# GUI Failure Diagnostics Implementation Summary

## Overview
Implemented comprehensive diagnostic reporting for all GUI launch failures. When the GUI fails to launch and falls back to CMD/TUI mode, a detailed diagnostic report is automatically generated and opened in Notepad.

## Implementation

### New Module: `Helper/GUIFailureDiagnostics.ps1`

**Functions**:
1. **`New-GUIFailureReport`**: Creates a comprehensive diagnostic report with:
   - Quick summary (for easy typing if user can't paste full report)
   - System information (OS, PowerShell version, .NET version, etc.)
   - Failure details (reason, error messages, stack traces)
   - WPF assembly availability checks
   - Threading mode verification
   - File system checks (verifies all required files exist)
   - .NET Framework information
   - Specific recommendations based on failure point

2. **`Show-GUIFailureReport`**: Generates and displays the report in Notepad automatically

### Integration Points

All GUI failure scenarios in `MiracleBoot.ps1` now generate diagnostic reports:

1. **WPF Assemblies Not Available** (Line ~470)
   - Failure Point: `WPF_Assemblies`
   - Triggers when PresentationFramework, System.Windows.Forms, or System.Drawing fail to load

2. **Readiness Gate Failed** (Line ~485)
   - Failure Point: `Readiness_Gate`
   - Triggers when pre-launch validation detects blockers

3. **GUI Module Load Failed** (Line ~525)
   - Failure Point: `GUI_Module_Load`
   - Triggers when Helper\WinRepairGUI.ps1 fails to load

4. **Start-GUI Function Not Found** (Line ~532)
   - Failure Point: `Start_GUI_Function`
   - Triggers when Start-GUI function is missing after module load

5. **GUI Module Validation Failed** (Line ~548)
   - Failure Point: `GUI_Module_Validation`
   - Triggers when Start-GUI command validation fails

6. **GUI Window Launch Failed** (Line ~580)
   - Failure Point: `GUI_Window_Launch`
   - Triggers when Start-GUI() call fails

## Report Contents

### Quick Summary Section
- **Purpose**: Allows users to quickly type a summary if they can't paste the full report
- **Contents**:
  - Failure reason
  - Failure point
  - Error message (if available)

### System Information
- Operating System details (Caption, Version, Build, Architecture)
- PowerShell version and edition
- CLR version
- System drive, computer name, user
- Environment type (FullOS, WinRE, WinPE)

### Failure Details
- Failure reason
- Failure point
- Exception message
- Inner exception (if available)
- Error details
- Stack trace

### Diagnostic Checks
- **WPF Assembly Availability**: Tests all required and optional WPF assemblies
- **Threading Mode**: Verifies STA mode (required for WPF)
- **File System Checks**: Verifies all required files exist and are accessible
- **.NET Framework**: Checks .NET CLR and Framework versions

### Recommendations
- Specific recommendations based on failure point
- General troubleshooting steps
- Instructions to use TUI mode as fallback

## User Experience

### Before
- GUI fails silently or with minimal error message
- User has no way to report the issue effectively
- Support has no diagnostic information

### After
- Notepad automatically opens with comprehensive diagnostic report
- Report includes quick summary for easy typing
- Full diagnostic information for support investigation
- Specific recommendations for each failure type
- Report saved to `%TEMP%\MiracleBoot_GUI_Failure_Report_YYYYMMDD_HHMMSS.txt`

## Report File Location

Reports are saved to:
```
%TEMP%\MiracleBoot_GUI_Failure_Report_YYYYMMDD_HHMMSS.txt
```

Example:
```
C:\Users\Username\AppData\Local\Temp\MiracleBoot_GUI_Failure_Report_20260108_143022.txt
```

## Quick Summary Format

The quick summary section is formatted for easy typing:

```
GUI failed to launch. Reason: [Failure Reason]
Failure point: [Failure Point]
Error: [Error Message]
```

Example:
```
GUI failed to launch. Reason: WPF assemblies not available
Failure point: WPF_Assemblies
Error: Could not load file or assembly 'PresentationFramework'
```

## Failure Points and Recommendations

### WPF_Assemblies
**Recommendations**:
1. Install or repair .NET Framework 4.8 or later
2. Run Windows Update to ensure all .NET components are current
3. Try running: sfc /scannow (as Administrator)

### Readiness_Gate
**Recommendations**:
1. Review the blockers listed above and fix syntax errors
2. Check Helper\WinRepairGUI.ps1 for syntax issues
3. Run: Get-Content Helper\WinRepairGUI.ps1 | Select-String -Pattern 'ParserError|SyntaxError'

### GUI_Module_Load
**Recommendations**:
1. Check Helper\WinRepairGUI.ps1 for syntax errors
2. Verify all required modules are present
3. Check PowerShell execution policy: Get-ExecutionPolicy

### Start_GUI_Function
**Recommendations**:
1. Verify Helper\WinRepairGUI.ps1 contains Start-GUI function
2. Check for syntax errors preventing function definition

### GUI_Window_Launch
**Recommendations**:
1. Check if another instance of the GUI is already running
2. Verify XAML is valid (check Helper\WinRepairGUI.ps1 XAML section)
3. Check Windows Event Viewer for .NET errors
4. Try running as Administrator

## Files Modified

1. **`Helper/GUIFailureDiagnostics.ps1`** - NEW: Diagnostic report generation module
2. **`MiracleBoot.ps1`** - Enhanced: Integrated diagnostic reports at all GUI failure points

## Testing Recommendations

1. Test with missing .NET Framework (should trigger WPF_Assemblies failure)
2. Test with syntax errors in WinRepairGUI.ps1 (should trigger GUI_Module_Load failure)
3. Test with missing Start-GUI function (should trigger Start_GUI_Function failure)
4. Test with invalid XAML (should trigger GUI_Window_Launch failure)
5. Verify reports open correctly in Notepad
6. Verify quick summary is easy to type
7. Verify all diagnostic information is captured

## Support Workflow

When a user reports a GUI launch failure:

1. Ask them to check if Notepad opened with a diagnostic report
2. If yes, ask them to:
   - Copy the full report and send it, OR
   - Type the "Quick Summary" section if they can't paste
3. Use the report to identify:
   - Failure point
   - System configuration
   - Missing components
   - Specific error messages
4. Provide targeted recommendations based on failure point

## Benefits

1. **User-Friendly**: Automatic Notepad popup with clear information
2. **Support-Friendly**: Comprehensive diagnostic data for investigation
3. **Quick Reporting**: Short summary for users who can't paste full report
4. **Actionable**: Specific recommendations for each failure type
5. **Complete**: All system and error information in one place
