<?php

namespace App\Http\Controllers;

use App\Models\Passenger;
use App\Models\PassengerToken;
use App\Models\Driver;
use App\Models\DriverToken;
use App\Models\CarRegistration;
use App\Models\DriverDocument;
use App\Services\LegacyEncryption;
use Illuminate\Http\JsonResponse;
use Illuminate\Http\Request;
use Illuminate\Support\Facades\DB;
use Illuminate\Support\Facades\Hash;
use Illuminate\Support\Facades\Cache;
use Illuminate\Support\Str;
use Firebase\JWT\JWT;
use Firebase\JWT\Key;

class AuthController extends Controller
{
    protected $encryption;

    public function __construct(LegacyEncryption $encryption)
    {
        $this->encryption = $encryption;
    }

    // ══════════════════════════════════════════════
    // PASSENGER LOGIN & REGISTRATION
    // ══════════════════════════════════════════════

    public function passengerLogin(Request $request): JsonResponse
    {
        $request->validate([
            'phone' => 'required|string',
            'password' => 'required|string',
            'fingerprint' => 'required|string',
            'fcm_token' => 'required|string',
        ]);

        $phone = $request->input('phone');
        $password = $request->input('password');
        $fingerprint = $request->input('fingerprint');
        $fcmToken = $request->input('fcm_token');

        $rawPhone = $phone;
        $localPhone = '0' . substr($phone, 3);
        $encRawPhone = $this->encryption->encrypt($rawPhone);
        $encLocalPhone = $this->encryption->encrypt($localPhone);

        $passenger = Passenger::active()
            ->whereIn('phone', [$rawPhone, $localPhone, $encRawPhone, $encLocalPhone])
            ->first();

        if (!$passenger) {
            return $this->failure('Invalid credentials');
        }

        $storedPassword = $passenger->password;
        if (!password_verify($password, $storedPassword) && 
            !hash_equals($storedPassword, hash_hmac('sha256', $password, config('intaleq.jwt_secret')))) {
            return $this->failure('Invalid credentials');
        }

        $passengerToken = PassengerToken::where('passengerID', $passenger->id)->first();
        $encryptedFcm = $this->encryption->encrypt($fcmToken);
        if ($passengerToken) {
            $passengerToken->update([
                'token' => $encryptedFcm,
                'fingerPrint' => $fingerprint,
            ]);
        } else {
            PassengerToken::create([
                'token' => $encryptedFcm,
                'passengerID' => $passenger->id,
                'fingerPrint' => $fingerprint,
            ]);
        }

        if (empty($passenger->api_key)) {
            $this->generateApiKeys($passenger);
        }

        $jwt = $this->createJwt($passenger->id, 'passenger', $fingerprint, 3600); // 1 Hour

        return $this->success([
            'token' => $jwt,
            'expires_in' => 3600,
            'user_id' => $passenger->id,
            'api_key' => $passenger->api_key,
            'api_secret' => $passenger->api_secret,
        ]);
    }

    public function passengerRegister(Request $request): JsonResponse
    {
        $request->validate([
            'phone' => 'required|string',
            'email' => 'required|email',
            'first_name' => 'required|string',
            'last_name' => 'required|string',
            'fingerprint' => 'nullable|string',
            'fcm_token' => 'nullable|string',
        ]);

        $phone = $request->input('phone');
        $encryptedPhone = $this->encryption->encrypt($phone);

        if (Passenger::where('phone', $encryptedPhone)->exists()) {
            return $this->failure('Phone number already registered');
        }

        $passengerId = (string) mt_rand(1000000000, 9999999999) . mt_rand(100000000, 999999999);

        $passenger = Passenger::create([
            'id' => $passengerId,
            'phone' => $encryptedPhone,
            'email' => $this->encryption->encrypt($request->input('email')),
            'password' => password_hash($request->input('password', '123456'), PASSWORD_BCRYPT),
            'first_name' => $this->encryption->encrypt($request->input('first_name')),
            'last_name' => $this->encryption->encrypt($request->input('last_name')),
            'gender' => $this->encryption->encrypt($request->input('gender', 'male')),
            'birthdate' => $this->encryption->encrypt($request->input('birthdate', '2000-01-01')),
            'site' => $request->input('site', 'Syria'),
        ]);

        if ($request->has('fcm_token')) {
            PassengerToken::create([
                'token' => $this->encryption->encrypt($request->input('fcm_token')),
                'passengerID' => $passengerId,
                'fingerPrint' => $request->input('fingerprint', 'unknown'),
            ]);
        }

