<?php

namespace App\Http\Controllers\Api;

use App\Http\Controllers\Controller;
use App\Models\Activity;
use App\Models\TicketGrabEvent;
use App\Models\VerifyPortalCredential;
use Illuminate\Http\JsonResponse;
use Illuminate\Http\Request;
use Illuminate\Support\Facades\Hash;

class VerifyPortalAuthController extends Controller
{
    /**
     * 登录页展示用：根据短码或旧 portal 参数解析活动/抢票名称（无需登录）。
     */
    public function portalPreview(Request $request): JsonResponse
    {
        $code = strtolower(trim((string) $request->query('portal_code', '')));
        $portalToken = trim((string) $request->query('portal_token', ''));

        $activity = null;
        $tg = null;

        if ($code !== '') {
            $activity = Activity::query()->where('verify_portal_code', $code)->first();
            if (! $activity) {
                $tg = TicketGrabEvent::query()->where('verify_portal_code', $code)->first();
            }
        } elseif ($portalToken !== '' && strlen($portalToken) >= 32) {
            $activity = Activity::query()->where('verify_portal_token', $portalToken)->first();
            if (! $activity) {
                $tg = TicketGrabEvent::query()->where('verify_portal_token', $portalToken)->first();
            }
        }

        if (! $activity && ! $tg) {
            return response()->json(['message' => '无效的核销入口'], 404);
        }

        $title = $activity ? (string) $activity->title : (string) $tg->title;

        return response()->json(['event_title' => $title]);
    }

    public function login(Request $request): JsonResponse
    {
        $data = $request->validate([
            'portal_code' => ['nullable', 'string', 'max:16'],
            'portal_token' => ['nullable', 'string', 'max:64'],
            'username' => ['required', 'string', 'max:64'],
            'password' => ['required', 'string', 'max:72'],
        ]);

        $code = strtolower(trim((string) ($data['portal_code'] ?? '')));
        $portalToken = trim((string) ($data['portal_token'] ?? ''));

        if ($code === '' && ($portalToken === '' || strlen($portalToken) < 32)) {
            return response()->json(['message' => '请提供核销入口短码或有效入口参数'], 422);
        }

        $activity = null;
        $tg = null;

        if ($code !== '') {
            $activity = Activity::query()->where('verify_portal_code', $code)->first();
            if (! $activity) {
                $tg = TicketGrabEvent::query()->where('verify_portal_code', $code)->first();
            }
        } elseif ($portalToken !== '' && strlen($portalToken) >= 32) {
            $activity = Activity::query()->where('verify_portal_token', $portalToken)->first();
            if (! $activity) {
                $tg = TicketGrabEvent::query()->where('verify_portal_token', $portalToken)->first();
            }
        }

        if ($activity) {
            $kind = VerifyPortalCredential::KIND_ACTIVITY;
            $portalId = (int) $activity->id;
        } elseif ($tg) {
            $kind = VerifyPortalCredential::KIND_TICKET_GRAB;
            $portalId = (int) $tg->id;
        } else {
            return response()->json(['message' => '无效的核销入口'], 404);
        }

        $cred = VerifyPortalCredential::query()
            ->where('portal_kind', $kind)
            ->where('portal_id', $portalId)
            ->where('username', $data['username'])
            ->first();

        if (! $cred || ! Hash::check($data['password'], $cred->password)) {
            return response()->json(['message' => '账号或密码错误'], 422);
        }

        if (! $cred->portalAcceptsVerification()) {
            return response()->json(['message' => '活动已结束，无法登录核销'], 422);
        }

        $cred->tokens()->delete();
        $expiresAt = now()->addMonths(6);
        $plain = $cred->createToken('verify-portal', ['verify-portal'], $expiresAt)->plainTextToken;

        return response()->json([
            'token' => $plain,
            'auth_mode' => 'verify_portal',
            'portal_kind' => $kind,
            'portal_id' => $portalId,
        ]);
    }

    public function me(Request $request): JsonResponse
    {
        $cred = $request->user();
        if (! $cred instanceof VerifyPortalCredential) {
            return response()->json(['message' => '非核销门户登录态'], 403);
        }

        if (! $cred->portalAcceptsVerification()) {
            $cred->tokens()->delete();

            return response()->json(['message' => '活动已结束，核销已失效'], 403);
        }

        $cred->load('venue:id,name');
        $title = '';
        if ($cred->portal_kind === VerifyPortalCredential::KIND_ACTIVITY) {
            $title = (string) Activity::query()->where('id', $cred->portal_id)->value('title');
        } else {
            $title = (string) TicketGrabEvent::query()->where('id', $cred->portal_id)->value('title');
        }

        return response()->json([
            'auth_mode' => 'verify_portal',
            'portal_kind' => $cred->portal_kind,
            'portal_id' => $cred->portal_id,
            'username' => $cred->username,
            'venue' => $cred->venue ? ['id' => $cred->venue->id, 'name' => $cred->venue->name] : null,
            'event_title' => $title,
        ]);
    }
}