#!/usr/bin/perl

# Copyright 2007 Liblime ltd
#
# 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 3 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, see <http://www.gnu.org/licenses>.

use Modern::Perl;
use CGI qw/-utf8/;
use Text::CSV::Encoded;
use Encode qw( decode );
use URI::Escape;
use File::Temp;
use C4::Reports::Guided qw( delete_report get_report_areas convert_sql update_sql get_saved_reports get_results ValidateSQLParameters format_results get_report_types get_columns get_from_dictionary get_criteria build_query save_report execute_query nb_rows get_report_groups );
use Koha::Reports;
use C4::Auth qw( get_template_and_user get_session );
use C4::Output qw( pagination_bar output_html_with_http_headers );
use C4::Context;
use Koha::Caches;
use C4::Log qw( logaction );
use Koha::AuthorisedValue;
use Koha::AuthorisedValues;
use Koha::BiblioFrameworks;
use Koha::Libraries;
use Koha::Patron::Categories;
use Koha::SharedContent;
use Koha::Util::OpenDocument qw( generate_ods );
use Koha::Notice::Templates;
use Koha::TemplateUtils qw( process_tt );
use C4::ClassSource qw( GetClassSources );
use C4::Scrubber;

=head1 NAME

guided_reports.pl

=head1 DESCRIPTION

Script to control the guided report creation

=cut

my $input = CGI->new;
my $usecache = Koha::Caches->get_instance->memcached_cache;

my $op = $input->param('op') // '';
my $flagsrequired;
if ( ( $op eq 'add_form' ) || ( $op eq 'add_form_sql' ) || ( $op eq 'edit_form' )
   || ( $op eq 'duplicate' ) ) {
    $flagsrequired = 'create_reports';
}
elsif ( $op eq 'list' ) {
    $flagsrequired = 'execute_reports';
}
elsif ( $op eq 'delete' ) {
    $flagsrequired = 'delete_reports';
}
else {
    $flagsrequired = '*';
}

my ( $template, $borrowernumber, $cookie ) = get_template_and_user(
    {
        template_name   => "reports/guided_reports_start.tt",
        query           => $input,
        type            => "intranet",
        flagsrequired   => { reports => $flagsrequired },
    }
);
my $session_id = $input->cookie('CGISESSID');
my $session = $session_id ? get_session($session_id) : undef;

$template->param( templates => Koha::Notice::Templates->search( { module => 'report' } ) );

my $filter;
if ( $input->param("filter_set") or $input->param('clear_filters') ) {
    $filter = {};
    $filter->{$_} = $input->param("filter_$_") foreach qw/date author keyword group subgroup/;
    $session->param('report_filter', $filter) if $session;
    $template->param( 'filter_set' => 1 );
}
elsif ($session and not $input->param('clear_filters')) {
    $filter = $session->param('report_filter');
}

my @errors = ();
if ( !$op ) {
    $template->param( 'start' => 1 );
    # show welcome page
}
elsif ( $op eq 'add_form' ) {
    # build a new report
    $template->param( 'build1' => 1 );
    $template->param(
        'areas'        => get_report_areas(),
        'usecache'     => $usecache,
        'cache_expiry' => 300,
        'public'       => '0',
    );
}
elsif ( $op eq 'cud-delete') {
    my @ids = $input->multi_param('id');
    delete_report( @ids );
    $op = 'list';
}

elsif ( $op eq 'show'){

    my $id = $input->param('id');
    my $report = Koha::Reports->find($id);
    $template->param(
        'id'      => $id,
        'reportname' => $report->report_name,
        'notes'      => $report->notes,
        'sql'     => $report->savedsql,
        'showsql' => 1,
        'mana_success' => scalar $input->param('mana_success'),
        'mana_id' => $report->{mana_id},
        'mana_comments' => $report->{comments}
    );
}

elsif ( $op eq 'edit_form'){
    my $id = $input->param('id');
    my $report = Koha::Reports->find($id);
    my $group = $report->report_group;
    my $subgroup  = $report->report_subgroup;
    my $tables = get_tables();
    $template->param(
        'sql'        => $report->savedsql,
        'reportname' => $report->report_name,
        'groups_with_subgroups' => groups_with_subgroups($group, $subgroup),
        'notes'      => $report->notes,
        'id'         => $id,
        'cache_expiry' => $report->cache_expiry,
        'public' => $report->public,
        'usecache' => $usecache,
        'editsql'    => 1,
        'mana_id' => $report->{mana_id},
        'mana_comments' => $report->{comments},
        'tables' => $tables
    );
}

elsif ( $op eq 'cud-update_sql' || $op eq 'cud-update_and_run_sql' ){
    my $id         = $input->param('id');
    my $sql        = $input->param('sql');
    my $reportname = $input->param('reportname');
    my $group      = $input->param('group');
    my $subgroup   = $input->param('subgroup');
    my $notes      = $input->param('notes');
    my $cache_expiry = $input->param('cache_expiry');
    my $cache_expiry_units = $input->param('cache_expiry_units');
    my $public = $input->param('public');
    my $save_anyway = $input->param('save_anyway');
    my @errors;
    my $tables = get_tables();