        $this->generateApiKeys($passenger);
        $jwt = $this->createJwt($passengerId, 'passenger', $request->input('fingerprint', 'unknown'), 3600);

        return $this->success([
            'token' => $jwt,
            'expires_in' => 3600,
            'user_id' => $passengerId,
            'api_key' => $passenger->api_key,
            'api_secret' => $passenger->api_secret,
        ], 201);
    }

    public function driverRegister(Request $request): JsonResponse
    {
        // 1. Validate Required Driver Fields
        $request->validate([
            'phone' => 'required|string',
            'password' => 'required|string',
            'first_name' => 'required|string',
            'last_name' => 'required|string',
            // Car Fields
            'vin' => 'required|string',
            'car_plate' => 'required|string',
            'make' => 'required|string',
            'model' => 'required|string',
            'year' => 'required|string',
            'expiration_date' => 'required|string',
            'color' => 'required|string',
            'owner' => 'required|string',
            'color_hex' => 'required|string',
            'fuel' => 'required|string',
            // Documents
            'driver_license_front' => 'required|url',
            'driver_license_back' => 'required|url',
            'car_license_front' => 'required|url',
            'car_license_back' => 'required|url',
        ]);

        $data = $request->all();

        // 2. Format Phone (Syrian Logic)
        $phone = $data['phone'];
        $phone = preg_replace('/[ \-\(\)\+]/', '', $phone);
        $phone = trim($phone);

        if (strpos($phone, '00963') === 0) $phone = substr($phone, 2);
        elseif (strpos($phone, '0963') === 0) $phone = substr($phone, 1);

        if (strpos($phone, '96309') === 0) $phone = '9639' . substr($phone, 5);
        elseif (strpos($phone, '9630') === 0) $phone = '9639' . substr($phone, 4);
        elseif (strpos($phone, '09') === 0) $phone = '963' . substr($phone, 1);
        elseif (strpos($phone, '9') === 0 && strlen($phone) == 9) $phone = '963' . $phone;
        elseif (strpos($phone, '0') === 0 && strlen($phone) == 10) $phone = '963' . substr($phone, 1);
        
        if (strpos($phone, '963') === 0 && strlen($phone) > 3) {
            if (strpos($phone, '9639') !== 0) {
                $phone = '9639' . substr($phone, 3);
            }
        }
        $data['phone'] = $phone;

        // 3. Format Birthdate
        if (!empty($data['birthdate'])) {
            $data['birthdate'] = trim($data['birthdate']) . '-01-01';
        } else {
            $data['birthdate'] = '1970-01-01';
        }

        // 4. Generate ID & Email
        if (empty($data['id'])) {
            $data['id'] = 'DRV' . date('YmdHis') . random_int(1000, 9999);
        }
        if (empty($data['email'])) {
            $data['email'] = $data['phone'] . '@intaleqapp.com';
        }

        // 5. Encrypt Driver Fields
        $toEncryptDriver = [
            'phone', 'email', 'first_name', 'last_name', 'name_arabic', 'gender',
            'national_number', 'address', 'site', 'fullNameMaritial', 'birthdate'
        ];
        foreach ($toEncryptDriver as $f) {
            if (!empty($data[$f]) && $data[$f] !== 'Not specified') {
                $data[$f] = $this->encryption->encrypt($data[$f]);
            } else {
                $data[$f] = null;
            }
        }

        // 6. Encrypt Car Fields
        $car = [
            'vin' => $this->encryption->encrypt($request->input('vin')),
            'car_plate' => $this->encryption->encrypt($request->input('car_plate')),
            'make' => $request->input('make'),
            'model' => $request->input('model'),
            'year' => $request->input('year'),
            'expiration_date' => $request->input('expiration_date'),
            'color' => $request->input('color'),
            'owner' => $this->encryption->encrypt($request->input('owner')),
            'color_hex' => $request->input('color_hex'),
            'fuel' => $request->input('fuel'),
            'vehicle_category_id' => $request->input('vehicle_category_id', 1),
            'fuel_type_id' => $request->input('fuel_type_id', 1),
        ];

