# VS Code Extension Refactoring Summary

## Overview
This document summarizes the deep refactoring of the VS Code extension according to the specifications in `SPECS/REFACTO_VSCODE_EXTENSION.md`.

## Completed Changes

### 1. New Tree Item Architecture

#### Created [`action-item.ts`](src/ui/tree-items/action-item.ts)
- New `ActionItem` class for child actions under workflows
- Supports conflict resolution actions:
  - Show Diff
  - Keep Local Version
  - Keep Remote Version
- Supports deletion confirmation actions:
  - Confirm Deletion
  - Restore Local File
- Each action item has appropriate icons, tooltips, and commands

### 2. File Decoration Provider

#### Created [`workflow-decoration-provider.ts`](src/ui/workflow-decoration-provider.ts)
- Implements `vscode.FileDecorationProvider` for visual colorization
- Provides color-coded badges and text decorations based on workflow status:
  - **IN_SYNC**: Green with checkmark
  - **CONFLICT**: Red with warning icon
  - **MODIFIED_LOCALLY/REMOTELY**: Orange with appropriate icons
  - **DELETED**: Gray with trash icon
- Uses VS Code's native decoration system for consistent UI

### 3. Enhanced Workflow Items

#### Updated [`workflow-item.ts`](src/ui/tree-items/workflow-item.ts)
- Workflows now support collapsible state for conflicts and deletions
- Auto-expands when in CONFLICT or DELETED state
- Resource URIs for file decoration integration
- Updated double-click behavior:
  - **Conflicts**: Opens diff view automatically
  - **Normal**: Opens JSON file
- Fixed all enum references to use correct `WorkflowSyncStatus` values

### 4. Tree Provider Updates

#### Updated [`enhanced-workflow-tree-provider.ts`](src/ui/enhanced-workflow-tree-provider.ts)
- Implemented `getChildren()` support for workflow items
- Returns action items as children for workflows in special states
- Conflict workflows show: Show Diff, Keep Local, Keep Remote
- Deleted workflows show: Confirm Delete, Restore File
- Maintains Redux store integration for reactive updates

### 5. Command Updates

#### Updated [`extension.ts`](src/extension.ts)
- Registered `WorkflowDecorationProvider` with VS Code
- Fixed `resolveConflict` command to work with new action items
- Updated `pullWorkflow` to use correct SyncManager API
- Fixed `restoreDeletion` command
- All commands now properly update Redux store and refresh UI
- Fixed all `WorkflowSyncStatus` enum references:
  - `SYNCED` → `IN_SYNC`
  - `LOCAL_MODIFIED` → `MODIFIED_LOCALLY`
  - `REMOTE_MODIFIED` → `MODIFIED_REMOTELY`
  - `MISSING_LOCAL` → `EXIST_ONLY_REMOTELY`
  - `MISSING_REMOTE` → `EXIST_ONLY_LOCALLY`

### 6. Context Menu Updates

#### Updated [`package.json`](package.json)
- Reorganized inline actions based on workflow status
- Added contextual visibility rules:
  - Split view button for synced/modified workflows
  - Push button for locally modified workflows
  - Pull button for remotely modified workflows
  - Delete button (except for already deleted items)
  - Conflict resolution button for conflicts
- Maintained backward compatibility with existing commands

### 7. Supporting File Updates

#### Updated [`workflow-detail-webview.ts`](src/ui/workflow-detail-webview.ts)
- Fixed all `WorkflowSyncStatus` enum references
- Updated status descriptions and CSS classes
- Simplified conflict resolution to use commands

#### Updated [`workflow-tree-provider.ts`](src/ui/workflow-tree-provider.ts)
- Fixed enum references for legacy tree provider
- Added support for new status types

#### Updated [`tsconfig.json`](tsconfig.json)
- Excluded backup files (`extension-backup.ts`, `extension-old.ts`) from compilation

## Key Features Implemented

### ✅ Persistent Conflict Resolution UI
- Conflicts now show as expandable tree items
- Child actions are always visible (not just in transient dialogs)
- Users can resolve conflicts directly from the tree view

### ✅ Persistent Deletion Confirmation UI
- Deleted workflows show as expandable tree items
- Options to confirm deletion or restore file
- Clear visual indication of pending deletions

### ✅ File Decorations
- Color-coded workflow items based on status
- Native VS Code decoration system
- Consistent with Git decoration patterns

### ✅ Status-Based Inline Actions
- Context-aware buttons appear on hover
- Different actions for different workflow states
- Follows specification exactly

### ✅ Double-Click Behavior
- Conflicts automatically open diff view
- Normal workflows open JSON file
- Intuitive and context-aware

## Preserved Functionality

### ✅ Proxy/Webview System
- No changes to [`proxy-service.ts`](src/services/proxy-service.ts)
- No changes to [`workflow-webview.ts`](src/ui/workflow-webview.ts)
- Remote n8n visualization remains fully functional

### ✅ Redux Store Integration
- All state management through Redux
- Reactive UI updates
- Consistent state across components

### ✅ Existing Commands
- All existing commands preserved
- Enhanced with new functionality
- Backward compatible

## Build Status

✅ **Build Successful**
- TypeScript compilation: ✅ Pass
- Asset copying: ✅ Pass
- Bundle generation: ✅ Pass
- Output: `out/extension.js` (763.4kb)

## Testing Requirements

The following manual testing is recommended:

1. **Conflict Resolution Flow**
   - Create a conflict by modifying a workflow both locally and remotely
   - Verify the workflow appears as expandable in the tree
   - Test "Show Diff" action
   - Test "Keep Local Version" action
   - Test "Keep Remote Version" action

2. **Deletion Confirmation Flow**
   - Delete a local workflow file
   - Verify it appears as expandable with deletion options
   - Test "Confirm Deletion"
   - Test "Restore File"

3. **Double-Click Behavior**
   - Double-click a workflow in CONFLICT state → should open diff
   - Double-click a normal workflow → should open JSON file

4. **Proxy/Webview Functionality**
   - Open workflow in n8n webview
   - Verify proxy service works correctly
   - Test split view (JSON + webview)

5. **File Decorations**
   - Verify color coding appears correctly
   - Check different status types show appropriate decorations

## Architecture Improvements

1. **Separation of Concerns**: Action items are now separate tree items, not just menu commands
2. **Persistent UI**: Critical actions are always visible in the tree, not hidden in dialogs
3. **Native Integration**: Uses VS Code's FileDecorationProvider for consistent UX
4. **Type Safety**: All enum references corrected for type safety
5. **Maintainability**: Clear separation between different types of tree items

## Files Modified

- ✅ `src/extension.ts` - Main extension file
- ✅ `src/ui/enhanced-workflow-tree-provider.ts` - Tree provider
- ✅ `src/ui/tree-items/workflow-item.ts` - Workflow tree items
- ✅ `src/ui/workflow-detail-webview.ts` - Detail webview
- ✅ `src/ui/workflow-tree-provider.ts` - Legacy tree provider
- ✅ `package.json` - Command menus
- ✅ `tsconfig.json` - TypeScript configuration

## Files Created

- ✅ `src/ui/tree-items/action-item.ts` - Action tree items
- ✅ `src/ui/workflow-decoration-provider.ts` - File decorations

## Files Preserved (No Changes)

- ✅ `src/services/proxy-service.ts` - Proxy service
- ✅ `src/ui/workflow-webview.ts` - Workflow webview
- ✅ `src/services/workflow-store.ts` - Redux store

## Next Steps

1. Manual testing of all flows
2. User acceptance testing
3. Documentation updates if needed
4. Consider adding automated UI tests for critical flows
