<?php

namespace App\Http\Controllers\Client;

use App\Http\Controllers\Controller;
use App\Enums\UserEnum;
use App\Models\User;
use Illuminate\Http\Request;
use App\Http\Requests\Client\Auth\UserRegistrationRequest;
use App\Http\Requests\Client\Auth\VerifyOtpRequest;
use App\Services\Auth\AuthService;
use App\Services\Auth\OtpService;
use App\Services\Auth\RegistrationService;
use Inertia\Inertia;
use Illuminate\Support\Facades\Hash;
use Illuminate\Support\Facades\Auth;

class AuthController extends Controller
{
    private AuthService $authService;
    private OtpService $otpService;
    private RegistrationService $registrationService;


    public function __construct(AuthService $authService, OtpService $otpService, RegistrationService $registrationService)
    {
        $this->authService = $authService;
        $this->otpService = $otpService;
        $this->registrationService = $registrationService;
    }

    public function phone()
    {
        return Inertia::client('Auth/Phone');
    }

    public function checkPhone(Request $request)
    {
        $request->validate([
            'prefix' => 'required|string',
            'phone' => ['required', 'string', new \App\Rules\PhoneNumber]
        ]);

        $prefix = $request->input('prefix');
        $phone = $request->input('phone');

        $fullPhone = $this->formatFullPhoneNumber($prefix, $phone);

        $levels = $this->authService->getLevelsForPhone($fullPhone);

        if (count($levels) === 1) {
            session(['login_phone' => $fullPhone, 'login_level' => $levels[0]]);
            return redirect()->route('password');
        }

        if (count($levels) > 1) {
            session(['login_phone' => $fullPhone, 'available_levels' => $levels]);
            return redirect()->route('portal');
        }

        session(['register_phone' => $fullPhone]);
        return redirect()->route('register.chooseType');
    }


    private function formatFullPhoneNumber(string $prefix, string $phone): string
    {
        $phone = ltrim($phone, '0');

        return $prefix . $phone;
    }

    public function choosePortal(Request $request)
    {
        $phone = session('login_phone');
        $availableLevels = session('available_levels');

        if (!$phone || !$availableLevels) return redirect()->route('login');

        if ($request->level && in_array($request->level, $availableLevels)) {
            session(['login_level' => $request->level]);
            return redirect()->route('password');
        }

        return Inertia::client('Auth/ChoosePortal', compact('phone', 'availableLevels'));
    }

    public function showPasswordForm()
    {
        $phone = session('login_phone');
        $level = session('login_level');

        if (!$phone || !$level) return redirect()->route('login');

        return Inertia::client('Auth/Password', compact('phone', 'level'));
    }

    public function authenticate(Request $request)
    {
        $request->validate(['password' => 'required|string']);

        $phone = session('login_phone');
        $level = session('login_level');

        if (!$phone || !$level) {
            session()->flash('error', 'لطفاً ابتدا شماره موبایل خود را وارد کنید');
            return redirect()->route('login');
        }
        $persianLevel = $this->convertLevelToPersian($level);

        $user = $this->authService->authenticateByPhoneAndLevel($phone, $persianLevel, $request->password);
        if (!$user) {
            return back()->withErrors(['password' => 'گذرواژه یا شماره موبایل اشتباه است']);
        }

        return redirect()->route('dashboard.index');
    }

    public function sendOtp()
    {
        $phone = session('login_phone');

        if (!$phone) {
            session()->flash('error', 'شماره موبایل یافت نشد.');
            return redirect()->route('login');
        }

        session()->forget(['otp_verified', 'verified_phone']);

        $this->otpService->sendForPhone($phone, minutes: 3);

        session()->flash('success', 'کد تایید ارسال شد.');
        return redirect()->route('otpVerification');
    }

    public function otpVerification()
    {
        $phone = session('login_phone');
        if (!$phone) {
            session()->flash('error', 'شماره موبایل یافت نشد. مجدداً تلاش کنید.');
            return redirect()->route('login');
        }

        return Inertia::client('Auth/OtpVerification', ['phone' => $phone]);
    }

    public function verifyOtp(VerifyOtpRequest $request)
    {
        $phone = session('login_phone');
        if (!$phone) {
            session()->flash('error', 'شماره موبایل یافت نشد. مجدداً تلاش کنید.');
            return redirect()->route('login');
        }

        $ok = $this->otpService->verifyCode($phone, $request->otp_code);

        if (!$ok) {
            session()->flash('error', 'کد وارد شده معتبر نیست یا منقضی شده است.');
            return redirect()->back();
        }

        session(['otp_verified' => true, 'verified_phone' => $phone]);
        session()->flash('success', 'کد تایید با موفقیت تایید شد.');
        return redirect()->route('resetPassword');
    }

    public function resetPassword()
    {
        if (!session('otp_verified') || !session('verified_phone')) {
            session()->flash('error', 'لطفاً ابتدا شماره موبایل خود را احراز کنید');
            return redirect()->route('login');
        }

        return Inertia::client('Auth/ResetPassword', ['phone' => session('verified_phone')]);
    }

    public function updatePassword(Request $request)
    {
        if (!session('otp_verified') || !session('verified_phone')) {
            session()->flash('error', 'لطفاً ابتدا شماره موبایل خود را احراز کنید');
            return redirect()->route('login');
        }
        $level = $this->convertLevelToPersian(session('login_level'));

        $request->validate(['password' => 'required|string|min:8|confirmed']);

        $user = User::where('phone', session('verified_phone'))
        ->where('level', $level)
        ->first();
        if (!$user) {
            session()->flash('error', 'کاربر یافت نشد.');
            return redirect()->route('login');
        }

        $user->update(['password' => Hash::make($request->password)]);
        session()->flush();

        session()->flash('success', 'رمز عبور با موفقیت تغییر یافت.');
        return redirect()->route('login');
    }

    public function chooseType()
    {
        $phone = session('register_phone');
        return Inertia::client('Auth/ChooseRegisterType', ['phone' => $phone]);
    }

    public function registerSupervisor()
    {
        $phone = session('register_phone');
        return Inertia::client('Auth/RegisterSupervisor', ['phone' => $phone]);
    }

    public function registerVeterinarian()
    {
        $phone = session('register_phone');
        return Inertia::client('Auth/RegisterVet', ['phone' => $phone]);
    }

    public function store(UserRegistrationRequest $request)
    {
        $phone = session('register_phone');
        if (!$phone) {
            session()->flash('error', 'لطفاً ابتدا شماره موبایل خود را وارد کنید');
            return redirect()->route('login');
        }

        $data = array_merge($request->validated(), ['phone' => $phone]);

        $this->registrationService->registerAndLogin($data);

        session()->flash('success', 'ثبت‌نام با موفقیت انجام شد.');


        return redirect()->route('dashboard.index');
    }

    private function convertLevelToPersian($level)
    {
        return match ($level) {
            'supervisor' => UserEnum::Supervisor->value,
            'doctor' => UserEnum::Doctor->value,
            'veterinarian' => UserEnum::Vet->value,
            default => null,
        };
    }

    public function logout()
    {
        Auth::logout();
        session()->flush();
        return redirect()->route('login');
    }
}