From 270da679778eece777574756ab4b2b04baa523df Mon Sep 17 00:00:00 2001
From: QiTao <qitaoweng@gmail.com>
Date: Sat, 8 Feb 2020 11:24:15 -0600
Subject: [PATCH] Task #27 - Defined functions for creating directories for
 exporting as markdown

---
 app/controllers/Export.controller.js | 53 +++++++++++++++++++++++-----
 app/routing/routers/index.routes.js  |  3 +-
 2 files changed, 47 insertions(+), 9 deletions(-)

diff --git a/app/controllers/Export.controller.js b/app/controllers/Export.controller.js
index d0f648d..a172d9f 100644
--- a/app/controllers/Export.controller.js
+++ b/app/controllers/Export.controller.js
@@ -1,4 +1,8 @@
 const Controller = require('libflitter/controller/Controller')
+const os = require('os');
+const fs = require('fs').promises;
+const uuid = require('uuid/v4');
+const path = require('path');
 
 /*
  * Export Controller
@@ -12,22 +16,55 @@ class Export extends Controller {
     /*
      * Serve the main page.
      */
-    async json_export(req, res){
+    async json_export(req, res) {
         const Page = this.models.get('api:Page')
-        const user = req.user
-        const pages = await Page.find({OrgUserId:user.id})
         const Node = this.models.get('api:Node')
-        
+        const user = req.user
+        const pages = await Page.find({ OrgUserId: user._id })
+
         const ExportData = {}
-        for (const page of pages ) {
-            const nodes = await Node.find({PageId:page.UUID})
+        for (const page of pages) {
+            const nodes = await Node.find({ PageId: page.UUID })
 
-            const PageData = {...page}
-            PageData.Nodes = nodes.map( node => { return {...node} } )
+            const PageData = { ...page }
+            PageData.Nodes = nodes.map(node => { return { ...node } })
             ExportData[page.Name] = PageData
         }
         return res.api(ExportData)
     }
+    async markdown_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._markdown_recurse(page0, temp_dir)
+        return res.api({temp_dir})
+    }
+
+    async _markdown_recurse(root, temp_dir) {
+        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 }})
+        console.log('child', child)
+        for (const page of child) {
+            const markdown = this._generate_markdown(page)
+            if (page.ChildPageIds && page.ChildPageIds.length) {
+                const sub_temp_dir = path.resolve(temp_dir, page.Name.replace(/\s/g, '_'))
+                console.log('page', page, 'sub_temp', sub_temp_dir)
+                await fs.mkdir(sub_temp_dir)
+                this._markdown_recurse(page, sub_temp_dir)
+            }
+        }
+    }
+    async _generate_markdown(page) {
+        const Node = this.models.get('api:Node')
+        const nodes = await Node.find({ PageId: page.UUID })
+        return nodes.map(x => { return x.Value.Value }).join('\n')
+    }
 }
 
 module.exports = exports = Export
\ No newline at end of file
diff --git a/app/routing/routers/index.routes.js b/app/routing/routers/index.routes.js
index c1ea00f..60a0dea 100644
--- a/app/routing/routers/index.routes.js
+++ b/app/routing/routers/index.routes.js
@@ -46,7 +46,8 @@ const index = {
         // your own route protected by 'middleware::auth:UserOnly'
         '/dash': [ 'controller::Home.welcome' ],
         '/login': [ 'middleware::auth:GuestOnly', 'controller::Home.get_login' ],
-        '/test-export' : ['controller::Export.json_export' ],
+        '/test-json' : [ 'controller::Export.json_export' ],
+        '/test-markdown' : [ 'controller::Export.markdown_export' ]
     },
 
     /*