#!/usr/bin/perl

use strict;
use warnings;

use Test::More;
use Test::Exception;
use Test::SQL::Translator qw(maybe_plan);
use SQL::Translator::Schema::Constants;
use Data::Dumper;
use FindBin qw/$Bin/;

# Testing 1,2,3,4...
#=============================================================================

BEGIN {
    maybe_plan(51,
        'SQL::Translator::Producer::PostgreSQL',
        'Test::Differences',
    )
}
use Test::Differences;
use SQL::Translator;

my $PRODUCER = \&SQL::Translator::Producer::PostgreSQL::create_field;

my $table = SQL::Translator::Schema::Table->new( name => 'mytable');

my $field1 = SQL::Translator::Schema::Field->new( name => 'myfield',
                                                  table => $table,
                                                  data_type => 'VARCHAR',
                                                  size => 10,
                                                  default_value => undef,
                                                  is_auto_increment => 0,
                                                  is_nullable => 1,
                                                  is_foreign_key => 0,
                                                  is_unique => 0 );

my $field1_sql = SQL::Translator::Producer::PostgreSQL::create_field($field1);

is($field1_sql, 'myfield character varying(10)', 'Create field works');

my $field_array = SQL::Translator::Schema::Field->new( name => 'myfield',
                                                  table => $table,
                                                  data_type => 'character varying[]',
                                                  size => 10,
                                                  default_value => undef,
                                                  is_auto_increment => 0,
                                                  is_nullable => 1,
                                                  is_foreign_key => 0,
                                                  is_unique => 0 );

my $field_array_sql = SQL::Translator::Producer::PostgreSQL::create_field($field_array);

is($field_array_sql, 'myfield character varying(10)[]', 'Create field works');

my $field2 = SQL::Translator::Schema::Field->new( name      => 'myfield',
                                                  table => $table,
                                                  data_type => 'VARCHAR',
                                                  size      => 25,
                                                  default_value => undef,
                                                  is_auto_increment => 0,
                                                  is_nullable => 0,
                                                  is_foreign_key => 0,
                                                  is_unique => 0 );

my $pk_constraint = SQL::Translator::Schema::Constraint->new(
    table => $table,
    name   => 'foo',
    fields => [qw(myfield)],
    type   => 'PRIMARY_KEY',
);

my  ($pk_constraint_def_ref, $pk_constraint_fk_ref ) = SQL::Translator::Producer::PostgreSQL::create_constraint($pk_constraint);
ok(@{$pk_constraint_def_ref} == 1 && @{$pk_constraint_fk_ref} == 0,  'precheck of create_Primary Key constraint');
is($pk_constraint_def_ref->[0], 'CONSTRAINT foo PRIMARY KEY (myfield)', 'Create Primary Key Constraint works');

my $alter_pk_constraint = SQL::Translator::Producer::PostgreSQL::alter_drop_constraint($pk_constraint);
is($alter_pk_constraint, 'ALTER TABLE mytable DROP CONSTRAINT foo', 'Alter drop Primary Key constraint works');

my $table2 = SQL::Translator::Schema::Table->new( name => 'mytable2');

my $field1_2 = SQL::Translator::Schema::Field->new( name => 'myfield_2',
                                                  table => $table,
                                                  data_type => 'VARCHAR',
                                                  size => 10,
                                                  default_value => undef,
                                                  is_auto_increment => 0,
                                                  is_nullable => 1,
                                                  is_foreign_key => 0,
                                                  is_unique => 0 );

# check named, and unnamed foreign keys
for my $name ( 'foo', undef ) {
    my $fk_constraint = SQL::Translator::Schema::Constraint->new(
        table => $table,
        name   => $name,
        fields => [qw(myfield)],
        type   => 'FOREIGN_KEY',
        reference_table => $table2,
        reference_fields => [qw(myfield_2)],
    );
    my $fk_constraint_2 = SQL::Translator::Schema::Constraint->new(
        table => $table,
        name   => $name,
        fields => [qw(myfield)],
        type   => 'FOREIGN_KEY',
        reference_table => $table2,
        reference_fields => [qw(myfield_2)],
    );

    my  ($fk_constraint_def_ref, $fk_constraint_fk_ref ) = SQL::Translator::Producer::PostgreSQL::create_constraint($fk_constraint);

    ok(@{$fk_constraint_def_ref} == 0 && @{$fk_constraint_fk_ref} == 1,  'precheck of create_Foreign Key constraint');

    if ( $name ) {
        is($fk_constraint_fk_ref->[0], "ALTER TABLE mytable ADD CONSTRAINT $name FOREIGN KEY (myfield)
  REFERENCES mytable2 (myfield_2) DEFERRABLE", 'Create Foreign Key Constraint works');

