Publish v0.2.13 add first graphql version

README.md

@@ -2,6 +2,9 @@
 ## Fire Js
 This contains various helpers and types.
 
+## Unstable
+the graphql module is unstable.
+
 ## Usage
 ```json
 {

package.json

@@ -1,6 +1,6 @@
 {
 	"name": "fire-lib-js",
-	"version": "0.2.12",
+	"version": "0.2.13",
 	"author": "Sören Meier <[email protected]>",
 	"type": "module",
 	"scripts": {

src/graphql/error.js

@@ -0,0 +1,58 @@
+import ApiError from '../api/error.js';
+
+export default class GraphQlError {
+	/*
+	fields:
+		- kind: str,
+		- errors: should be one of the following
+		  "error message"
+		  { message, ?extensions, ?locations }
+		  [{ message, ?extensions, ?locations }]
+		- data: graphql data if it is available
+
+		extensions might contain apiError
+	*/
+	constructor(kind, errors, data = null) {
+		this.kind = kind;
+
+		if (typeof errors === 'string')
+			errors = [{ message: errors }];
+		if (Array.isArray(errors))
+			errors = errors;
+		else
+			errors = [errors];
+
+		this.errors = errors;
+		this.data = data;
+	}
+
+	static fromJson(json) {
+		let apiError = json.errors.find(e => !!e.extensions?.apiError);
+		if (apiError)
+			apiError = ApiError.fromJson(apiError.extensions.apiError);
+
+		return new GraphQlError(
+			apiError?.kind ?? 'Unknown',
+			json.errors,
+			json.data
+		);
+	}
+
+	static newOther(msg) {
+		return new GraphQlError('Other', msg);
+	}
+
+	get msg() {
+		return this.errors.map(e => e.message).join(', ');
+	}
+
+	toString() {
+		return `${this.kind}: ${this.msg}`;
+	}
+
+	__isGraphQlErrorObject__() {}
+}
+
+export function isGraphQlErrorObject(val) {
+	return typeof (val ? val.__isGraphQlErrorObject__ : null) === 'function';
+}

src/graphql/graphql.js

@@ -0,0 +1,50 @@
+import GraphQlError, { isGraphQlErrorObject } from './error.js';
+
+export default class GraphQl {
+	constructor(url = null) {
+		this.url = url;
+	}
+
+	async request(query, variables = {}, headers = {}) {
+		if (!this.url)
+			throw GraphQlError.newOther('GraphQl url not defined');
+
+		headers['content-type'] = 'application/json';
+
+		let resp;
+		try {
+			resp = await fetch(this.url, {
+				headers,
+				method: 'POST',
+				body: JSON.stringify({
+					query, variables
+				})
+			});
+
+			const json = await resp.json();
+			if (
+				'errors' in json &&
+				Array.isArray(json.errors) &&
+				json.errors.length
+			)
+				throw GraphQlError.fromJson(json);
+
+			if (!resp.ok)
+				throw new GraphQlError('NotOk', 'response code ' + resp.status);
+
+			return json?.data ?? null;
+		} catch (e) {
+			if (isGraphQlErrorObject(e)) {
+				console.log('graphql Errors', e.toString());
+				throw e;
+			}
+
+			throw new GraphQlError('Unknown', {
+				message: e.toString(),
+				extensions: {
+					nativeError: e
+				}
+			});
+		}
+	}
+}