#!/usr/bin/perl

#A script that lets the user populate a basket from an iso2709 file
#the script first displays a list of import batches, then when a batch is selected displays all the biblios in it.
#The user can then pick which biblios he wants to order

# Copyright 2008 - 2011 BibLibre SARL
#
# This file is part of Koha.
#
# Koha is free software; you can redistribute it and/or modify it under the
# terms of the GNU General Public License as published by the Free Software
# Foundation; either version 2 of the License, or (at your option) any later
# version.
#
# Koha is distributed in the hope that it will be useful, but WITHOUT ANY
# WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
# A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License along
# with Koha; if not, write to the Free Software Foundation, Inc.,
# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.

use strict;
use warnings;
use CGI;
use Carp;
use Number::Format qw(:all);

use C4::Context;
use C4::Auth;
use C4::Input;
use C4::Output;
use C4::ImportBatch;
use C4::Matcher;
use C4::Search qw/FindDuplicate/;
use C4::Acquisition;
use C4::Biblio;
use C4::Items;
use C4::Koha;
use C4::Budgets;
use C4::Acquisition;
use C4::Bookseller qw/GetBookSellerFromId/;
use C4::Suggestions;    # GetSuggestion
use C4::Branch;         # GetBranches
use C4::Members;

my $input = new CGI;
my ($template, $loggedinuser, $cookie, $userflags) = get_template_and_user({
    template_name => "acqui/addorderiso2709.tmpl",
    query => $input,
    type => "intranet",
    authnotrequired => 0,
    flagsrequired   => { acquisition => 'order_manage' },
    debug => 1,
});

my $cgiparams = $input->Vars;
my $op = $cgiparams->{'op'};
my $booksellerid  = $input->param('booksellerid');
my $bookseller = GetBookSellerFromId($booksellerid);
my $data;

$template->param(scriptname => "/cgi-bin/koha/acqui/addorderiso2709.pl",
                booksellerid => $booksellerid,
                booksellername => $bookseller->{name},
                );
my $ordernumber;

if ($cgiparams->{'import_batch_id'} && $op eq ""){
    $op = "batch_details";
}

#Needed parameters:
if (! $cgiparams->{'basketno'}){
    die "Basketnumber required to order from iso2709 file import";
}

#
# 1st step = choose the file to import into acquisition
#
if ($op eq ""){
    $template->param("basketno" => $cgiparams->{'basketno'});
#display batches
    import_batches_list($template);
#
# 2nd step = display the content of the choosen file
#
} elsif ($op eq "batch_details"){
#display lines inside the selected batch
    # get currencies (for change rates calcs if needed)
    my $active_currency = GetCurrency();
    my $default_currency;
    if (! $data->{currency} ) { # New order no currency set
        if ( $bookseller->{listprice} ) {
            $default_currency = $bookseller->{listprice};
        }
        else {
            $default_currency = $active_currency->{currency};
        }
    }
    my @rates = GetCurrencies();

    # ## @rates

    my @loop_currency = ();
    for my $curr ( @rates ) {
        my $selected;
        if ($data->{currency} ) {
            $selected = $curr->{currency} eq $data->{currency};
        }
        else {
            $selected = $curr->{currency} eq $default_currency;
        }
        push @loop_currency, {
            currcode => $curr->{currency},
            rate     => $curr->{rate},
            selected => $selected,
        }
    }

    $template->param("batch_details" => 1,
                     "basketno"      => $cgiparams->{'basketno'},
                     loop_currencies  => \@loop_currency,
                     );
    import_biblios_list($template, $cgiparams->{'import_batch_id'});
    if ( C4::Context->preference('AcqCreateItem') eq 'ordering' && !$ordernumber ) {
        # prepare empty item form
        my $cell = PrepareItemrecordDisplay( '', '', '', 'ACQ' );

        #     warn "==> ".Data::Dumper::Dumper($cell);
        unless ($cell) {
            $cell = PrepareItemrecordDisplay( '', '', '', '' );
            $template->param( 'NoACQframework' => 1 );
        }
        my @itemloop;
        push @itemloop, $cell;

        $template->param( items => \@itemloop );
    }
#
# 3rd step = import the records
#
} elsif ( $op eq 'import_records' ) {
    my $num=FormatNumber();
#import selected lines
    $template->param('basketno' => $cgiparams->{'basketno'});
# Budget_id is mandatory for adding an order, we just add a default, the user needs to modify this aftewards
    my $budgets = GetBudgets();
    if (scalar @$budgets == 0){
        die "No budgets defined, can't continue";
    }
    my $budget_id = @$budgets[0]->{'budget_id'};
#get all records from a batch, and check their import status to see if they are checked.
#(default values: quantity 1, uncertainprice yes, first budget)