        # ToDo: may we should check if the constraint name was valid, or if next
        #       unused_name created has choosen a different one
        my $alter_fk_constraint = SQL::Translator::Producer::PostgreSQL::alter_drop_constraint($fk_constraint);
        is($alter_fk_constraint, "ALTER TABLE mytable DROP CONSTRAINT $name", 'Alter drop Foreign Key constraint works');
    }
    else {
        is($fk_constraint_fk_ref->[0], 'ALTER TABLE mytable ADD FOREIGN KEY (myfield)
  REFERENCES mytable2 (myfield_2) DEFERRABLE', 'Create named Foreign Key Constraint works');

        my $alter_fk_constraint = SQL::Translator::Producer::PostgreSQL::alter_drop_constraint($fk_constraint);
        is($alter_fk_constraint, 'ALTER TABLE mytable DROP CONSTRAINT mytable_myfield_fkey', 'Alter drop named Foreign Key constraint works');
    }
}


my $alter_field = SQL::Translator::Producer::PostgreSQL::alter_field($field1,
                                                                $field2);
is($alter_field, qq[ALTER TABLE mytable ALTER COLUMN myfield SET NOT NULL;
ALTER TABLE mytable ALTER COLUMN myfield TYPE character varying(25)],
 'Alter field works');

my $field1_complex = SQL::Translator::Schema::Field->new(
    name => 'my_complex_field',
    table => $table,
    data_type => 'VARCHAR',
    size => 10,
    default_value => undef,
                                                  is_auto_increment => 0,
    is_nullable => 1,
    is_foreign_key => 0,
    is_unique => 0
);

my $field2_complex = SQL::Translator::Schema::Field->new(
    name      => 'my_altered_field',
    table => $table,
    data_type => 'VARCHAR',
    size      => 60,
    default_value => 'whatever',
    is_auto_increment => 0,
    is_nullable => 1,
    is_foreign_key => 0,
    is_unique => 0
);

my $alter_field_complex = SQL::Translator::Producer::PostgreSQL::alter_field($field1_complex, $field2_complex);
is(
    $alter_field_complex,
    q{ALTER TABLE mytable RENAME COLUMN my_complex_field TO my_altered_field;
ALTER TABLE mytable ALTER COLUMN my_altered_field TYPE character varying(60);
ALTER TABLE mytable ALTER COLUMN my_altered_field SET DEFAULT 'whatever'},
    'Complex Alter field works'
);

$field1->name('field3');
my $add_field = SQL::Translator::Producer::PostgreSQL::add_field($field1);

is($add_field, 'ALTER TABLE mytable ADD COLUMN field3 character varying(10)', 'Add field works');

my $drop_field = SQL::Translator::Producer::PostgreSQL::drop_field($field2);
is($drop_field, 'ALTER TABLE mytable DROP COLUMN myfield', 'Drop field works');

my $field3 = SQL::Translator::Schema::Field->new( name      => 'time_field',
                                                  table => $table,
                                                  data_type => 'TIME',
                                                  default_value => undef,
                                                  is_auto_increment => 0,
                                                  is_nullable => 0,
                                                  is_foreign_key => 0,
                                                  is_unique => 0 );

my $field3_sql = SQL::Translator::Producer::PostgreSQL::create_field($field3);

is($field3_sql, 'time_field time NOT NULL', 'Create time field works');

my $field3_datetime_with_TZ = SQL::Translator::Schema::Field->new(
    name      => 'datetime_with_TZ',
    table     => $table,
    data_type => 'timestamp with time zone',
    size      => 7,
);

my $field3_datetime_with_TZ_sql =
    SQL::Translator::Producer::PostgreSQL::create_field(
        $field3_datetime_with_TZ
    );

is(
    $field3_datetime_with_TZ_sql,
    'datetime_with_TZ timestamp(6) with time zone',
    'Create time field with time zone and size, works'
);

my $field3_time_without_TZ = SQL::Translator::Schema::Field->new(
    name      => 'time_without_TZ',
    table     => $table,
    data_type => 'time without time zone',
    size      => 2,
);

my $field3_time_without_TZ_sql
    = SQL::Translator::Producer::PostgreSQL::create_field(
        $field3_time_without_TZ
    );

is(
    $field3_time_without_TZ_sql,
    'time_without_TZ time(2) without time zone',
    'Create time field without time zone but with size, works'
);

