Fix/no video prompt (#13)

* fix: no video prompt

* fix: incorrect Synology system explanation

* chore: bump version

Author: helloint

README.md

@@ -21,8 +21,8 @@ npx dual-subtitle
 npx dual-subtitle /path/to/videos
 ```
 
-> Without `npx` (e.g. some Synology setups):  
-> `node /path/to/dual-subtitle/index.js [directory]`
+> If `npx` is not available (e.g. some Synology setups), use `npm exec` instead:  
+> `npm exec dual-subtitle` (optionally add a directory argument).
 
 ### Output
 

README.zh-CN.md

@@ -19,7 +19,7 @@ npx dual-subtitle
 npx dual-subtitle /path/to/videos
 ```
 
-> 若无 `npx`（如部分群晖环境），可用：`node /path/to/dual-subtitle/index.js [目录]`
+> 注：有些环境（比如群晖）如果没有 `npx`，可以用 `npm exec` 代替，对应命令：`npm exec dual-subtitle`（可加目录参数）。
 
 ### 输出文件
 

index.js

@@ -12,6 +12,11 @@ import { t } from './i18n.js';
 const main = async () => {
     const mediaFiles = fs.readdirSync(config.workdir).filter((file) => config.exts.includes(path.extname(file)));
 
+    if (mediaFiles.length === 0) {
+        console.log(t('noVideoFiles'));
+        return;
+    }
+
     for (const file of mediaFiles) {
         console.log(t('processingFile', { file }));
         const subTitles = await analyzeMedia(file);

locales/en.js

@@ -1,4 +1,5 @@
 export default {
+  noVideoFiles: 'No .mp4 or .mkv files found in the current directory.',
   processingFile: ({ file }) => `Processing: ${file}`,
   usingLocalFfprobe: 'Using local ffprobe',
   usingLocalFfmpeg: 'Using local ffmpeg',

locales/zh.js

@@ -1,4 +1,5 @@
 export default {
+  noVideoFiles: '当前目录下未找到 .mp4 或 .mkv 视频文件。',
   processingFile: ({ file }) => `正在处理：${file}`,
   usingLocalFfprobe: '使用本地ffprobe',
   usingLocalFfmpeg: '使用本地ffmpeg',

package-lock.json

@@ -1,6 +1,6 @@
 {
   "name": "dual-subtitle",
-  "version": "0.6.0",
+  "version": "0.6.1",
   "main": "index.js",
   "type": "module",
   "bin": {