    # retrieve the file you want to import
    my $import_batch_id = $cgiparams->{'import_batch_id'};
    my $biblios = GetImportBibliosRange($import_batch_id);
    for my $biblio (@$biblios){
        # 1st insert the biblio, or find it through matcher
        my ( $marcblob, $encoding ) = GetImportRecordMarc( $biblio->{'import_record_id'} );
        my $marcrecord = MARC::Record->new_from_usmarc($marcblob) || die "couldn't translate marc information";
        my $match = GetImportRecordMatches( $biblio->{'import_record_id'}, 1 );
        my $biblionumber=$#$match > -1?$match->[0]->{'biblionumber'}:0;

        unless ( $biblionumber ) {
            # add the biblio
            my $bibitemnum;

            # remove ISBN -
            my ( $isbnfield, $isbnsubfield ) = GetMarcFromKohaField( 'biblioitems.isbn', '' );                
            if ( $marcrecord->field($isbnfield) ) {
                foreach my $field ( $marcrecord->field($isbnfield) ) {
                    foreach my $subfield ( $field->subfield($isbnsubfield) ) {
                        my $newisbn = $field->subfield($isbnsubfield);
                        $newisbn =~ s/-//g;
                        $field->update( $isbnsubfield => $newisbn );
                    }
                }
            }
            ( $biblionumber, $bibitemnum ) = AddBiblio( $marcrecord, $cgiparams->{'frameworkcode'} || '' );
            SetImportRecordStatus( $biblio->{'import_record_id'}, 'imported' );
            # 2nd add authorities if applicable
            if (C4::Context->preference("BiblioAddsAuthorities")){
                my $headings_linked =BiblioAutoLink($marcrecord, $cgiparams->{'frameworkcode'});
            }
        } else {
            SetImportRecordStatus( $biblio->{'import_record_id'}, 'imported' );
        }
        # 3rd add order
        my $patron = C4::Members->GetMember( borrowernumber => $loggedinuser );
        my $branch = C4::Branch->GetBranchDetail( $patron->{branchcode} );
        my ($invoice);
        # get quantity in the MARC record (1 if none)
        my $quantity = GetMarcQuantity($marcrecord, C4::Context->preference('marcflavour')) || 1;
        my %orderinfo = (
            "biblionumber", $biblionumber, "basketno", $cgiparams->{'basketno'},
            "quantity", $quantity, "branchcode", $branch, 
            "booksellerinvoicenumber", $invoice, 
            "budget_id", $budget_id, "uncertainprice", 1,
            "sort1", $cgiparams->{'sort1'},"sort2", $cgiparams->{'sort2'},
            "notes", $cgiparams->{'notes'}, "budget_id", $cgiparams->{'budget_id'},
            "currency",$cgiparams->{'currency'},
        );

        my $price = GetMarcPrice($marcrecord, C4::Context->preference('marcflavour'));

        if ($price){
            $orderinfo{'listprice'} = $price;
            eval {
		require C4::Acquisition;
		import C4::Acquisition qw/GetBasket/;
	    };
	    if ($@){
		croak $@;
	    }
            eval {
		require C4::Bookseller;
	        import C4::Bookseller qw/GetBookSellerFromId/;
	    };
	    if ($@){
		croak $@;
	    }
            my $basket     = GetBasket( $orderinfo{basketno} );
            my $bookseller = GetBookSellerFromId( $basket->{booksellerid} );
            my $gst        = $bookseller->{gstrate} || C4::Context->preference("gist") || 0;
            $orderinfo{'unitprice'} = $orderinfo{listprice} - ( $orderinfo{listprice} * ( $bookseller->{discount} / 100 ) );
            $orderinfo{'ecost'} = $orderinfo{unitprice};
        } else {
            $orderinfo{'listprice'} = 0;
        }
        $orderinfo{'rrp'} = $orderinfo{'listprice'};

        # remove uncertainprice flag if we have found a price in the MARC record
        $orderinfo{uncertainprice} = 0 if $orderinfo{listprice};
        my $basketno;
        ( $basketno, $ordernumber ) = NewOrder( \%orderinfo );

