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August 2, 2019 07:36
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const pMap = require('p-map') | |
const axios = require('axios') | |
const https = require('https') | |
const camelCase = require('camelcase') | |
const { mapKeys, isPlainObject, trimEnd } = require('lodash') | |
const TYPE_AUTHOR = 'author' | |
const TYPE_ATTACHEMENT = 'attachment' | |
class WordPressSource { | |
static defaultOptions () { | |
return { | |
baseUrl: 'https://wordpress-4145-0.cloudclusters.net', /*remplacer par votre adresse url*/ | |
apiBase: 'wp-json', | |
perPage: 100, | |
concurrent: 10, | |
routes: {}, | |
typeName: 'WordPress' | |
} | |
} | |
constructor (api, options) { | |
this.options = options | |
this.restBases = { posts: {}, taxonomies: {}} | |
if (!options.typeName) { | |
throw new Error(`Missing typeName option.`) | |
} | |
if (options.perPage > 100 || options.perPage < 1) { | |
throw new Error(`${options.typeName}: perPage cannot be more than 100 or less than 1.`) | |
} | |
const baseUrl = trimEnd(options.baseUrl, '/') | |
this.client = axios.create({ | |
httpsAgent: new https.Agent({ | |
rejectUnauthorized: false | |
}), | |
baseURL: `${baseUrl}/${options.apiBase}` | |
}) | |
this.routes = { | |
post: '/:year/:month/:day/:slug', | |
post_tag: '/tag/:slug', | |
category: '/category/:slug', | |
author: '/author/:slug', | |
...this.options.routes | |
} | |
api.loadSource(async store => { | |
this.store = store | |
console.log(`Loading data from ${baseUrl}`) | |
await this.getPostTypes(store) | |
await this.getUsers(store) | |
await this.getTaxonomies(store) | |
await this.getPosts(store) | |
}) | |
} | |
async getPostTypes (store) { | |
const { data } = await this.fetch('wp/v2/types', {}, {}) | |
for (const type in data) { | |
const options = data[type] | |
this.restBases.posts[type] = options.rest_base | |
store.addContentType({ | |
typeName: this.createTypeName(type), | |
route: this.routes[type] || `/${options.rest_base}/:slug` | |
}) | |
} | |
} | |
async getUsers (store) { | |
const { data } = await this.fetch('wp/v2/users') | |
const authors = store.addContentType({ | |
typeName: this.createTypeName(TYPE_AUTHOR), | |
route: this.routes.author | |
}) | |
for (const author of data) { | |
const fields = this.normalizeFields(author) | |
const avatars = mapKeys(author.avatar_urls, (v, key) => `avatar${key}`) | |
authors.addNode({ | |
...fields, | |
id: author.id, | |
title: author.name, | |
avatars | |
}) | |
} | |
} | |
async getTaxonomies (store) { | |
const { data } = await this.fetch('wp/v2/taxonomies', {}, {}) | |
for (const type in data) { | |
const options = data[type] | |
const taxonomy = store.addContentType({ | |
typeName: this.createTypeName(type), | |
route: this.routes[type] || `/${options.rest_base}/:slug` | |
}) | |
this.restBases.taxonomies[type] = options.rest_base | |
const terms = await this.fetchPaged(`wp/v2/${options.rest_base}`) | |
for (const term of terms) { | |
taxonomy.addNode({ | |
id: term.id, | |
title: term.name, | |
slug: term.slug, | |
content: term.description, | |
count: term.count | |
}) | |
} | |
} | |
} | |
async getPosts (store) { | |
const { getContentType, createReference } = store | |
const AUTHOR_TYPE_NAME = this.createTypeName(TYPE_AUTHOR) | |
const ATTACHEMENT_TYPE_NAME = this.createTypeName(TYPE_ATTACHEMENT) | |
for (const type in this.restBases.posts) { | |
const restBase = this.restBases.posts[type] | |
const typeName = this.createTypeName(type) | |
const posts = getContentType(typeName) | |
const data = await this.fetchPaged(`wp/v2/${restBase}`) | |
for (const post of data) { | |
const fields = this.normalizeFields(post) | |