my $field_num = SQL::Translator::Schema::Field->new( name => 'num',
                                                  table => $table,
                                                  data_type => 'numeric',
                                                  size => [10,2],
                                                  );
my $fieldnum_sql = SQL::Translator::Producer::PostgreSQL::create_field($field_num);

is($fieldnum_sql, 'num numeric(10,2)', 'Create numeric field works');


my $field4 = SQL::Translator::Schema::Field->new( name      => 'bytea_field',
                                                  table => $table,
                                                  data_type => 'bytea',
                                                  size => '16777215',
                                                  default_value => undef,
                                                  is_auto_increment => 0,
                                                  is_nullable => 0,
                                                  is_foreign_key => 0,
                                                  is_unique => 0 );

my $field4_sql = SQL::Translator::Producer::PostgreSQL::create_field($field4);

is($field4_sql, 'bytea_field bytea NOT NULL', 'Create bytea field works');

my $field5 = SQL::Translator::Schema::Field->new( name => 'enum_field',
                                                   table => $table,
                                                   data_type => 'enum',
                                                   extra => { list => [ 'Foo', 'Bar' ] },
                                                   is_auto_increment => 0,
                                                   is_nullable => 0,
                                                   is_foreign_key => 0,
                                                   is_unique => 0 );

my $field5_sql = SQL::Translator::Producer::PostgreSQL::create_field($field5,{ postgres_version => 8.3 });

is($field5_sql, 'enum_field mytable_enum_field_type NOT NULL', 'Create real enum field works');




my $field6 = SQL::Translator::Schema::Field->new(
                                                  name      => 'character',
                                                  table => $table,
                                                  data_type => 'character',
                                                  size => '123',
                                                  default_value => 'foobar',
                                                    is_auto_increment => 0,
                                                    is_nullable => 0,
                                                    is_foreign_key => 0,
                                                    is_unique => 0);

my $field7 = SQL::Translator::Schema::Field->new(
                                name      => 'character',
                                table => $table,
                                data_type => 'character',
                                size => '123',
                                default_value => undef,
                                  is_auto_increment => 0,
                                  is_nullable => 0,
                                  is_foreign_key => 0,
                                  is_unique => 0);

$alter_field = SQL::Translator::Producer::PostgreSQL::alter_field($field6,
                                                                $field7);

is($alter_field, q(ALTER TABLE mytable ALTER COLUMN character DROP DEFAULT), 'DROP DEFAULT');

$field7->default_value(q(foo'bar'));

$alter_field = SQL::Translator::Producer::PostgreSQL::alter_field($field6,
                                                                $field7);

is($alter_field, q(ALTER TABLE mytable ALTER COLUMN character SET DEFAULT 'foo''bar'''), 'DEFAULT with escaping');

$field7->default_value(\q(foobar));

$alter_field = SQL::Translator::Producer::PostgreSQL::alter_field($field6,
                                                                $field7);

is($alter_field, q(ALTER TABLE mytable ALTER COLUMN character SET DEFAULT foobar), 'DEFAULT unescaped if scalarref');

$field7->is_nullable(1);
$field7->default_value(q(foobar));

$alter_field = SQL::Translator::Producer::PostgreSQL::alter_field($field6,
                                                                $field7);

is($alter_field, q(ALTER TABLE mytable ALTER COLUMN character DROP NOT NULL), 'DROP NOT NULL');

my $field8 = SQL::Translator::Schema::Field->new( name => 'ts_field',
                                                   table => $table,
                                                   data_type => 'timestamp with time zone',
                                                   size => 6,
                                                   is_auto_increment => 0,
                                                   is_nullable => 0,
                                                   is_foreign_key => 0,
                                                   is_unique => 0 );

my $field8_sql = SQL::Translator::Producer::PostgreSQL::create_field($field8,{ postgres_version => 8.3 });

is($field8_sql, 'ts_field timestamp(6) with time zone NOT NULL', 'timestamp with precision');

my $field9 = SQL::Translator::Schema::Field->new( name => 'time_field',
                                                   table => $table,
                                                   data_type => 'time with time zone',
                                                   size => 6,
                                                   is_auto_increment => 0,
                                                   is_nullable => 0,
                                                   is_foreign_key => 0,
                                                   is_unique => 0 );

my $field9_sql = SQL::Translator::Producer::PostgreSQL::create_field($field9,{ postgres_version => 8.3 });

is($field9_sql, 'time_field time(6) with time zone NOT NULL', 'time with precision');

my $field10 = SQL::Translator::Schema::Field->new( name => 'interval_field',
                                                   table => $table,
                                                   data_type => 'interval',
                                                   size => 6,
                                                   is_auto_increment => 0,
                                                   is_nullable => 0,
                                                   is_foreign_key => 0,
                                                   is_unique => 0 );

