#!/usr/bin/perl

use strict;
use warnings;

use DBI;
use Data::Dumper;
use Env qw(
    HOME MYSQL_HOST MYSQL_TCP_PORT MYSQL_USER MYSQL_DATABASE MYSQL_PW
        MIGSCHEMA MIGBASEWORKDIR MIGBASEGITDIR MIGGITDIR MIGWORKDIR
);
use open ':encoding(utf8)';
use Cwd 'abs_path';
use Cwd qw(getcwd);
use FindBin;
my $mig_bin = "$FindBin::Bin/";
use lib "$FindBin::Bin/";
use KMig;

my $dbh = KMig::db_connect();

#to do check for array passed and if not present then use tags 

my @taglist = @ARGV;
my $arg_list_length = scalar @taglist;
if($arg_list_length < 1) { @taglist = ("preferences","authorisedvalues","libraries","borrowerattributes"); } 

my $timestamp = create_timestamp();

foreach my $backup (@taglist) {
    my $backupfile;
    if ($backup eq 'preferences') {
	$backupfile = $MIGGITDIR . 'systempreferences' . '.' . $timestamp . '.csv';
        backup_preferences($dbh,$backupfile);
    }
    if ($backup eq 'authorisedvalues') {
	$backupfile = $MIGGITDIR . 'authorised_values' . '.' . $timestamp . '.csv';
	backup_authorised_values($dbh,$backupfile);
        $backupfile = $MIGGITDIR . 'authorised_value_categories' . '.' . $timestamp . '.csv';
	backup_authorised_value_categories($dbh,$backupfile);
    }
    if ($backup eq 'borrowerattributes') {
        $backupfile = $MIGGITDIR . 'borrower_attribute_types' . '.' . $timestamp . '.csv';
        backup_borrower_attribute_types($dbh,$backupfile);
        $backupfile = $MIGGITDIR . 'authorised_values_by_bat' . '.' . $timestamp . '.csv';
        backup_authorised_values_by_bat($dbh,$backupfile);
        $backupfile = $MIGGITDIR . 'authorised_value_categories_by_bat' . '.' . $timestamp . '.csv';
        backup_authorised_value_categories_by_bat($dbh,$backupfile);
    }
    if ($backup eq 'libraries') {
        $backupfile = $MIGGITDIR . 'libraries' . '.' . $timestamp . '.csv';
        backup_libraries($dbh,$backupfile);
    }
}

sub backup_authorised_values {
    my $dbh = shift;
    my $backupfile = shift;

    open(my $fh, '>', $backupfile) or die "Could not open $backupfile!";
    print $fh "category,authorised_value,lib,lib_opac,imageurl\n";
    my $query = "SELECT category,authorised_value,lib,lib_opac,imageurl FROM authorised_values";
    my $sth = $dbh->prepare($query);
    $sth->execute();

    while (my @row = $sth->fetchrow_array) {
        my $category = csvify_str($row[0]);
        my $authvalue = csvify_str($row[1]);
        my $lib = csvify_str($row[2]);
        my $lib_opac = csvify_str($row[3]); 
        my $imageurl = csvify_str($row[4]);
        print $fh "$category,$authvalue,$lib,$lib_opac,$imageurl\n";
    }
    close $fh;
    return;
}

sub backup_authorised_values_by_bat {
    my $dbh = shift;
    my $backupfile = shift;

    open(my $fh, '>', $backupfile) or die "Could not open $backupfile!";
    print $fh "category,authorised_value,lib,lib_opac,imageurl\n";
    my $query = "SELECT category,authorised_value,lib,lib_opac,imageurl FROM authorised_values where category in (select category_code from borrower_attribute_types);";
    my $sth = $dbh->prepare($query);
    $sth->execute();

    while (my @row = $sth->fetchrow_array) {
        my $category = csvify_str($row[0]);
        my $authvalue = csvify_str($row[1]);
        my $lib = csvify_str($row[2]);
        my $lib_opac = csvify_str($row[3]); 
        my $imageurl = csvify_str($row[4]);
        print $fh "$category,$authvalue,$lib,$lib_opac,$imageurl\n";
    }
    close $fh;
    return;
}

sub backup_authorised_value_categories {
    my $dbh = shift;
    my $backupfile = shift;

    open(my $fh, '>', $backupfile) or die "Could not open $backupfile!";
    print $fh "category_name\n";
    my $query = "SELECT category_name FROM authorised_value_categories";
    my $sth = $dbh->prepare($query);
    $sth->execute();

