<?php

namespace Modules\Core\Auth\Filament\Pages;

use DanHarrin\LivewireRateLimiting\Exceptions\TooManyRequestsException;
use DanHarrin\LivewireRateLimiting\WithRateLimiting;
use Filament\Facades\Filament;
use Filament\Models\Contracts\FilamentUser;
use Filament\Pages\SimplePage;
use Illuminate\Contracts\Support\Htmlable;
use Illuminate\Validation\ValidationException;
use Modules\Core\Auth\Services\OtpService;

class Login extends SimplePage
{
    use WithRateLimiting;

    protected static string $view = 'core::auth.filament.pages.login';

    public ?string $email = '';
    public ?string $otp = '';
    public bool $otpSent = false;

    private OtpService $otpService;

    public function boot(OtpService $otpService): void
    {
        $this->otpService = $otpService;
    }

    public function mount(): void
    {
        if (Filament::auth()->check()) {
            redirect()->intended(Filament::getUrl());
        }
    }

    public function back(): void
    {
        $this->otpSent = false;
        $this->otp = '';
    }

    public function requestOtp(): void
    {
        $this->validate(['email' => 'required|email']);

        try {
            $this->rateLimit(5);
        } catch (TooManyRequestsException) {
            throw ValidationException::withMessages([
                'email' => 'Too many attempts. Please wait before trying again.',
            ]);
        }

        $this->otpService->generateAndSend($this->email);

        $this->otpSent = true;
    }

    public function authenticate(): void
    {
        $this->validate(['otp' => 'required']);

        try {
            $this->rateLimit(5);
        } catch (TooManyRequestsException) {
            throw ValidationException::withMessages([
                'otp' => 'Too many attempts. Please wait before trying again.',
            ]);
        }

        $staff = $this->otpService->validate($this->email, $this->otp);

        if (!$staff) {
            throw ValidationException::withMessages([
                'otp' => 'Invalid or expired code.',
            ]);
        }

        if ($staff instanceof FilamentUser && !$staff->canAccessPanel(Filament::getCurrentPanel())) {
            throw ValidationException::withMessages([
                'email' => 'You do not have access to this panel.',
            ]);
        }

        Filament::auth()->login($staff);

        session()->regenerate();

        redirect()->intended(Filament::getUrl());
    }

    public function getTitle(): string | Htmlable
    {
        return 'Sign in';
    }

    public function getHeading(): string | Htmlable
    {
        return 'Sign in to your account';
    }
}