
            field    => 'holdingbranch',
            type    => 'varchar(10)',
            null    => 'NULL',
            key        => '',
            default    => '',
            extra    => '',
        },
        {
            field    => 'itype',
            type    => 'varchar(10)',
            null    => 'NULL',
            key        => '',
            default    => '',
            extra    => '',
        },
    ],
    itemtypes => [
        {
            field  => 'itemtype',
            type   => 'varchar(10)',
            default    => '',
            null   => 'NOT NULL',
            key    => 'PRI',
            extra  => 'UNIQUE',
        },
        {
            field  => 'summary',
            type   => 'TEXT',
            null   => 'NULL',
            key    => '',
            extra  => '',
        },
    ],
    marc_breeding => [
        {
            field => 'marc',
            type  => 'LONGBLOB',
            null  => 'NULL',
            key    => '',
            extra  => '',
        }
    ],
    marc_subfield_structure => [
        {
            field => 'defaultvalue',
            type  => 'TEXT',
            null  => 'NULL',
            key    => '',
            extra  => '',
        }
    ],
    opac_news => [
        {
            field  => 'expirationdate',
            type   => 'date',
            null   => 'null',
            key    => '',
            extra  => '',
        },
        {
            field   => 'number',
            type    => 'int(11)',
            null    => 'NULL',
            key     => '',
            default => '0',
            extra   => '',
        },
    ],
    reserves =>  [
        {
            field    => 'waitingdate',
            type    => 'date',
            null    => 'NULL',
            key        => '',
            default    => '',
            extra    => '',
        },
    ],
    serial => [
        {
            field   => 'notes',
            type    => 'TEXT',
            null    => 'NULL',
            key     => '',
            default => '',
            extra   => ''
        },
    ],
    shelfcontents => [
        {
            field => 'dateadded',
            type => 'timestamp',
            null    => 'NULL',
        },
    ],
    systempreferences =>  [
        {
            field    => 'value',
            type    => 'text',
            null    => 'NULL',
            key        => '',
            default    => '',
            extra    => '',
        },
        {
            field    => 'explanation',
            type    => 'text',
            null    => 'NULL',
            key        => '',
            default    => '',
            extra    => '',
        },
    ],
    suggestions => [
        {
            field   => 'reason',
            type    => 'text',
            null    => 'NULL',
            key     => ''  ,
            default => '',
            extra   =>    '',
        }
    ],
);

my %indexes = (
#    table => [
#         {    indexname => 'index detail'
#         }
#    ],
    aqbooksellers => [
        {    indexname => 'PRIMARY',
            content => 'id',
            type => 'PRI',
        }
    ],
    aqbasket => [
        {    indexname => 'booksellerid',
            content => 'booksellerid',
        },
    ],
    aqorders => [
        {    indexname => 'basketno',
            content => 'basketno',
        },
    ],
    aqorderbreakdown => [
        {    indexname => 'ordernumber',
            content => 'ordernumber',
        },
        {    indexname => 'bookfundid',
            content => 'bookfundid',
        },
    ],
    biblioitems => [
        {    indexname => 'isbn',
            content => 'isbn',
        },
        {    indexname => 'publishercode',
            content => 'publishercode',
        },
    ],
    branches => [
        {
            indexname => 'branchcode',
            content   => 'branchcode',
            type => 'PRI',
        }
    ],
    branchrelations => [
        {
            indexname => 'PRIMARY',
            content => 'categorycode',
            type => 'PRI',
        }
    ],
    branchrelations => [
        {    indexname => 'PRIMARY',
            content => 'branchcode,categorycode',
            type => 'PRI',
        },
        {    indexname => 'branchcode',
            content => 'branchcode',
        },
        {    indexname => 'categorycode',
            content => 'categorycode',
        }
    ],
    currency => [
        {    indexname => 'PRIMARY',
            content => 'currency',
            type => 'PRI',
        }
    ],
    categories => [
        {
            indexname => 'categorycode',
            content   => 'categorycode',
        }
    ],
    items => [
        {    indexname => 'homebranch',
            content => 'homebranch',
        },
        {    indexname => 'holdingbranch',
            content => 'holdingbranch',
        }
    ],
    itemtypes => [
        {
            indexname => 'itemtype',
            content   => 'itemtype',
        }
    ],
    shelfcontents => [
        {    indexname => 'shelfnumber',
            content => 'shelfnumber',
        },
        {    indexname => 'itemnumber',
            content => 'itemnumber',
        }
    ],
	userflags => [
		{ 	indexname => 'PRIMARY',
			content => 'bit',
			type => 'PRI',
		}
	]
);