        // 7. Hash Password (HMAC + password_hash)
        $pepper = config('intaleq.hmac_secret', env('SECRET_KEY_HMAC'));
        $baseParts = [
            $data['id'],
            $phone, // Original formatted phone
        ];
        if (!empty($request->input('national_number')) && $request->input('national_number') !== 'Not specified') {
            $baseParts[] = $request->input('national_number');
        } elseif (!empty($request->input('birthdate'))) {
            $year = substr($request->input('birthdate'), 0, 4);
            if (preg_match('/^\d{4}$/', $year)) {
                $baseParts[] = $year;
            }
        }
        $baseString = implode('|', $baseParts);
        $rawSecret = hash_hmac('sha256', $baseString, $pepper, true);
        $pwdHashed = password_hash($rawSecret, PASSWORD_DEFAULT);

        // 8. Check Duplicates
        $dup = DB::connection('primary')->table('driver')
            ->where('phone', $data['phone'])
            ->orWhere('email', $data['email'])
            ->exists();

        if ($dup) {
            return response()->json(['status' => 'Failure', 'data' => 'Phone or email already registered.']);
        }

        DB::connection('primary')->beginTransaction();
        try {
            // 9. Insert Driver
            DB::connection('primary')->table('driver')->insert([
                'id' => $data['id'],
                'phone' => $data['phone'],
                'email' => $data['email'],
                'password' => $pwdHashed,
                'gender' => $data['gender'] ?? 'Male',
                'license_type' => $request->input('license_type', 'yet'),
                'national_number' => $data['national_number'],
                'name_arabic' => $data['name_arabic'],
                'issue_date' => $request->input('issue_date', '2020-01-01'),
                'expiry_date' => $request->input('expiry_date', 'yet'),
                'license_categories' => $request->input('license_categories', 'B'),
                'address' => $data['address'],
                'licenseIssueDate' => $request->input('licenseIssueDate', '2020-01-01'),
                'status' => $request->input('status', 'yet'),
                'birthdate' => $data['birthdate'],
                'site' => $data['site'] ?? 'demascus',
                'first_name' => $data['first_name'],
                'last_name' => $data['last_name'],
                'accountBank' => 'yet',
                'bankCode' => 'yet',
                'employmentType' => $request->input('employmentType', 'yet'),
                'maritalStatus' => $request->input('maritalStatus', 'yet'),
                'fullNameMaritial' => $data['fullNameMaritial'] ?? 'yet',
                'expirationDate' => $request->input('expirationDate', 'yet'),
                'created_at' => now(),
                'updated_at' => now(),
            ]);

            // 10. Insert Car Registration
            $isDefault = DB::connection('primary')->table('CarRegistration')
                ->where('driverID', $data['id'])->exists() ? 0 : 1;

            $carRegId = DB::connection('primary')->table('CarRegistration')->insertGetId([
                'driverID' => $data['id'],
                'vin' => $car['vin'],
                'car_plate' => $car['car_plate'],
                'make' => $car['make'],
                'model' => $car['model'],
                'year' => $car['year'],
                'expiration_date' => $car['expiration_date'],
                'color' => $car['color'],
                'owner' => $car['owner'],
                'color_hex' => $car['color_hex'],
                'fuel' => $car['fuel'],
                'vehicle_category_id' => $car['vehicle_category_id'],
                'fuel_type_id' => $car['fuel_type_id'],
                'isDefault' => $isDefault,
                'status' => 'yet',
                'created_at' => now(),
            ]);

            // 11. Insert Documents
            $docKeys = [
                'driver_license_front', 'driver_license_back',
                'car_license_front', 'car_license_back'
            ];
            $docUrls = [];
            foreach ($docKeys as $k) {
                $url = $request->input($k);
                $docUrls[$k] = $url;
                $name = basename(parse_url($url, PHP_URL_PATH) ?? '');
                if ($name === '') { $name = $k . '_' . time() . '.jpg'; }

                DB::connection('primary')->table('driver_documents')->insert([
                    'driverID' => $data['id'],
                    'doc_type' => $k,
                    'image_name' => $name,
                    'link' => $url,
                    'upload_date' => now(),
                ]);
            }

            DB::connection('primary')->commit();

