refactoring 1 of 2

1 files changed, 89 insertions, 0 deletions

diff --git a/server/src/serverLib/ConfigManager.js b/server/src/serverLib/ConfigManager.js
new file mode 100644
index 0000000..ebec050
--- /dev/null
+++ b/server/src/serverLib/ConfigManager.js
@@ -0,0 +1,89 @@
+/**
+  * Server configuration manager, handling loading, creation, parsing and saving
+  * of the main config.json file
+  *
+  * Version: v2.0.0
+  * Developer: Marzavec ( https://github.com/marzavec )
+  * License: WTFPL ( http://www.wtfpl.net/txt/copying/ )
+  *
+  */
+const dateFormat = require('dateformat');
+const fse = require('fs-extra');
+const path = require('path');
+
+class ConfigManager {
+  /**
+    * Create a `ConfigManager` instance for managing application settings
+    *
+    * @param {String} base executing directory name; __dirname
+    */
+  constructor (base = __dirname) {
+    this.configPath = path.resolve(base, 'config/config.json');
+
+    if (!fse.existsSync(this.configPath)){
+      fse.ensureFileSync(this.configPath);
+    }
+  }
+
+  /**
+    * (Re)builds the config.json (main server config), or loads the config into mem
+    * if rebuilding, process will exit- this is to allow a process manager to take over
+    *
+    * @param {Boolean} reconfiguring set to true by `scripts/configure.js`, will exit if true
+    */
+  async load () {
+    try {
+      this.config = fse.readJsonSync(this.configPath);
+    } catch (e) {
+      return false;
+    }
+
+    return this.config;
+  }
+
+  /**
+    * Creates backup of current config into configPath
+    *
+    */
+  async backup () {
+    const backupPath = `${this.configPath}.${dateFormat('dd-mm-yy-HH-MM-ss')}.bak`;
+    fse.copySync(this.configPath, backupPath);
+
+    return backupPath;
+  }
+
+  /**
+    * First makes a backup of the current `config.json`, then writes current config
+    * to disk
+    *
+    */
+  async save () {
+    const backupPath = await this.backup();
+
+    try {
+      fse.writeJSONSync(this.configPath, this.config);
+      fse.removeSync(backupPath);
+
+      return true;
+    } catch (err) {
+      console.log(`Failed to save config file: ${err}`);
+
+      return false;
+    }
+  }
+
+  /**
+    * Updates current config[`key`] with `value` then writes changes to disk
+    *
+    * @param {*} key arbitrary configuration key
+    * @param {*} value new value to change `key` to
+    */
+  async set (key, value) {
+    const realKey = `${key}`;
+    this.config[realKey] = value;
+
+    return await this.save();
+  }
+}
+
+module.exports = ConfigManager;