my %foreign_keys = (
#    table => [
#         {    key => 'the key in table' (must be indexed)
#            foreigntable => 'the foreigntable name', # (the parent)
#            foreignkey => 'the foreign key column(s)' # (in the parent)
#            onUpdate => 'CASCADE|SET NULL|NO ACTION| RESTRICT',
#            onDelete => 'CASCADE|SET NULL|NO ACTION| RESTRICT',
#         }
#    ],
    branchrelations => [
        {    key => 'branchcode',
            foreigntable => 'branches',
            foreignkey => 'branchcode',
            onUpdate => 'CASCADE',
            onDelete => 'CASCADE',
        },
        {    key => 'categorycode',
            foreigntable => 'branchcategories',
            foreignkey => 'categorycode',
            onUpdate => 'CASCADE',
            onDelete => 'CASCADE',
        },
    ],
    shelfcontents => [
        {    key => 'shelfnumber',
            foreigntable => 'bookshelf',
            foreignkey => 'shelfnumber',
            onUpdate => 'CASCADE',
            onDelete => 'CASCADE',
        },
        {    key => 'itemnumber',
            foreigntable => 'items',
            foreignkey => 'itemnumber',
            onUpdate => 'CASCADE',
            onDelete => 'CASCADE',
        },
    ],
    # onDelete is RESTRICT on reference tables (branches, itemtype) as we don't want items to be
    # easily deleted, but branches/itemtype not too easy to empty...
    biblioitems => [
        {    key => 'biblionumber',
            foreigntable => 'biblio',
            foreignkey => 'biblionumber',
            onUpdate => 'CASCADE',
            onDelete => 'CASCADE',
        },
        {    key => 'itemtype',
            foreigntable => 'itemtypes',
            foreignkey => 'itemtype',
            onUpdate => 'CASCADE',
            onDelete => 'RESTRICT',
        },
    ],
    items => [
        {    key => 'biblioitemnumber',
            foreigntable => 'biblioitems',
            foreignkey => 'biblioitemnumber',
            onUpdate => 'CASCADE',
            onDelete => 'CASCADE',
        },
        {    key => 'homebranch',
            foreigntable => 'branches',
            foreignkey => 'branchcode',
            onUpdate => 'CASCADE',
            onDelete => 'RESTRICT',
        },
        {    key => 'holdingbranch',
            foreigntable => 'branches',
            foreignkey => 'branchcode',
            onUpdate => 'CASCADE',
            onDelete => 'RESTRICT',
        },
    ],
    aqbasket => [
        {    key => 'booksellerid',
            foreigntable => 'aqbooksellers',
            foreignkey => 'id',
            onUpdate => 'CASCADE',
            onDelete => 'RESTRICT',
        },
    ],
    aqorders => [
        {    key => 'basketno',
            foreigntable => 'aqbasket',
            foreignkey => 'basketno',
            onUpdate => 'CASCADE',
            onDelete => 'CASCADE',
        },
        {    key => 'biblionumber',
            foreigntable => 'biblio',
            foreignkey => 'biblionumber',
            onUpdate => 'SET NULL',
            onDelete => 'SET NULL',
        },
    ],
    aqbooksellers => [
        {    key => 'listprice',
            foreigntable => 'currency',
            foreignkey => 'currency',
            onUpdate => 'CASCADE',
            onDelete => 'CASCADE',
        },
        {    key => 'invoiceprice',
            foreigntable => 'currency',
            foreignkey => 'currency',
            onUpdate => 'CASCADE',
            onDelete => 'CASCADE',
        },
    ],
    aqorderbreakdown => [
        {    key => 'ordernumber',
            foreigntable => 'aqorders',
            foreignkey => 'ordernumber',
            onUpdate => 'CASCADE',
            onDelete => 'CASCADE',
        },
        {    key => 'bookfundid',
            foreigntable => 'aqbookfund',
            foreignkey => 'bookfundid',
            onUpdate => 'CASCADE',
            onDelete => 'CASCADE',
        },
    ],
    branchtransfers => [
        {    key => 'frombranch',
            foreigntable => 'branches',
            foreignkey => 'branchcode',
            onUpdate => 'CASCADE',
            onDelete => 'CASCADE',
        },
        {    key => 'tobranch',
            foreigntable => 'branches',
            foreignkey => 'branchcode',
            onUpdate => 'CASCADE',
            onDelete => 'CASCADE',
        },
        {    key => 'itemnumber',
            foreigntable => 'items',
            foreignkey => 'itemnumber',
            onUpdate => 'CASCADE',
            onDelete => 'CASCADE',
        },
    ],
    issuingrules => [
        {    key => 'categorycode',
            foreigntable => 'categories',
            foreignkey => 'categorycode',
            onUpdate => 'CASCADE',
            onDelete => 'CASCADE',
        },
        {    key => 'itemtype',
            foreigntable => 'itemtypes',
            foreignkey => 'itemtype',
            onUpdate => 'CASCADE',
            onDelete => 'CASCADE',
        },
    ],
    issues => [    # constraint is SET NULL : when a borrower or an item is deleted, we keep the issuing record
    # for stat purposes
        {    key => 'borrowernumber',
            foreigntable => 'borrowers',
            foreignkey => 'borrowernumber',
            onUpdate => 'SET NULL',
            onDelete => 'SET NULL',
        },
        {    key => 'itemnumber',
            foreigntable => 'items',
            foreignkey => 'itemnumber',
            onUpdate => 'SET NULL',
            onDelete => 'SET NULL',
        },
    ],
    reserves => [
        {    key => 'borrowernumber',
            foreigntable => 'borrowers',
            foreignkey => 'borrowernumber',
            onUpdate => 'CASCADE',
            onDelete => 'CASCADE',
        },
        {    key => 'biblionumber',
            foreigntable => 'biblio',
            foreignkey => 'biblionumber',
            onUpdate => 'CASCADE',
            onDelete => 'CASCADE',
        },
        {    key => 'itemnumber',
            foreigntable => 'items',
            foreignkey => 'itemnumber',
            onUpdate => 'CASCADE',
            onDelete => 'CASCADE',
        },
        {    key => 'branchcode',
            foreigntable => 'branches',
            foreignkey => 'branchcode',
            onUpdate => 'CASCADE',
            onDelete => 'CASCADE',
        },
    ],
    borrowers => [ # foreign keys are RESTRICT as we don't want to delete borrowers when a branch is deleted
    # but prevent deleting a branch as soon as it has 1 borrower !
        {    key => 'categorycode',
            foreigntable => 'categories',
            foreignkey => 'categorycode',
            onUpdate => 'RESTRICT',
            onDelete => 'RESTRICT',
        },
        {    key => 'branchcode',
            foreigntable => 'branches',
            foreignkey => 'branchcode',
            onUpdate => 'RESTRICT',
            onDelete => 'RESTRICT',
        },
    ],
    deletedborrowers => [ # foreign keys are RESTRICT as we don't want to delete borrowers when a branch is deleted
    # but prevent deleting a branch as soon as it has 1 borrower !
        {    key => 'categorycode',
            foreigntable => 'categories',
            foreignkey => 'categorycode',
            onUpdate => 'RESTRICT',
            onDelete => 'RESTRICT',
        },
        {    key => 'branchcode',
            foreigntable => 'branches',
            foreignkey => 'branchcode',
            onUpdate => 'RESTRICT',
            onDelete => 'RESTRICT',
        },
    ],
    accountlines => [
        {    key => 'borrowernumber',
            foreigntable => 'borrowers',
            foreignkey => 'borrowernumber',
            onUpdate => 'CASCADE',
            onDelete => 'CASCADE',
        },
        {    key => 'itemnumber',
            foreigntable => 'items',
            foreignkey => 'itemnumber',
            onUpdate => 'SET NULL',
            onDelete => 'SET NULL',
        },
    ],
    auth_tag_structure => [
        {    key => 'authtypecode',
            foreigntable => 'auth_types',
            foreignkey => 'authtypecode',
            onUpdate => 'CASCADE',
            onDelete => 'CASCADE',
        },
    ],
    # FIXME : don't constraint auth_*_table and auth_word, as they may be replaced by zebra
);


