init

.env.example

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+WEBDAV_URL=https://your.webdav.host
+WEBDAV_USER=user
+WEBDAV_PW=pass
+WEBFRAME_PATH=/path/to/imgs/
+PORT=3000

.gitignore

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+node_modules
+*-bkp
+dist
+dist-bkp
+.env
+files/*
+
+# https://github.com/github/gitignore/blob/master/Node.gitignore
+# Logs
+logs
+*.log
+npm-debug.log*
+yarn-debug.log*
+yarn-error.log*
+lerna-debug.log*
+
+# Diagnostic reports (https://nodejs.org/api/report.html)
+report.[0-9]*.[0-9]*.[0-9]*.[0-9]*.json
+
+# Runtime data
+pids
+*.pid
+*.seed
+*.pid.lock
+
+# Directory for instrumented libs generated by jscoverage/JSCover
+lib-cov
+
+# Coverage directory used by tools like istanbul
+coverage
+*.lcov
+
+# nyc test coverage
+.nyc_output
+
+# Grunt intermediate storage (https://gruntjs.com/creating-plugins#storing-task-files)
+.grunt
+
+# Bower dependency directory (https://bower.io/)
+bower_components
+
+# node-waf configuration
+.lock-wscript
+
+# Compiled binary addons (https://nodejs.org/api/addons.html)
+build/Release
+
+# Dependency directories
+node_modules/
+jspm_packages/
+
+# Snowpack dependency directory (https://snowpack.dev/)
+web_modules/
+
+# TypeScript cache
+*.tsbuildinfo
+
+# Optional npm cache directory
+.npm
+
+# Optional eslint cache
+.eslintcache
+
+# Microbundle cache
+.rpt2_cache/
+.rts2_cache_cjs/
+.rts2_cache_es/
+.rts2_cache_umd/
+
+# Optional REPL history
+.node_repl_history
+
+# Output of 'npm pack'
+*.tgz
+
+# Yarn Integrity file
+.yarn-integrity
+
+# dotenv environment variables file
+.env
+.env.test
+
+# parcel-bundler cache (https://parceljs.org/)
+.cache
+.parcel-cache
+
+# Next.js build output
+.next
+out
+
+# Nuxt.js build / generate output
+.nuxt
+dist
+
+# Gatsby files
+.cache/
+# Comment in the public line in if your project uses Gatsby and not Next.js
+# https://nextjs.org/blog/next-9-1#public-directory-support
+# public
+
+# vuepress build output
+.vuepress/dist
+
+# Serverless directories
+.serverless/
+
+# FuseBox cache
+.fusebox/
+
+# DynamoDB Local files
+.dynamodb/
+
+# TernJS port file
+.tern-port
+
+# Stores VSCode versions used for testing VSCode extensions
+.vscode-test
+
+# yarn v2
+.yarn/cache
+.yarn/unplugged
+.yarn/build-state.yml
+.yarn/install-state.gz
+.pnp.*

README.md

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+# Webframe
+
+A simple digital picture frame as a website.
+
+Inspired by TeleFrame https://github.com/LukeSkywalker92/TeleFrame