    # if we have the units, then we came from creating a report from SQL and thus need to handle converting units
    if( $cache_expiry_units ){
      if( $cache_expiry_units eq "minutes" ){
        $cache_expiry *= 60;
      } elsif( $cache_expiry_units eq "hours" ){
        $cache_expiry *= 3600; # 60 * 60
      } elsif( $cache_expiry_units eq "days" ){
        $cache_expiry *= 86400; # 60 * 60 * 24
      }
    }
    # check $cache_expiry isn't too large, Memcached::set requires it to be less than 30 days or it will be treated as if it were an absolute time stamp
    if( $cache_expiry >= 2592000 ){
      push @errors, {cache_expiry => $cache_expiry};
    }

    create_non_existing_group_and_subgroup($input, $group, $subgroup);

    my ( $is_sql_valid, $validation_errors ) = Koha::Report->new({ savedsql => $sql })->is_sql_valid;
    push(@errors, @$validation_errors) unless $is_sql_valid;

    if (@errors) {
        $template->param(
            'errors'    => \@errors,
            'sql'       => $sql,
        );
    } else {

        # Check defined SQL parameters for authorised value validity
        my $problematic_authvals = ValidateSQLParameters($sql);

        if ( scalar @$problematic_authvals > 0 && not $save_anyway ) {
            # There's at least one problematic parameter, report to the
            # GUI and provide all user input for further actions
            $template->param(
                'id' => $id,
                'sql' => $sql,
                'reportname' => $reportname,
                'group' => $group,
                'subgroup' => $subgroup,
                'notes' => $notes,
                'public' => $public,
                'problematic_authvals' => $problematic_authvals,
                'warn_authval_problem' => 1,
                'phase_update' => 1,
            );

        } else {
            # No params problem found or asked to save anyway
            update_sql( $id, {
                    sql => $sql,
                    name => $reportname,
                    group => $group,
                    subgroup => $subgroup,
                    notes => $notes,
                    public => $public,
                    cache_expiry => $cache_expiry,
                } );
            $template->param(
                'save_successful'       => 1,
                'reportname'            => $reportname,
                'id'                    => $id,
                'editsql'               => 1,
                'sql'                   => $sql,
                'groups_with_subgroups' => groups_with_subgroups($group, $subgroup),
                'notes'                 => $notes,
                'cache_expiry'          => $cache_expiry,
                'public'                => $public,
                'usecache'              => $usecache,
                'tables'                => $tables
            );
            logaction( "REPORTS", "MODIFY", $id, "$reportname | $sql" ) if C4::Context->preference("ReportsLog");
        }
        if ( $usecache ) {
            $template->param(
                cache_expiry => $cache_expiry,
                cache_expiry_units => $cache_expiry_units,
            );
        }
        if ( $op eq 'cud-update_and_run_sql' ) {
            $op = 'run';
        }
    }
}

elsif ($op eq 'retrieve_results') {
    my $id = $input->param('id');
    my $result = format_results( $id );
    $template->param(
        report_name   => $result->{report_name},
        notes         => $result->{notes},
        saved_results => $result->{results},
        date_run      => $result->{date_run},
    );
}

elsif ( $op eq 'cud-report' ) {
    my $cache_expiry_units = $input->param('cache_expiry_units'),
    my $cache_expiry = $input->param('cache_expiry');

    # we need to handle converting units
    if( $cache_expiry_units eq "minutes" ){
      $cache_expiry *= 60;
    } elsif( $cache_expiry_units eq "hours" ){
      $cache_expiry *= 3600; # 60 * 60
    } elsif( $cache_expiry_units eq "days" ){
      $cache_expiry *= 86400; # 60 * 60 * 24
    }
    # check $cache_expiry isn't too large, Memcached::set requires it to be less than 30 days or it will be treated as if it were an absolute time stamp
    if( $cache_expiry >= 2592000 ){ # oops, over the limit of 30 days
      # report error to user
      $template->param(
        'cache_error' => 1,
        'build1' => 1,
        'areas'   => get_report_areas(),
        'cache_expiry' => $cache_expiry,
        'usecache' => $usecache,
        'public' => scalar $input->param('public'),
      );
    } else {
      # they have chosen a new report and the area to report on
      $template->param(
          'build2' => 1,
          'area'   => scalar $input->param('area'),
          'types'  => get_report_types(),
          'cache_expiry' => $cache_expiry,
          'public' => scalar $input->param('public'),
      );
    }
}

elsif ( $op eq 'cud-choose_type' ) {
    # they have chosen type and area
    # get area and type and pass them to the template
    my $area = $input->param('area');
    my $type = $input->param('types');
    $template->param(
        'build3' => 1,
        'area'   => $area,
        'type'   => $type,
        columns  => get_columns($area,$input),
        'cache_expiry' => scalar $input->param('cache_expiry'),
        'public' => scalar $input->param('public'),
    );
}

elsif ( $op eq 'cud-choose_columns' ) {
    # we now know type, area, and columns
    # next step is the constraints
    my $area    = $input->param('area');
    my $type    = $input->param('type');
    my @columns = $input->multi_param('columns');
    my $column  = join( ',', @columns );

