add nuxt generate

Author: CKGrafico

nuxt.generate.js

@@ -0,0 +1,74 @@
+const axios = require('axios');
+
+// From: https://www.storyblok.com/faq/how-to-generate-routes-for-nuxt-js-using-storyblok
+module.exports = function generateStoryblokUrls(token) {
+  return {
+    routes: function(callback) {
+      const per_page = 10;
+      const version = 'published';
+      let cache_version = 0;
+
+      let page = 1;
+
+      // other routes that are not in Storyblok with their slug.
+      let routes = ['/']; // adds home directly but with / instead of /home
+
+      // Load space and receive latest cache version key to improve performance
+      axios
+        .get(`https://api.storyblok.com/v1/cdn/spaces/me?token=${token}`)
+        .then(space_res => {
+          // timestamp of latest publish
+          cache_version = space_res.data.space.version;
+
+          // Call first Page of the Stories
+          axios
+            .get(
+              `https://api.storyblok.com/v1/cdn/stories?token=${token}&version=${version}&per_page=${per_page}&page=${page}&cv=${cache_version}`
+            )
+            .then(res => {
+              res.data.stories.forEach(story => {
+                if (story.full_slug != 'home') {
+                  routes.push('/' + story.full_slug);
+                }
+              });
+
+              // Check if there are more pages available otherwise execute callback with current routes.
+              const total = res.headers.total;
+              const maxPage = Math.ceil(total / per_page);
+              if (maxPage <= 1) {
+                callback(null, routes);
+                return;
+              }
+
+              // Since we know the total we now can pregenerate all requests we need to get all stories
+              let contentRequests = [];
+              for (let page = 2; page <= maxPage; page++) {
+                contentRequests.push(
+                  axios.get(
+                    `https://api.storyblok.com/v1/cdn/stories?token=${token}&version=${version}&per_page=${per_page}&page=${page}`
+                  )
+                );
+              }
+
+              // Axios allows us to exectue all requests using axios.spread we will than generate our routes and execute the callback
+              axios
+                .all(contentRequests)
+                .then(
+                  axios.spread((...responses) => {
+                    responses.forEach(response => {
+                      response.data.stories.forEach(story => {
+                        if (story.full_slug != 'home') {
+                          routes.push('/' + story.full_slug);
+                        }
+                      });
+                    });
+
+                    callback(null, routes);
+                  })
+                )
+                .catch(callback);
+            });
+        });
+    }
+  };
+};