<?php

namespace App\Http\Controllers\Api;

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

class VerifyPortalManageController extends Controller
{
    public function activityShow(Request $request, Activity $activity): JsonResponse
    {
        $this->ensureActivityVenueAdmin($request, $activity);
        if ($activity->verify_portal_token === null || $activity->verify_portal_token === '') {
            $activity->forceFill(['verify_portal_token' => (string) \Illuminate\Support\Str::uuid()])->save();
        }
        VerifyPortalCode::ensureForActivity($activity);
        $activity->refresh();
        $rows = VerifyPortalCredential::query()
            ->where('portal_kind', VerifyPortalCredential::KIND_ACTIVITY)
            ->where('portal_id', $activity->id)
            ->with('venue:id,name')
            ->orderBy('id')
            ->get()
            ->map(fn (VerifyPortalCredential $c) => $this->credentialToRow($c));

        return response()->json([
            'verify_portal_code' => $activity->verify_portal_code,
            'credentials' => $rows,
        ]);
    }

    public function activityStore(Request $request, Activity $activity): JsonResponse
    {
        $this->ensureActivityVenueAdmin($request, $activity);
        $data = $request->validate([
            'username' => ['required', 'string', 'max:64'],
            'password' => ['required', 'string', 'min:6', 'max:72'],
            'note' => ['nullable', 'string', 'max:255'],
        ]);
        $vid = (int) $activity->venue_id;
        $exists = VerifyPortalCredential::query()
            ->where('portal_kind', VerifyPortalCredential::KIND_ACTIVITY)
            ->where('portal_id', $activity->id)
            ->where('venue_id', $vid)
            ->where('username', $data['username'])
            ->exists();
        if ($exists) {
            return response()->json(['message' => '该场馆下此用户名已存在'], 422);
        }
        $plain = (string) $data['password'];
        $c = VerifyPortalCredential::query()->create([
            'portal_kind' => VerifyPortalCredential::KIND_ACTIVITY,
            'portal_id' => $activity->id,
            'venue_id' => $vid,
            'username' => $data['username'],
            'password' => Hash::make($plain),
            'password_plain_enc' => Crypt::encryptString($plain),
            'note' => $data['note'] ?? null,
        ]);

        return response()->json(['id' => $c->id], 201);
    }

    public function activityUpdate(Request $request, Activity $activity, VerifyPortalCredential $verifyPortalCredential): JsonResponse
    {
        $this->ensureActivityVenueAdmin($request, $activity);
        $this->assertCredentialBelongsActivity($verifyPortalCredential, $activity);
        $data = $request->validate([
            'password' => ['sometimes', 'string', 'min:6', 'max:72'],
            'note' => ['sometimes', 'nullable', 'string', 'max:255'],
        ]);
        if (array_key_exists('password', $data)) {
            $plain = (string) $data['password'];
            $verifyPortalCredential->password = Hash::make($plain);
            $verifyPortalCredential->password_plain_enc = Crypt::encryptString($plain);
        }
        if (array_key_exists('note', $data)) {
            $verifyPortalCredential->note = $data['note'];
        }
        $verifyPortalCredential->save();

        return response()->json(['message' => '已更新']);
    }

    public function activityDestroy(Request $request, Activity $activity, VerifyPortalCredential $verifyPortalCredential): JsonResponse
    {
        $this->ensureActivityVenueAdmin($request, $activity);
        $this->assertCredentialBelongsActivity($verifyPortalCredential, $activity);
        $verifyPortalCredential->tokens()->delete();
        $verifyPortalCredential->delete();

        return response()->json(['message' => '已删除']);
    }

    public function ticketGrabShow(Request $request, TicketGrabEvent $ticketGrabEvent): JsonResponse
    {
        $this->ensureTicketGrabAdmin($request, $ticketGrabEvent);
        if ($ticketGrabEvent->verify_portal_token === null || $ticketGrabEvent->verify_portal_token === '') {
            $ticketGrabEvent->forceFill(['verify_portal_token' => (string) \Illuminate\Support\Str::uuid()])->save();
        }
        VerifyPortalCode::ensureForTicketGrabEvent($ticketGrabEvent);
        $ticketGrabEvent->refresh();
        $rows = VerifyPortalCredential::query()
            ->where('portal_kind', VerifyPortalCredential::KIND_TICKET_GRAB)
            ->where('portal_id', $ticketGrabEvent->id)
            ->with('venue:id,name')
            ->orderBy('venue_id')
            ->orderBy('id')
            ->get()
            ->map(fn (VerifyPortalCredential $c) => $this->credentialToRow($c));

