Add cache

Author: kriskbx

include/file-config.js

@@ -2,10 +2,13 @@ const fs = require('fs');
 const path = require('path');
 const config = require('./config');
 const yaml = require('read-yaml');
+const Hashids = require('hashids');
+const hashids = new Hashids();
 
 const globalConfigDir = process.env[(process.platform == 'win32') ? 'USERPROFILE' : 'HOME'] + '/.gtt';
 const globalConfigFile = globalConfigDir + '/config.yml';
 const frameDir = globalConfigDir + '/frames';
+const cacheDir = globalConfigDir + '/cache';
 const localConfigFile = '/.gtt.yml';
 
 /**
@@ -21,6 +24,10 @@ class fileConfig extends config {
         this.assertGlobalConfig();
         this.workDir = workDir;
         this.data = Object.assign(this.data, this.localExists() ? this.parseLocal() : this.parseGlobal());
+        this.cache = {
+            get: this._cacheGet,
+            set: this._cacheSet
+        };
     }
 
     /**
@@ -66,13 +73,33 @@ class fileConfig extends config {
     assertGlobalConfig() {
         if (!fs.existsSync(this.globalDir)) fs.mkdirSync(this.globalDir, '0644', true);
         if (!fs.existsSync(this.frameDir)) fs.mkdirSync(this.frameDir, '0744', true);
+        if (!fs.existsSync(this.cacheDir)) fs.mkdirSync(this.cacheDir, '0744', true);
         if (!fs.existsSync(this.global)) fs.appendFileSync(this.global, '');
     }
 
     assertLocalConfig() {
         if (!this.localExists()) fs.appendFileSync(this.local, '');
     }
 
+    _cacheGet(key) {
+        let file = this.cacheDir + '/' + hashids.encode(key);
+        if (!fs.existsSync(file)) return false;
+
+        return JSON.parse(fs.readFileSync(file));
+    }
+
+    _cacheSet(key, value) {
+        let file = this.cacheDir + '/' + hashids.encode(key);
+        if (fs.existsSync(file)) fs.unlinkSync(file);
+        fs.appendFileSync(file, JSON.stringify(value));
+
+        return value;
+    }
+
+    get cacheDir() {
+        return cacheDir;
+    }
+
     get frameDir() {
         return frameDir;
     }