db.json

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+{
+  "files": [
+    {
+      "filename": "/Bilder/WebFrame/photo_2020-06-17_22-54-30_16-9.png",
+      "basename": "photo_2020-06-17_22-54-30_16-9.png",
+      "lastmod": "Thu, 18 Jun 2020 08:17:38 GMT",
+      "size": 1278620,
+      "type": "file",
+      "etag": ""a4b835902fbf096db14a4d959191eac0"",
+      "mime": "image/png"
+    },
+    {
+      "filename": "/Bilder/WebFrame/photo_2020-06-17_22-54-43_16-9.png",
+      "basename": "photo_2020-06-17_22-54-43_16-9.png",
+      "lastmod": "Thu, 18 Jun 2020 08:17:38 GMT",
+      "size": 1708544,
+      "type": "file",
+      "etag": ""19389a5cd0b75b7dbd39b84bb4296dbe"",
+      "mime": "image/png"
+    },
+    {
+      "filename": "/Bilder/WebFrame/photo_2020-06-17_22-54-46_16-9.png",
+      "basename": "photo_2020-06-17_22-54-46_16-9.png",
+      "lastmod": "Thu, 18 Jun 2020 08:17:40 GMT",
+      "size": 1485855,
+      "type": "file",
+      "etag": ""e97d6b75171dc770661d8b133f1f3b3d"",
+      "mime": "image/png"
+    },
+    {
+      "filename": "/Bilder/WebFrame/photo_2020-07-16_17-45-44.jpg",
+      "basename": "photo_2020-07-16_17-45-44.jpg",
+      "lastmod": "Thu, 16 Jul 2020 15:45:49 GMT",
+      "size": 163872,
+      "type": "file",
+      "etag": ""55f39d92914769f86d821ab164aac1cf"",
+      "mime": "image/jpeg"
+    },
+    {
+      "filename": "/Bilder/WebFrame/video_2020-07-16_17-46-45.mp4",
+      "basename": "video_2020-07-16_17-46-45.mp4",
+      "lastmod": "Thu, 16 Jul 2020 15:46:47 GMT",
+      "size": 1305164,
+      "type": "file",
+      "etag": ""add81c6ec9e5b37ba35c1930a6740a28"",
+      "mime": "video/mp4"
+    }
+  ],
+  "count": 5
+}

index.js

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+require('dotenv').config();
+const { createClient } = require('webdav');
+const fs = require('fs');
+const path = require('path');
+
+// init db
+const low = require('lowdb');
+const FileSync = require('lowdb/adapters/FileSync');
+const adapter = new FileSync('db.json');
+const db = low(adapter);
+// db.defaults({ files: [], count: 0}).write();
+
+// create webdav-client
+const client = createClient(
+  process.env.WEBDAV_URL,
+  {
+      username: process.env.WEBDAV_USER,
+      password: process.env.WEBDAV_PW
+  }
+);
+
+
+async function listDir(dir = process.env.WEBFRAME_PATH) {
+  const directoryItems = await client.getDirectoryContents(dir);
+  return directoryItems;
+}
+
+function dlFile(file, dir = process.env.WEBFRAME_PATH) {
+  return client.createReadStream(dir+'/'+file).pipe(fs.createWriteStream('./files/'+file));
+}
+
+client.exists(process.env.WEBFRAME_PATH).then(async data => {
+  if (data) {
+    const list = await listDir(process.env.WEBFRAME_PATH);
+    list.forEach(file => {
+      // if (!fs.existsSync('./files/'+file.basename)) { 
+      const inDb = db.get('files').find({ basename: file.basename }).value() !== undefined ? true : false;
+      if (!inDb) {
+        dlFile(file.basename);
+        db.get('files').push(file).write();
+        db.update('count', n => n + 1).write();
+      }
+    });
+  }  
+});
+
+// webserver
+const express = require('express');
+const app = express();
+
+app.use('/files', express.static(path.join(__dirname, 'files')));
+app.get('/api/files', (req, res) => {
+  res.json(db.get('files').value());
+});
+app.use('*', express.static(path.join(__dirname, 'public')));
+app.listen(process.env.PORT, () => console.log(`Example app listening at http://localhost:${process.env.PORT}`));
+

package.json

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+{
+  "name": "webframe",
+  "version": "1.0.0",
+  "description": "",
+  "main": "index.js",
+  "scripts": {
+    "test": "echo \"Error: no test specified\" && exit 1"
+  },
+  "author": "",
+  "license": "MIT",
+  "dependencies": {
+    "dotenv": "^8.2.0",
+    "express": "^4.17.1",
+    "lowdb": "^1.0.0",
+    "webdav": "^3.3.0"
+  },
+  "devDependencies": {
+    "nodemon": "^2.0.4"
+  }
+}

public/index.html

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+index