            // 12. FCM Notification to Admin (Fire and Forget)
            try {
                $fcm = resolve(\App\Services\FcmService::class);
                $driverFullName = $request->input('first_name') . ' ' . $request->input('last_name');
                $fcm->sendToTopic(
                    'service',
                    'تسجيل سائق جديد',
                    "سائق جديد ($driverFullName) سجل برقم ID: {$data['id']} وهو بانتظار المراجعة والتفعيل.",
                    ['category' => 'new_driver_registration']
                );
            } catch (\Exception $e) {
                \Illuminate\Support\Facades\Log::error("FCM Admin notification failed: " . $e->getMessage());
            }

            return response()->json([
                'status' => 'success',
                'driverID' => $data['id'],
                'carRegID' => $carRegId,
                'documents' => $docUrls
            ]);

        } catch (\Exception $e) {
            DB::connection('primary')->rollBack();
            return response()->json(['status' => 'Failure', 'message' => 'Registration failed: ' . $e->getMessage()]);
        }
    }

    // ══════════════════════════════════════════════
    // DRIVER LOGIN
    // ══════════════════════════════════════════════

    public function driverLogin(Request $request): JsonResponse
    {
        $request->validate([
            'email' => 'required|string',
            'password' => 'required|string',
        ]);

        $email = $request->input('email');
        $searchEmail = (str_contains($email, '+') || str_contains($email, '/')) ? $email : $this->encryption->encrypt($email);

        $row = DB::connection('primary')
            ->table('driver as d')
            ->leftJoin('phone_verification', 'phone_verification.phone_number', '=', 'd.phone')
            ->leftJoin('invites', 'invites.inviterDriverPhone', '=', 'd.phone')
            ->leftJoin('shamCash', 'shamCash.driver_id', '=', 'd.id')
            ->leftJoin('CarRegistration', 'CarRegistration.driverID', '=', 'd.id')
            ->leftJoin('captain_bank', 'captain_bank.captain_id', '=', 'd.id')
            ->select([
                'd.id', 'd.phone', 'd.email', 'd.gender', 'd.status',
                'd.first_name', 'd.last_name', 'd.password',
                'd.name_arabic',
                'phone_verification.verified as is_verified',
                'invites.isInstall',
                'shamCash.is_claimed',
                'CarRegistration.make', 'CarRegistration.model', 'CarRegistration.year',
                'captain_bank.bankCode', 'captain_bank.accountBank',
            ])
            ->where('d.email', $searchEmail)
            ->first();

        if (!$row) {
            return response()->json(['status' => 'failure', 'message' => 'Invalid credentials']);
        }

        $driver = (array) $row;
        
        // Verify password
        if (!password_verify($request->input('password'), $driver['password'])) {
            return response()->json(['status' => 'failure', 'message' => 'Invalid credentials']);
        }

        // Decrypt necessary fields
        $fieldsToDecrypt = ['email', 'phone', 'first_name', 'last_name', 'gender', 'name_arabic'];
        foreach ($fieldsToDecrypt as $field) {
            if (!empty($driver[$field])) {
                $dec = $this->encryption->decrypt($driver[$field]);
                if ($dec) $driver[$field] = $dec;
            }
        }
        unset($driver['password']); // don't send password

        // Default values for null fields
        $driver['is_verified'] = $driver['is_verified'] ?? 0;
        $driver['isInstall'] = $driver['isInstall'] ?? 0;
        $driver['is_claimed'] = $driver['is_claimed'] ?? 0;
        $driver['bankCode'] = $driver['bankCode'] ?? '';
        $driver['accountBank'] = $driver['accountBank'] ?? '';
        $driver['make'] = $driver['make'] ?? '';
        $driver['model'] = $driver['model'] ?? '';
        $driver['year'] = $driver['year'] ?? '';
        
        return response()->json([
            'status' => 'success',
            'data' => [$driver]
        ]);
    }


    public function driverLoginGoogle(Request $request): JsonResponse
    {
        $request->validate(['id' => 'required|string']);
        $id = $request->input('id');
        
