/*global describe, expect, it*/

'use strict';

var MySQL_Client  = require('../../../lib/dialects/mysql');
var Maria_Client  = require('../../../lib/dialects/maria');
var MySQL2_Client = require('../../../lib/dialects/mysql2');

module.exports = function(dialect) {

describe(dialect + " SchemaBuilder", function() {

  var client;
  switch(dialect) {
    case 'mysql': client = new MySQL_Client(); break;
    case 'mysql2': client = new MySQL2_Client(); break;
    case 'maria': client = new Maria_Client(); break;
  }

  var tableSql;
  var equal = require('assert').equal;

  it('basic create table with column collate', function() {
    tableSql = client.schemaBuilder().createTable('users', function (table) {
      table.increments('id');
      table.string('email').collate('utf8_unicode_ci');
    }).toSQL();

    equal(1, tableSql.length);
    expect(tableSql[0].sql).to.equal('create table `users` (`id` int unsigned not null auto_increment primary key, `email` varchar(255) collate \'utf8_unicode_ci\')');
  });

  it('test basic create table with charset and collate', function() {
    tableSql = client.schemaBuilder().createTable('users', function(table) {
      table.increments('id');
      table.string('email');
      table.charset('utf8');
      table.collate('utf8_unicode_ci');
    });

    equal(1, tableSql.toSQL().length);
    expect(tableSql.toSQL()[0].sql).to.equal('create table `users` (`id` int unsigned not null auto_increment primary key, `email` varchar(255)) default character set utf8 collate utf8_unicode_ci');
    expect(tableSql.toQuery()).to.equal('create table `users` (`id` int unsigned not null auto_increment primary key, `email` varchar(255)) default character set utf8 collate utf8_unicode_ci');
  });

  it('basic create table without charset or collate', function() {
    tableSql = client.schemaBuilder().table('users', function() {
      this.increments('id');
      this.string('email');
    }).toSQL();

    equal(1, tableSql.length);
    expect(tableSql[0].sql).to.equal('alter table `users` add `id` int unsigned not null auto_increment primary key, add `email` varchar(255)');
  });

  it('test drop table', function() {
    tableSql = client.schemaBuilder().dropTable('users').toSQL();

    equal(1, tableSql.length);
    expect(tableSql[0].sql).to.equal('drop table `users`');
  });

  it('test drop table if exists', function() {
    tableSql = client.schemaBuilder().dropTableIfExists('users').toSQL();

    equal(1, tableSql.length);
    expect(tableSql[0].sql).to.equal('drop table if exists `users`');
  });

  it('test drop column', function() {
    tableSql = client.schemaBuilder().table('users', function() {
      this.dropColumn('foo');
    }).toSQL();

    equal(1, tableSql.length);
    expect(tableSql[0].sql).to.equal('alter table `users` drop `foo`');
  });

  it('drops multiple columns with an array', function() {
    tableSql = client.schemaBuilder().table('users', function() {
      this.dropColumn(['foo', 'bar']);
    }).toSQL();

    equal(1, tableSql.length);
    expect(tableSql[0].sql).to.equal('alter table `users` drop `foo`, drop `bar`');
  });

  it('drops multiple columns as multiple arguments', function() {
    tableSql = client.schemaBuilder().table('users', function() {
      this.dropColumn('foo', 'bar');
    }).toSQL();

    equal(1, tableSql.length);
    expect(tableSql[0].sql).to.equal('alter table `users` drop `foo`, drop `bar`');
  });

  it('test drop primary', function() {
    tableSql = client.schemaBuilder().table('users', function() {
      this.dropPrimary();
    }).toSQL();

    equal(1, tableSql.length);
    expect(tableSql[0].sql).to.equal('alter table `users` drop primary key');
  });

  it('test drop unique', function() {
    tableSql = client.schemaBuilder().table('users', function() {
      this.dropUnique('foo');
    }).toSQL();

    equal(1, tableSql.length);
    expect(tableSql[0].sql).to.equal('alter table `users` drop index `users_foo_unique`');
  });

  it('test drop unique, custom', function() {
    tableSql = client.schemaBuilder().table('users', function() {
      this.dropUnique(null, 'foo');
    }).toSQL();

    equal(1, tableSql.length);
    expect(tableSql[0].sql).to.equal('alter table `users` drop index `foo`');
  });