        # 4th, add items if applicable
        # parse the item sent by the form, and create an item just for the import_record_id we are dealing with
        # this is not optimised, but it's working !
        if ( C4::Context->preference('AcqCreateItem') eq 'ordering' ) {
            my @tags         = $input->param('tag');
            my @subfields    = $input->param('subfield');
            my @field_values = $input->param('field_value');
            my @serials      = $input->param('serial');
            my @ind_tag   = $input->param('ind_tag');
            my @indicator = $input->param('indicator');
            my $item;
            push @{ $item->{tags} },         $tags[0];
            push @{ $item->{subfields} },    $subfields[0];
            push @{ $item->{field_values} }, $field_values[0];
            push @{ $item->{ind_tag} },      $ind_tag[0];
            push @{ $item->{indicator} },    $indicator[0];
            my $xml = TransformHtmlToXml( \@tags, \@subfields, \@field_values, \@ind_tag, \@indicator );
            my $record = MARC::Record::new_from_xml( $xml, 'UTF-8' );
            for (my $qtyloop=1;$qtyloop <=$quantity;$qtyloop++) {
                my ( $biblionumber, $bibitemnum, $itemnumber ) = AddItemFromMarc( $record, $biblionumber );
                NewOrderItem( $itemnumber, $ordernumber );
            }
        } else {
            SetImportRecordStatus( $biblio->{'import_record_id'}, 'imported' );
        }
    }
    # go to basket page
    print $input->redirect("/cgi-bin/koha/acqui/basket.pl?basketno=".$cgiparams->{'basketno'});
    exit;
}

my $budgets = GetBudgets();
my $budget_id = @$budgets[0]->{'budget_id'};
# build bookfund list
my $borrower = GetMember( 'borrowernumber' => $loggedinuser );
my ( $flags, $homebranch ) = ( $borrower->{'flags'}, $borrower->{'branchcode'} );
my $budget = GetBudget($budget_id);

# build budget list
my $budget_loop = [];
$budgets = GetBudgetHierarchy;
foreach my $r ( @{$budgets} ) {
    next unless (CanUserUseBudget($borrower, $r, $userflags));
    if ( !defined $r->{budget_amount} || $r->{budget_amount} == 0 ) {
        next;
    }
    push @{$budget_loop},
      { b_id  => $r->{budget_id},
        b_txt => $r->{budget_name},
        b_sel => ( $r->{budget_id} == $budget_id ) ? 1 : 0,
      };
}
$template->param( budget_loop    => $budget_loop,);

my $CGIsort1;
if ($budget) {    # its a mod ..
    if ( defined $budget->{'sort1_authcat'} ) {    # with custom  Asort* planning values
        $CGIsort1 = GetAuthvalueDropbox(  $budget->{'sort1_authcat'}, $data->{'sort1'} );
    }
} elsif ( scalar(@$budgets) ) {
    $CGIsort1 = GetAuthvalueDropbox(  @$budgets[0]->{'sort1_authcat'}, '' );
} else {
    $CGIsort1 = GetAuthvalueDropbox(  '', '' );
}

# if CGIsort is successfully fetched, the use it
# else - failback to plain input-field
if ($CGIsort1) {
    $template->param( CGIsort1 => $CGIsort1 );
} else {
    $template->param( sort1 => $data->{'sort1'} );
}

my $CGIsort2;
if ($budget) {
    if ( defined $budget->{'sort2_authcat'} ) {
        $CGIsort2 = GetAuthvalueDropbox(  $budget->{'sort2_authcat'}, $data->{'sort2'} );
    }
} elsif ( scalar(@$budgets) ) {
    $CGIsort2 = GetAuthvalueDropbox(  @$budgets[0]->{sort2_authcat}, '' );
} else {
    $CGIsort2 = GetAuthvalueDropbox( '', '' );
}

if ($CGIsort2) {
    $template->param( CGIsort2 => $CGIsort2 );
} else {
    $template->param( sort2 => $data->{'sort2'} );
}

output_html_with_http_headers $input, $cookie, $template->output;


sub import_batches_list {
    my ($template) = @_;
    my $batches = GetImportBatchRangeDesc();

