export var Api = {

	initializationStarted: false,
	pendingRequests: 0,

	prepareInitialization() {
		Api.initializationStarted = false;
		Api.pendingRequests = 0;
	},

	initializationCompleted() {
		return Api.initializationStarted && Api.pendingRequests === 0;
	},

	post(context, path, data, onSuccess, onError, options) {
		Api.request(context, path, data, 'POST', onSuccess, onError, options);
	},

	get(context, path, onSuccess, onError, options) {
		Api.request(context, path, {}, 'GET', onSuccess, onError, options);
	},

	async syncGet(context, path, onSuccess, onError) {
		Api.pendingRequests = Api.pendingRequests + 1;
		Api.initializationStarted = true;

		const url = process.env.VUE_APP_API_URL + path;
		await context.$http.get(url).then(response => {
			context.errorResponse = undefined;
			context.submitSuccess = true;
			window.console.debug('Request success');
			Api.pendingRequests = Api.pendingRequests - 1;
			if (typeof onSuccess === 'function') {
				onSuccess(response.body);
			}
		}, errorResponse => {
			context.errorResponse = errorResponse.body;
			context.submitSuccess = false;
			window.console.error('Request failed: ' + errorResponse.body.message);
			Api.pendingRequests = Api.pendingRequests - 1;
			if (typeof onError === 'function') {
				onError(errorResponse.body);
			}
		});
	},

	getWithParam(context, path, data, onSuccess, onError, options) {
		Api.request(context, path, data, 'GET', onSuccess, onError, options);
	},

	put(context, path, data, onSuccess, onError, options) {
		Api.request(context, path, data, 'PUT', onSuccess, onError, options);
	},

	delete(context, path, data, onSuccess, onError, options) {
		Api.request(context, path, data, 'DELETE', onSuccess, onError, options);
	},

	postMultipart(context, path, file, data, onSuccess, onError, options) {
		options = options ? options : {};
		options.headers = options.headers ? options.headers : {};
		options.headers['Content-Type'] = 'multipart/form-data';

		let formData = new FormData();
		formData.set('file', file);

		for (const [key, value] of Object.entries(data)) {
			formData.set(key, value);
		}

		Api.post(context, path, formData, onSuccess, onError, options);
	},

	request(context, path, data, method, onSuccess, onError, options) {
		Api.pendingRequests = Api.pendingRequests + 1;
		Api.initializationStarted = true;

		const url = process.env.VUE_APP_API_URL + path;

		window.console.debug('Sending response to: ' + url);
		window.console.debug('Body: ' + JSON.stringify(data));
		const successHandler = response => {
			context.errorResponse = undefined;
			context.submitSuccess = true;
			window.console.debug('Request success');
			Api.pendingRequests = Api.pendingRequests - 1;
			if (typeof onSuccess === 'function') {
				onSuccess(response.body);
			}
		};

		const errorHandler = errorResponse => {
			context.errorResponse = errorResponse.body;
			context.submitSuccess = false;
			window.console.error('Request failed: ' + errorResponse.body.message);
			Api.pendingRequests = Api.pendingRequests - 1;
			if (typeof onError === 'function') {
				onError(errorResponse.body);
			}
		};

		if (method === 'POST') {
			context.$http.post(url, data, options).then(successHandler, errorHandler);
		} else if (method === 'GET') {
			context.$http.get(url, {params: data}, options).then(successHandler, errorHandler);
		} else if (method === 'DELETE') {
			context.$http.delete(url, {params: data}, options).then(successHandler, errorHandler);
		} else if (method === 'PUT') {
			context.$http.put(url, data, options).then(successHandler, errorHandler);
		}
	},


};