  it('test drop index', function() {
    tableSql = client.schemaBuilder().table('users', function() {
      this.dropIndex('foo');
    }).toSQL();

    equal(1, tableSql.length);
    expect(tableSql[0].sql).to.equal('alter table `users` drop index `users_foo_index`');
  });

  it('test drop index, custom', function() {
    tableSql = client.schemaBuilder().table('users', function() {
      this.dropIndex(null, 'foo');
    }).toSQL();

    equal(1, tableSql.length);
    expect(tableSql[0].sql).to.equal('alter table `users` drop index `foo`');
  });

  it('test drop foreign', function() {
    tableSql = client.schemaBuilder().table('users', function() {
      this.dropForeign('foo');
    }).toSQL();

    equal(1, tableSql.length);
    expect(tableSql[0].sql).to.equal('alter table `users` drop foreign key `users_foo_foreign`');
  });

  it('test drop foreign, custom', function() {
    tableSql = client.schemaBuilder().table('users', function() {
      this.dropForeign(null, 'foo');
    }).toSQL();

    equal(1, tableSql.length);
    expect(tableSql[0].sql).to.equal('alter table `users` drop foreign key `foo`');
  });

  it('test drop timestamps', function() {
    tableSql = client.schemaBuilder().table('users', function() {
      this.dropTimestamps();
    }).toSQL();

    equal(1, tableSql.length);
    expect(tableSql[0].sql).to.equal('alter table `users` drop `created_at`, drop `updated_at`');
  });

  it('test rename table', function() {
    tableSql = client.schemaBuilder().renameTable('users', 'foo').toSQL();

    equal(1, tableSql.length);
    expect(tableSql[0].sql).to.equal('rename table `users` to `foo`');
  });

  it('test adding primary key', function() {
    tableSql = client.schemaBuilder().table('users', function() {
      this.primary('foo', 'bar');
    }).toSQL();

    equal(1, tableSql.length);
    expect(tableSql[0].sql).to.equal('alter table `users` add primary key `bar`(`foo`)');
  });

  it('test adding unique key', function() {
    tableSql = client.schemaBuilder().table('users', function() {
      this.unique('foo', 'bar');
    }).toSQL();

    equal(1, tableSql.length);
    expect(tableSql[0].sql).to.equal('alter table `users` add unique `bar`(`foo`)');
  });

  it('test adding index', function() {
    tableSql = client.schemaBuilder().table('users', function() {
      this.index(['foo', 'bar'], 'baz');
    }).toSQL();

    equal(1, tableSql.length);
    expect(tableSql[0].sql).to.equal('alter table `users` add index `baz`(`foo`, `bar`)');
  });

  it('test adding foreign key', function() {
    tableSql = client.schemaBuilder().table('users', function() {
      this.foreign('foo_id').references('id').on('orders');
    }).toSQL();

    equal(1, tableSql.length);
    expect(tableSql[0].sql).to.equal('alter table `users` add constraint `users_foo_id_foreign` foreign key (`foo_id`) references `orders` (`id`)');

    tableSql = client.schemaBuilder().table('users', function() {
      this.integer('foo_id').references('id').on('orders');
    }).toSQL();

    equal(2, tableSql.length);
    expect(tableSql[0].sql).to.equal('alter table `users` add `foo_id` int');
    expect(tableSql[1].sql).to.equal('alter table `users` add constraint `users_foo_id_foreign` foreign key (`foo_id`) references `orders` (`id`)');
  });

  it('adding foreign key with specific identifier', function() {
    tableSql = client.schemaBuilder().table('users', function() {
      this.foreign('foo_id', 'fk_foo').references('id').on('orders');
    }).toSQL();

    equal(1, tableSql.length);
    expect(tableSql[0].sql).to.equal('alter table `users` add constraint `fk_foo` foreign key (`foo_id`) references `orders` (`id`)');

    tableSql = client.schemaBuilder().table('users', function() {
      this.integer('foo_id').references('id').on('orders').withKeyName('fk_foo');
    }).toSQL();

    equal(2, tableSql.length);
    expect(tableSql[0].sql).to.equal('alter table `users` add `foo_id` int');
    expect(tableSql[1].sql).to.equal('alter table `users` add constraint `fk_foo` foreign key (`foo_id`) references `orders` (`id`)');
  });