    $template->param(
        'build4' => 1,
        'area'   => $area,
        'type'   => $type,
        'column' => $column,
        definitions => get_from_dictionary($area),
        criteria    => get_criteria($area,$input),
        'public' => scalar $input->param('public'),
    );
    if ( $usecache ) {
        $template->param(
            cache_expiry => scalar $input->param('cache_expiry'),
            cache_expiry_units => scalar $input->param('cache_expiry_units'),
        );
    }

}

elsif ( $op eq 'cud-choose_criteria' ) {
    my $area     = $input->param('area');
    my $type     = $input->param('type');
    my $column   = $input->param('column');
    my @definitions = $input->multi_param('definition');
    my $definition = join (',',@definitions);
    my @criteria = $input->multi_param('criteria_column');
    my $query_criteria;
    foreach my $crit (@criteria) {
        my $value = $input->param( $crit . "_value" );

        # If value is not defined, then it may be range values
        if (!defined $value) {
            my $fromvalue = $input->param( "from_" . $crit . "_value" );
            my $tovalue   = $input->param( "to_"   . $crit . "_value" );

            if ($fromvalue && $tovalue) {
                $query_criteria .= " AND $crit >= '$fromvalue' AND $crit <= '$tovalue'";
            }
        } else {
            # don't escape runtime parameters, they'll be at runtime
            if ($value =~ /<<.*>>/) {
                $query_criteria .= " AND $crit=$value";
            } else {
                $query_criteria .= " AND $crit='$value'";
            }
        }
    }
    $template->param(
        'build5'         => 1,
        'area'           => $area,
        'type'           => $type,
        'column'         => $column,
        'definition'     => $definition,
        'criteriastring' => $query_criteria,
        'public' => scalar $input->param('public'),
    );
    if ( $usecache ) {
        $template->param(
            cache_expiry => scalar $input->param('cache_expiry'),
            cache_expiry_units => scalar $input->param('cache_expiry_units'),
        );
    }

    # get columns
    my @columns = split( ',', $column );
    my @total_by;

    # build structue for use by tmpl_loop to choose columns to order by
    # need to do something about the order of the order :)
	# we also want to use the %columns hash to get the plain english names
    foreach my $col (@columns) {
        my %total = (name => $col);
        my @selects = map {+{ value => $_ }} (qw(sum min max avg count));
        $total{'select'} = \@selects;
        push @total_by, \%total;
    }

    $template->param( 'total_by' => \@total_by );
}

elsif ( $op eq 'cud-choose_operations' ) {
    my $area     = $input->param('area');
    my $type     = $input->param('type');
    my $column   = $input->param('column');
    my $criteria = $input->param('criteria');
	my $definition = $input->param('definition');
    my @total_by = $input->multi_param('total_by');
    my $totals;
    foreach my $total (@total_by) {
        my $value = $input->param( $total . "_tvalue" );
        $totals .= "$value($total),";
    }

    $template->param(
        'build6'         => 1,
        'area'           => $area,
        'type'           => $type,
        'column'         => $column,
        'criteriastring' => $criteria,
        'totals'         => $totals,
        'definition'     => $definition,
        'cache_expiry' => scalar $input->param('cache_expiry'),
        'public' => scalar $input->param('public'),
    );

    # get columns
    my @columns = split( ',', $column );
    my @order_by;

    # build structue for use by tmpl_loop to choose columns to order by
    # need to do something about the order of the order :)
    foreach my $col (@columns) {
        my %order = (name => $col);
        my @selects = map {+{ value => $_ }} (qw(asc desc));
        $order{'select'} = \@selects;
        push @order_by, \%order;
    }

    $template->param( 'order_by' => \@order_by );
}

elsif ( $op eq 'cud-build_report' ) {

    # now we have all the info we need and can build the sql
    my $area     = $input->param('area');
    my $type     = $input->param('type');
    my $column   = $input->param('column');
    my $crit     = $input->param('criteria');
    my $totals   = $input->param('totals');
    my $definition = $input->param('definition');
    my $query_criteria=$crit;
    # split the columns up by ,
    my @columns = split( ',', $column );
    my @order_by = $input->multi_param('order_by');

    my $query_orderby;
    foreach my $order (@order_by) {
        my $value = $input->param( $order . "_ovalue" );
        if ($query_orderby) {
            $query_orderby .= ",$order $value";
        }
        else {
            $query_orderby = " ORDER BY $order $value";
        }
    }