    my @list = ();
    foreach my $batch (@$batches) {
        if ($batch->{'import_status'} eq "staged") {
            # check if there is at least 1 line still staged
            my $stagedList=GetImportBibliosRange($batch->{'import_batch_id'}, undef, undef, 'staged');
            if (scalar @$stagedList) {
                my ($staged_date, $staged_hour) = split (/ /, $batch->{'upload_timestamp'});
                push @list, {
                        import_batch_id => $batch->{'import_batch_id'},
                        num_biblios => $batch->{'num_biblios'},
                        num_items => $batch->{'num_items'},
                        staged_date => $staged_date,
                        staged_hour => $staged_hour,
                        import_status => $batch->{'import_status'},
                        file_name => $batch->{'file_name'},
                        comments => $batch->{'comments'},
                };
            } else {
                # if there are no more line to includes, set the status to imported
                SetImportBatchStatus( $batch->{'import_batch_id'}, 'imported' );
            }
        }
    }
    $template->param(batch_list => \@list); 
    my $num_batches = GetNumberOfNonZ3950ImportBatches();
    $template->param(num_results => $num_batches);
}

sub import_biblios_list {
    my ($template, $import_batch_id) = @_;
    my $batch = GetImportBatch($import_batch_id,'staged');
    my $biblios = GetImportBibliosRange($import_batch_id,'','','staged');
    my @list = ();

    foreach my $biblio (@$biblios) {
        my $citation = $biblio->{'title'};
        $citation .= " $biblio->{'author'}" if $biblio->{'author'};
        $citation .= " (" if $biblio->{'issn'} or $biblio->{'isbn'};
        $citation .= $biblio->{'isbn'} if $biblio->{'isbn'};
        $citation .= ", " if $biblio->{'issn'} and $biblio->{'isbn'};
        $citation .= $biblio->{'issn'} if $biblio->{'issn'};
        $citation .= ")" if $biblio->{'issn'} or $biblio->{'isbn'};
        my $match = GetImportRecordMatches($biblio->{'import_record_id'}, 1);
        my %cellrecord = (
            import_record_id => $biblio->{'import_record_id'},
            citation => $citation,
            import  => 1,
            status => $biblio->{'status'},
            record_sequence => $biblio->{'record_sequence'},
            overlay_status => $biblio->{'overlay_status'},
            match_biblionumber => $#$match > -1 ? $match->[0]->{'biblionumber'} : 0,
            match_citation => $#$match > -1 ? $match->[0]->{'title'} . ' ' . $match->[0]->{'author'} : '',
            match_score => $#$match > -1 ? $match->[0]->{'score'} : 0,
        );
        push @list, \%cellrecord;
    }
    my $num_biblios = $batch->{'num_biblios'};
    my $overlay_action = GetImportBatchOverlayAction($import_batch_id);
    my $nomatch_action = GetImportBatchNoMatchAction($import_batch_id);
    my $item_action = GetImportBatchItemAction($import_batch_id);
    $template->param(biblio_list => \@list,
                        num_results => $num_biblios,
                        import_batch_id => $import_batch_id,
                        "overlay_action_${overlay_action}" => 1,
                        overlay_action => $overlay_action,
                        "nomatch_action_${nomatch_action}" => 1,
                        nomatch_action => $nomatch_action,
                        "item_action_${item_action}" => 1,
                        item_action => $item_action
                    );
    batch_info($template, $batch);
}

sub batch_info {
    my ($template, $batch) = @_;
    $template->param(batch_info => 1,
                                      file_name => $batch->{'file_name'},
                                          comments => $batch->{'comments'},
                                          import_status => $batch->{'import_status'},
                                          upload_timestamp => $batch->{'upload_timestamp'},
                                          num_biblios => $batch->{'num_biblios'},
                                          num_items => $batch->{'num_biblios'});
    if ($batch->{'num_biblios'} > 0) {
        if ($batch->{'import_status'} eq 'staged' or $batch->{'import_status'} eq 'reverted') {
            $template->param(can_commit => 1);
        }
        if ($batch->{'import_status'} eq 'imported') {
            $template->param(can_revert => 1);
        }
    }
    if (defined $batch->{'matcher_id'}) {
        my $matcher = C4::Matcher->fetch($batch->{'matcher_id'});
        if (defined $matcher) {
            $template->param('current_matcher_id' => $batch->{'matcher_id'},
                                              'current_matcher_code' => $matcher->code(),
                                              'current_matcher_description' => $matcher->description());
        }
    }
    add_matcher_list($batch->{'matcher_id'});
}

sub add_matcher_list {
    my $current_matcher_id = shift;
    my @matchers = C4::Matcher::GetMatcherList();
    if (defined $current_matcher_id) {
        for (my $i = 0; $i <= $#matchers; $i++) {
            if ($matchers[$i]->{'matcher_id'} == $current_matcher_id) {
                $matchers[$i]->{'selected'} = 1;
            }
        }
    }
    $template->param(available_matchers => \@matchers);
}