import 'dart:convert';
import 'dart:io';

/// Syria Driver Registration Simulation
///
/// Traces the complete flow:
/// 1. Phone OTP Verification
/// 2. Personal + Car Info Input
/// 3. Document Image Capture (license, ID, car docs)
/// 4. AI/OCR Processing (per-document via ai_document.php)
/// 5. Document Upload (uploadSyrianDocs.php → signed URL)
/// 6. Final Submission (register_driver_and_car.php → Gemini bulk AI → DB insert → FCM)
/// 7. Admin Review & Activation
///
/// Run: `dart run siro_driver/lib/controller/auth/syria/registration_simulation.dart`

void main() async {
  print('═══════════════════════════════════════════════════════');
  print('  SYRIA DRIVER REGISTRATION SIMULATION');
  print('═══════════════════════════════════════════════════════');

  const host = 'api-syria.siromove.com';
  const protocol = 'https';
  const driverId = 'DRV2026061912345678';

  // ================================================================
  // STEP 1: Initial Phone OTP Verification
  // ================================================================
  print('\n─── STEP 1: Phone OTP Verification ───');
  const phone = '+963992952235';
  print('  Phone: $phone');

  // Backend: POST /auth/otp/request.php
  //   Payload: { phone_number, purpose: "driver_registration" }
  //   Checks: last_request < 120s → cooldown
  //   Inserts/updates: phone_verification(phone_number, code, is_verified=0, last_request)
  //   Sends SMS with code
  print('  → POST /auth/otp/request.php');
  print('    Request: { phone_number: "$phone", purpose: "driver_registration" }');
  print('    ✅ OTP sent (cooldown 120s applied)');

  // Backend: POST /auth/otp/verify.php
  //   Payload: { phone_number, code, device_token }
  //   Validates: code match, within TTL
  //   Sets: phone_verification.is_verified = 1
  //   Returns: driver_id (new or existing)
  print('  → POST /auth/otp/verify.php');
  print('    Request: { phone_number: "$phone", code: "123456", device_token: "fp_abc123" }');
  print('    ✅ Phone verified, driver_id returned');

  // Check: GET /auth/syria/driver/isPhoneVerified.php
  //   Query: phone_number
  //   Returns: success if is_verified = 1
  print('  → GET /auth/syria/driver/isPhoneVerified.php?phone_number=$phone');
  print('    ✅ Phone is verified, proceeding to registration');

  // ================================================================
  // STEP 2: Personal Information Input (Flutter UI)
  // ================================================================
  print('\n─── STEP 2: Personal Information ───');
  final driverInfo = {
    'first_name': 'أحمد',
    'last_name': 'الأسد',
    'national_number': '04020123456',
    'birthdate': '1990-05-15',
    'phone': phone,
    'driver_license_expiry': '2028-06-01',
  };
  print('  Driver info collected:');
  driverInfo.forEach((k, v) => print('    $k: $v'));

  // ================================================================
  // STEP 3: Car Information Input (Flutter UI)
  // ================================================================
  print('\n─── STEP 3: Car Information ───');
  final carInfo = {
    'car_plate': '155186 درعا',
    'make': 'Hyundai',
    'model': 'H1',
    'year': '2019',
    'color': 'White',
    'color_hex': '#FFFFFF',
    'vehicle_category_id': 1, // 1=Car, 2=Motorcycle, 3=Van/Bus
    'fuel_type_id': 1, // 1=Petrol, 2=Diesel, 3=Electric, 4=Hybrid
    'owner': 'أحمد الأسد',
    'vin': 'KMHSH81XSBU123456',
  };
  print('  Car info collected:');
  carInfo.forEach((k, v) => print('    $k: $v'));

  // ================================================================
  // STEP 4: Document Image Capture & Per-Document AI/OCR
  // ================================================================
  print('\n─── STEP 4: Document Image Capture + AI/OCR ───');
  
  final documents = [
    'id_front_sy',
    'id_back_sy',
    'driving_license_sy_front',
    'driving_license_sy_back',
    'vehicle_license_sy_front',
    'vehicle_license_sy_back',
    'profile_picture',
    'criminal_record',
  ];

  for (final docType in documents) {
    print('  📷 Capturing: $docType');
    print('    → ImagePicker.camera → ImageCropper → FlutterImageCompress');
    print('    → POST /auth/document_syria/ai_document.php');
    print('      Fields: driver_id, type=$docType, image (multipart)');
    print('      AI model: gemini-flash-lite-latest (per-document OCR)');
    
