Task #26 - Created general layout for exporting to html

app/controllers/Export.controller.js

@@ -79,6 +79,47 @@ class Export extends Controller {
             return x.Value.Value
         }).join('\n')
     }
+    async html_export(req, res) {
+        const Page = this.models.get('api:Page')
+        const Node = this.models.get('api:Node')
+        const user = req.user
+        const page0 = await Page.findOne({ OrgUserId: user._id, ParentId: '0' }) //Imaginary root
+        const temp_dir = path.resolve(os.tmpdir(), uuid())
+
+        await fs.mkdir(temp_dir)
+        this._html_recurse(page0, temp_dir)
+
+        const exec = require('child_process').exec;
+        exec('zip -r ' + path.resolve(temp_dir, 'archive.zip') + ' ' + path.resolve(temp_dir), (error) => {
+            if (error) {
+                console.error(`exec error: ${error}`);
+                return res.error(500);
+                return;
+            }
+
+            return res.sendFile(`${path.resolve(temp_dir, 'archive.zip')}`)
+        })
+    }
+    async _html_recurse(root, temp_dir) { //recursive function for creating directory and generating html pages
+        console.log('root', root)
+        const Page = this.models.get('api:Page')
+        //const child = await root.childPages
+        const child = await Page.find({ UUID: { $in: root.ChildPageIds } })
+
+        for (const page of child) {
+            const html = this._generate_html(page)
+            if (page.ChildPageIds && page.ChildPageIds.length) {
+                const sub_temp_dir = path.resolve(temp_dir, page.Name.replace(/\s/g, '_'))
+                await fs.mkdir(sub_temp_dir)
+                this._html_recurse(page, sub_temp_dir)
+            }
+        }
+    }
+    async _generate_html(page) { //generate html
+        const Node = this.models.get('api:Node')
+        const nodes = await Node.find({ PageId: page.UUID })
+        return nodes.map(x => {return x.to_html()}).join('\n')
+    }
 }
 
 module.exports = exports = Export