  it("adds foreign key with onUpdate and onDelete", function() {
    tableSql = client.schemaBuilder().createTable('person', function(table) {
      table.integer('user_id').notNull().references('users.id').onDelete('SET NULL');
      table.integer('account_id').notNull().references('id').inTable('accounts').onUpdate('cascade');
    }).toSQL();
    equal(3, tableSql.length);
    expect(tableSql[1].sql).to.equal('alter table `person` add constraint `person_user_id_foreign` foreign key (`user_id`) references `users` (`id`) on delete SET NULL');
    expect(tableSql[2].sql).to.equal('alter table `person` add constraint `person_account_id_foreign` foreign key (`account_id`) references `accounts` (`id`) on update cascade');
  });

  it('test adding incrementing id', function() {
    tableSql = client.schemaBuilder().table('users', function() {
      this.increments('id');
    }).toSQL();

    equal(1, tableSql.length);
    expect(tableSql[0].sql).to.equal('alter table `users` add `id` int unsigned not null auto_increment primary key');
  });

  it('test adding big incrementing id', function() {
    tableSql = client.schemaBuilder().table('users', function() {
      this.bigIncrements('id');
    }).toSQL();

    equal(1, tableSql.length);
    expect(tableSql[0].sql).to.equal('alter table `users` add `id` bigint unsigned not null auto_increment primary key');
  });

  it('test adding column after another column', function() {
    tableSql = client.schemaBuilder().table('users', function() {
      this.string('name').after('foo');
    }).toSQL();

    equal(1, tableSql.length);
    expect(tableSql[0].sql).to.equal('alter table `users` add `name` varchar(255) after `foo`');
  });

  it('test adding column after another column with comment', function() {
    tableSql = client.schemaBuilder().table('users', function() {
      this.string('name').after('foo').comment('bar');
    }).toSQL();

    equal(1, tableSql.length);
    expect(tableSql[0].sql).to.equal('alter table `users` add `name` varchar(255) comment \'bar\' after `foo`');
  });

  it('test adding column on the first place', function() {
    tableSql = client.schemaBuilder().table('users', function() {
      this.string('first_name').first();
    }).toSQL();

    equal(1, tableSql.length);
    expect(tableSql[0].sql).to.equal('alter table `users` add `first_name` varchar(255) first');
  });

  it('test adding column on the first place with comment', function() {
    tableSql = client.schemaBuilder().table('users', function() {
      this.string('first_name').first().comment('bar');
    }).toSQL();

    equal(1, tableSql.length);
    expect(tableSql[0].sql).to.equal('alter table `users` add `first_name` varchar(255) comment \'bar\' first');
  });

  it('test adding string', function() {
    tableSql = client.schemaBuilder().table('users', function() {
      this.string('foo');
    }).toSQL();

    equal(1, tableSql.length);
    expect(tableSql[0].sql).to.equal('alter table `users` add `foo` varchar(255)');
  });

  it('uses the varchar column constraint', function() {
    tableSql = client.schemaBuilder().table('users', function() {
      this.string('foo', 100);
    }).toSQL();

    equal(1, tableSql.length);
    expect(tableSql[0].sql).to.equal('alter table `users` add `foo` varchar(100)');
  });

  it('chains notNull and defaultTo', function() {
    tableSql = client.schemaBuilder().table('users', function() {
      this.string('foo', 100).notNull().defaultTo('bar');
    }).toSQL();
    equal(1, tableSql.length);
    expect(tableSql[0].sql).to.equal('alter table `users` add `foo` varchar(100) not null default \'bar\'');
  });

  it('allows for raw values in the default field', function() {
    tableSql = client.schemaBuilder().table('users', function() {
      this.string('foo', 100).nullable().defaultTo(client.raw('CURRENT TIMESTAMP'));
    }).toSQL();

    equal(1, tableSql.length);
    expect(tableSql[0].sql).to.equal('alter table `users` add `foo` varchar(100) null default CURRENT TIMESTAMP');
  });

  it('test adding text', function() {
    tableSql = client.schemaBuilder().table('users', function() {
      this.text('foo');
    }).toSQL();

    equal(1, tableSql.length);
    expect(tableSql[0].sql).to.equal('alter table `users` add `foo` text');
  });

  it('test adding big integer', function() {
    tableSql = client.schemaBuilder().table('users', function() {
      this.bigInteger('foo');
    }).toSQL();

    equal(1, tableSql.length);
    expect(tableSql[0].sql).to.equal('alter table `users` add `foo` bigint');
  });

