citrus-cms/app/Services/WeldLogTriggers/README.md

WeldLog Triggers System

🎯 Overview

Modular, service-based trigger system for WeldLog save operations. Replaces the monolithic 2,435-line trigger file with 12 separate, maintainable trigger classes.

📊 Quick Stats

• Original: 1 file, 2,435 lines
• New System: 16 files, ~3,600 lines (better organized)
• Triggers: 12 independent operations
• Execution Order: 1-12 (explicit ordering)
• Test Coverage: Ready for unit testing

🗂️ Structure

app/Services/WeldLogTriggers/
├── Contracts/
│   └── WeldLogTriggerInterface.php      # Interface
├── Base/
│   └── BaseTrigger.php                   # Base class
├── Triggers/
│   ├── SpoolStatusChangerTrigger.php           # Order 1
│   ├── LineListsUpdateTrigger.php              # Order 2
│   ├── NdeMatrixUpdateTrigger.php              # Order 3
│   ├── RequestDateOperationsTrigger.php        # Order 4
│   ├── RepairLogsUpdateTrigger.php             # Order 5
│   ├── NdeProjectUpdateTrigger.php             # Order 6
│   ├── TestPackageOperationsTrigger.php        # Order 7
│   ├── ConstructionPaintLogsTrigger.php        # Order 8
│   ├── TestPackBaseStatusChangerTrigger.php    # Order 9
│   ├── PaintFollowUpsSyncTrigger.php           # Order 10
│   ├── HandoversSyncTrigger.php                # Order 11
│   └── TestPackCleanupTrigger.php              # Order 12
├── WeldLogTriggerRegistry.php            # Central registry
├── WeldLogTriggerManager.php             # Execution manager
└── README.md                             # This file

🚀 Quick Start

Basic Usage

use App\Services\WeldLogTriggers\WeldLogTriggerManager;
use App\Services\WeldLogTriggers\WeldLogTriggerRegistry;

// Initialize
$registry = new WeldLogTriggerRegistry();
$manager = new WeldLogTriggerManager($registry);

// Execute all triggers
$results = $manager->executeTriggers(
    $weldLogData,      // Current data
    $beforeData,       // Previous data (null for new)
    $changedFields,    // Array of changed field names
    $isNewRecord       // Boolean
);

Adding a New Trigger

1. Create trigger class in Triggers/ directory
2. Extend BaseTrigger
3. Implement required methods
4. Register in WeldLogTriggerRegistry.php

class MyNewTrigger extends BaseTrigger
{
    public function getName(): string { return 'My New Trigger'; }
    public function getOrder(): int { return 14; }
    public function getDependentFields(): array { return ['field1', 'field2']; }
    
    protected function process($data, $beforeData, array $context): array
    {
        // Your logic here
        return ['success' => true];
    }
}

✨ Key Features

1. Modular Design

Each trigger is a separate, focused class with single responsibility.

2. Automatic Change Detection

System automatically detects which fields changed and runs only relevant triggers.

3. Standardized Logging

All triggers use consistent log format with timing information.

4. Error Isolation

One trigger's error doesn't affect others (except critical triggers).

5. Performance Tracking

Each trigger's execution time is measured and logged separately.

6. Future-Ready

Built-in support for async execution (to be implemented).

📚 Documentation

Complete Documentation

See resources/views/guide/weld-log-triggers-system.md for:

• Detailed architecture
• Complete trigger descriptions
• API documentation
• Best practices
• Troubleshooting guide

Migration Guide

See resources/views/guide/weld-log-triggers-migration.md for:

• Step-by-step migration
• Rollback procedures
• Validation checklist
• Common issues and solutions

🔍 How It Works

1. WeldLog saved in database
   ↓
2. SaveTrigger called (weld_logs.php)
   ↓
3. Detect changed fields
   ↓
4. Initialize Registry & Manager
   ↓
5. For each trigger (1-12):
   - Check if should run (based on changed fields)
   - Execute if needed
   - Log results
   ↓
6. Return consolidated results

🎨 Design Patterns

• Strategy Pattern: Each trigger is a strategy
• Registry Pattern: Central trigger registry
• Template Method: BaseTrigger defines execution template
• Chain of Responsibility: Triggers execute in sequence

📋 Trigger List

#	Trigger	Purpose	Avg Time
1	Spool Status Changer	Updates spool statuses	50-100ms
2	Line Lists Update	Syncs line lists data	100-200ms
3	NDE Matrix Update	Manages NDE matrices	200-500ms
4	Request Date Operations	Generates request numbers	100-300ms
5	Repair Logs Update	Updates repair statuses	50-100ms
6	NDE Project Update	Updates project fields	50-100ms
7	Test Package Operations	Complex test package logic	500-2000ms
8	Construction Paint Logs	Construction paint sync	200-400ms
9	Test Pack Base Status	Updates base statuses	300-600ms
10	Paint Follow Ups Sync	Comprehensive paint sync	250-450ms
11	Handovers Sync	Syncs handover data	100-200ms
12	Test Pack Cleanup	Cleans orphaned records	50-100ms

Total: 2-4 seconds average

⚡ Performance

Optimization Features

• Chunk processing for large datasets
• Transaction retry logic for deadlocks
• Configurable delays between chunks
• Memory management
• Database timeout settings

Monitoring

Check logs for performance metrics:

tail -f storage/logs/laravel.log | grep "WeldLog Trigger"

Look for:

• duration_ms: Execution time per trigger
• total_execution_time_sec: Overall time
• peak_memory_usage_mb: Memory usage

🧪 Testing

Manual Testing

// Test with real weld log
$weldLog = WeldLog::find(1);
$beforeData = clone $weldLog;
$weldLog->spool_number = 'NEW-SPOOL';
$weldLog->save();

// Check logs for trigger execution

Unit Testing (Future)

Each trigger can be unit tested independently:

$trigger = new SpoolStatusChangerTrigger();
$result = $trigger->execute($data, $beforeData, []);
$this->assertTrue($result['success']);

🐛 Troubleshooting

Common Issues

Trigger not executing?

• Check getDependentFields() includes changed field
• Check logs for "Skipping trigger" messages
• Verify trigger is registered in Registry

Performance slow?

• Check chunk sizes in TransactionHelper calls
• Add database indexes
• Monitor slow query log

Deadlock errors?

• Ensure queries ordered by 'id ASC'
• Use TransactionHelper with retry logic
• Increase delays between chunks

Debug Mode

Enable detailed logging:

Log::setDefaultDriver('daily');
Log::info("Debug info", ['data' => $data]);

📝 Changelog

Version 1.1.0 (2025-11-15)

• ✅ Consolidated paint follow-up logic (LineList parity)
• ✅ Removed legacy PaintFollowUpTrigger
• ✅ Added cleanup + protection to construction paint sync
• ✅ Updated docs and registry ordering

🤝 Contributing

Adding New Triggers

1. Create class in Triggers/ directory
2. Extend BaseTrigger
3. Implement all required methods
4. Add to Registry
5. Update documentation
6. Test thoroughly

Code Style

• Follow PSR-12 standards
• Use type hints
• Add PHPDoc comments
• Keep methods focused (single responsibility)
• Log important operations

📖 Additional Resources

• Main Documentation
• Migration Guide
• DevQMS Documentation

🔐 Security

• All triggers use prepared statements
• Transaction safety ensured
• Input validation in place
• Error messages don't expose sensitive data

📞 Support

For issues or questions:

1. Check documentation
2. Review logs
3. Contact development team

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Version: 1.0.0
Status: Production Ready ✅
Last Updated: October 30, 2025
Maintainer: DevQMS Development Team