pinafore/routes/_utils/ajax.js

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const TIMEOUT = 15000
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function fetchWithTimeout (url, options) {
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return new Promise((resolve, reject) => {
fetch(url, options).then(resolve, reject)
setTimeout(() => reject(new Error(`Timed out after ${TIMEOUT / 1000} seconds`)), TIMEOUT)
})
}
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async function throwErrorIfInvalidResponse (response) {
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let json = await response.json()
if (response.status >= 200 && response.status < 300) {
return json
}
if (json && json.error) {
throw new Error(response.status + ': ' + json.error)
}
throw new Error('Request failed: ' + response.status)
}
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async function _post (url, body, headers, timeout) {
let fetchFunc = timeout ? fetchWithTimeout : fetch
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let opts = {
method: 'POST'
}
if (body) {
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let isFormData = body instanceof FormData
opts.headers = Object.assign(headers, isFormData ? {
'Accept': 'application/json'
} : {
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'Accept': 'application/json',
'Content-Type': 'application/json'
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})
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opts.body = isFormData ? body : JSON.stringify(body)
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} else {
opts.headers = Object.assign(headers, {
'Accept': 'application/json'
})
}
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let response = await fetchFunc(url, opts)
return throwErrorIfInvalidResponse(response)
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}
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async function _get (url, headers, timeout) {
let fetchFunc = timeout ? fetchWithTimeout : fetch
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let response = await fetchFunc(url, {
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method: 'GET',
headers: Object.assign(headers, {
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'Accept': 'application/json'
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})
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})
return throwErrorIfInvalidResponse(response)
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}
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export async function post (url, body, headers = {}) {
return _post(url, body, headers, false)
}
export async function postWithTimeout (url, body, headers = {}) {
return _post(url, body, headers, true)
}
export async function getWithTimeout (url, headers = {}) {
return _get(url, headers, true)
}
export async function get (url, headers = {}) {
return _get(url, headers, false)
}
export function paramsString (paramsObject) {
let params = new URLSearchParams()
Object.keys(paramsObject).forEach(key => {
params.set(key, paramsObject[key])
})
return params.toString()
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}