# column changes
my %column_change = (
    # table
    borrowers => [
                {
                    from => 'emailaddress',
                    to => 'email',
                    after => 'city',
                },
                {
                    from => 'streetaddress',
                    to => 'address',
                    after => 'initials',
                },
                {
                    from => 'faxnumber',
                    to => 'fax',
                    after => 'phone',
                },
                {
                    from => 'textmessaging',
                    to => 'opacnote',
                    after => 'userid',
                },
                {
                    from => 'altnotes',
                    to => 'contactnote',
                    after => 'opacnote',
                },
                {
                    from => 'physstreet',
                    to => 'B_address',
                    after => 'fax',
                },
                {
                    from => 'streetcity',
                    to => 'B_city',
                    after => 'B_address',
                },
                {
                    from => 'phoneday',
                    to => 'mobile',
                    after => 'phone',
                },
                {
                    from => 'zipcode',
                    to => 'zipcode',
                    after => 'city',
                },
                {
                    from => 'homezipcode',
                    to => 'B_zipcode',
                    after => 'B_city',
                },
                {
                    from => 'altphone',
                    to => 'B_phone',
                    after => 'B_zipcode',
                },
                {
                    from => 'expiry',
                    to => 'dateexpiry',
                    after => 'dateenrolled',
                },
                {
                    from => 'guarantor',
                    to => 'guarantorid',
                    after => 'contactname',
                },
                {
                    from => 'altrelationship',
                    to => 'relationship',
                    after => 'borrowernotes',
                },
            ],

    deletedborrowers => [
                {
                    from => 'emailaddress',
                    to => 'email',
                    after => 'city',
                },
                {
                    from => 'streetaddress',
                    to => 'address',
                    after => 'initials',
                },
                {
                    from => 'faxnumber',
                    to => 'fax',
                    after => 'phone',
                },
                {
                    from => 'textmessaging',
                    to => 'opacnote',
                    after => 'userid',
                },
                {
                    from => 'altnotes',
                    to => 'contactnote',
                    after => 'opacnote',
                },
                {
                    from => 'physstreet',
                    to => 'B_address',
                    after => 'fax',
                },
                {
                    from => 'streetcity',
                    to => 'B_city',
                    after => 'B_address',
                },
                {
                    from => 'phoneday',
                    to => 'mobile',
                    after => 'phone',
                },
                {
                    from => 'zipcode',
                    to => 'zipcode',
                    after => 'city',
                },
                {
                    from => 'homezipcode',
                    to => 'B_zipcode',
                    after => 'B_city',
                },
                {
                    from => 'altphone',
                    to => 'B_phone',
                    after => 'B_zipcode',
                },
                {
                    from => 'expiry',
                    to => 'dateexpiry',
                    after => 'dateenrolled',
                },
                {
                    from => 'guarantor',
                    to => 'guarantorid',
                    after => 'contactname',
                },
                {
                    from => 'altrelationship',
                    to => 'relationship',
                    after => 'borrowernotes',
                },
            ],
        );
    

