/*

	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 unify	 			from '../unify/unify.js';

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


export default class objectCacheManager{


	objects = new Array();


	removeObjectsByClientID( userID ) {

		var objects 	= this.objects;

		var entries 	= Object.entries( objects );

		var count 		= 0;

		var total 		= 0;

		for( var b = 0; b < entries.length; b++ ) {
			
			var entry 			= entries[b];

			var objectsByID		= Object.entries(  tools.getObjectByEntry( entry ) );

			var path			= tools.getClassNameByEntry( entry );

			var empty 			= true;

			for ( var c = 0; c < objectsByID.length; c++ ) {

				var objectsByUserID = tools.getObjectByEntry( objectsByID[c] );

				var objectID 		= tools.getClassNameByEntry( objectsByID[c] );

				total++;


				if( objectsByUserID[ userID ] ) {

					delete this.objects[path][objectID][userID];

					this.objects[path][objectID].splice( userID, 1 );

					count++;

				} else {

					empty = false;

				}

				this.objects[path][objectID] = this.objects[path][objectID].filter(Boolean);

				if( this.objects[path][objectID].length == 0 ) {

					this.objects[path][objectID] = undefined;

					empty = true;

				}
				
			}

			if( empty ) {

				delete delete this.objects[path][objectID];

			}

			this.objects[path] = this.objects[path].filter(Boolean);


		}	

		// console.log("removed ", count, "objects");

		// console.log("total ", total, "objects");

	}

	addClientObjectByPathID( clientObject, id, applicationPathString, userID ) {
	
		var arrayWithObjects = this.objects[ applicationPathString ];
	
		if( arrayWithObjects ) {
		
			var arrayWithObjectByID = arrayWithObjects[ id ];
		
			if( arrayWithObjectByID ) {
			
				var arrayByUserID = arrayWithObjectByID[ userID ];
				
				if( arrayByUserID ) {
				
					return arrayByUserID;
				
				} else {
				
					arrayWithObjectByID[ userID ] = clientObject;
					
					// this.objects[ applicationPathString ][ id ][ userID ]
				}
	
			} else {
			
				this.objects[ applicationPathString ][ id ] = new Array();
				
				return this.addClientObjectByPathID( clientObject, id, applicationPathString, userID );
			
			}
		
		} else {
		
			this.objects[ applicationPathString ] = new Array();
			
			return this.addClientObjectByPathID( clientObject, id, applicationPathString, userID );

		}
	
	}
	
	getClientObjects( applicationPathString, id ) {
	
		var arrayWithObjects = this.objects[ applicationPathString ];
	
		if( arrayWithObjects ) {
		
			var arrayWithObjectByID = arrayWithObjects[ id ];
		
			if( arrayWithObjectByID ) {
			
				return arrayWithObjectByID;


			} else {
			
				return false
			
			}
		
		} else {
		
			return false;

		}
	}

	addClientObject( clientObject, userID ) {
	
		var object						= clientObject.object;

		unify.extend(object);

		if(object.getApplicationPathString) {

			var applicationPathString 		= object.getApplicationPathString();
			var id							= object.id;

			if( !id ) {

				id = 0;

			}

			var userID						= userID;
			
			if( object.bidirectional ) {

				this.addClientObjectByPathID( clientObject, id, applicationPathString, userID );
		
			}

		}

	}

}