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package SL::DB;

use strict;

use Carp;
use Data::Dumper;
use SL::DBConnect;
use English qw(-no_match_vars);
use Rose::DB;
use Rose::DBx::Cache::Anywhere;

use base qw(Rose::DB);

__PACKAGE__->db_cache_class('Rose::DBx::Cache::Anywhere');
__PACKAGE__->use_private_registry;

my (%_db_registered, %_initial_sql_executed);

sub dbi_connect {
shift;

return SL::DBConnect->connect(@_);
}

sub create {
my $domain = shift || SL::DB->default_domain;
my $type = shift || SL::DB->default_type;

($domain, $type) = _register_db($domain, $type);

my $db = __PACKAGE__->new_or_cached(domain => $domain, type => $type);

_execute_initial_sql($db);

return $db;
}

my %_dateformats = ( 'yy-mm-dd' => 'ISO',
'yyyy-mm-dd' => 'ISO',
'mm/dd/yy' => 'SQL, US',
'dd/mm/yy' => 'SQL, EUROPEAN',
'dd.mm.yy' => 'GERMAN'
);

sub _register_db {
my $domain = shift;
my $type = shift;

my %connect_settings;
my $initial_sql;

if (!%::myconfig) {
$type = 'LXOFFICE_EMPTY';
%connect_settings = ( driver => 'Pg' );

} elsif ($type eq 'LXOFFICE_AUTH') {
%connect_settings = ( driver => $::myconfig{dbdriver} || 'Pg',
database => $::auth->{DB_config}->{db},
host => $::auth->{DB_config}->{host} || 'localhost',
port => $::auth->{DB_config}->{port} || 5432,
username => $::auth->{DB_config}->{user},
password => $::auth->{DB_config}->{password},
connect_options => { pg_enable_utf8 => $::locale && $::locale->is_utf8,
});
} else {
my $european_dates = 0;
if ($::myconfig{dateformat}) {
$european_dates = 1 if $_dateformats{ $::myconfig{dateformat} }
&& $_dateformats{ $::myconfig{dateformat} } =~ m/european/i;
}

%connect_settings = ( driver => $::myconfig{dbdriver} || 'Pg',
database => $::myconfig{dbname},
host => $::myconfig{dbhost} || 'localhost',
port => $::myconfig{dbport} || 5432,
username => $::myconfig{dbuser},
password => $::myconfig{dbpasswd},
connect_options => { pg_enable_utf8 => $::locale && $::locale->is_utf8,
},
european_dates => $european_dates);
}

my %flattened_settings = _flatten_settings(%connect_settings);

$domain = 'LXOFFICE' if $type =~ m/^LXOFFICE/;
$type .= join($SUBSCRIPT_SEPARATOR, map { ($_, $flattened_settings{$_} || '') } sort keys %flattened_settings);
my $idx = "${domain}::${type}";

if (!$_db_registered{$idx}) {
$_db_registered{$idx} = 1;

__PACKAGE__->register_db(domain => $domain,
type => $type,
%connect_settings,
);
}

return ($domain, $type);
}

sub _execute_initial_sql {
my ($db) = @_;

return if $_initial_sql_executed{$db} || !%::myconfig || !$::myconfig{dateformat};

$_initial_sql_executed{$db} = 1;

# Don't rely on dboptions being set properly. Chose them from
# dateformat instead.
my $pg_dateformat = $_dateformats{ $::myconfig{dateformat} };
$db->dbh->do("set DateStyle to '${pg_dateformat}'") if $pg_dateformat;
}

sub _flatten_settings {
my %settings = @_;
my %flattened = ();

while (my ($key, $value) = each %settings) {
if ('HASH' eq ref $value) {
%flattened = ( %flattened, _flatten_settings(%{ $value }) );
} else {
$flattened{$key} = $value;
}
}

return %flattened;
}

1;
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