# MOVE all tables TO UTF-8 and innoDB
$sth = $dbh->prepare("show table status");
$sth->execute;
while ( my $table = $sth->fetchrow_hashref ) {
    next if $table->{Name} eq 'marc_word';
    next if $table->{Name} eq 'marc_subfield_table';
    next if $table->{Name} eq 'auth_word';
    next if $table->{Name} eq 'auth_subfield_table';
     if ($table->{Engine} ne 'InnoDB') {
         $dbh->do("ALTER TABLE $table->{Name} TYPE = innodb");
         print "moving $table->{Name} to InnoDB\n";
     }
    unless ($table->{Collation} =~ /^utf8/) {
         print "moving $table->{Name} to utf8\n";
        $dbh->do("ALTER TABLE $table->{Name} CONVERT TO CHARACTER SET utf8");
        $dbh->do("ALTER TABLE $table->{Name} DEFAULT CHARACTER SET utf8 COLLATE utf8_general_ci");
        # FIXME : maybe a ALTER TABLE tbl_name CONVERT TO CHARACTER SET utf8 would be better, def char set seems to work fine. If any problem encountered, let's try with convert !
    } else {
    }
}


foreach my $table (keys %column_change) {
    $sth = $dbh->prepare("show columns from $table");
    $sth->execute();
    undef %types;
    while ( ( $column, $type, $null, $key, $default, $extra ) = $sth->fetchrow )
    {
        $types{$column}->{type} ="$type";
        $types{$column}->{null} = "$null";
        $types{$column}->{key} = "$key";
        $types{$column}->{default} = "$default";
        $types{$column}->{extra} = "$extra";
    }    # while
    my $tablerows = $column_change{$table};
    foreach my $row ( @$tablerows ) {
        if ($types{$row->{from}}->{type}) {
            print "altering $table $row->{from} to $row->{to}\n";
            # ALTER TABLE `borrowers` CHANGE `faxnumber` `fax` TEXT CHARACTER SET utf8 COLLATE utf8_general_ci NULL DEFAULT NULL
#             alter table `borrowers` change `faxnumber` `fax` type text  null after phone
            my $sql =
                "alter table `$table` change `$row->{from}` `$row->{to}` $types{$row->{from}}->{type} ".
                ($types{$row->{from}}->{null} eq 'YES'?" NULL":" NOT NULL").
                ($types{$row->{from}}->{default}?" default ".$types{$row->{from}}->{default}:"").
                "$types{$row->{from}}->{extra} after $row->{after} ";
#             print "$sql";
            $dbh->do($sql);
        }
    }
}

# Enter here the field you want to delete from DB.
# FIXME :: there is a %uselessfield before which seems doing the same things.
my %fieldtodelete = (
    # tablename => [fieldname1,fieldname2,...]

); # %fielddelete

print "removing some unused fields...\n";
foreach my $table ( keys %fieldtodelete ) {
    foreach my $field ( @{$fieldtodelete{$table}} ){
        print "removing ".$field." from ".$table;
        my $sth = $dbh->prepare("ALTER TABLE $table DROP $field");
        $sth->execute;
        if ( $sth->err ) {
            print "Error : $sth->errstr \n";
        }
    }
}

# Enter here the line you want to remove from DB.
my %linetodelete = (
    # table name => where clause.
    userflags => "bit = 8", # delete the 'reserveforself' flags
    
); # %linetodelete

#-------------------
# Initialize

# Start checking

# Get version of MySQL database engine.
my $mysqlversion = `mysqld --version`;
$mysqlversion =~ /Ver (\S*) /;
$mysqlversion = $1;
if ( $mysqlversion ge '3.23' ) {
    print "Could convert to MyISAM database tables...\n" unless $silent;
}

#---------------------------------
# Tables

# Collect all tables into a list
$sth = $dbh->prepare("show tables");
$sth->execute;
while ( my ($table) = $sth->fetchrow ) {
    $existingtables{$table} = 1;
}


# Now add any missing tables
foreach $table ( keys %requiretables ) {
    unless ( $existingtables{$table} ) {
    print "Adding $table table...\n" unless $silent;
        my $sth = $dbh->prepare("create table $table $requiretables{$table}");
        $sth->execute;
        if ( $sth->err ) {
            print "Error : $sth->errstr \n";
            $sth->finish;
        }    # if error
    }    # unless exists
}    # foreach