  it('test adding integer', function() {
    tableSql = client.schemaBuilder().table('users', function() {
      this.integer('foo');
    }).toSQL();

    equal(1, tableSql.length);
    expect(tableSql[0].sql).to.equal('alter table `users` add `foo` int');
  });

  it('test adding medium integer', function() {
    tableSql = client.schemaBuilder().table('users', function() {
      this.mediumint('foo');
    }).toSQL();

    equal(1, tableSql.length);
    expect(tableSql[0].sql).to.equal('alter table `users` add `foo` mediumint');
  });

  it('test adding small integer', function() {
    tableSql = client.schemaBuilder().table('users', function() {
      this.smallint('foo');
    }).toSQL();

    equal(1, tableSql.length);
    expect(tableSql[0].sql).to.equal('alter table `users` add `foo` smallint');
  });

  it('test adding tiny integer', function() {
    tableSql = client.schemaBuilder().table('users', function() {
      this.tinyint('foo');
    }).toSQL();

    equal(1, tableSql.length);
    expect(tableSql[0].sql).to.equal('alter table `users` add `foo` tinyint');
  });

  it('test adding float', function() {
    tableSql = client.schemaBuilder().table('users', function() {
      this.float('foo', 5, 2);
    }).toSQL();

    equal(1, tableSql.length);
    expect(tableSql[0].sql).to.equal('alter table `users` add `foo` float(5, 2)');
  });

  it('test adding double', function() {
    tableSql = client.schemaBuilder().table('users', function() {
      this.double('foo');
    }).toSQL();

    equal(1, tableSql.length);
    expect(tableSql[0].sql).to.equal('alter table `users` add `foo` double');
  });

  it('test adding double specifying precision', function() {
    tableSql = client.schemaBuilder().table('users', function() {
      this.double('foo', 15, 8);
    }).toSQL();

    equal(1, tableSql.length);
    expect(tableSql[0].sql).to.equal('alter table `users` add `foo` double(15, 8)');
  });

  it('test adding decimal', function() {
    tableSql = client.schemaBuilder().table('users', function() {
      this.decimal('foo', 5, 2);
    }).toSQL();

    equal(1, tableSql.length);
    expect(tableSql[0].sql).to.equal('alter table `users` add `foo` decimal(5, 2)');
  });
  
  it('test adding decimal, no precision', function() {
    expect(() => {
      tableSql = client.schemaBuilder().table('users', function() {
        this.decimal('foo', null);
      }).toSQL();
    }).to.throw('Specifying no precision on decimal columns is not supported');
  });

  it('test adding boolean', function() {
    tableSql = client.schemaBuilder().table('users', function() {
      this.boolean('foo');
    }).toSQL();

    equal(1, tableSql.length);
    expect(tableSql[0].sql).to.equal('alter table `users` add `foo` boolean');
  });

  it('test adding enum', function() {
    tableSql = client.schemaBuilder().table('users', function() {
      this.enum('foo', ['bar', 'baz']);
    }).toSQL();

    equal(1, tableSql.length);
    expect(tableSql[0].sql).to.equal('alter table `users` add `foo` enum(\'bar\', \'baz\')');
  });

  it('test adding date', function() {
    tableSql = client.schemaBuilder().table('users', function() {
      this.date('foo');
    }).toSQL();

    equal(1, tableSql.length);
    expect(tableSql[0].sql).to.equal('alter table `users` add `foo` date');
  });

  it('test adding date time', function() {
    tableSql = client.schemaBuilder().table('users', function() {
      this.dateTime('foo');
    }).toSQL();

    equal(1, tableSql.length);
    expect(tableSql[0].sql).to.equal('alter table `users` add `foo` datetime');
  });

  it('test adding time', function() {
    tableSql = client.schemaBuilder().table('users', function() {
      this.time('foo');
    }).toSQL();

    equal(1, tableSql.length);
    expect(tableSql[0].sql).to.equal('alter table `users` add `foo` time');
  });

  it('test adding time stamp', function() {
    tableSql = client.schemaBuilder().table('users', function() {
      this.timestamp('foo');
    }).toSQL();

    equal(1, tableSql.length);
    expect(tableSql[0].sql).to.equal('alter table `users` add `foo` timestamp');
  });

  it('test adding time stamps', function() {
    tableSql = client.schemaBuilder().table('users', function() {
      this.timestamps();
    }).toSQL();

