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