    while (my @row = $sth->fetchrow_array) {
        my $str = csvify_str($row[0]);
        print $fh "$str\n";
    }
    close $fh;
    return;
}

sub backup_authorised_value_categories_by_bat {
    my $dbh = shift;
    my $backupfile = shift;

    open(my $fh, '>', $backupfile) or die "Could not open $backupfile!";
    print $fh "category_name\n";
    my $query = "SELECT category_name FROM authorised_value_categories WHERE category_name IN (select category_name from borrower_attribute_types)";
    my $sth = $dbh->prepare($query);
    $sth->execute();

    while (my @row = $sth->fetchrow_array) {
        my $str = csvify_str($row[0]);
        print $fh "$str\n";
    }
    close $fh;
    return;
}

sub backup_borrower_attribute_types {
    my $dbh = shift;
    my $backupfile = shift;

    open(my $fh, '>', $backupfile) or die "Could not open $backupfile!";
    print $fh "code,description,repeateable,opac_display,opac_editable,staff_searchable,authorised_value_category,display_checkout,category_code,class\n";
    my $query = "SELECT code,description,repeatable,opac_display,opac_editable,staff_searchable,authorised_value_category,display_checkout,category_code,class FROM borrower_attribute_types";
    my $sth = $dbh->prepare($query);
    $sth->execute();

    while (my @row = $sth->fetchrow_array) {
        my $code = csvify_str($row[0]);
	my $descr = csvify_str($row[1]);
	my $repeat = $row[2];
	my $opac_display = $row[3];
	my $staff_searchable = $row[4];
	my $auth_value_cat = csvify_str($row[5]);
	my $display_chkout = $row[6];
	my $cat_code = csvify_str($row[7]);
	my $class = csvify_str($row[8]);
        print $fh "$code,$descr,$repeat,$opac_display,$staff_searchable,$auth_value_cat,$display_chkout,$cat_code,$class\n";
    }
    close $fh;
    return;
}

sub backup_libraries {
    my $dbh = shift;
    my $backupfile = shift;

    open(my $fh, '>', $backupfile) or die "Could not open $backupfile!";
    print $fh "id,parent_id,branchcode,title,description,ft_hide_patron_info,ft_search_groups_opac,ft_search_groups_staff\n";
    my $query = "SELECT id,parent_id,branchcode,title,description,ft_hide_patron_info,ft_search_groups_opac,ft_search_groups_staff FROM library_groups";
    my $sth = $dbh->prepare($query);
    $sth->execute();

    while (my @row = $sth->fetchrow_array) {
        my $id = $row[0];
        my $parent_id = $row[1];
	my $branchcode = csvify_str($row[2]);
	my $title = csvify_str($row[3]);
	my $description = csvify_str($row[4]);
	my $ft_hide_patron_info = $row[5];
	my $ft_search_groups_opac = $row[6];
	my $ft_search_groups_staff = $row[7];
        print $fh "$id,$parent_id,$branchcode,$title,$description,$ft_hide_patron_info,$ft_search_groups_opac,$ft_search_groups_staff\n";
    }
    close $fh;
    return;
}


sub backup_preferences {
    my $dbh = shift;
    my $backupfile = shift;

    open(my $fh, '>', $backupfile) or die "Could not open $backupfile!";
    print $fh "variable,value\n";
    my $query = "SELECT variable,value FROM systempreferences WHERE value != '' AND value IS NOT NULL";
    my $sth = $dbh->prepare($query);
    $sth->execute();

    while (my @row = $sth->fetchrow_array) {
        my $variable = csvify_str($row[0]);
        my $value = csvify_str($row[1]);
        print $fh "$variable,$value\n";
    }
    close $fh;
    return;
}

sub create_timestamp {
    my ($sec,$min,$hour,$mday,$mon,$year,$wday,$yday,$isdst) = localtime(time);
    $year += 1900;
    $mon = sprintf("%02s",$mon);
    $mday = sprintf("%02s",$mday);
    $hour = sprintf("%02s",$hour);
    $min = sprintf("%02s",$min);
    $sec = sprintf("%02s",$sec);
    my $str = "$year$mon$mday$hour$min$sec";
    return $str;
}

sub csvify_str {
    my $str = shift;
    if (!defined $str or $str eq '') { return ''; }
    $str =~ s/"/\"/g;
    $str = '"' . $str . '"';
    return $str;
}

sub abort {
    my $msg = shift;
    print STDERR "$0: $msg", "\n";
    print_usage();
    exit 1;
}

sub print_usage {
    print <<_USAGE_;

    mig export foo_a foo_b foo_c

_USAGE_
}