add db

testDB.js

@@ -0,0 +1,56 @@
+const settings = require('./settings');
+const Path = __dirname + settings.dbDir
+var api = {}
+
+
+const fs = require('fs').promises;
+
+
+const notFount = 'Error: ENOENT: no such file or directory'
+
+function print(files){
+  console.log(files)
+}
+
+function checkCollection(path, callback, args){
+  const files = fs.readdir(path)
+
+  function fn(files){
+    callback(files, args)
+  }
+
+  files.catch(function(err){
+    console.log('catch')
+    if(err.toString().substr(0, notFount.length) == notFount){
+      p = fs.mkdir(path)
+      p.catch((err) => { throw err })
+      p.then(() => { checkCollection(path, callback, args) })
+    }else{
+      throw err
+    }
+  })
+  files.then(fn)
+}
+
+api.get = function(coll, file, fn){
+  const path = Path + '/' + coll
+
+  checkCollection(path, get, [path, file, fn])
+}
+
+function get(files, args){
+  const path = args[0], file = args[1], fn = args[2]
+  if(files.indexOf(file) == -1){
+    return fn('file not found', null)
+  }
+  data = fs.readFile(path + '/' + file)
+  data.catch((err) => {
+    fn('error reading file', null)
+  })
+  data.then((content) => {
+    fn(false, content)
+  })
+}
+
+api.get('test', 'documents.json', console.log)
+setTimeout(api.get, 1000, 'test2', 'documents.json', console.log)