    // Each document type has a unique Gemini prompt
    String expectedExtraction;
    switch (docType) {
      case 'id_front_sy':
        expectedExtraction = '{ "full_name": "أحمد الأسد", "national_number": "04020123456", "dob": "1990-05-15", "address": "دمشق" }';
        break;
      case 'id_back_sy':
        expectedExtraction = '{ "governorate": "دمشق", "address": "المزة", "gender": "Male", "issue_date": "2010-03-01" }';
        break;
      case 'driving_license_sy_front':
        expectedExtraction = '{ "name_arabic": "أحمد الأسد", "birth_place": "دمشق", "birth_year": "1990", "national_number": "04020123456", "civil_registry": "دمشق 3", "blood_type": "A+" }';
        break;
      case 'driving_license_sy_back':
        expectedExtraction = '{ "issue_date": "2018-06-15", "expiry_date": "2028-06-15", "license_number": "987654", "license_category": "D1" }';
        break;
      case 'vehicle_license_sy_front':
        expectedExtraction = '{ "car_plate": "155186 درعا", "owner": "أحمد الأسد", "vin": "KMHSH81XSBU123456", "color": "White", "color_hex": "#FFFFFF", "issue_date": "2019-03-10", "inspection_date": "2025-03-10" }';
        break;
      case 'vehicle_license_sy_back':
        expectedExtraction = '{ "make": "Hyundai", "model": "H1", "year": "2019", "fuel": "Petrol", "chassis": "KMHSH81XSBU123456" }';
        break;
      default:
        expectedExtraction = '{ "status": "success" }';
    }
    print('    ✅ AI extraction: $expectedExtraction');
    
    print('    ✅ Image URL: $protocol://$host/siro/auth/uploads/documents/driver_${docType}_$driverId.jpg');
  }

  // ================================================================
  // STEP 5: Document Upload to Secure Storage
  // ================================================================
  print('\n─── STEP 5: Document Upload (Secure Signed URLs) ───');
  
  final docUrls = <String, String>{};
  const uploadDocTypes = [
    'driver_license_front',
    'driver_license_back',
    'car_license_front',
    'car_license_back',
  ];



  for (final docType in uploadDocTypes) {
    print('  📤 Uploading: $docType');
    print('    → POST /auth/syria/uploadSyrianDocs.php');
    print('      Fields: driver_id=$driverId, doc_type=$docType, file (multipart)');
    print('      File stored: private_uploads/<hash>/<driverId>__${docType}.jpg');
    print('      MIME validation: image/jpeg, image/png, image/webp');
    print('      Max size: 5 MB');

    final signedUrl = '$protocol://$host/siro/secure_image.php'
        '?driver_id=$driverId'
        '&doc_type=$docType'
        '&ext=jpg'
        '&expires=1780000000'
        '&signature=abc123def456';
    
    docUrls[docType] = signedUrl;
    print('    ✅ Signed URL: $signedUrl');
    print('      TTL: 2 days (172800s)');
  }

  // ================================================================
  // STEP 6: Final Registration Submission
  // ================================================================
  print('\n─── STEP 6: Final Registration (register_driver_and_car.php) ───');
  print('  → POST /auth/syria/driver/register_driver_and_car.php');
  print('  This is the MAIN orchestrator. It does:');
  print('    1. Phone number normalization (Syria/Jordan/Egypt logic)');
  print('    2. Encrypt sensitive fields (phone, email, name, address, etc.)');
  print('    3. HMAC-based password derivation from id|phone|national_number');
  print('    4. Check for duplicate phone/email');
  print('    5. Insert into `driver` table with status="yet"');
  print('    6. Insert into `CarRegistration` with vehicle_category_id + fuel_type_id');
  print('    7. Insert document links into `driver_documents` table');
  print('    8. Store profile_picture into `imageProfileCaptain`');
  print('    9. AI BULK ANALYSIS via Gemini Flash Lite (all docs together)');
  print('    10. Send FCM notification → topic: new_driver_registration');
  print('    11. Return { status: "success", driverID, carRegID, documents }');

  // Show the full payload
  print('\n  📦 Request payload (multipart):');
  print('    Driver fields:');
  for (final f in ['id', 'first_name', 'last_name', 'phone', 'national_number', 'birthdate', 'status', 'gender', 'email']) {
    print('      $f: ${f == 'id' ? driverId : driverInfo[f] ?? carInfo[f] ?? '—'}');
  }
  print('    Car fields:');
  for (final f in ['vin', 'car_plate', 'make', 'model', 'year', 'color', 'color_hex', 'owner', 'vehicle_category_id', 'fuel_type_id']) {
    print('      $f: ${carInfo[f] ?? '—'}');
  }
  print('    Document URLs:');
  docUrls.forEach((k, v) => print('      $k: ${v.substring(0, 60)}...'));

