#!/usr/bin/perl -w
###############################################################################
=pod

=head1 NAME

mig-skip-clean 

Allows you to either use an existing file named <file>.utf8.clean or a
named [cleaned file] as if it were the one created by mig-clean

Note that the clean file, however specified, should contain headers. The
remaining tools in the chain will expect this.

=head1 SYNOPSIS

B<mig-skip-clean> <file> [cleaned file]

=cut

###############################################################################

use strict;
use Switch;
use Env qw(
    HOME PGHOST PGPORT PGUSER PGDATABASE MIGSCHEMA
    MIGBASEWORKDIR MIGBASEGITDIR MIGGITDIR MIGWORKDIR
);
use Pod::Usage;
use DBI;
use Cwd 'abs_path';
use FindBin;
my $mig_bin = "$FindBin::Bin/";
use lib "$FindBin::Bin/";
use Mig;

pod2usage(-verbose => 2) if ! ($ARGV[0]||$ARGV[1]) || $ARGV[0] eq '--help';

Mig::die_if_no_env_migschema();
Mig::die_if_mig_tracking_table_does_not_exist();

my $file = abs_path($ARGV[0]);
my $clean_file;
if ($ARGV[1]) {
    $clean_file = abs_path($ARGV[1]);
} else {
    $clean_file = $file;
}
if ($clean_file && ! $clean_file =~ /^$MIGBASEWORKDIR/) {
    die "File falls outside of MIGWORKDIR ($MIGWORKDIR): $clean_file\n";
}

if ($file =~ /^$MIGBASEWORKDIR/) {
    skip_clean($file,$clean_file);
} else {
    die "File falls outside of MIGWORKDIR ($MIGWORKDIR): $file\n";
}

exit 0;

###############################################################################

sub skip_clean {
    my $file = shift;
    my $clean_file = shift;

    my $tracked_file_id = Mig::check_for_tracked_file($file);
    if ($tracked_file_id) {
        my $data = Mig::status_this_file($file);

        if (! $data->{'utf8_filename'}) {
            die "mig-iconv or mig-skip-iconv needed for UTF8 version of file: $file\n";
        }

        my $utf8_file = $data->{'utf8_filename'};
        if (! -e $utf8_file) {
            die "missing file: $utf8_file\n";
        }

        print "skipping cleaning of tracked file: $file\n";

        my $dbh = Mig::db_connect();
        if (! $clean_file) {
            $clean_file = $utf8_file . '.clean';
        }
        if (! -e $clean_file) {
            die "clean file does not exist: $clean_file\n";
        }

        my $rv = $dbh->do("
            UPDATE $MIGSCHEMA.tracked_file
            SET clean_filename = " . $dbh->quote($clean_file) . "
            WHERE base_filename = " . $dbh->quote($file) . "
            ;
        ") || die "Error inserting into table $MIGSCHEMA.tracked_file: $!\n";
        Mig::db_disconnect($dbh);
    } else {
        die "File not currently tracked: $file\n";
    }
}