var escape = require('./escape'),
	primitive = require('./primitive');


var dialect = {
	name: ['mysql', 'sqlite', 'pg'],
	alias: ['mariadb', 'maria', 'postgres', 'postgresql']
};

function xsql (options) {
	options = options||{};

	// dialect
	if (!options.dialect)
		throw new Error('xsql: Missing dialect name');
	if (dialect.name.concat(dialect.alias).indexOf(options.dialect) == -1)
		throw new Error('xsql: Not supported dialect');
	if (dialect.name.indexOf(options.dialect) != -1)
		this.dialect = options.dialect;
	else {
		if (options.dialect.indexOf('maria') == 0) this.dialect = 'mysql';
		else if (options.dialect.indexOf('postgre') == 0) this.dialect = 'pg';
	}

	// quotes
	if (this.dialect == 'mysql') this.quote = '`';
	else if (this.dialect == 'sqlite') this.quote = '"';
	else if (this.dialect == 'pg') this.quote = '"';

	// schema
	if (this.dialect == 'pg') this._schema = options.schema||'public';

	// typecheck
	if (options.typecheck!==undefined&&'boolean'!==typeof options.typecheck)
		throw new Error('xsql: Typecheck parameter should be boolean');
	this.typecheck = 'boolean'===typeof options.typecheck
		? options.typecheck
		: true;

	// extend
	escape.call(this);
	primitive.call(this);
}


exports = module.exports = xsql;