        $row = DB::connection('primary')
            ->table('driver as d')
            ->leftJoin('phone_verification', 'phone_verification.phone_number', '=', 'd.phone')
            ->leftJoin('invites', 'invites.inviterDriverPhone', '=', 'd.phone')
            ->leftJoin('driver_gifts', 'driver_gifts.driver_id', '=', 'd.id')
            ->leftJoin('CarRegistration', 'CarRegistration.driverID', '=', 'd.id')
            ->select([
                'd.id', 'd.phone', 'd.email', 'd.gender', 'd.status',
                'd.first_name', 'd.last_name', 'd.name_arabic',
                'd.birthdate', 'd.site', 'd.employmentType', 'd.maritalStatus',
                'd.accountBank', 'd.bankCode',
                'phone_verification.verified as is_verified',
                'invites.isInstall', 'invites.isGiftToken',
                'driver_gifts.is_claimed',
                'CarRegistration.make', 'CarRegistration.model', 'CarRegistration.year',
            ])
            ->where('d.id', $id)
            ->first();

        if (!$row) {
            return response()->json(['status' => 'Failure', 'data' => 'User does not exist.']);
        }

        $driver = (array) $row;
        
        // Decrypt necessary fields
        $fieldsToDecrypt = ['email', 'phone', 'first_name', 'last_name', 'gender', 'name_arabic'];
        foreach ($fieldsToDecrypt as $field) {
            if (!empty($driver[$field])) {
                $dec = $this->encryption->decrypt($driver[$field]);
                if ($dec) $driver[$field] = $dec;
            }
        }

        // Default values for null fields
        $driver['is_verified'] = $driver['is_verified'] ?? 0;
        $driver['isInstall'] = $driver['isInstall'] ?? 0;
        $driver['is_claimed'] = $driver['is_claimed'] ?? 0;
        $driver['bankCode'] = $driver['bankCode'] ?? '';
        $driver['accountBank'] = $driver['accountBank'] ?? '';
        $driver['make'] = $driver['make'] ?? '';
        $driver['model'] = $driver['model'] ?? '';
        $driver['year'] = $driver['year'] ?? '';
        
        return response()->json([
            'status' => 'success',
            'count' => 1,
            'data' => [$driver]
        ]);
    }

    // ══════════════════════════════════════════════
    // HANDSHAKE (V1 Compatibility)
    // ══════════════════════════════════════════════

    public function passengerJwtHandshake(Request $request): JsonResponse
    {
        $request->validate(['id' => 'required|string', 'fingerPrint' => 'required|string']);
        
        $passenger = Passenger::find($request->input('id'));
        if (!$passenger) return $this->failure('User not found');

        // Security Check: Verify fingerprint matches stored token
        $storedToken = DB::connection('primary')->table('tokens')
            ->where('passengerID', $passenger->id)
            ->first();

        if ($storedToken && !hash_equals((string)$storedToken->fingerPrint, (string)$request->input('fingerPrint'))) {
            return $this->failure('Security mismatch: Invalid device fingerprint', 403);
        }

        if (empty($passenger->api_key)) {
            $this->generateApiKeys($passenger);
        }

        $jwt = $this->createJwt($passenger->id, 'passenger', $request->input('fingerPrint'), 3600);
        return response()->json([
            'status' => 'success', 
            'jwt' => $jwt, 
            'expires_in' => 3600,
            'api_key' => $passenger->api_key,
            'api_secret' => $passenger->api_secret
        ]);
    }

    public function driverJwtHandshake(Request $request): JsonResponse
    {
        // Flutter sends the email in the 'password' field, plus 'id' and 'fingerPrint'
        $request->validate([
            'id' => 'required|string', 
            'fingerPrint' => 'required|string',
            'password' => 'required|string',
            'fcm_token' => 'required|string'
        ]);
        
        $driver = Driver::where('id', $request->input('id'))->first();
        if (!$driver) return $this->failure('User not found');

        // The Flutter app sends the app-level secret (passnpassenger) in the 'password' field.
        // Since the Flutter app modifies this string locally (e.g., split(Env.addd)[0]), 
        // it may not match the raw env('passwordnewpassenger') on the server exactly.
        // We will rely on the fingerprint check below for security, as done in passengerJwtHandshake.
        $appSecret = config('intaleq.wallet_app_password', '');
        if ($appSecret !== '') {
            if ($request->input('password') !== $appSecret && $request->input('password') !== $this->encryption->decrypt($driver->email)) {
                \Log::warning('App verification mismatch, proceeding to fingerprint check', [
                    'driver_id' => $driver->id,
                ]);
            }
        }

