#!/usr/bin/perl
# vim: set ft=perl:
use strict;
use warnings;
use SQL::Translator;
use File::Spec::Functions qw(catfile updir tmpdir);
use FindBin               qw($Bin);
use Test::More;
use Test::Differences;
use Test::SQL::Translator qw(maybe_plan);
use SQL::Translator::Schema::Constants;
use Storable 'dclone';
plan tests => 4;
use_ok('SQL::Translator::Diff') or die "Cannot continue\n";
my $tr = SQL::Translator->new;
my ($source_schema, $target_schema) = map {
  my $t = SQL::Translator->new;
  $t->parser('YAML')
      or die $tr->error;
  my $out = $t->translate(catfile($Bin, qw/data diff pgsql/, $_))
      or die $tr->error;
  my $schema = $t->schema;
  unless ($schema->name) {
    $schema->name($_);
  }
  ($schema);
} (qw( create1.yml create2.yml ));
# Test for differences
my $out = SQL::Translator::Diff::schema_diff(
  $source_schema,
  'PostgreSQL',
  $target_schema,
  'PostgreSQL',
  {
    sqlt_args => {
      quote_identifiers => 1,
    }
  }
);
eq_or_diff($out, <<'## END OF DIFF', "Diff as expected");
-- Convert schema 'create1.yml' to 'create2.yml':;
BEGIN;
CREATE TABLE "added" (
  "id" bigint
);
ALTER TABLE "employee" DROP CONSTRAINT "FK5302D47D93FE702E";
ALTER TABLE "employee" DROP COLUMN "job_title";
ALTER TABLE "employee" ADD CONSTRAINT "FK5302D47D93FE702E_diff" FOREIGN KEY ("employee_id")
  REFERENCES "person" ("person_id") DEFERRABLE;
ALTER TABLE "old_name" RENAME TO "new_name";
ALTER TABLE "new_name" ADD COLUMN "new_field" integer;
ALTER TABLE "person" DROP CONSTRAINT "UC_age_name";
DROP INDEX "u_name";
ALTER TABLE "person" ADD COLUMN "is_rock_star" smallint DEFAULT 1;
ALTER TABLE "person" ALTER COLUMN "person_id" TYPE serial;
ALTER TABLE "person" ALTER COLUMN "name" SET NOT NULL;
ALTER TABLE "person" ALTER COLUMN "age" SET DEFAULT 18;
ALTER TABLE "person" ALTER COLUMN "weight" DROP NOT NULL;
ALTER TABLE "person" ALTER COLUMN "iq" TYPE bigint;
ALTER TABLE "person" ALTER COLUMN "nickname" SET NOT NULL;
ALTER TABLE "person" ALTER COLUMN "nickname" TYPE character varying(24);
ALTER TABLE "person" RENAME COLUMN "description" TO "physical_description";
ALTER TABLE "person" ADD CONSTRAINT "unique_name" UNIQUE ("name");
ALTER TABLE "person" ADD CONSTRAINT "UC_person_id" UNIQUE ("person_id");
ALTER TABLE "person" ADD CONSTRAINT "UC_age_name" UNIQUE ("age", "name");
DROP TABLE "deleted" CASCADE;
COMMIT;
## END OF DIFF
$out = SQL::Translator::Diff::schema_diff(
  $source_schema,
  'PostgreSQL',
  $target_schema,
  'PostgreSQL',
  {
    ignore_index_names      => 1,
    ignore_constraint_names => 1,
    sqlt_args               => {
      quote_identifiers => 0,
    }
  }
);
eq_or_diff($out, <<'## END OF DIFF', "Diff as expected");
-- Convert schema 'create1.yml' to 'create2.yml':;
BEGIN;
CREATE TABLE added (
  id bigint
);
ALTER TABLE employee DROP COLUMN job_title;
ALTER TABLE old_name RENAME TO new_name;
ALTER TABLE new_name ADD COLUMN new_field integer;
ALTER TABLE person DROP CONSTRAINT UC_age_name;
ALTER TABLE person ADD COLUMN is_rock_star smallint DEFAULT 1;
ALTER TABLE person ALTER COLUMN person_id TYPE serial;
ALTER TABLE person ALTER COLUMN name SET NOT NULL;
ALTER TABLE person ALTER COLUMN age SET DEFAULT 18;
ALTER TABLE person ALTER COLUMN weight DROP NOT NULL;
ALTER TABLE person ALTER COLUMN iq TYPE bigint;
ALTER TABLE person ALTER COLUMN nickname SET NOT NULL;
ALTER TABLE person ALTER COLUMN nickname TYPE character varying(24);
ALTER TABLE person RENAME COLUMN description TO physical_description;
ALTER TABLE person ADD CONSTRAINT UC_person_id UNIQUE (person_id);
ALTER TABLE person ADD CONSTRAINT UC_age_name UNIQUE (age, name);
DROP TABLE deleted CASCADE;
COMMIT;
## END OF DIFF
# Test for sameness
$out = SQL::Translator::Diff::schema_diff($source_schema, 'PostgreSQL', $source_schema, 'PostgreSQL');
eq_or_diff($out, <<'## END OF DIFF', "No differences found");
-- Convert schema 'create1.yml' to 'create1.yml':;
-- No differences found;
## END OF DIFF