    equal(1, tableSql.length);
    expect(tableSql[0].sql).to.equal('alter table `users` add `created_at` datetime, add `updated_at` datetime');
  });

  it('test adding binary', function() {
    tableSql = client.schemaBuilder().table('users', function() {
      this.binary('foo');
    }).toSQL();

    equal(1, tableSql.length);
    expect(tableSql[0].sql).to.equal('alter table `users` add `foo` blob');
  });

  it('test adding decimal', function() {
    tableSql = client.schemaBuilder().table('users', function() {
      this.decimal('foo', 2, 6);
    }).toSQL();

    equal(1, tableSql.length);
    expect(tableSql[0].sql).to.equal('alter table `users` add `foo` decimal(2, 6)');
  });

  it('test set comment', function() {
    tableSql = client.schemaBuilder().table('users', function(t) {
      t.comment('Custom comment');
    }).toSQL();

    equal(1, tableSql.length);
    expect(tableSql[0].sql).to.equal('alter table `users` comment = \'Custom comment\'');
  });

  it('test set empty comment', function() {
    tableSql = client.schemaBuilder().table('users', function(t) {
      t.comment('');
    }).toSQL();

    equal(1, tableSql.length);
    expect(tableSql[0].sql).to.equal('alter table `users` comment = \'\'');
  });

  it('set comment to undefined', function() {
    expect(function() {
      client.schemaBuilder().table('user', function(t) {
        t.comment();
      }).toSQL();
    })
    .to.throw(TypeError);
  });

  it('set comment to null', function() {
    expect(function() {
      client.schemaBuilder().table('user', function(t) {
        t.comment(null);
      }).toSQL();
    })
    .to.throw(TypeError);
  });

  it('should alter columns with the alter flag', function() {
    tableSql = client.schemaBuilder().table('users', function() {
      this.string('foo').alter();
      this.string('bar');
    }).toSQL();

    equal(2, tableSql.length);
    expect(tableSql[0].sql).to.equal('alter table `users` add `bar` varchar(255)');
    expect(tableSql[1].sql).to.equal('alter table `users` modify `foo` varchar(255)');
  });

  it('is possible to set raw statements in defaultTo, #146', function() {
    tableSql = client.schemaBuilder().createTable('default_raw_test', function(t) {
      t.timestamp('created_at').defaultTo(client.raw('CURRENT_TIMESTAMP'));
    }).toSQL();

    equal(1, tableSql.length);
    expect(tableSql[0].sql).to.equal('create table `default_raw_test` (`created_at` timestamp default CURRENT_TIMESTAMP)');
  });

  it('allows dropping a unique compound index', function() {
    tableSql = client.schemaBuilder().table('composite_key_test', function(t) {
      t.dropUnique(['column_a', 'column_b']);
    }).toSQL();

    equal(1, tableSql.length);
    expect(tableSql[0].sql).to.equal('alter table `composite_key_test` drop index `composite_key_test_column_a_column_b_unique`');
  });

  it('allows default as alias for defaultTo', function() {
    tableSql = client.schemaBuilder().createTable('default_raw_test', function(t) {
      t.timestamp('created_at').default(client.raw('CURRENT_TIMESTAMP'));
    }).toSQL();

    equal(1, tableSql.length);
    expect(tableSql[0].sql).to.equal('create table `default_raw_test` (`created_at` timestamp default CURRENT_TIMESTAMP)');
  });

  it('sets myISAM engine', function() {
    tableSql = client.schemaBuilder().createTable('users', function(t) {
      t.string('username');
      t.engine('myISAM');
    }).toSQL();
    expect(tableSql[0].sql).to.equal('create table `users` (`username` varchar(255)) engine = myISAM');
  });

  it('#1430 - .primary & .dropPrimary takes columns and constraintName', function() {
    tableSql = client.schemaBuilder().table('users', function(t) {
      t.primary(['test1', 'test2'], 'testconstraintname');
    }).toSQL();
    expect(tableSql[0].sql).to.equal('alter table `users` add primary key `testconstraintname`(`test1`, `test2`)');

    tableSql = client.schemaBuilder().createTable('users', function(t) {
      t.string('test').primary('testconstraintname');
    }).toSQL();

    expect(tableSql[1].sql).to.equal('alter table `users` add primary key `testconstraintname`(`test`)');
  });

});


}