package Dancer::Plugin::Teng;

BEGIN {
	$Dancer::Plugin::Teng::VERSION = '0.1';
}

use strict;
use warnings;
use Dancer::Plugin;
use DBI;
use Teng;
use Teng::Schema::Loader;

my $schemas = {};

register teng => sub {
	my $name = shift;
	my $cfg  = plugin_setting;

	if (not defined $name) {
		($name) = keys %$cfg or die "No schemas are configured";
	}

	if ($schemas->{$name}) {
		my $dbh = $schemas->{$name}->dbh;
		if (!$dbh->ping) {
			$dbh->disconnect;
			delete $schemas->{$name};
		} else {
			return $schemas->{$name};
		}
	}
	#return $schemas->{$name} if $schemas->{$name};

	my $options = $cfg->{$name} or die "The schema $name is not configured";

	my @conn_info = $options->{connect_info}
		? @{$options->{connect_info}}
		: @$options{qw(dsn user pass options)};

	# pckg should be deprecated
	my $schema_class = $options->{schema_class} || $options->{pckg};

	if ($schema_class) {
		$schema_class =~ s/-/::/g;
		eval "use $schema_class";
		if ( my $err = $@ ) {
			die "error while loading $schema_class : $err";
		}
		$schemas->{$name} = $schema_class->connect({
			connect_info  => \@conn_info,
			on_connect_do => $options->{on_connect_do},
		});
	} else {
		my $dbh = DBI->connect(@conn_info);
		my $schema = Teng::Schema::Loader->load(
			dbh       => $dbh,
			namespace => 'MyAPP::DB',
		);
		$schemas->{$name} = Teng->new(
			connect_info  => \@conn_info,
			on_connect_do => $options->{on_connect_do},
			schema        => $schema,
		);
	}

	return $schemas->{$name};
};

register_plugin;

1;

__END__

plugins:
  Teng:
    conn1:
      dsn:  dbi:mysql:database=db1;host=localhost
      user: root
      pass:
      options:
        RaiseError: 1
        PrintError: 0
        AutoCommit: 1
      on_connect_do: ["SET NAMES utf8"]
    conn2:
      dsn:  dbi:mysql:database=db2;host=localhost
      user: root
      pass:
      options:
        RaiseError: 1
        PrintError: 0
        AutoCommit: 1
      on_connect_do: ["SET NAMES utf8"]