#!/usr/bin/perl

# Copyright 2013 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 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 C4::Auth qw( get_template_and_user );
use CGI qw ( -utf8 );
use C4::Context;
use C4::Output qw( output_html_with_http_headers );
use C4::Search::History;



my $cgi = CGI->new;

# Getting the template and auth
my ($template, $loggedinuser, $cookie) = get_template_and_user(
    {
        template_name => "opac-search-history.tt",
        query => $cgi,
        type => "opac",
        authnotrequired => ( C4::Context->preference("OpacPublic") ? 1 : 0 ),
    }
);

unless ( C4::Context->preference("EnableOpacSearchHistory") ) {
    print $cgi->redirect("/cgi-bin/koha/errors/404.pl"); # escape early
    exit;
}

my $type = $cgi->param('type');
my $action = $cgi->param('action') || q{};
my $previous = $cgi->param('previous');

# If the user is not logged in, we deal with the session
unless ( $loggedinuser ) {
    # Deleting search history
    if ( $action eq 'delete') {
        # Deleting session's search history
        my @id = $cgi->multi_param('id');
        my $all = not scalar( @id );

        my $type = $cgi->param('type');
        my @searches = ();
        unless ( $all ) {
            @searches = C4::Search::History::get_from_session({ cgi => $cgi });
            if ( $type ) {
                @searches = map { $_->{type} ne $type ? $_ : () } @searches;
            }
            if ( @id ) {
                @searches = map { my $search = $_; ( grep { $_ eq $search->{id} } @id ) ? () : $_ } @searches;
            }
        }
        C4::Search::History::set_to_session({ cgi => $cgi, search_history => \@searches });

        # Redirecting to this same url so the user won't see the search history link in the header
        print $cgi->redirect(-uri => '/cgi-bin/koha/opac-search-history.pl');
    # Showing search history
    } else {
        # Getting the searches from session
        my @current_searches = C4::Search::History::get_from_session({
            cgi => $cgi,
        });

        my @current_biblio_searches = map {
            $_->{type} eq 'biblio' ? $_ : ()
        } @current_searches;

        my @current_authority_searches = map {
            $_->{type} eq 'authority' ? $_ : ()
        } @current_searches;

        $template->param(
            current_biblio_searches => \@current_biblio_searches,
            current_authority_searches => \@current_authority_searches,
        );
    }
} else {
    # And if the user is logged in, we deal with the database
    my $dbh = C4::Context->dbh;

    # Deleting search history
    if ( $action eq 'delete' ) {
        my @id = $cgi->multi_param('id');
        if ( @id ) {
            C4::Search::History::delete(
                {
                    userid => $loggedinuser,
                    id     => [ @id ],
                }
            );
        } else {
            C4::Search::History::delete(
                {
                   userid => $loggedinuser,
                }
            );
        }
        # Redirecting to this same url so the user won't see the search history link in the header
        print $cgi->redirect(-uri => '/cgi-bin/koha/opac-search-history.pl');

    # Showing search history
    } else {
        my $current_searches = C4::Search::History::get({
            userid => $loggedinuser,
            sessionid => $cgi->cookie("CGISESSID")
        });
        my @current_biblio_searches = map {
            $_->{type} eq 'biblio' ? $_ : ()
        } @$current_searches;

        my @current_authority_searches = map {
            $_->{type} eq 'authority' ? $_ : ()
        } @$current_searches;

        my $previous_searches = C4::Search::History::get({
            userid => $loggedinuser,
            sessionid => $cgi->cookie("CGISESSID"),
            previous => 1
        });

        my @previous_biblio_searches = map {
            $_->{type} eq 'biblio' ? $_ : ()
        } @$previous_searches;

        my @previous_authority_searches = map {
            $_->{type} eq 'authority' ? $_ : ()
        } @$previous_searches;

        $template->param(
            current_biblio_searches => \@current_biblio_searches,
            current_authority_searches => \@current_authority_searches,
            previous_biblio_searches => \@previous_biblio_searches,
            previous_authority_searches => \@previous_authority_searches,

        );
    }
}

$template->param(searchhistoryview => 1);

output_html_with_http_headers $cgi, $cookie, $template->output, undef, { force_no_caching => 1 };