#!/usr/bin/env perl

BEGIN {
   die "The PERCONA_TOOLKIT_BRANCH environment variable is not set.\n"
      unless $ENV{PERCONA_TOOLKIT_BRANCH} && -d $ENV{PERCONA_TOOLKIT_BRANCH};
   unshift @INC, "$ENV{PERCONA_TOOLKIT_BRANCH}/lib";
};

use strict;
use warnings FATAL => 'all';
use English qw(-no_match_vars);
use Time::HiRes qw(sleep);
use Test::More;

use PerconaTest;
use Sandbox;
require "$trunk/bin/pt-fk-error-logger";

my $dp = new DSNParser(opts=>$dsn_opts);
my $sb = new Sandbox(basedir => '/tmp', DSNParser => $dp);
my $dbh = $sb->get_dbh_for('master');

if ( !$dbh ) {
   plan skip_all => 'Cannot connect to sandbox master';
}
else {
   plan tests => 7;
}

$sb->wipe_clean($dbh);
$sb->create_dbs($dbh, [qw(test)]);

my $output;
my $cnf = '/tmp/12345/my.sandbox.cnf';
my $cmd = "$trunk/bin/pt-fk-error-logger -F $cnf ";

$sb->load_file('master', 't/pt-fk-error-logger/samples/fke_tbl.sql', 'test');

# #########################################################################
# Test saving foreign key errors to --dest.
# #########################################################################

# First, create a foreign key error.
`/tmp/12345/use -D test < $trunk/t/pt-fk-error-logger/samples/fke.sql 1>/dev/null 2>/dev/null`;

# Then get and save that fke.
output(sub { pt_fk_error_logger::main('h=127.1,P=12345,u=msandbox,p=msandbox', '--dest', 'h=127.1,P=12345,D=test,t=foreign_key_errors'); } );
sleep 0.1;

# And then test that it was actually saved.
my $today = $dbh->selectall_arrayref('SELECT NOW()')->[0]->[0];
($today) = $today =~ m/(\d{4}-\d\d-\d\d)/;  # Just today's date.

my $fke = $dbh->selectall_arrayref('SELECT * FROM test.foreign_key_errors');
like(
   $fke->[0]->[0],  # Timestamp
   qr/$today/,
   'Saved foreign key error timestamp'
);
like(
   $fke->[0]->[1],  # Error
   qr/INSERT INTO child VALUES \(1, 9\)/,
   'Saved foreign key error'
);

# Check again to make sure that the same fke isn't saved twice.
my $first_ts = $fke->[0]->[0];
output(sub { pt_fk_error_logger::main('h=127.1,P=12345,u=msandbox,p=msandbox', '--dest', 'h=127.1,P=12345,D=test,t=foreign_key_errors'); } );
sleep 0.1;
$fke = $dbh->selectall_arrayref('SELECT * FROM test.foreign_key_errors');
is(
   $fke->[0]->[0],  # Timestamp
   $first_ts,
   "Doesn't save same error twice",
);
is(
   scalar @$fke,
   1,
   "Still only 1 saved error"
);

# Make another fk error which should be saved.
sleep 1;
$dbh->do('USE test');
$dbh->do('INSERT INTO child VALUES (1, 2)');
eval {
   $dbh->do('DELETE FROM parent WHERE id = 2');  # Causes foreign key error.
};
output( sub { pt_fk_error_logger::main('h=127.1,P=12345,u=msandbox,p=msandbox', '--dest', 'h=127.1,P=12345,D=test,t=foreign_key_errors'); } );
sleep 0.1;
$fke = $dbh->selectall_arrayref('SELECT * FROM test.foreign_key_errors');
like(
   $fke->[1]->[1],  # Error
   qr/DELETE FROM parent WHERE id = 2/,
   'Second foreign key error'
);
is(
   scalar @$fke,
   2,
   "Now 2 saved errors"
);

# ##########################################################################
# Test printing the errors.
# ##########################################################################
$dbh->do('USE test');
eval {
   $dbh->do('DELETE FROM parent WHERE id = 2');  # Causes foreign key error.
};
$output = output(sub { pt_fk_error_logger::main('h=127.1,P=12345,u=msandbox,p=msandbox'); });
like(
   $output,
   qr/DELETE FROM parent WHERE id = 2/,
   'Print foreign key error'
);

# Drop these manually because $sb->wipe_clean() may not do them in the
# correct order causing a foreign key error that the next run of this
# test will see.
$dbh->do('DROP TABLE test.child');
$dbh->do('DROP TABLE test.parent');

# #############################################################################
# Done.
# #############################################################################
$sb->wipe_clean($dbh);
exit;