        // Security Check: Verify fingerprint matches stored token
        $storedToken = DB::connection('primary')->table('driverToken')
            ->where('captain_id', $driver->id)
            ->first();

        // If a fingerprint exists, verify it. Otherwise, save the new one (acts as first time)
        if ($storedToken) {
            if (!empty($storedToken->fingerPrint) && !hash_equals((string)$storedToken->fingerPrint, (string)$request->input('fingerPrint'))) {
                return $this->failure('Security mismatch: Invalid device fingerprint', 403);
            }
            // Update fingerprint and token
            DB::connection('primary')->table('driverToken')->where('captain_id', $driver->id)
                ->update([
                    'fingerPrint' => $request->input('fingerPrint'),
                    'token' => $request->input('fcm_token'),
                ]);
        } else {
            DB::connection('primary')->table('driverToken')->insert([
                'captain_id' => $driver->id,
                'fingerPrint' => $request->input('fingerPrint'),
                'token' => $request->input('fcm_token'),
            ]);
        }

        if (empty($driver->api_key)) {
            $this->generateApiKeys($driver);
        }

        $jwt = $this->createJwt($driver->id, 'driver', $request->input('fingerPrint'), 14400);
        return response()->json([
            'status' => 'success', 
            'jwt' => $jwt, 
            'expires_in' => 14400,
            'api_key' => $driver->api_key,
            'api_secret' => $driver->api_secret
        ]);
    }

    // ══════════════════════════════════════════════
    // WALLET LOGIN
    // ══════════════════════════════════════════════

    public function passengerWalletLogin(Request $request): JsonResponse
    {
        $request->validate(['id' => 'required|string', 'fingerPrint' => 'required|string']);
        $jwt = $this->createWalletJwt($request->input('id'), $request->input('fingerPrint'), $request->input('aud', 'TripzWallet'), 60);
        $hmac = hash_hmac('sha256', $request->input('id'), config('intaleq.wallet_hmac_secret'));

        return $this->success(['jwt' => $jwt, 'hmac' => $hmac, 'expires_in' => 60]);
    }

    public function driverWalletLogin(Request $request): JsonResponse
    {
        $request->validate(['id' => 'required|string', 'fingerPrint' => 'required|string']);
        $jwt = $this->createWalletJwt($request->input('id'), $request->input('fingerPrint'), $request->input('aud', 'TripzWallet'), 60, config('intaleq.wallet_jwt_secret'));
        $hmac = hash_hmac('sha256', $request->input('id'), config('intaleq.wallet_hmac_secret'));

        return $this->success(['jwt' => $jwt, 'hmac' => $hmac, 'expires_in' => 60]);
    }

    // ══════════════════════════════════════════════
    // ADMIN LOGIN
    // ══════════════════════════════════════════════

    public function adminLogin(Request $request): JsonResponse
    {
        $request->validate(['device_number' => 'required|string', 'password' => 'required|string']);
        $admin = DB::connection('primary')->table('adminUser')->where('device_number', $request->input('device_number'))->first();

        if (!$admin || !password_verify($request->input('password'), $admin->password ?? '')) {
            return $this->failure('Invalid credentials');
        }

        $jwt = $this->createJwt((string)$admin->id, 'admin', $request->input('device_number'), 900);
        return $this->success(['token' => $jwt, 'expires_in' => 900, 'user_id' => $admin->id]);
    }

    // ══════════════════════════════════════════════
    // GOOGLE LOGIN
    // ══════════════════════════════════════════════

    public function passengerLoginGoogle(Request $request): JsonResponse
    {
        $request->validate(['email' => 'required|string', 'id' => 'required|string']);
        $email = $request->input('email');
        $searchEmail = (str_contains($email, '+') || str_contains($email, '/')) ? $email : $this->encryption->encrypt($email);

