// Copyright (c) 2016, hackbard. All rights reserved. Use of this source code
// is governed by a BSD-style license that can be found in the LICENSE file.

import 'dart:async';

import 'package:angular2/core.dart';
import 'package:angular2/router.dart';

import 'product.dart';
import 'product_service.dart';
import 'product_category.dart';
import 'product_category_service.dart';

import 'package:angular2_rbi/directives.dart';

@Component(
	selector: 'my-products',
	templateUrl: 'product_component.html',
	styleUrls: const ['product_component.css'],
	directives: const [MaterialTextfield,MaterialButton],
	providers: const [ProductService,ProductCategoryService]
)

class ProductComponent implements OnInit {
	final ProductService _prodSrv;
	final ProductCategoryService _prodcatSrv;
	final RouteParams _routeParams;
	final Router _router;

	String prod_category_id;
	String prod_category_name;
	String prod_name;
	double prod_price;
	int prodcnt;

	List<Product> products;
	ProductCategory prodcat;

	ProductComponent(this._prodSrv,this._prodcatSrv,
	                 this._routeParams,this._router) {
		prod_category_name='Category';
		prod_category_id='ID';
	}

	Future<Null> ngOnInit() async {
		var catid=_routeParams.get('id');
		if(catid!=null) {
			products = await (_prodSrv.getByCategory(catid));
			prodcat = await (_prodcatSrv.getById(catid));
		}
		prod_category_name=prodcat.name;
		prod_category_id=prodcat.id;
		prodcnt=products.length;
	}

	Future<Null> updateProductCategory() async {
		bool doupdate=false;
		bool changecat=false;
		if(prodcat.id!=prod_category_id) {
			doupdate=true;
			changecat=true;
		}
		if(prodcat.name!=prod_category_name) {
			doupdate=true;
		}
		if(doupdate) {
			if(changecat) {
				for(Product prod in products) {
					print('Debug: change category of '+
					      prod.name);
					await _prodSrv.updateProd(
						prod.id,
						prod.name,
						prod.price,
						prod_category_id
					);
				}
			}
			print('Debug: Updating product category '+
			      prodcat.name+'/'+prodcat.id+' -> '+
			      prod_category_name+'/'+prod_category_id);
			await _prodcatSrv.updateProdCategory(
				prodcat.id,
				prod_category_name,
				prod_category_id
			);
		}
	}

	Future<Null> deleteProductCategory() async {
		bool delete=false;
		if(products.length==0) {
			delete=true;
		}
		else {
			print('Debug: Not deleting anything!');
		}
		if(delete) {
			print('Debug: Deleting product category '+
			      prodcat.name+'/'+prodcat.id);
			await _prodcatSrv.deleteProdCategory(prodcat.doc_id);
		}
	}

	Future<Null> createProduct() async {
		if(prod_name==null || prod_price==null)
			return;
		print('Debug: Creating product '+prod_name+'/'+
		      prod_price.toString());
		await _prodSrv.createProduct(prod_name,
		                             double.parse(prod_price),
		                             prod_category_id);
	}

	choose(Product prod) {
		goto_product(prod);
	}

	Future<Null> goto_product(Product prod) => _router.navigate([
		'ProductDetail',
		{'id': prod.id.toString()}
	]);

}