#---------------------------------
# Columns

foreach $table ( keys %requirefields ) {
    print "Check table $table\n" if $debug and not $silent;
    $sth = $dbh->prepare("show columns from $table");
    $sth->execute();
    undef %types;
    while ( ( $column, $type, $null, $key, $default, $extra ) = $sth->fetchrow )
    {
        $types{$column} = $type;
    }    # while
    foreach $column ( keys %{ $requirefields{$table} } ) {
        print "  Check column $column  [$types{$column}]\n" if $debug and not $silent;
        if ( !$types{$column} ) {

            # column doesn't exist
            print "Adding $column field to $table table...\n" unless $silent;
            $query = "alter table $table
            add column $column " . $requirefields{$table}->{$column};
            print "Execute: $query\n" if $debug;
            my $sti = $dbh->prepare($query);
            $sti->execute;
            if ( $sti->err ) {
                print "**Error : $sti->errstr \n";
                $sti->finish;
            }    # if error
        }    # if column
    }    # foreach column
}    # foreach table

foreach $table ( keys %fielddefinitions ) {
    print "Check table $table\n" if $debug;
    $sth = $dbh->prepare("show columns from $table");
    $sth->execute();
    my $definitions;
    while ( ( $column, $type, $null, $key, $default, $extra ) = $sth->fetchrow )
    {
        $definitions->{$column}->{type}    = $type;
        $definitions->{$column}->{null}    = $null;
        $definitions->{$column}->{null}    = 'NULL' if $null eq 'YES';
        $definitions->{$column}->{key}     = $key;
        $definitions->{$column}->{default} = $default;
        $definitions->{$column}->{extra}   = $extra;
    }    # while
    my $fieldrow = $fielddefinitions{$table};
    foreach my $row (@$fieldrow) {
        my $field   = $row->{field};
        my $type    = $row->{type};
        my $null    = $row->{null};
#         $null    = 'YES' if $row->{null} eq 'NULL';
        my $key     = $row->{key};
        my $default = $row->{default};
#         $default="''" unless $default;
        my $extra   = $row->{extra};
        my $def     = $definitions->{$field};
        my $after    = ($row->{after}?" after ".$row->{after}:"");

        unless ( $type eq $def->{type}
            && $null eq $def->{null}
            && $key eq $def->{key}
            && $extra eq $def->{extra} )
        {
            if ( $null eq '' ) {
                $null = 'NOT NULL';
            }
            if ( $key eq 'PRI' ) {
                $key = 'PRIMARY KEY';
            }
            unless ( $extra eq 'auto_increment' ) {
                $extra = '';
            }
    
            # if it's a new column use "add", if it's an old one, use "change".
            my $action;
            if ($definitions->{$field}->{type}) {
                $action="change $field"
            } else {
                $action="add";
            }
# if it's a primary key, drop the previous pk, before altering the table
            print "  alter or create $field in $table\n" unless $silent;
            my $query;
            if ($key ne 'PRIMARY KEY') {
#                 warn "alter table $table $action $field $type $null $key $extra default $default $after";
                $query = "alter table $table $action $field $type $null $key $extra ".($default?"default ".$dbh->quote($default):"")." $after";
            } else {
#             warn "alter table $table drop primary key, $action $field $type $null $key $extra default $default $after";
                 # something strange : for indexes UNIQUE, they are reported as primary key here.
                 # but if you try to run with drop primary key, it fails.
                 # thus, we run the query twice, one will fail, one will succeed.
                 # strange...
                $query="alter table $table drop primary key, $action $field $type $null $key $extra ".($default?"default ".$dbh->quote($default):"")." $after";
                $query="alter table $table $action $field $type $null $key $extra ".($default?"default ".$dbh->quote($default):"")." $after";
            }
            $dbh->do($query);
        }
    }
}

print "removing some unused data...\n";
foreach my $table ( keys %linetodelete ) {
    foreach my $where ( @{linetodelete{$table}} ){
        print "DELETE FROM ".$table." where ".$where;
        print "\n";
        my $sth = $dbh->prepare("DELETE FROM $table where $where");
        $sth->execute;
        if ( $sth->err ) {
            print "Error : $sth->errstr \n";
        }
    }
}

