Add theme creation command

lib/console/index.js

@@ -17,5 +17,13 @@ module.exports = function(ctx) {
     ]
   }, require('./init'));
 
+  console.register('theme', 'Create a new theme folder structure.', {
+    desc: 'Create a new Hexo theme folder structure at the current directory.',
+    usage: '[name]',
+    arguments: [
+      {name: 'name', desc: 'The name of your new theme'}
+    ]
+  }, require('./theme'));
+
   console.register('version', 'Display version information.', {}, require('./version'));
 };

lib/console/theme.js

@@ -0,0 +1,54 @@
+'use strict';
+
+var Promise = require('bluebird');
+var fs = require('fs');
+var path = require('path');
+
+var themeStructureFolders = [
+  'languages',
+  'layout',
+  'scripts',
+  'source'
+];
+
+function parseArguments(args) {
+  return { name: args._[0] };
+}
+
+function addFolder(pathName) {
+  fs.mkdirSync(pathName);
+}
+
+function addFile(directoryPath, fileName) {
+  fs.writeFileSync(path.join(directoryPath, fileName), '');
+}
+
+function themeConsole(args) {
+  var name = parseArguments(args).name;
+
+  if (!name) {
+    return Promise.reject(new Error('A theme name must be provided'));
+  }
+
+  var baseDirectory = this.base_dir;
+  var themeDirectory = path.join(baseDirectory, name);
+
+  if (fs.existsSync(themeDirectory)) {
+    return Promise.reject(
+      new Error('Seems you already have `' + name + '` in your directory')
+    );
+  }
+
+  addFolder(themeDirectory);
+  addFile(themeDirectory, 'config.yml');
+
+  themeStructureFolders.forEach(folderName => {
+    var folderPath = path.join(themeDirectory, folderName);
+    addFolder(folderPath);
+    addFile(folderPath, '.gitkeep');
+  });
+
+  return Promise.resolve();
+}
+
+module.exports = themeConsole;

test/index.js

@@ -10,5 +10,6 @@ describe('hexo-cli', function() {
   require('./scripts/hexo');
   require('./scripts/init');
   require('./scripts/help');
+  require('./scripts/theme');
   require('./scripts/version');
 });

test/scripts/theme.js

@@ -0,0 +1,62 @@
+'use strict';
+
+var should = require('chai').should(); // eslint-disable-line
+var fs = require('fs');
+var path = require('path');
+var rewire = require('rewire');
+var sinon = require('sinon');
+var Context = require('../../lib/context');
+
+describe('theme', function() {
+  var context, themeModule;
+
+  beforeEach(function() {
+    context = new Context();
+    themeModule = require('../../lib/console/theme');
+  });
+
+  it('throw error when folder already exists', function() {
+    var params = { _: [] };
+
+    return themeModule
+      .call(context, params)
+      .catch(function(error) {
+        error.message.should.contain('A theme name must be provided');
+      });
+  });
+
+  it('create theme initial structure', function() {
+    var params = { _: ['my-hexo-theme'] };
+    var themeModule = rewire('../../lib/console/theme');
+    var mkdirSpy = sinon.spy();
+    var writeFileSpy = sinon.spy();
+    var fsMock = {
+      mkdirSync: mkdirSpy,
+      writeFileSync: writeFileSpy
+    };
+
+    return themeModule
+      .__with__({
+        fs: Object.assign(fs, fsMock)
+      })(function() {
+        return themeModule.call(context, params);
+      })
+      .then(function() {
+        mkdirSpy.args.should.eql([
+          [path.join(context.base_dir, 'my-hexo-theme')],
+          [path.join(context.base_dir, 'my-hexo-theme/languages')],
+          [path.join(context.base_dir, 'my-hexo-theme/layout')],
+          [path.join(context.base_dir, 'my-hexo-theme/scripts')],
+          [path.join(context.base_dir, 'my-hexo-theme/source')]
+        ]);
+
+        writeFileSpy.args.should.eql([
+          [path.join(context.base_dir, 'my-hexo-theme/config.yml'), ''],
+          [path.join(context.base_dir, 'my-hexo-theme/languages/.gitkeep'), ''],
+          [path.join(context.base_dir, 'my-hexo-theme/layout/.gitkeep'), ''],
+          [path.join(context.base_dir, 'my-hexo-theme/scripts/.gitkeep'), ''],
+          [path.join(context.base_dir, 'my-hexo-theme/source/.gitkeep'), '']
+        ]);
+      });
+  });
+});