    # get the sql
    my $sql =
      build_query( \@columns, $query_criteria, $query_orderby, $area, $totals, $definition );
    $template->param(
        'showreport' => 1,
        'area'       => $area,
        'sql'        => $sql,
        'type'       => $type,
        'cache_expiry' => scalar $input->param('cache_expiry'),
        'public' => scalar $input->param('public'),
    );
}

elsif ( $op eq 'save' ) {
    # Save the report that has just been built
    my $area = $input->param('area');
    my $sql  = $input->param('sql');
    my $type = $input->param('type');
    $template->param(
        'save' => 1,
        'area'  => $area,
        'sql'  => $sql,
        'type' => $type,
        'cache_expiry' => scalar $input->param('cache_expiry'),
        'public' => scalar $input->param('public'),
        'groups_with_subgroups' => groups_with_subgroups($area), # in case we have a report group that matches area
    );
}

elsif ( $op eq 'cud-save' ) {
    # save the sql pasted in by a user
    my $area  = $input->param('area');
    my $group = $input->param('group');
    my $subgroup = $input->param('subgroup');
    my $sql   = $input->param('sql');
    my $name  = $input->param('reportname');
    my $type  = $input->param('types');
    my $notes = $input->param('notes');
    my $cache_expiry = $input->param('cache_expiry');
    my $cache_expiry_units = $input->param('cache_expiry_units');
    my $public = $input->param('public');
    my $save_anyway = $input->param('save_anyway');
    my $tables = get_tables();


    # if we have the units, then we came from creating a report from SQL and thus need to handle converting units
    if( $cache_expiry_units ){
      if( $cache_expiry_units eq "minutes" ){
        $cache_expiry *= 60;
      } elsif( $cache_expiry_units eq "hours" ){
        $cache_expiry *= 3600; # 60 * 60
      } elsif( $cache_expiry_units eq "days" ){
        $cache_expiry *= 86400; # 60 * 60 * 24
      }
    }
    # check $cache_expiry isn't too large, Memcached::set requires it to be less than 30 days or it will be treated as if it were an absolute time stamp
    if( $cache_expiry && $cache_expiry >= 2592000 ){
      push @errors, {cache_expiry => $cache_expiry};
    }

    create_non_existing_group_and_subgroup($input, $group, $subgroup);
    ## FIXME this is AFTER entering a name to save the report under
    my ( $is_sql_valid, $validation_errors ) = Koha::Report->new({ savedsql => $sql })->is_sql_valid;
    push(@errors, @$validation_errors) unless $is_sql_valid;

    if (@errors) {
        $template->param(
            'errors'    => \@errors,
            'sql'       => $sql,
            'reportname'=> $name,
            'type'      => $type,
            'notes'     => $notes,
            'cache_expiry' => $cache_expiry,
            'public'    => $public,
        );
    } else {
        # Check defined SQL parameters for authorised value validity
        my $problematic_authvals = ValidateSQLParameters($sql);

        if ( scalar @$problematic_authvals > 0 && not $save_anyway ) {
            # There's at least one problematic parameter, report to the
            # GUI and provide all user input for further actions
            $template->param(
                'area' => $area,
                'group' =>  $group,
                'subgroup' => $subgroup,
                'sql' => $sql,
                'reportname' => $name,
                'type' => $type,
                'notes' => $notes,
                'public' => $public,
                'problematic_authvals' => $problematic_authvals,
                'warn_authval_problem' => 1,
                'phase_save' => 1
            );
            if ( $usecache ) {
                $template->param(
                    cache_expiry => $cache_expiry,
                    cache_expiry_units => $cache_expiry_units,
                );
            }
        } else {
            # No params problem found or asked to save anyway
            my $id = save_report( {
                    borrowernumber => $borrowernumber,
                    sql            => $sql,
                    name           => $name,
                    area           => $area,
                    group          => $group,
                    subgroup       => $subgroup,
                    type           => $type,
                    notes          => $notes,
                    cache_expiry   => $cache_expiry,
                    public         => $public,
                } );
                logaction( "REPORTS", "ADD", $id, "$name | $sql" ) if C4::Context->preference("ReportsLog");
            $template->param(
                'save_successful' => 1,
                'reportname'      => $name,
                'id'              => $id,
                'editsql'         => 1,
                'sql'             => $sql,
                'groups_with_subgroups' => groups_with_subgroups($group, $subgroup),
                'notes'      => $notes,
                'cache_expiry' => $cache_expiry,
                'public' => $public,
                'usecache' => $usecache,
                'tables' => $tables
            );
        }
    }
}

elsif ($op eq 'cud-share'){
    my $lang = $input->param('mana_language') || '';
    my $reportid = $input->param('reportid');
    my $result = Koha::SharedContent::send_entity($lang, $borrowernumber, $reportid, 'report');
    if ( $result ) {
        print $input->redirect("/cgi-bin/koha/reports/guided_reports.pl?op=listmanamsg=".$result->{msg});
    }else{
        print $input->redirect("/cgi-bin/koha/reports/guided_reports.pl?op=list&manamsg=noanswer");
    }
}

elsif ($op eq 'export'){

	# export results to tab separated text or CSV
    my $report_id   = $input->param('id');
    my $report      = Koha::Reports->find($report_id);
    my $sql         = $report->savedsql;
    my @param_names = $input->multi_param('param_name');
    my @sql_params  = $input->multi_param('sql_params');
    my $format      = $input->param('format');
    my $reportname  = $input->param('reportname');
    my $reportfilename =
        $reportname ? "$report_id-$reportname-reportresults.$format" : "$report_id-reportresults.$format";
    my $scrubber = C4::Scrubber->new();

