/*

	Copyright (c) 2020, 2023, The Unified Company.

	This code is part of Unify.

	This program is free software; you can redistribute it and/or modify
	it under the terms of the ESA Software Community License - Strong Copyleft LICENSE,
	as published by the ESA.
	See the ESA Software Community License - Strong Copyleft LICENSE, for more details.

	https://unifyjs.org 

*/

import querySQL					from '../../unify/querySQL.js';

import joinSQL	 				from '../../unify/joinSQL.js';

import tools	 				from '../../unify/tools.js';


export default class queryCount{

	createJoin() {

		var join = new joinSQL();

		join.table 			= this.tableName;

		join.name 			= "children";
		
		join.left.table		= join.name;

		join.right.column	= this.getRight() + "_id";

		join.find( "signed", "true" );
		//join.find( this.tableName + ".joined", "true" ); // please fix

		return join;

	}

	createQuery() {

		var object				= this.getObject();
		

		var leftTable 			= this.parentName;
		
		var rightTable			= object.propertyName;

		var id					= this.collection.getID();

		var joinTableName 		=  leftTable + "_" + rightTable;


		var query 				= new querySQL();
	
		query.table 			= joinTableName;

		query.find( this.getLeft() + "_id", id );


		return query;

	}

	query() {

		var query	= this.createQuery();

		var join	= this.createJoin();
		
		query.addJoin( join );

		// bug : todo : count not length
		return global.database.query( query ).length;

	}

}