'use strict';

const _ = require('lodash');
const AbstractDialect = require('../abstract');
const ConnectionManager = require('./connection-manager');
const Query = require('./query');
const QueryGenerator = require('./query-generator');
const DataTypes = require('../../data-types').sqlite;

class SqliteDialect extends AbstractDialect {
  constructor(sequelize) {
    super();
    this.sequelize = sequelize;
    this.connectionManager = new ConnectionManager(this, sequelize);
    this.QueryGenerator = _.extend({}, QueryGenerator, {
      options: sequelize.options,
      _dialect: this,
      sequelize
    });
  }
}

SqliteDialect.prototype.supports = _.merge(_.cloneDeep(AbstractDialect.prototype.supports), {
  'DEFAULT': false,
  'DEFAULT VALUES': true,
  'UNION ALL': false,
  'IGNORE': ' OR IGNORE',
  index: {
    using: false,
    where: true
  },
  transactionOptions: {
    type: true,
    autocommit: false
  },
  constraints: {
    addConstraint: false,
    dropConstraint: false
  },
  joinTableDependent: false,
  groupedLimit: false,
  ignoreDuplicates: ' OR IGNORE',
  JSON: true
});

ConnectionManager.prototype.defaultVersion = '3.8.0';
SqliteDialect.prototype.Query = Query;
SqliteDialect.prototype.DataTypes = DataTypes;
SqliteDialect.prototype.name = 'sqlite';
SqliteDialect.prototype.TICK_CHAR = '`';
SqliteDialect.prototype.TICK_CHAR_LEFT = SqliteDialect.prototype.TICK_CHAR;
SqliteDialect.prototype.TICK_CHAR_RIGHT = SqliteDialect.prototype.TICK_CHAR;

module.exports = SqliteDialect;
module.exports.SqliteDialect = SqliteDialect;
module.exports.default = SqliteDialect;