    ($sql, undef) = $report->prep_report( \@param_names, \@sql_params );
    my ( $sth, $q_errors ) = execute_query( { sql => $sql, report_id => $report_id } );
    unless ($q_errors and @$q_errors) {
        my ( $type, $content );
        if ($format eq 'tab') {
            $type = 'application/octet-stream';
            $content .= join("\t", header_cell_values($sth)) . "\n";
            $content = $scrubber->scrub( Encode::decode( 'UTF-8', $content ) );
            while ( my $row = $sth->fetchrow_arrayref() ) {
                $content .= join( "\t", $scrubber->scrub(@$row) ) . "\n";
            }
        } else {
            if ( $format eq 'csv' ) {
                my $delimiter = C4::Context->csv_delimiter;
                $type = 'application/csv';
                my $csv = Text::CSV::Encoded->new({ encoding_out => 'UTF-8', sep_char => $delimiter});
                $csv or die "Text::CSV::Encoded->new({binary => 1}) FAILED: " . Text::CSV::Encoded->error_diag();
                if ( $csv->combine( header_cell_values($sth) ) ) {
                    $content .= $scrubber->scrub( Encode::decode( 'UTF-8', $csv->string() ) ) . "\n";

                } else {
                    push @$q_errors, { combine => 'HEADER ROW: ' . $csv->error_diag() };
                }
                while ( my $row = $sth->fetchrow_arrayref() ) {
                    if ( $csv->combine(@$row) ) {
                        $content .= $scrubber->scrub( $csv->string() ) . "\n";

                    } else {
                        push @$q_errors, { combine => $csv->error_diag() };
                    }
                }
            }
            elsif ( $format eq 'ods' ) {
                $type = 'application/vnd.oasis.opendocument.spreadsheet';
                my $ods_fh = File::Temp->new( UNLINK => 0 );
                my $ods_filepath = $ods_fh->filename;
                my $ods_content;

                # First line is headers
                my @headers = header_cell_values($sth);
                push @$ods_content, \@headers;

                # Other line in Unicode
                my $sql_rows = $sth->fetchall_arrayref();
                foreach my $sql_row (@$sql_rows) {
                    my @content_row;
                    foreach my $sql_cell (@$sql_row) {
                        push @content_row, $scrubber->scrub( Encode::encode( 'UTF8', $sql_cell ) );

                    }
                    push @$ods_content, \@content_row;
                }

                # Process
                generate_ods($ods_filepath, $ods_content);

                # Output
                binmode(STDOUT);
                open $ods_fh, '<', $ods_filepath;
                $content .= $_ while <$ods_fh>;
                unlink $ods_filepath;
            }
            elsif ( $format eq 'template' ) {
                my $template_id     = $input->param('template');
                my $notice_template = Koha::Notice::Templates->find($template_id);
                my $data            = $sth->fetchall_arrayref( {} );
                $content = process_tt(
                    $notice_template->content,
                    {
                        data         => $data,
                        report_id    => $report_id,
                        for_download => 1,
                    }
                );
                $reportfilename = process_tt(
                    $notice_template->title,
                    {
                        data      => $data,
                        report_id => $report_id,
                    }
                );
            }
        }
        print $input->header(
            -type => $type,
            -attachment=> $reportfilename
        );
        print $content;

        foreach my $err (@$q_errors, @errors) {
            print "# ERROR: " . (map {$_ . ": " . $err->{$_}} keys %$err) . "\n";
        }   # here we print all the non-fatal errors at the end.  Not super smooth, but better than nothing.
        exit;
    }
    $template->param(
        'sql'           => $sql,
        'execute'       => 1,
        'name'          => 'Error exporting report!',
        'notes'         => '',
        'errors'        => $q_errors,
    );
}

elsif ( $op eq 'add_form_sql' || $op eq 'duplicate' ) {

    my ($group, $subgroup, $sql, $reportname, $notes);
    if ( $input->param('sql') ) {
        $group      = $input->param('report_group');
        $subgroup   = $input->param('report_subgroup');
        $sql        = $input->param('sql') // '';
        $reportname = $input->param('reportname') // '';
        $notes      = $input->param('notes') // '';
    }
    elsif ( my $report_id = $input->param('id') ) {
        my $report = Koha::Reports->find($report_id);
        $group      = $report->report_group;
        $subgroup   = $report->report_subgroup;
        $sql        = $report->savedsql // '';
        $reportname = $report->report_name // '';
        $notes      = $report->notes // '';
    }

    my $tables = get_tables();

    $template->param(
        sql        => $sql,
        reportname => $reportname,
        notes      => $notes,
        'create' => 1,
        'groups_with_subgroups' => groups_with_subgroups($group, $subgroup),
        'public' => '0',
        'cache_expiry' => 300,
        'usecache' => $usecache,
        'tables' => $tables,

    );
}

if ($op eq 'run'){
    # execute a saved report
    my $limit           = $input->param('limit') || 20;
    my $offset          = 0;
    my $report_id       = $input->param('id');
    my @sql_params      = $input->multi_param('sql_params');
    my @param_names     = $input->multi_param('param_name');
    my $template_id     = $input->param('template');
    my $want_full_chart = $input->param('want_full_chart') || 0;