  // Simulate the transaction
  print('\n  🔄 Transaction: BEGIN');
  print('  🔍 Check duplicate: SELECT id FROM driver WHERE phone = :p OR email = :e');
  print('  ✅ No duplicates found');
  print('  📝 INSERT INTO driver (...) VALUES (...)');
  print('    → driverID: $driverId');
  print('  📝 INSERT INTO CarRegistration (...) VALUES (...)');
  print('    → carRegID: 1');
  print('  📝 INSERT INTO driver_documents (8 rows)');
  print('  📝 INSERT INTO imageProfileCaptain (1 row)');
  print('  🔄 Transaction: COMMIT');
  print('  ✅ Registration committed');

  // AI Bulk Analysis
  print('\n  🤖 AI Bulk Analysis (Gemini Flash Lite):');
  print('    → Prompt includes all 8 document images + schema instructions');
  print('    → SSRF protection: only ALLOWED_UPLOAD_HOST URLs fetched');
  print('    → Extracted fields override user input:');
  print('      - full_name → first_name / last_name');
  print('      - national_number, dob, address, governorate → site');
  print('      - gender, license dates, car details');
  print('    ↳ If AI status="failure" → registration ABORTED with error message');
  print('    ✅ AI verification passed');

  // FCM Notification
  print('\n  📲 FCM Notification:');
  print('    → POST /ride/firebase/send_fcm.php');
  print('    → Topic: new_driver_registration');
  print('    → Title: "تسجيل سائق جديد"');
  print('    → Body: "سائق جديد (أحمد الأسد) سجل برقم ID: $driverId وهو بانتظار المراجعة والتفعيل."');
  print('    ✅ Admin notified');

  // Response
  print('\n  📤 Response:');
  print('    {');
  print('      "status": "success",');
  print('      "driverID": "$driverId",');
  print('      "carRegID": 1,');
  print('      "documents": {');
  docUrls.forEach((k, v) => print('        "$k": "$v",'));
  print('      }');
  print('    }');

  // ================================================================
  // STEP 7: Admin Review & Activation
  // ================================================================
  print('\n─── STEP 7: Admin Review & Activation ───');
  
  // Admin fetches pending drivers
  print('  🔍 Admin fetches pending drivers:');
  print('    → GET /auth/syria/driver/drivers_pending_list.php');
  print('      Decrypts: phone, first_name, last_name');
  print('      Returns: [{ id: "$driverId", first_name: "أحمد", last_name: "الأسد", phone: "$phone" }]');
  print('    ✅ Driver appears in pending list (status != "active")');

  // Admin views details
  print('\n  📋 Admin views driver details:');
  print('    → GET /auth/syria/driver/driver_details.php?driver_id=$driverId');
  print('      Returns: driver row + car registration + document links');
  print('    ✅ Admin reviews all documents');

  // Admin activates driver
  print('\n  ✅ Admin approves & activates:');
  print('    → POST /Admin/Staff/activate.php');
  print('      Auth: JWT (role=super_admin or admin)');
  print('      Payload: { user_id: "$driverId", type: "admin" }');
  print('      SQL: UPDATE driver SET status = "active" WHERE id = "$driverId"');
  
  // Check driver_assurance table (references in migration schema)
  print('\n  ℹ️  driver_assurance table (optional):');
  print('     May store health_insurance_provider + assured status');
  print('     Linked via driver_id (encrypted columns)');

  // Final driver state
  print('\n  📊 Final driver state in DB:');
  print('    driver.phone = <encrypted>$phone');
  print('    driver.status = "active"');
  print('    driver.is_verified = 1 (via phone_verification)');
  print('    CarRegistration.status = "yet"');
  print('    driver_documents: 8 rows linked to driverID');

  // ================================================================
  // SUMMARY
  // ================================================================
  print('\n═══════════════════════════════════════════════════════');
  print('  REGISTRATION FLOW COMPLETE');
  print('═══════════════════════════════════════════════════════');
  print('  Files involved:');
  print('    App (Flutter):');
  print('      - registration_controller.dart (multi-step UI)');
  print('      - register_captin_controller.dart (basic signup)');
  print('      - opt_token_controller.dart (OTP send/verify)');
  print('      - ml_google_doc.dart (phone OCR scanner)');
  print('    Backend (PHP):');
  print('      - /auth/otp/request.php + verify.php');
  print('      - /auth/syria/driver/isPhoneVerified.php');
  print('      - /auth/document_syria/ai_document.php');
  print('      - /auth/syria/uploadSyrianDocs.php');
  print('      - /auth/syria/driver/register_driver_and_car.php');
  print('      - /auth/syria/driver/drivers_pending_list.php');
  print('      - /auth/syria/driver/driver_details.php');
  print('      - /serviceapp/getDriversWaitingActive.php');
  print('      - /Admin/Staff/activate.php');
  print('    Schema:');
  print('      - schema_primary.sql (driver, CarRegistration, driver_documents,');
  print('                          phone_verification, imageProfileCaptain,');
  print('                          driver_gifts, driver_assurance)');
  print('═══════════════════════════════════════════════════════');
}