Add endpoint for retrieving page versions

app/controllers/api/v1/Page.controller.js

@@ -8,6 +8,37 @@ const Node = require('../../../models/api/Node.model')
  * Put some description here!
  */
 class Page extends Controller {
+    static get services() {
+        return [...super.services, 'models']
+    }
+
+    async get_page_versions(req, res, next) {
+        const User = this.models.get('auth:User')
+        const PageId = req.params.PageId
+        const user = req.user
+
+        let page = await PageModel.findOne({UUID: PageId})
+        if ( !page ) return res.status(404).message('Page not found with that ID.').api({})
+
+        if ( !(await page.is_accessible_by(user)) ) return req.security.deny()
+
+        const versions = page.version_archive.map(version_data => {
+            return {
+                current_version: Number(version_data.version_num) === Number(page.version_num),
+                version_num: version_data.version_num,
+                version_user_id: version_data.version_user_id,
+                version_message: version_data.version_message,
+                version_UUID: version_data.version_UUID,
+            }
+        })
+
+        for ( const version of versions ) {
+            version.user_display = (await User.findById(version.version_user_id))?.uid || 'Unknown User'
+        }
+
+        return res.api(versions.reverse())
+    }
+
     async get_page(req, res) {
         const PageId = req.params.PageId
         const user = req.user

app/routing/routers/api/v1.routes.js

@@ -25,6 +25,9 @@ const index = {
         // Get the data for the specified page
         '/page/:PageId': ['controller::api:v1:Page.get_page'],
 
+        // Get the available versions of the given page
+        '/page/:PageId/versions': ['controller::api:v1:Page.get_page_versions'],
+
         // Get the nodes present on the specified page
         '/page/:PageId/nodes': ['controller::api:v1:Page.get_nodes'],