Updating Flutter Plugin Project Structure

Update Summary

Replacing HarmonyOS project structure with module structure in the ohos directory of Flutter plugins
Consolidating all referenced HAR files under ohos/har
Removing outdated module directories in OHOS plugins after update

Update Procedure

Demonstrated using integration_test from flutter_flutter:

1. Restructure integration_test/ohos from project to module format

```sh
cd flutter_flutter/packages/integration_test
mv ohos/ohos ./ohos2  # Backup original structure
rm -rf ohos           # Remove old structure
mv ohos2 ohos          # Rename to standard module format
cd example
flutter pub get        # Refresh dependencies
flutter build hap --debug # Verify build
```

Note: Running flutter run at this stage will fail until configuration updates are completed.

2. Configuration Updates

2.1 Update integration_test/ohos/oh-package.json5

Before:

```json
{
  "name": "ohos",
  ...
}
```

After (match plugin name from pubspec.yaml):

```json
{
  "name": "integration_test",
  "license": "Apache-2.0",
  "dependencies": {
    "@ohos/flutter_ohos": "file:har/flutter.har"
  }
}
```

2.2 Update integration_test/ohos/src/main/module.json5

Before:

```json
{
  "module": {
    "name": "ohos",
    ...
  }
}




**After**:


    ```json
    {
      "module": {
        "name": "integration_test",
        ...
      }
    }
    ```



#### 2.3 Update integration_test/ohos/hvigorfile.ts
**Before**:


    ```typescript
    import { appTasks } from '@ohos/hvigor-ohos-plugin';
    export default {
        system: appTasks,
        plugins:[]
    }
    ```



**After**:


    ```typescript
    export { harTasks } from '@ohos/hvigor-ohos-plugin';
    ```



## Verification Steps

1. Open `integration_test/example` in DevEco Studio and configure signing
2. Run the example:


    ```sh
    cd integration_test/example
    flutter run -d $DEVICE --debug
    ```



### Critical HAR Reference Configuration
HAR files are now located in `ohos/har`

#### Update example/ohos/oh-package.json5


    ```json
    {
      "dependencies": {
        "@ohos/flutter_ohos": "file:./har/flutter.har"
      },
      "overrides": {
        "@ohos/flutter_ohos": "file:./har/flutter.har"
      }
    }
    ```



#### Update example/ohos/entry/oh-package.json5
**Before**:


    ```json
    {
      "dependencies": {
        "@ohos/integration_test": "file:./har/integration_test.har"
      }
    }
    ```



**After**:


    ```json
    {
      "dependencies": {
        "integration_test": "file:../har/integration_test.har"
      }
    }
    ```



## Troubleshooting Common Issues

### 1. ENOENT: No such file or directory
    **Error**:


    ```log
    hvigor ERROR: ENOENT: no such file or directory, stat 
    'xxx/flutter_flutter/packages/integration_test/ohos/build/default/cache/default/default@packageHar/ohos/oh_modules/@ohos/flutter_ohos'
    ```



**Solution**:  
Manually delete the path mentioned in the error message.

### 2. Operation not permitted (symlink error)
**Error**:


    ```log
    hvigor ERROR: ENOENT: operation not permitted, symlink
    'xxx/webview_flutter_ohos/ohos/webview_flutter/oh_modules/.ohpm/@ohos+flutter_ohos@file+libs+flutter.har/oh_modules/@ohos/flutter_ohos' -> 
    'xxx/webview_flutter_ohos/ohos/build/default/cache/default/default@PackageHar/webview_flutter/oh_modules/@ohos/flutter_ohos'
    ```



**Solution**:  
Remove legacy directories from previous structure:


    ```sh
    rm -rf flutter_packages/packages/webview_flutter_ohos/ohos/webview_flutter
    rm -rf flutter_packages/packages/path_provider_ohos/ohos/path_provider
    rm -rf flutter_packages/packages/file_selector_ohos/ohos/FileSelector
    ```