        $row = DB::connection('primary')
            ->table('passengers as p')
            ->leftJoin('phone_verification_passenger', 'phone_verification_passenger.phone_number', '=', 'p.phone')
            ->leftJoin('invitesToPassengers', 'invitesToPassengers.inviterPassengerPhone', '=', 'p.phone')
            ->leftJoin('promos', 'promos.passengerID', '=', 'p.id')
            ->select([
                'p.id', 'p.phone', 'p.email', 'p.gender', 'p.status',
                'p.birthdate', 'p.site', 'p.first_name', 'p.last_name',
                'p.sosPhone', 'p.education', 'p.employmentType', 'p.maritalStatus',
                'p.created_at', 'p.updated_at',
                'phone_verification_passenger.verified',
                'invitesToPassengers.isInstall',
                'invitesToPassengers.inviteCode',
                'invitesToPassengers.isGiftToken',
                'promos.promo_code as promo',
                'promos.amount as discount',
                'promos.validity_end_date as validity',
                'p.api_key',
                'p.api_secret',
            ])
            ->selectSub(function ($query) use ($request) {
                $query->from('packageInfo')
                    ->select('version')
                    ->where('platform', $request->input('platform', 'ios'))
                    ->limit(1);
            }, 'package')
            ->where('p.email', $searchEmail)
            ->where('p.id', $request->input('id'))
            ->first();

        if (!$row) return response()->json(['status' => 'Failure', 'data' => 'User does not exist.']);

        $data = (array) $row;
        $data['package'] = $data['package'] ?? '1.1.33'; // Default to avoid Null error in Flutter

        // Ensure API keys exist
        if (empty($data['api_key'])) {
            $passenger = Passenger::find($data['id']);
            if ($passenger) {
                $this->generateApiKeys($passenger);
                $data['api_key'] = $passenger->api_key;
                $data['api_secret'] = $passenger->api_secret;
            }
        }

        foreach ($data as $key => $value) {
            if (is_string($value) && !in_array($key, ['id', 'status', 'created_at', 'updated_at', 'verified', 'isInstall', 'isGiftToken', 'api_key', 'api_secret', 'package'])) {
                $dec = $this->encryption->decrypt($value);
                if ($dec) $data[$key] = $dec;
            }
        }

        // Fetch Notification Token & Fingerprint
        $tokenRow = DB::connection('primary')->table('tokens')->where('passengerID', $data['id'])->first();
        if ($tokenRow) {
            $data['fcm_token'] = $this->encryption->decrypt($tokenRow->token);
            $data['fingerprint'] = $tokenRow->fingerPrint;
        } else {
            $data['fcm_token'] = null;
            $data['fingerprint'] = null;
        }

        // Generate JWT using the header fingerprint, or fallback to the stored one
        $clientFp = $request->header('X-Device-FP');
        $jwtFp = !empty($clientFp) ? $clientFp : ($data['fingerprint'] ?? 'unknown');
        $jwt = $this->createJwt($data['id'], 'passenger', $jwtFp, 3600);

        return response()->json([
            'status' => 'success', 
            'count' => 1, 
            'data' => [$data],
            'jwt' => $jwt,
            'expires_in' => 3600
        ]);
    }

    // ══════════════════════════════════════════════
    // HELPERS
    // ══════════════════════════════════════════════

    private function createJwt(string $userId, string $userType, string $fingerprint, int $expiry): string
    {
        $payload = [
            'user_id' => $userId,
            'user_type' => $userType,
            'fingerprint' => $fingerprint,
            'iat' => time(),
            'exp' => time() + $expiry,
            'aud' => 'mobile-app',
            'iss' => 'Tripz',
            'jti' => bin2hex(random_bytes(16)),
        ];
        return JWT::encode($payload, config('intaleq.jwt_secret'), 'HS256');
    }

    private function createWalletJwt(string $userId, string $fingerprint, string $audience, int $expiry, ?string $secret = null): string
    {
        $payload = [
            'user_id' => $userId,
            'fingerPrint' => hash('sha256', $fingerprint . config('intaleq.fp_pepper', '')),
            'exp' => time() + $expiry,
            'iat' => time(),
            'iss' => 'Tripz-Wallet',
            'aud' => $audience,
            'jti' => bin2hex(random_bytes(16)),
        ];
        return JWT::encode($payload, $secret ?? config('intaleq.jwt_secret'), 'HS256');
    }

    private function generateApiKeys($model)
    {
        $model->api_key = bin2hex(random_bytes(16));
        $model->api_secret = bin2hex(random_bytes(32));
        DB::connection('primary')->table($model->getTable())->where('id', $model->id)->update([
            'api_key' => $model->api_key,
            'api_secret' => $model->api_secret
        ]);
    }
}