<?php

namespace App\Providers;

use App\Services\PaliSeriesesService;
use App\Services\RedisCache;
use App\Services\RomanizeService;
use App\Services\UserService;
use App\Tools\QueryBuilderMacro;
use App\View\Composers\BlogViewComposer;
use Carbon\CarbonImmutable;
use Godruoyi\Snowflake\LaravelSequenceResolver;
use Godruoyi\Snowflake\Snowflake;
use Illuminate\Cache\RateLimiting\Limit;
use Illuminate\Database\Query\Builder as QueryBuilder;
use Illuminate\Http\Request;
use Illuminate\Support\Facades\Date;
use Illuminate\Support\Facades\DB;
use Illuminate\Support\Facades\RateLimiter;
use Illuminate\Support\Facades\View;
use Illuminate\Support\ServiceProvider;
use Illuminate\Validation\Rules\Password;

class AppServiceProvider extends ServiceProvider
{
    /**
     * Register any application services.
     */
    public function register(): void
    {
        /*
        |--------------------------------------------------------------------------
        | Snowflake ID Generator
        |--------------------------------------------------------------------------
        */
        $this->app->singleton('snowflake', function () {
            return (new Snowflake(
                config('mint.snowflake.data_center_id'),
                config('mint.snowflake.worker_id')
            ))
                ->setStartTimeStamp(
                    strtotime(config('mint.snowflake.start')) * 1000
                )
                ->setSequenceResolver(
                    new LaravelSequenceResolver(
                        $this->app->get('cache')->store()
                    )
                );
        });

        /*
        |--------------------------------------------------------------------------
        | Romanize Service
        |--------------------------------------------------------------------------
        */
        $this->app->singleton(RomanizeService::class);

        /*
        |--------------------------------------------------------------------------
        | Redis Cache（业务代码专用，门面 App\Facades\RedisCache，连 Redis Cluster）
        |--------------------------------------------------------------------------
        | 只登记这个类，不替换框架的 cache 绑定：RateLimiter、schedule 互斥锁、
        | snowflake 序列等框架内部仍走 Laravel Cache（config/cache.php）。
        */
        $this->app->singleton(RedisCache::class);

        /*
        |--------------------------------------------------------------------------
        | Pali Serieses Service
        |--------------------------------------------------------------------------
        */
        $this->app->singleton(PaliSeriesesService::class);

        /*
        |--------------------------------------------------------------------------
        | User Service
        |--------------------------------------------------------------------------
        |
        | 必须是 singleton：它在请求内维护一张 uuid => 摘要的身份映射，同一个用户
        | 在一次请求里被解析多次时只查一次库、只签一次头像 URL。每次 make 新实例
        | 那张映射就永远是空的。
        |
        */
        $this->app->singleton(UserService::class);
    }

    /**
     * Bootstrap any application services.
     */
    public function boot(): void
    {
        /*
        |--------------------------------------------------------------------------
        | Laravel 13 Default Production Behaviors
        |--------------------------------------------------------------------------
        */
        $this->configureDefaults();

        /*
        |--------------------------------------------------------------------------
        | Custom Query Builder Macros
        |--------------------------------------------------------------------------
        */
        QueryBuilder::mixin(
            $this->app->make(QueryBuilderMacro::class)
        );

        /*
        |--------------------------------------------------------------------------
        | View Composers
        |--------------------------------------------------------------------------
        */
        View::composer('blog.*', BlogViewComposer::class);
        View::composer('layouts.blog', BlogViewComposer::class);

        /*
        |--------------------------------------------------------------------------
        | Rate Limiters
        |--------------------------------------------------------------------------
        |
        | 找回密码会往外发邮件：按 IP 限住撞库式的批量请求，按邮箱限住对同一个人的
        | 邮件轰炸。设新密码的请求不带 email，只按 IP 计。
        |
        */
        RateLimiter::for('password-resets', fn (Request $request): array => array_filter([
            Limit::perMinute(10)->by('ip:'.$request->ip()),
            $request->filled('email')
                ? Limit::perHour(5)->by('email:'.mb_strtolower((string) $request->input('email')))
                : null,
        ]));

        // 注册验证码同样往外发邮件，口径与找回密码一致
        RateLimiter::for('email-certifications', fn (Request $request): array => array_filter([
            Limit::perMinute(10)->by('ip:'.$request->ip()),
            $request->filled('email')
                ? Limit::perHour(5)->by('email:'.mb_strtolower((string) $request->input('email')))
                : null,
        ]));

        // 比对验证码、建账号：按 IP 限，挡住对 6 位验证码的穷举（单个码另有 5 次试错上限）
        RateLimiter::for('sign-up', fn (Request $request): Limit => Limit::perMinute(20)->by('ip:'.$request->ip()));

        // 登录：按「账号 + IP」挡住对单个账号的猜密码，按 IP 挡住换着账号撞库
        RateLimiter::for('sessions', fn (Request $request): array => [
            Limit::perMinute(5)->by('login:'.mb_strtolower((string) $request->input('login')).'|'.$request->ip()),
            Limit::perMinute(30)->by('ip:'.$request->ip()),
        ]);
    }

    /**
     * Configure default behaviors for production-ready applications.
     */
    protected function configureDefaults(): void
    {
        /*
        |--------------------------------------------------------------------------
        | Use Immutable Dates
        |--------------------------------------------------------------------------
        */
        Date::use(CarbonImmutable::class);

        /*
        |--------------------------------------------------------------------------
        | Prevent destructive DB commands in production
        |--------------------------------------------------------------------------
        */
        DB::prohibitDestructiveCommands(
            app()->isProduction(),
        );

        /*
        |--------------------------------------------------------------------------
        | Strong password defaults in production
        |--------------------------------------------------------------------------
        */
        Password::defaults(
            fn (): ?Password => app()->isProduction()
                ? Password::min(12)
                    ->mixedCase()
                    ->letters()
                    ->numbers()
                    ->symbols()
                    ->uncompromised()
                : null,
        );
    }
}