# Trilium Web Clipper - Manifest V3 Conversion Summary

## ✅ Completed Conversion Tasks

### 1. **Manifest.json Updates**

- ✅ Updated `manifest_version` from 2 to 3
- ✅ Converted `browser_action` to `action`
- ✅ Updated `background.scripts` to `background.service_worker` with ES module support
- ✅ Separated `permissions` and `host_permissions`
- ✅ Added `scripting` permission for dynamic content script injection
- ✅ Updated `content_security_policy` to V3 format
- ✅ Added `web_accessible_resources` with proper structure
- ✅ Removed static `content_scripts` (now using dynamic injection)

### 2. **Background Script Conversion**

- ✅ Converted from background.js to ES module service worker
- ✅ Replaced all `browser.*` API calls with `chrome.*`
- ✅ Converted `browser.browserAction` to `chrome.action`
- ✅ Updated `browser.tabs.executeScript` to `chrome.scripting.executeScript`
- ✅ Added dynamic content script injection with error handling
- ✅ Updated message listener to return `true` for async responses
- ✅ Converted utility and facade imports to ES modules

### 3. **Utils.js ES Module Conversion**

- ✅ Added `export` statements for all functions
- ✅ Maintained backward compatibility

### 4. **Trilium Server Facade Conversion**

- ✅ Replaced all `browser.*` calls with `chrome.*`
- ✅ Added proper ES module exports
- ✅ Updated storage and runtime message APIs

### 5. **Content Script Updates**

- ✅ Replaced all `browser.*` calls with `chrome.*`
- ✅ Added inline utility functions to avoid module dependency issues
- ✅ Maintained compatibility with dynamic library loading

### 6. **Popup and Options Scripts**

- ✅ Updated all `browser.*` API calls to `chrome.*`
- ✅ Updated storage, runtime, and other extension APIs

## 🔧 Key Technical Changes

### Dynamic Content Script Injection

Instead of static registration, content scripts are now injected on-demand:

```javascript
await chrome.scripting.executeScript({
    target: { tabId: activeTab.id },
    files: ['content.js']
});
```

### ES Module Service Worker

Background script now uses ES modules:

```javascript
import { randomString } from './utils.js';
import { triliumServerFacade } from './trilium_server_facade.js';
```

### Chrome APIs Everywhere

All `browser.*` calls replaced with `chrome.*`:

- `browser.tabs` → `chrome.tabs`
- `browser.storage` → `chrome.storage`
- `browser.runtime` → `chrome.runtime`
- `browser.contextMenus` → `chrome.contextMenus`

### Host Permissions Separation

```json
{
  "permissions": ["activeTab", "tabs", "storage", "contextMenus", "scripting"],
  "host_permissions": ["http://*/", "https://*/"]
}
```

## 🧪 Testing Checklist

### Basic Functionality

- [ ] Extension loads without errors
- [ ] Popup opens and displays correctly
- [ ] Options page opens and functions
- [ ] Context menus appear on right-click

### Core Features  

- [ ] Save selection to Trilium
- [ ] Save whole page to Trilium
- [ ] Save screenshots to Trilium
- [ ] Save images to Trilium
- [ ] Save links to Trilium
- [ ] Keyboard shortcuts work

### Integration

- [ ] Trilium Desktop connection works
- [ ] Trilium Server connection works
- [ ] Toast notifications appear
- [ ] Note opening in Trilium works

## 📝 Migration Notes

### Files Changed

- `manifest.json` - Complete V3 conversion
- `background.js` - New ES module service worker
- `utils.js` - ES module exports added
- `trilium_server_facade.js` - Chrome APIs + ES exports
- `content.js` - Chrome APIs + inline utilities
- `popup/popup.js` - Chrome APIs
- `options/options.js` - Chrome APIs

### Files Preserved

- `background-v2.js` - Original V2 background (backup)
- All library files in `/lib/` unchanged
- All UI files (HTML/CSS) unchanged  
- Icons and other assets unchanged

### Breaking Changes

- Browser polyfill no longer needed for Chrome extension
- Content scripts loaded dynamically (better for performance)
- Service worker lifecycle different from persistent background

## 🚀 Next Steps

1. Load extension in Chrome developer mode
2. Test all core functionality
3. Verify Trilium Desktop/Server integration
4. Test keyboard shortcuts
5. Verify error handling and edge cases