    # offset algorithm
    if ($input->param('page')) {
        $offset = ($input->param('page') - 1) * $limit;
    }

    $template->param(
        'limit' => $limit,
        'id'    => $report_id,
    );

    my ( $sql, $original_sql, $type, $name, $notes );
    if (my $report = Koha::Reports->find($report_id)) {
        $sql   = $original_sql = $report->savedsql;
        $name  = $report->report_name;
        $notes = $report->notes;

        my @rows = ();
        my @allrows = ();
        # if we have at least 1 parameter, and it's not filled, then don't execute but ask for parameters
        if ($sql =~ /<</ && !@sql_params) {
            # split on ??. Each odd (2,4,6,...) entry should be a parameter to fill
            my @split = split /<<|>>/,$sql;
            my @tmpl_parameters;
            my @authval_errors;
            my %uniq_params;
            for(my $i=0;$i<($#split/2);$i++) {
                my ($text,$authorised_value_all) = split /\|/,$split[$i*2+1];
                my $sep = $authorised_value_all ? "|" : "";
                if( defined $uniq_params{$text.$sep.$authorised_value_all} ){
                    next;
                } else { $uniq_params{$text.$sep.$authorised_value_all} = "$i"; }
                my ($authorised_value, $param_options) = split /:/, $authorised_value_all;
                my $all;
                my $multiple;
                if ( $param_options eq "all" ) {
                    $all = "all";
                } elsif ( $param_options eq "in" ) {
                    $multiple = "multiple";
                }
                my $input;
                my $labelid;
                if ( not defined $authorised_value ) {
                    # no authorised value input, provide a text box
                    $input = "text";
                } elsif ( $authorised_value eq "date" ) {
                    # require a date, provide a date picker
                    $input = 'date';
                } elsif ( $authorised_value eq "list" ) {
                    # require a list, provide a textarea
                    $input = 'textarea';
                } else {
                    # defined $authorised_value, and not 'date'
                    my $dbh=C4::Context->dbh;
                    my @authorised_values;
                    my %authorised_lib;
                    # builds list, depending on authorised value...
                    if ( $authorised_value eq "branches" ) {
                        my $libraries = Koha::Libraries->search( {}, { order_by => ['branchname'] } );
                        while ( my $library = $libraries->next ) {
                            push @authorised_values, $library->branchcode;
                            $authorised_lib{$library->branchcode} = $library->branchname;
                        }
                    }
                    elsif ( $authorised_value eq "itemtypes" ) {
                        my $sth = $dbh->prepare("SELECT itemtype,description FROM itemtypes ORDER BY description");
                        $sth->execute;
                        while ( my ( $itemtype, $description ) = $sth->fetchrow_array ) {
                            push @authorised_values, $itemtype;
                            $authorised_lib{$itemtype} = $description;
                        }
                    }
                    elsif ( $authorised_value eq "biblio_framework" ) {
                        my @frameworks = Koha::BiblioFrameworks->search({}, { order_by => ['frameworktext'] })->as_list;
                        my $default_source = '';
                        push @authorised_values,$default_source;
                        $authorised_lib{$default_source} = 'Default';
                        foreach my $framework (@frameworks) {
                            push @authorised_values, $framework->frameworkcode;
                            $authorised_lib{$framework->frameworkcode} = $framework->frameworktext;
                        }
                    }
                    elsif ( $authorised_value eq "cn_source" ) {
                        my $class_sources = GetClassSources();
                        my $default_source = C4::Context->preference("DefaultClassificationSource");
                        foreach my $class_source (sort keys %$class_sources) {
                            next unless $class_sources->{$class_source}->{'used'} or
                                        ($class_source eq $default_source);
                            push @authorised_values, $class_source;
                            $authorised_lib{$class_source} = $class_sources->{$class_source}->{'description'};
                        }
                    }
                    elsif ( $authorised_value eq "categorycode" ) {
                        my @patron_categories = Koha::Patron::Categories->search({}, { order_by => ['description']})->as_list;
                        %authorised_lib = map { $_->categorycode => $_->description } @patron_categories;
                        push @authorised_values, $_->categorycode for @patron_categories;
                    }
                    elsif ( $authorised_value eq "cash_registers" ) {
                        my $sth = $dbh->prepare("SELECT id, name FROM cash_registers ORDER BY description");
                        $sth->execute;
                        while ( my ( $id, $name ) = $sth->fetchrow_array ) {
                            push @authorised_values, $id;
                            $authorised_lib{$id} = $name;
                        }
                    }
                    elsif ( $authorised_value eq "debit_types" ) {
                        my $sth = $dbh->prepare("SELECT code, description FROM account_debit_types ORDER BY code");
                        $sth->execute;
                        while ( my ( $code, $description ) = $sth->fetchrow_array ) {
                           push @authorised_values, $code;
                           $authorised_lib{$code} = $description;
                        }
                    }
                    elsif ( $authorised_value eq "credit_types" ) {
                        my $sth = $dbh->prepare("SELECT code, description FROM account_credit_types ORDER BY code");
                        $sth->execute;
                        while ( my ( $code, $description ) = $sth->fetchrow_array ) {
                           push @authorised_values, $code;
                           $authorised_lib{$code} = $description;
                        }
                    }
                    else {
                        if ( Koha::AuthorisedValues->search({ category => $authorised_value })->count ) {
                            my $query = '
                            SELECT authorised_value,lib
                            FROM authorised_values
                            WHERE category=?
                            ORDER BY lib
                            ';
                            my $authorised_values_sth = $dbh->prepare($query);
                            $authorised_values_sth->execute( $authorised_value);

