Initial commit

library/LibFile.js

@@ -0,0 +1,45 @@
+const fs = require('fs');
+const path = require("path");
+
+const STORAGE_PATH = path.join(__dirname, '../files/storage/');
+
+class LibFile {
+  static save(filename, dirpath, rawBase64) {
+    return new Promise((resolve, reject) => {
+      const cleanBase64 = rawBase64.replace(/^data:(image|application)\/(png|jpg|jpeg);base64,/, '');
+      const saveLocation = `${STORAGE_PATH}${dirpath}/${filename}`;
+
+      LibFile.ensureDirectoryExistence(saveLocation);
+
+      fs.writeFile(saveLocation, cleanBase64, 'base64', function (err) {
+        if (err) return reject(err);
+        resolve(`${dirpath}/${filename}`);
+      });
+    });
+  }
+
+  static ensureDirectoryExistence(filePath) {
+    var dirname = path.dirname(filePath);
+    if (fs.existsSync(dirname)) {
+      return true;
+    }
+    LibFile.ensureDirectoryExistence(dirname);
+    fs.mkdirSync(dirname);
+  }
+
+  static remove(filenamepath) {
+    return new Promise((resolve, reject) => {
+      const removeLocation = `${STORAGE_PATH}${filenamepath}`;
+      // if not exists mean, have been deleted
+      if (!fs.existsSync(removeLocation)) return resolve(true);
+      // if exist mean not deleted
+      fs.unlink(removeLocation, function(err) {
+        if (err) return reject(err);
+        resolve(true);
+      });
+    })
+  }
+
+}
+
+module.exports = LibFile;