# Populate tables with required data

# synch table and deletedtable.
foreach my $table (('borrowers','items','biblio','biblioitems')) {
    my %deletedborrowers;
    print "synch'ing $table and deleted$table\n";
    $sth = $dbh->prepare("show columns from deleted$table");
    $sth->execute;
    while ( my ( $column, $type, $null, $key, $default, $extra ) = $sth->fetchrow ) {
        $deletedborrowers{$column}=1;
    }
    $sth = $dbh->prepare("show columns from $table");
    $sth->execute;
    my $previous;
    while ( my ( $column, $type, $null, $key, $default, $extra ) = $sth->fetchrow ) {
        unless ($deletedborrowers{$column}) {
            my $newcol="alter table deleted$table add $column $type";
            if ($null eq 'YES') {
                $newcol .= " NULL ";
            } else {
                $newcol .= " NOT NULL ";
            }
            $newcol .= "default ".$dbh->quote($default) if $default;
            $newcol .= " after $previous" if $previous;
            $previous=$column;
            print "creating column $column\n";
            $dbh->do($newcol);
        }
    }
}
#
# update publisheddate 
#
$sth = $dbh->prepare("select count(*) from serial where publisheddate is NULL");
$sth->execute;
my ($emptypublished) = $sth->fetchrow;
if ($emptypublished) {
    print "Updating publisheddate\n";
    $dbh->do("update serial set publisheddate=planneddate where publisheddate is NULL");
}
foreach my $table ( keys %tabledata ) {
    print "Checking for data required in table $table...\n" unless $silent;
    my $tablerows = $tabledata{$table};
    foreach my $row (@$tablerows) {
        my $uniquefieldrequired = $row->{uniquefieldrequired};
        my $uniquevalue         = $row->{$uniquefieldrequired};
        my $forceupdate         = $row->{forceupdate};
        my $sth                 =
          $dbh->prepare(
"select $uniquefieldrequired from $table where $uniquefieldrequired=?"
        );
        $sth->execute($uniquevalue);
        if ($sth->rows) {
            foreach my $field (keys %$forceupdate) {
                if ($forceupdate->{$field}) {
                    my $sth=$dbh->prepare("update systempreferences set $field=? where $uniquefieldrequired=?");
                    $sth->execute($row->{$field}, $uniquevalue);
                }
            }
        } else {
            print "Adding row to $table: " unless $silent;
            my @values;
            my $fieldlist;
            my $placeholders;
            foreach my $field ( keys %$row ) {
                next if $field eq 'uniquefieldrequired';
                next if $field eq 'forceupdate';
                my $value = $row->{$field};
                push @values, $value;
                print "  $field => $value" unless $silent;
                $fieldlist .= "$field,";
                $placeholders .= "?,";
            }
            print "\n" unless $silent;
            $fieldlist    =~ s/,$//;
            $placeholders =~ s/,$//;
            print "insert into $table ($fieldlist) values ($placeholders)";
            my $sth =
            $dbh->prepare(
                "insert into $table ($fieldlist) values ($placeholders)");
            $sth->execute(@values);
        }
    }
}

#
# check indexes and create them when needed
#
print "Checking for index required...\n" unless $silent;
foreach my $table ( keys %indexes ) {
    #
    # read all indexes from $table
    #
    $sth = $dbh->prepare("show index from $table");
    $sth->execute;
    my %existingindexes;
    while ( my ( $table, $non_unique, $key_name, $Seq_in_index, $Column_name, $Collation, $cardinality, $sub_part, $Packed, $comment ) = $sth->fetchrow ) {
        $existingindexes{$key_name} = 1;
    }
    # read indexes to check
    my $tablerows = $indexes{$table};
    foreach my $row (@$tablerows) {
        my $key_name=$row->{indexname};
        if ($existingindexes{$key_name} eq 1) {
#             print "$key_name existing";
        } else {
            print "\tCreating index $key_name in $table\n";
            my $sql;
            if ($row->{indexname} eq 'PRIMARY') {
                $sql = "alter table $table ADD PRIMARY KEY ($row->{content})";
            } else {
                $sql = "alter table $table ADD INDEX $key_name ($row->{content}) $row->{type}";
            }
             $dbh->do($sql);
            print "Error $sql : $dbh->err \n" if $dbh->err;
        }
    }
}

#
# check foreign keys and create them when needed
#
print "Checking for foreign keys required...\n" unless $silent;
foreach my $table ( keys %foreign_keys ) {
    #
    # read all indexes from $table
    #
    $sth = $dbh->prepare("show table status like '$table'");
    $sth->execute;
    my $stat = $sth->fetchrow_hashref;
    # read indexes to check
    my $tablerows = $foreign_keys{$table};
    foreach my $row (@$tablerows) {
        my $foreign_table=$row->{foreigntable};
        if ($stat->{'Comment'} =~/$foreign_table/) {
#             print "$foreign_table existing\n";
        } else {
            print "\tCreating foreign key $foreign_table in $table\n";
            # first, drop any orphan value in child table
            if ($row->{onDelete} ne "RESTRICT") {
                my $sql = "delete from $table where $row->{key} not in (select $row->{foreignkey} from $row->{foreigntable})";
                $dbh->do($sql);
                print "SQL ERROR: $sql : $dbh->err \n" if $dbh->err;
            }
            my $sql="alter table $table ADD FOREIGN KEY $row->{key} ($row->{key}) REFERENCES $row->{foreigntable} ($row->{foreignkey})";
            $sql .= " on update ".$row->{onUpdate} if $row->{onUpdate};
            $sql .= " on delete ".$row->{onDelete} if $row->{onDelete};
            $dbh->do($sql);
            if ($dbh->err) {
                print "====================
An error occured during :
\t$sql
It probably means there is something wrong in your DB : a row ($table.$row->{key}) refers to a value in $row->{foreigntable}.$row->{foreignkey} that does not exist. solve the problem and run updater again (or just the previous SQL statement).
You can find those values with select
\t$table.* from $table where $row->{key} not in (select $row->{foreignkey} from $row->{foreigntable})
====================\n
";
            }
        }
    }
}
# now drop useless tables
foreach $table ( @TableToDelete ) {
    if ( $existingtables{$table} ) {
        print "Dropping unused table $table\n" if $debug and not $silent;
        $dbh->do("drop table $table");
        if ( $dbh->err ) {
            print "Error : $dbh->errstr \n";
        }
    }
}

