import { Promise } from 'es6-promise'
import fetchPonyfill from 'fetch-ponyfill'
import { vsprintf } from 'sprintf-js'
import formatText from './format_text'
import stringifyAsQueryParam from './stringify_as_query_param'
const fetch = fetchPonyfill(Promise)
/**
* imported from https://github.com/bigchaindb/js-utility-belt/
*
* Global fetch wrapper that adds some basic error handling and ease of use enhancements.
* Considers any non-2xx response as an error.
*
* For more information on fetch, see https://developer.mozilla.org/en-US/docs/Web/API/GlobalFetch/fetch.
*
* Expects fetch to already be available (either in a ES6 environment, bundled through webpack, or
* injected through a polyfill).
*
* @param {string} url Url to request. Can be specified as a sprintf format string (see
* https://github.com/alexei/sprintf.js) that will be resolved using
* `config.urlTemplateSpec`.
* @param {object} config Additional configuration, mostly passed to fetch as its 'init' config
* (see https://developer.mozilla.org/en-US/docs/Web/API/GlobalFetch/fetch#Parameters).
* @param {*} config.jsonBody Json payload to the request. Will automatically be
* JSON.stringify()-ed and override `config.body`.
* @param {string|object} config.query Query parameter to append to the end of the url.
* If specified as an object, keys will be
* decamelized into snake case first.
* @param {*[]|object} config.urlTemplateSpec Format spec to use to expand the url (see sprintf).
* @param {*} config.* All other options are passed through to fetch.
*
* @return {Promise} Promise that will resolve with the response if its status was 2xx;
* otherwise rejects with the response
*/
export default function baseRequest(url, { jsonBody, query, urlTemplateSpec, ...fetchConfig } = {}) {
let expandedUrl = url
if (urlTemplateSpec != null) {
Iif (Array.isArray(urlTemplateSpec) && urlTemplateSpec.length) {
// Use vsprintf for the array call signature
expandedUrl = vsprintf(url, urlTemplateSpec)
} else Eif (urlTemplateSpec &&
typeof urlTemplateSpec === 'object' &&
Object.keys(urlTemplateSpec).length) {
expandedUrl = formatText(url, urlTemplateSpec)
} else if (process.env.NODE_ENV !== 'production') {
// eslint-disable-next-line no-console
console.warn('Supplied urlTemplateSpec was not an array or object. Ignoring...')
}
}
if (query != null) {
Iif (typeof query === 'string') {
expandedUrl += query
} else Eif (query && typeof query === 'object') {
expandedUrl += stringifyAsQueryParam(query)
} else if (process.env.NODE_ENV !== 'production') {
// eslint-disable-next-line no-console
console.warn('Supplied query was not a string or object. Ignoring...')
}
}
if (jsonBody != null) {
fetchConfig.body = JSON.stringify(jsonBody)
}
return fetch.fetch(expandedUrl, fetchConfig)
.then((res) => {
// If status is not a 2xx (based on Response.ok), assume it's an error
// See https://developer.mozilla.org/en-US/docs/Web/API/GlobalFetch/fetch
Iif (!(res && res.ok)) {
throw res
}
return res
})
}
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