feat(courses): Add lessons

services/contentful.js

@@ -1,9 +1,11 @@
 const { createClient } = require('contentful')
 
 let client = null
+let previewClient = null
 
-exports.initClient = () => {
-  client = createClient({space: process.env.CF_SPACE, accessToken: process.env.CF_ACCESS_TOKEN})
+exports.initClient = (config = {space: process.env.CF_SPACE, accessToken: process.env.CF_ACCESS_TOKEN}) => {
+  client = createClient(config)
+  previewClient = createClient({...config, host: 'preview.contentful.com'})
 }
 exports.getCourses = () => {
   // to get all the courses we simply request from Contentful all the entries
@@ -11,6 +13,14 @@ exports.getCourses = () => {
   return client.getEntries({content_type: 'course'})
 }
 
+exports.getCourse = (slug) => {
+  // the SDK support link resolution only when you request the collection endpoint
+  // That's why we are using getEntries with a query instead of getEntry(entryId)
+  // make sure to specify the content_type whenever you want to perform a query
+  return client.getEntries({content_type: 'course', 'fields.slug': slug})
+    .then((response) => response.items[0])
+}
+
 exports.getLessons = (courseId) => {
   // TODO
 }