#
# SPECIFIC STUFF
#
#
# create frameworkcode row in biblio table & fill it with marc_biblio.frameworkcode.
#

# 1st, get how many biblio we will have to do...
$sth = $dbh->prepare('select count(*) from marc_biblio');
$sth->execute;
my ($totaltodo) = $sth->fetchrow;

$sth = $dbh->prepare("show columns from biblio");
$sth->execute();
my $definitions;
my $bibliofwexist=0;
while ( ( $column, $type, $null, $key, $default, $extra ) = $sth->fetchrow ){
    $bibliofwexist=1 if $column eq 'frameworkcode';
}
unless ($bibliofwexist) {
    print "moving biblioframework to biblio table\n";
    $dbh->do('ALTER TABLE `biblio` ADD `frameworkcode` VARCHAR( 4 ) NOT NULL AFTER `biblionumber`');
    $sth = $dbh->prepare('select biblionumber,frameworkcode from marc_biblio');
    $sth->execute;
    my $sth_update = $dbh->prepare('update biblio set frameworkcode=? where biblionumber=?');
    my $totaldone=0;
    while (my ($biblionumber,$frameworkcode) = $sth->fetchrow) {
        $sth_update->execute($frameworkcode,$biblionumber);
        $totaldone++;
        print "\r$totaldone / $totaltodo" unless ($totaldone % 100);
    }
    print "\rdone\n";
}

# at last, remove useless fields
foreach $table ( keys %uselessfields ) {
    my @fields = split /,/,$uselessfields{$table};
    my $fields;
    my $exists;
    foreach my $fieldtodrop (@fields) {
        $fieldtodrop =~ s/\t//g;
        $fieldtodrop =~ s/\n//g;
        $exists =0;
        $sth = $dbh->prepare("show columns from $table");
        $sth->execute;
        while ( my ( $column, $type, $null, $key, $default, $extra ) = $sth->fetchrow )
        {
            $exists =1 if ($column eq $fieldtodrop);
        }
        if ($exists) {
            print "deleting $fieldtodrop field in $table...\n" unless $silent;
            my $sth = $dbh->prepare("alter table $table drop $fieldtodrop");
            $sth->execute;
        }
    }
}    # foreach

#
# Changing aqbookfund's primary key 
#
$sth=$dbh->prepare("ALTER TABLE `aqbookfund` DROP PRIMARY KEY , ADD PRIMARY KEY ( `bookfundid` , `branchcode` ) ;");
$sth->execute;

$sth->finish;

exit;

