wip

static/js/api.mjs

@@ -0,0 +1,67 @@
+export class API {
+	// query resolves into the JSON data produced by the application, or an exception with 'type' and 'error' properties.
+	static async query(method, path, request) {
+		return new Promise((resolve, reject) => {
+			const body = JSON.stringify(request)
+			const headers = {}
+
+			// Authentication is done with a bearer token.
+			// Here provided to the backend if set.
+			const token = localStorage.getItem('token')
+			if (token) {
+				headers.Authorization = `Bearer ${token}`
+			}
+
+			fetch(path, { method, headers, body })
+				.then(response => {
+					// An HTTP communication level error occured.
+					if (!response.ok || response.status != 200)
+						return reject({
+							type: 'http',
+							error: response,
+						})
+					return response.json()
+				})
+				.then(json => {
+					// Application level response are handled here.
+					if (!json.OK)
+						return reject({
+							type: 'application',
+							error: json.Error,
+							application: json,
+						})
+					resolve(json)
+				})
+				.catch(err =>
+					// Catch any other errors from fetch.
+					reject({
+						type: 'http',
+						error: err,
+					}))
+		})
+	}
+
+	static hasAuthenticationToken() {//{{{
+		const token = localStorage.getItem('token')
+		return token !== null && token !== ''
+	}//}}}
+	static authenticate(username, password) {//{{{
+		return new Promise((resolve, reject) => {
+			const req = { username, password }
+			API.query('POST', '/user/authenticate', req)
+				.then(response => {
+					localStorage.setItem('token', response.Token)
+					localStorage.setItem('user', JSON.stringify(response.User))
+					resolve(response.User)
+				})
+				.catch(e => {
+					console.log(e.type, e.error)
+					reject(e.error)
+				})
+		})
+	}//}}}
+	static logout() {//{{{
+		localStorage.removeItem('token')
+		location.href = '/'
+	}//}}}
+}