my $field10_sql = SQL::Translator::Producer::PostgreSQL::create_field($field10,{ postgres_version => 8.3 });

is($field10_sql, 'interval_field interval(6) NOT NULL', 'time with precision');


my $field11 = SQL::Translator::Schema::Field->new( name => 'time_field',
                                                   table => $table,
                                                   data_type => 'time without time zone',
                                                   size => 6,
                                                   is_auto_increment => 0,
                                                   is_nullable => 0,
                                                   is_foreign_key => 0,
                                                   is_unique => 0 );

my $field11_sql = SQL::Translator::Producer::PostgreSQL::create_field($field11,{ postgres_version => 8.3 });

is($field11_sql, 'time_field time(6) without time zone NOT NULL', 'time with precision');



my $field12 = SQL::Translator::Schema::Field->new( name => 'time_field',
                                                   table => $table,
                                                   data_type => 'timestamp',
                                                   is_auto_increment => 0,
                                                   is_nullable => 0,
                                                   is_foreign_key => 0,
                                                   is_unique => 0 );

my $field12_sql = SQL::Translator::Producer::PostgreSQL::create_field($field12,{ postgres_version => 8.3 });

is($field12_sql, 'time_field timestamp NOT NULL', 'time with precision');

my $field13 = SQL::Translator::Schema::Field->new( name => 'enum_field_with_type_name',
                                                   table => $table,
                                                   data_type => 'enum',
                                                   extra => { list => [ 'Foo', 'Bar' ],
                                                              custom_type_name => 'real_enum_type' },
                                                   is_auto_increment => 0,
                                                   is_nullable => 0,
                                                   is_foreign_key => 0,
                                                   is_unique => 0 );

my $field13_sql = SQL::Translator::Producer::PostgreSQL::create_field($field13,{ postgres_version => 8.3 });

is($field13_sql, 'enum_field_with_type_name real_enum_type NOT NULL', 'Create real enum field works');


{
    # let's test default values! -- rjbs, 2008-09-30
    my %field = (
        table => $table,
        data_type => 'VARCHAR',
        size => 10,
        is_auto_increment => 0,
        is_nullable => 1,
        is_foreign_key => 0,
        is_unique => 0,
    );

    {
        my $simple_default = SQL::Translator::Schema::Field->new(
            %field,
            name => 'str_default',
            default_value => 'foo',
        );

        is(
            $PRODUCER->($simple_default),
            q{str_default character varying(10) DEFAULT 'foo'},
            'default str',
        );
    }

    {
        my $null_default = SQL::Translator::Schema::Field->new(
            %field,
            name => 'null_default',
            default_value => \'NULL',
        );

        is(
            $PRODUCER->($null_default),
            q{null_default character varying(10) DEFAULT NULL},
            'default null',
        );
    }

    {
        my $null_default = SQL::Translator::Schema::Field->new(
            %field,
            name => 'null_default_2',
            default_value => 'NULL', # XXX: this should go away
        );

        is(
            $PRODUCER->($null_default),
            q{null_default_2 character varying(10) DEFAULT NULL},
            'default null from special cased string',
        );
    }

    {
        my $func_default = SQL::Translator::Schema::Field->new(
            %field,
            name => 'func_default',
            default_value => \'func(funky)',
        );

        is(
            $PRODUCER->($func_default),
            q{func_default character varying(10) DEFAULT func(funky)},
            'unquoted default from scalar ref',
        );
    }
}


my $view1 = SQL::Translator::Schema::View->new(
    name   => 'view_foo',
    fields => [qw/id name/],
    sql    => 'SELECT id, name FROM thing',
);
my $create_opts = { add_replace_view => 1, no_comments => 1 };
my $view1_sql1 = SQL::Translator::Producer::PostgreSQL::create_view($view1, $create_opts);

my $view_sql_replace = "CREATE VIEW view_foo ( id, name ) AS
    SELECT id, name FROM thing
";
is($view1_sql1, $view_sql_replace, 'correct "CREATE OR REPLACE VIEW" SQL');

my $view2 = SQL::Translator::Schema::View->new(
    name   => 'view_foo2',
    sql    => 'SELECT id, name FROM thing',
    extra  => {
      'temporary'    => '1',
      'check_option' => 'cascaded',
    },
);
my $create2_opts = { add_replace_view => 1, no_comments => 1 };
my $view2_sql1 = SQL::Translator::Producer::PostgreSQL::create_view($view2, $create2_opts);

my $view2_sql_replace = "CREATE TEMPORARY VIEW view_foo2 AS
    SELECT id, name FROM thing
 WITH CASCADED CHECK OPTION";
is($view2_sql1, $view2_sql_replace, 'correct "CREATE OR REPLACE VIEW" SQL 2');