                            while ( my ( $value, $lib ) = $authorised_values_sth->fetchrow_array ) {
                                push @authorised_values, $value;
                                $authorised_lib{$value} = $lib;
                                # For item location, we show the code and the libelle
                                $authorised_lib{$value} = $lib;
                            }
                        } else {
                            # not exists $authorised_value_categories{$authorised_value})
                            push @authval_errors, {'entry' => $text,
                                                   'auth_val' => $authorised_value };
                            # tell the template there's an error
                            $template->param( auth_val_error => 1 );
                            # skip scrolling list creation and params push
                            next;
                        }
                    }
                    $labelid = $text;
                    $labelid =~ s/\W//g;
                    $input = {
                        name    => "sql_params",
                        id      => "sql_params_".$labelid,
                        values  => \@authorised_values,
                        labels  => \%authorised_lib,
                    };
                }

                push @tmpl_parameters, {'entry' => $text, 'input' => $input, 'labelid' => $labelid, 'name' => $text.$sep.$authorised_value_all, 'include_all' => $all, 'select_multiple' => $multiple };
            }
            $template->param('sql'         => $sql,
                            'name'         => $name,
                            'notes'         => $notes,
                            'sql_params'   => \@tmpl_parameters,
                            'auth_val_errors'  => \@authval_errors,
                            'enter_params' => 1,
                            'id'           => $report_id,
                            );
        } else {
            my ($sql,$header_types) = $report->prep_report( \@param_names, \@sql_params );
            $template->param(header_types => $header_types);
            my ( $sth, $errors ) = execute_query(
                {
                    sql        => $sql,
                    offset     => $offset,
                    limit      => $limit,
                    report_id  => $report_id,
                }
            );
            my $total;
            if (!$sth) {
                die "execute_query failed to return sth for report $report_id: $sql";
            } elsif ( !$errors ) {
                $total = nb_rows($sql) || 0;
                my $headers = header_cell_loop($sth);
                $template->param(header_row => $headers);
                while (my $row = $sth->fetchrow_arrayref()) {
                    my @cells = map { +{ cell => $_ } } @$row;
                    push @rows, { cells => \@cells };
                }
                if( $want_full_chart ){
                    my ( $sth2, $errors2 ) = execute_query( { sql => $sql, report_id => $report_id } );
                    while (my $row = $sth2->fetchrow_arrayref()) {
                        my @cells = map { +{ cell => $_ } } @$row;
                        push @allrows, { cells => \@cells };
                    }
                }

                my $totpages = int($total/$limit) + (($total % $limit) > 0 ? 1 : 0);
                my $url = "/cgi-bin/koha/reports/guided_reports.pl?id=$report_id&amp;op=run&amp;limit=$limit&amp;want_full_chart=$want_full_chart";
                if (@param_names) {
                    $url = join('&amp;param_name=', $url, map { URI::Escape::uri_escape_utf8($_) } @param_names);
                }
                if (@sql_params) {
                    $url = join('&amp;sql_params=', $url, map { URI::Escape::uri_escape_utf8($_) } @sql_params);
                }

                if ($template_id) {
                    my $notice_template = Koha::Notice::Templates->find($template_id);
                    my ( $sth2, $errors2 ) = execute_query( { sql => $sql, report_id => $report_id } );
                    my $data = $sth2->fetchall_arrayref( {} );
                    my $notice_rendered =
                        process_tt( $notice_template->content, { data => $data, report_id => $report_id } );
                    my $title_rendered =
                        process_tt( $notice_template->title, { data => $data, report_id => $report_id } );
                    $template->param(
                        template_id            => $template_id,
                        processed_notice       => $notice_rendered,
                        processed_notice_title => $title_rendered,
                    );
                }

                $template->param(
                    'results'        => \@rows,
                    'allresults'     => \@allrows,
                    'pagination_bar' => pagination_bar($url, $totpages, scalar $input->param('page')),
                    'unlimited_total' => $total,
                );
            }
            $template->param(
                'sql'         => $sql,
                original_sql  => $original_sql,
                'id'          => $report_id,
                'execute'     => 1,
                'name'        => $name,
                'notes'       => $notes,
                'errors'      => defined($errors) ? [$errors] : undef,
                'sql_params'  => \@sql_params,
                'param_names' => \@param_names,
            );
        }
    }
    else {
        push @errors, { no_sql_for_id => $report_id };
    }
}

if ( $op eq 'list' || $op eq 'convert') {

    if ( $op eq 'convert' ) {
        my $report_id = $input->param('id');
        my $report    = Koha::Reports->find($report_id);
        if ($report) {
            my $updated_sql = C4::Reports::Guided::convert_sql( $report->savedsql );
            C4::Reports::Guided::update_sql(
                $report_id,
                {
                    sql          => $updated_sql,
                    name         => $report->report_name,
                    group        => $report->report_group,
                    subgroup     => $report->report_subgroup,
                    notes        => $report->notes,
                    public       => $report->public,
                    cache_expiry => $report->cache_expiry,
                }
            );
            $template->param( report_converted => $report->report_name );
        }
    }