# $Log$
# Revision 1.170  2007/06/26 13:25:37  tipaul
# removing some useless tables from updatedatabase
#
# Revision 1.169  2007/06/26 09:23:26  tipaul
# improving OpacBrowser systempref explanation
#
# Revision 1.168  2007/06/25 15:02:31  tipaul
# missing field declaration
#
# Revision 1.167  2007/06/15 13:09:08  toins
# bugfix : bibliotitems.dewey & deletedbiblioitems.dewey mustn't be double(8,6).
#
# Revision 1.166  2007/06/08 09:40:12  toins
# bug fix : items.homebranch must be VARCHAR(10)
#
# Revision 1.165  2007/05/23 16:33:10  tipaul
# skip move to innoDB for the 4 22 tables, that are used to store MARC records, are useless in Koha 3.0 The process is very very long, so the updatedatabase should speed up a lot (by long I mean 1 hour on my Dual core with SCSI disk, for a 50 000 biblios long table
#
# Revision 1.164  2007/05/04 16:24:09  tipaul
# various bugfixes on parameters modules + adding default NoZebraIndexes systempreference if it's empty
#
# Revision 1.163  2007/05/02 16:44:31  tipaul
# NoZebra SQL index management :
# * adding 3 subs in Biblio.pm
# - GetNoZebraIndexes, that get the index structure in a new systempreference (added with this commit)
# - _DelBiblioNoZebra, that retrieve all index entries for a biblio and remove in a variable the biblio reference
# - _AddBiblioNoZebra, that add index entries for a biblio.
# Note that the 2 _Add and _Del subs work only in a hash variable, to speed up things in case of a modif (ie : delete+add). The effective SQL update is done in the ModZebra sub (that existed before, and dealed with zebra index).
# I think the code has to be more deeply tested, but it works at least partially.
#
# Revision 1.162  2007/04/30 16:16:50  tipaul
# bugfix for updatedatabase : when there is no default value (NULL fields) + removing bibliothesaurus table+adding NoZebra systempref (False by default)
#
# Revision 1.161  2007/04/13 16:27:55  hdl
# Adding Version variable to systempreferences.
#
# Revision 1.160  2007/03/19 18:35:13  toins
#  - adding default value in marc_subfield_structure.
#  - now marc_subfields_structure displays subfields in tab view.
#
# Revision 1.159  2007/03/16 01:25:09  kados
# Using my precrash CVS copy I did the following:
#
# cvs -z3 -d:ext:kados@cvs.savannah.nongnu.org:/sources/koha co -P koha
# find koha.precrash -type d -name "CVS" -exec rm -v {} \;
# cp -r koha.precrash/* koha/
# cd koha/
# cvs commit
#
# This should in theory put us right back where we were before the crash
#
# Revision 1.159  2007/03/12 17:52:30  rych
# add pri key to userflags
#
# Revision 1.158  2007/03/09 15:14:57  tipaul
# rel_3_0 moved to HEAD
#
# Revision 1.157.2.56  2007/01/31 16:22:54  btoumi
# -add possibility to use isbn with length of 13 characters
# for  Import datas in the reservoir.
# -modify isbn field in marc_breeding table (varchar 13)
# -add isbn filter (no - )when u read a notice from reservoir
# -add filter to have right field 100
#
# Revision 1.157.2.55  2007/01/30 10:50:19  tipaul
# adding 2 usefull indexes to biblioitems table
#
# Revision 1.157.2.54  2007/01/29 16:45:52  toins
# * adding a new default authorised value : SUGGEST.
# SUGGEST give some reasons to accept or reject a suggestion.
#
# * default value for borrowersMandatoryfield syspref is now "cardnumber|surname|adress"
#
# Revision 1.157.2.53  2007/01/26 20:48:37  hdl
# Serials management : Bugfixes + improvements.
# - Partial dates are now managed
# - next Date Calculation with irregularity tested for 1 week and 1 month.
# - manage if subscription is abouttoexpire or expired.
# - Adding some information on serials pages about subscription.
# - Managing irregularity with numbers.
# - Adding Internal Notes in subscription management.
# - Repeating Button above pages.
#
# Please run Updatedatabase to change irregularity and add internalnotes field  to subscription
#
# Revision 1.157.2.52  2007/01/24 13:57:26  tipaul
# - setting supplierid to auto_increment (HDL : could you check that is works, i'm not 100% sure)
# - removing 22 -> 30 marc_subfield_table -> marcxml stuff, it's now in misc/migration_tools/22_to_30/
#
# Revision 1.157.2.51  2007/01/18 09:58:45  tipaul
# defaulting NOT NULL fields (to '')
#
# Revision 1.157.2.50  2007/01/18 09:39:21  tipaul
# issuedate must be defaulted with ' '
#
# Revision 1.157.2.49  2007/01/18 09:37:30  tipaul
# removing 2 field definitions that were here twice
#
# Revision 1.157.2.48  2007/01/15 09:55:40  toins
# adding a new logging systempref : FinesLog.
#
# Revision 1.157.2.47  2007/01/12 18:09:49  toins
# LetterLog added
#
# Revision 1.157.2.46  2007/01/11 14:35:39  tipaul
# adding Opac Browser feature : the build_browser_and_cloud.pl script will :
# - fill the browser table, that enable browsing, digit by digit of a given category, the catalogue. A complete dewey classification is provided in the script, active only for french libraries, of course (although, for instance, the script check that the catalogue is in english for developping convenience)
# - fill the tags table, that contains the subject cloud.
#
# The cloud part is a copy of the previous build_tags.pl script that can be deleted : those 2 scripts require to parse all the catalogue to extract interesting data, so they are long. It's useless to parse the catalogue twice !
#
# The commit also add the systempreference to hide/show the OpacBrowse in database & in systempref management script.
#
# IMPROVEMENTS to do :
# - the script that builds the tables can be improved to update only last week biblios (at the price of a small error in value links, but it's not a problem).
# - add, in parameters section, a place to edit browser descriptions. The build script has to be updated to to avoid deleting existing browser descriptions.
#
# Revision 1.157.2.45  2007/01/10 16:52:52  toins
# Value for Log Features syspref are set to 0 by default.
#
# Revision 1.157.2.44  2007/01/10 16:31:15  toins
# new systems preferences :
#  - CataloguingLog (log the update/creation/deletion of a notice if set to 1)
#  - BorrowersLog ( idem for borrowers )
#  - IssueLog (log all issue if set to 1)
#  - ReturnLog (log all return if set to 1)
#  - SusbcriptionLog (log all creation/deletion/update of a subcription)
#
# All of theses are in a new tab called 'LOGFeatures' in systempreferences.pl
#
# Revision 1.157.2.43  2007/01/10 14:13:17  toins
# opac_news.displayed is replaced by opac_news.number.
# This field say how are ordered the news on the template.
#
# Revision 1.157.2.42  2007/01/09 14:09:01  toins
# 2 field added to opac_news.('expirationdate' and 'displayed').