{
    my $table = SQL::Translator::Schema::Table->new( name => 'foobar', fields => [qw( foo  bar )] );
    my $quote = { quote_table_names => '"', quote_field_names => '"' };

    {
        my $index = $table->add_index(name => 'myindex', fields => ['foo']);
        my ($def) = SQL::Translator::Producer::PostgreSQL::create_index($index);
        is($def, "CREATE INDEX myindex on foobar (foo)", 'index created');
        ($def) = SQL::Translator::Producer::PostgreSQL::create_index($index, $quote);
        is($def, 'CREATE INDEX "myindex" on "foobar" ("foo")', 'index created w/ quotes');
    }

    {
        my $index = $table->add_index(name => 'myindex', fields => ['lower(foo)']);
        my ($def) = SQL::Translator::Producer::PostgreSQL::create_index($index);
        is($def, "CREATE INDEX myindex on foobar (lower(foo))", 'index created');
        ($def) = SQL::Translator::Producer::PostgreSQL::create_index($index, $quote);
        is($def, 'CREATE INDEX "myindex" on "foobar" (lower(foo))', 'index created w/ quotes');
    }

    {
        my $index = $table->add_index(name => 'myindex', fields => ['bar', 'lower(foo)']);
        my ($def) = SQL::Translator::Producer::PostgreSQL::create_index($index);
        is($def, "CREATE INDEX myindex on foobar (bar, lower(foo))", 'index created');
        ($def) = SQL::Translator::Producer::PostgreSQL::create_index($index, $quote);
        is($def, 'CREATE INDEX "myindex" on "foobar" ("bar", lower(foo))', 'index created w/ quotes');
    }

    {
        my $constr = $table->add_constraint(name => 'constr', type => UNIQUE, fields => ['foo']);
        my ($def) = SQL::Translator::Producer::PostgreSQL::create_constraint($constr);
        is($def->[0], 'CONSTRAINT constr UNIQUE (foo)', 'constraint created');
        ($def) = SQL::Translator::Producer::PostgreSQL::create_constraint($constr, $quote);
        is($def->[0], 'CONSTRAINT "constr" UNIQUE ("foo")', 'constraint created w/ quotes');
    }

    {
        my $constr = $table->add_constraint(name => 'constr', type => UNIQUE, fields => ['lower(foo)']);
        my ($def) = SQL::Translator::Producer::PostgreSQL::create_constraint($constr);
        is($def->[0], 'CONSTRAINT constr UNIQUE (lower(foo))', 'constraint created');
        ($def) = SQL::Translator::Producer::PostgreSQL::create_constraint($constr, $quote);
        is($def->[0], 'CONSTRAINT "constr" UNIQUE (lower(foo))', 'constraint created w/ quotes');
    }

    {
        my $constr = $table->add_constraint(name => 'constr', type => UNIQUE, fields => ['bar', 'lower(foo)']);
        my ($def) = SQL::Translator::Producer::PostgreSQL::create_constraint($constr);
        is($def->[0], 'CONSTRAINT constr UNIQUE (bar, lower(foo))', 'constraint created');
        ($def) = SQL::Translator::Producer::PostgreSQL::create_constraint($constr, $quote);
        is($def->[0], 'CONSTRAINT "constr" UNIQUE ("bar", lower(foo))', 'constraint created w/ quotes');
    }
}

my $drop_view_opts1 = { add_drop_view => 1, no_comments => 1, postgres_version => 8.001 };
my $drop_view_8_1_produced = SQL::Translator::Producer::PostgreSQL::create_view($view1, $drop_view_opts1);

my $drop_view_8_1_expected = "DROP VIEW view_foo;
CREATE VIEW view_foo ( id, name ) AS
    SELECT id, name FROM thing
";

is($drop_view_8_1_produced, $drop_view_8_1_expected, "My DROP VIEW statement for 8.1 is correct");

my $drop_view_opts2 = { add_drop_view => 1, no_comments => 1, postgres_version => 9.001 };
my $drop_view_9_1_produced = SQL::Translator::Producer::PostgreSQL::create_view($view1, $drop_view_opts2);

my $drop_view_9_1_expected = "DROP VIEW IF EXISTS view_foo;
CREATE VIEW view_foo ( id, name ) AS
    SELECT id, name FROM thing
";

is($drop_view_9_1_produced, $drop_view_9_1_expected, "My DROP VIEW statement for 9.1 is correct");