Convert Template function to class

packages/core/src/Site/index.js

@@ -17,7 +17,7 @@ const { ExternalManager } = require('../External/ExternalManager');
 const { LayoutManager, LAYOUT_DEFAULT_NAME, LAYOUT_FOLDER_PATH } = require('../Layout');
 const { SiteLinkManager } = require('../html/SiteLinkManager');
 const { PluginManager } = require('../plugins/PluginManager');
-const Template = require('../../template/template');
+const { Template } = require('./template');
 
 const { sequentialAsyncForEach } = require('../utils/async');
 const { delay } = require('../utils/delay');
@@ -179,7 +179,7 @@ class Site {
    */
   static async initSite(rootPath, templatePath) {
     try {
-      return await new Template(rootPath, templatePath).init();
+      return await new Template(rootPath, templatePath).initTemplate();
     } catch (err) {
       return new Error(`Failed to initialize site with given template with error: ${err.message}`);
     }

packages/core/src/Site/template.js

@@ -0,0 +1,54 @@
+const path = require('path');
+const fs = require('fs-extra');
+
+const fsUtil = require('../utils/fsUtil');
+
+const requiredFiles = ['index.md', 'site.json', '_markbind/'];
+
+const PATH_TO_TEMPLATE = '../../template';
+
+class Template {
+  constructor(rootPath, templatePath) {
+    this.root = rootPath;
+    this.template = path.join(__dirname, PATH_TO_TEMPLATE, templatePath);
+  }
+
+  validateTemplateFromPath() {
+    for (let i = 0; i < requiredFiles.length; i += 1) {
+      const requiredFile = requiredFiles[i];
+      const requiredFilePath = path.join(this.template, requiredFile);
+
+      if (!fs.existsSync(requiredFilePath)) {
+        return false;
+      }
+    }
+
+    return true;
+  }
+
+  generateSiteWithTemplate() {
+    return new Promise((resolve, reject) => {
+      fs.access(this.root)
+        .catch(() => fs.mkdirSync(this.root))
+        .then(() => fsUtil.copySyncWithOptions(this.template, this.root, { overwrite: false }))
+        .then(resolve)
+        .catch(reject);
+    });
+  }
+
+  initTemplate() {
+    if (!this.validateTemplateFromPath()) {
+      throw new Error('Template validation failed. Required files does not exist');
+    }
+
+    return new Promise((resolve, reject) => {
+      this.generateSiteWithTemplate()
+        .then(resolve)
+        .catch(reject);
+    });
+  }
+}
+
+module.exports = {
+  Template,
+};