    # use a saved report
    # get list of reports and display them
    my $group = $input->param('group');
    my $subgroup = $input->param('subgroup');
    $filter->{group} = $group;
    $filter->{subgroup} = $subgroup;
    my $reports = get_saved_reports($filter);
    my $has_obsolete_reports;
    for my $report ( @$reports ) {
        $report->{results} = C4::Reports::Guided::get_results( $report->{id} );
        if ( $report->{savedsql} =~ m|biblioitems| and $report->{savedsql} =~ m|marcxml| ) {
            $report->{seems_obsolete} = 1;
            $has_obsolete_reports++;
        }
    }
    $template->param(
        'manamsg' => $input->param('manamsg') || '',
        'saved1'                => 1,
        'savedreports'          => $reports,
        'usecache'              => $usecache,
        'groups_with_subgroups' => groups_with_subgroups( $group, $subgroup ),
        filters                 => $filter,
        has_obsolete_reports    => $has_obsolete_reports,
    );
}
# pass $sth, get back an array of names for the column headers
sub header_cell_values {
    my $sth = shift or return ();
    return '' unless ($sth->{NAME});
    return @{$sth->{NAME}};
}

# pass $sth, get back a TMPL_LOOP-able set of names for the column headers
sub header_cell_loop {
    my @headers = map { +{ cell => decode('UTF-8',$_) } } header_cell_values (shift);
    return \@headers;
}

#get a list of available tables for auto-complete
sub get_tables {
    my $result = {};
    my $cache  = Koha::Caches->get_instance();
    my $tables = $cache->get_from_cache("Reports-SQL_tables-for-autocomplete");

    return $tables
      if $tables;

    $tables = C4::Reports::Guided->get_all_tables();
    for my $table (@{$tables}) {
        my $sql = "SHOW COLUMNS FROM $table";
        my $rows = C4::Context->dbh->selectall_arrayref($sql, { Slice => {} });
        for my $row (@{$rows}) {
            push @{$result->{$table}}, $row->{Field};
        }
    }
    $cache->set_in_cache("Reports-SQL_tables-for-autocomplete",$result);
    return $result;
}

foreach (1..6) {
     $template->{VARS}->{'build' . $_} and last;
}
$template->param(   'referer' => $input->referer(),
                );

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

sub groups_with_subgroups {
    my ($group, $subgroup) = @_;

    my $groups_with_subgroups = get_report_groups();
    my @g_sg;
    my @sorted_keys = sort {
        $groups_with_subgroups->{$a}->{name} cmp $groups_with_subgroups->{$b}->{name}
    } keys %$groups_with_subgroups;
    foreach my $g_id (@sorted_keys) {
        my $v = $groups_with_subgroups->{$g_id};
        my @subgroups;
        if (my $sg = $v->{subgroups}) {
            foreach my $sg_id (sort { $sg->{$a} cmp $sg->{$b} } keys %$sg) {
                push @subgroups, {
                    id => $sg_id,
                    name => $sg->{$sg_id},
                    selected => ($group && $g_id eq $group && $subgroup && $sg_id eq $subgroup ),
                };
            }
        }
        push @g_sg, {
            id => $g_id,
            name => $v->{name},
            selected => ($group && $g_id eq $group),
            subgroups => \@subgroups,
        };
    }
    return \@g_sg;
}

sub create_non_existing_group_and_subgroup {
    my ($input, $group, $subgroup) = @_;
    if (defined $group and $group ne '') {
        my $report_groups = C4::Reports::Guided::get_report_groups;
        if (not exists $report_groups->{$group}) {
            my $groupdesc = $input->param('groupdesc') // $group;
            Koha::AuthorisedValue->new({
                category => 'REPORT_GROUP',
                authorised_value => $group,
                lib => $groupdesc,
            })->store;
            my $cache_key = "AuthorisedValues-REPORT_GROUP-0-".C4::Context->userenv->{"branch"};
            my $cache  = Koha::Caches->get_instance();
            my $result = $cache->clear_from_cache($cache_key);
        }
        if (defined $subgroup and $subgroup ne '') {
            if (not exists $report_groups->{$group}->{subgroups}->{$subgroup}) {
                my $subgroupdesc = $input->param('subgroupdesc') // $subgroup;
                Koha::AuthorisedValue->new({
                    category => 'REPORT_SUBGROUP',
                    authorised_value => $subgroup,
                    lib => $subgroupdesc,
                    lib_opac => $group,
                })->store;
            my $cache_key = "AuthorisedValues-REPORT_SUBGROUP-0-".C4::Context->userenv->{"branch"};
            my $cache  = Koha::Caches->get_instance();
            my $result = $cache->clear_from_cache($cache_key);
            }
        }
    }
}