<?php

namespace App\Http\Controllers\Miniapp;

use App\Http\Controllers\Controller;
use App\Models\MiniappUser;
use App\Services\WeChatMiniProgramService;
use App\Support\ApiResponse;
use App\Support\Miniapp\MiniappPresenter;
use Illuminate\Http\JsonResponse;
use Illuminate\Http\Request;
use Illuminate\Support\Str;

class AuthController extends Controller
{
    use ApiResponse;

    public function __construct(protected WeChatMiniProgramService $wechat) {}

    public function wechatLogin(Request $request): JsonResponse
    {
        $data = $request->validate([
            'code' => ['required', 'string', 'max:128'],
            'nickname' => ['nullable', 'string', 'max:64'],
            'avatar_url' => ['nullable', 'string', 'max:512'],
        ]);

        try {
            $session = $this->wechat->codeToSession($data['code']);
        } catch (\Throwable $e) {
            return $this->fail($e->getMessage(), 422);
        }

        $user = MiniappUser::query()->firstOrNew(['openid' => $session['openid']]);
        if ($session['unionid']) {
            $user->unionid = $session['unionid'];
        }
        if (! empty($data['nickname'])) {
            $user->nickname = $data['nickname'];
        }
        if (! empty($data['avatar_url'])) {
            $user->avatar_url = $data['avatar_url'];
        }
        if (! $user->exists) {
            $user->status = 1;
            $displayName = $data['nickname'] ?? '微信用户';
            $user->name = $displayName;
            if (empty($user->nickname)) {
                $user->nickname = $displayName;
            }
        }
        $user->save();

        if ((int) $user->status !== 1) {
            return $this->fail('账号已停用', 403);
        }

        return $this->ok($this->issueToken($user));
    }

    /**
     * 本地开发专用：浏览器 H5 调试时无法调用 wx.login，使用此接口模拟登录。
     */
    public function devLogin(Request $request): JsonResponse
    {
        if (! app()->environment('local')) {
            return $this->fail('仅 local 环境可用', 404);
        }

        $data = $request->validate([
            'nickname' => ['nullable', 'string', 'max:64'],
            'avatar_url' => ['nullable', 'string', 'max:512'],
        ]);

        $openid = 'dev_'.Str::lower(Str::random(24));
        $user = MiniappUser::query()->create([
            'openid' => $openid,
            'unionid' => null,
            'nickname' => $data['nickname'] ?? '本地调试用户',
            'avatar_url' => $data['avatar_url'] ?? null,
            'name' => $data['nickname'] ?? '本地调试用户',
            'status' => 1,
        ]);

        return $this->ok($this->issueToken($user));
    }

    public function me(Request $request): JsonResponse
    {
        /** @var MiniappUser $user */
        $user = $request->user();

        return $this->ok(MiniappPresenter::userPayload($user));
    }

    public function logout(Request $request): JsonResponse
    {
        $request->user()?->currentAccessToken()?->delete();

        return $this->ok(null, '已退出');
    }

    /** @return array<string, mixed> */
    protected function issueToken(MiniappUser $user): array
    {
        $user->tokens()->where('name', 'miniapp-api')->delete();
        $token = $user->createToken('miniapp-api')->plainTextToken;

        return [
            'token' => $token,
            'token_type' => 'Bearer',
            'user' => MiniappPresenter::userPayload($user),
        ];
    }
}