fields.author = createReference(AUTHOR_TYPE_NAME, post.author || '0') | |
if (post.type !== TYPE_ATTACHEMENT) { | |
fields.featuredMedia = createReference(ATTACHEMENT_TYPE_NAME, post.featured_media) | |
} | |
// add references if post has any taxonomy rest bases as properties | |
for (const type in this.restBases.taxonomies) { | |
const propName = this.restBases.taxonomies[type] | |
if (post.hasOwnProperty(propName)) { | |
const typeName = this.createTypeName(type) | |
const ref = createReference(typeName, post[propName]) | |
const key = camelCase(propName) | |
fields[key] = ref | |
} | |
} | |
posts.addNode({ ...fields, id: post.id }) | |
} | |
} | |
} | |
async fetch (url, params = {}, fallbackData = []) { | |
let res | |
try { | |
res = await this.client.request({ url, params }) | |
} catch ({ response, code, config }) { | |
if (!response && code) { | |
throw new Error(`${code} - ${config.url}`) | |
} | |
const { url } = response.config | |
const { status } = response.data.data | |
if ([401, 403].includes(status)) { | |
console.warn(`Error: Status ${status} - ${url}`) | |
return { ...response, data: fallbackData } | |
} else { | |
throw new Error(`${status} - ${url}`) | |
} | |
} | |
return res | |
} | |
async fetchPaged (path) { | |
const { perPage, concurrent } = this.options | |
return new Promise(async (resolve, reject) => { | |
let res | |
try { | |
res = await this.fetch(path, { per_page: perPage }) | |
} catch (err) { | |
return reject(err) | |
} | |
const totalItems = parseInt(res.headers['x-wp-total'], 10) | |
const totalPages = parseInt(res.headers['x-wp-totalpages'], 10) | |
try { | |
res.data = ensureArrayData(path, res.data) | |
} catch (err) { | |
return reject(err) | |
} | |
if (!totalItems || totalPages <= 1) { | |
return resolve(res.data) | |
} | |
const queue = [] | |
for (let page = 2; page <= totalPages; page++) { | |
queue.push({ per_page: perPage, page }) | |
} | |
await pMap(queue, async params => { | |
try { | |
const { data } = await this.fetch(path, params) | |
res.data.push(...ensureArrayData(path, data)) | |
} catch (err) { | |
console.log(err.message) | |
} | |
}, { concurrency: concurrent }) | |
resolve(res.data) | |
}) | |
} | |
normalizeFields (fields) { | |
const res = {} | |
for (const key in fields) { | |
if (key.startsWith('_')) continue // skip links and embeds etc | |
res[camelCase(key)] = this.normalizeFieldValue(fields[key]) | |
} | |
return res | |
} | |
normalizeFieldValue (value) { | |
if (value === null) return null | |
if (value === undefined) return null | |
if (Array.isArray(value)) { | |
return value.map(v => this.normalizeFieldValue(v)) | |
} | |
if (isPlainObject(value)) { | |
if (value.post_type && (value.ID || value.id)) { | |
const typeName = this.createTypeName(value.post_type) | |
const id = value.ID || value.id | |
return this.store.createReference(typeName, id) | |
} else if (value.filename && (value.ID || value.id)) { | |
const typeName = this.createTypeName(TYPE_ATTACHEMENT) | |
const id = value.ID || value.id | |
return this.store.createReference(typeName, id) | |
} else if (value.hasOwnProperty('rendered')) { | |
return value.rendered | |
} | |
return this.normalizeFields(value) | |
} | |
return value | |
} | |
createTypeName (name = '') { | |
return camelCase(`${this.options.typeName} ${name}`, { pascalCase: true }) | |
} | |
} | |
function ensureArrayData (url, data) { | |
if (!Array.isArray(data)) { | |
try { | |
data = JSON.parse(data) | |
} catch (err) { | |
throw new Error( | |
`Failed to fetch ${url}\n` + | |
`Expected JSON response but received:\n` + | |
`${data.trim().substring(0, 150)}...\n` | |
) | |
} | |
} | |
return data | |
} | |
module.exports = WordPressSource |
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