        return response()->json([
            'verify_portal_code' => $ticketGrabEvent->verify_portal_code,
            'credentials' => $rows,
        ]);
    }

    public function ticketGrabStore(Request $request, TicketGrabEvent $ticketGrabEvent): JsonResponse
    {
        $this->ensureTicketGrabAdmin($request, $ticketGrabEvent);
        $data = $request->validate([
            'venue_id' => ['required', 'integer'],
            'username' => ['required', 'string', 'max:64'],
            'password' => ['required', 'string', 'min:6', 'max:72'],
            'note' => ['nullable', 'string', 'max:255'],
        ]);
        $vid = (int) $data['venue_id'];
        $pivotOk = TicketGrabEventVenue::query()
            ->where('ticket_grab_event_id', $ticketGrabEvent->id)
            ->where('venue_id', $vid)
            ->exists();
        abort_unless($pivotOk, 422, '场馆未参与本抢票活动');

        $exists = VerifyPortalCredential::query()
            ->where('portal_kind', VerifyPortalCredential::KIND_TICKET_GRAB)
            ->where('portal_id', $ticketGrabEvent->id)
            ->where('venue_id', $vid)
            ->where('username', $data['username'])
            ->exists();
        if ($exists) {
            return response()->json(['message' => '该场馆下此用户名已存在'], 422);
        }

        $plain = (string) $data['password'];
        $c = VerifyPortalCredential::query()->create([
            'portal_kind' => VerifyPortalCredential::KIND_TICKET_GRAB,
            'portal_id' => $ticketGrabEvent->id,
            'venue_id' => $vid,
            'username' => $data['username'],
            'password' => Hash::make($plain),
            'password_plain_enc' => Crypt::encryptString($plain),
            'note' => $data['note'] ?? null,
        ]);

        return response()->json(['id' => $c->id], 201);
    }

    public function ticketGrabUpdate(
        Request $request,
        TicketGrabEvent $ticketGrabEvent,
        VerifyPortalCredential $verifyPortalCredential,
    ): JsonResponse {
        $this->ensureTicketGrabAdmin($request, $ticketGrabEvent);
        $this->assertCredentialBelongsTicketGrab($verifyPortalCredential, $ticketGrabEvent);
        $data = $request->validate([
            'password' => ['sometimes', 'string', 'min:6', 'max:72'],
            'note' => ['sometimes', 'nullable', 'string', 'max:255'],
        ]);
        if (array_key_exists('password', $data)) {
            $plain = (string) $data['password'];
            $verifyPortalCredential->password = Hash::make($plain);
            $verifyPortalCredential->password_plain_enc = Crypt::encryptString($plain);
        }
        if (array_key_exists('note', $data)) {
            $verifyPortalCredential->note = $data['note'];
        }
        $verifyPortalCredential->save();

        return response()->json(['message' => '已更新']);
    }

    public function ticketGrabDestroy(
        Request $request,
        TicketGrabEvent $ticketGrabEvent,
        VerifyPortalCredential $verifyPortalCredential,
    ): JsonResponse {
        $this->ensureTicketGrabAdmin($request, $ticketGrabEvent);
        $this->assertCredentialBelongsTicketGrab($verifyPortalCredential, $ticketGrabEvent);
        $verifyPortalCredential->tokens()->delete();
        $verifyPortalCredential->delete();

        return response()->json(['message' => '已删除']);
    }

    /**
     * @return array<string, mixed>
     */
    private function credentialToRow(VerifyPortalCredential $c): array
    {
        $plain = null;
        if ($c->password_plain_enc !== null && $c->password_plain_enc !== '') {
            try {
                $plain = Crypt::decryptString($c->password_plain_enc);
            } catch (\Throwable) {
                $plain = null;
            }
        }

        return [
            'id' => $c->id,
            'venue_id' => $c->venue_id,
            'venue_name' => $c->venue?->name,
            'username' => $c->username,
            'password_plain' => $plain,
            'note' => $c->note,
            'created_at' => $c->created_at?->toDateTimeString(),
        ];
    }

    private function ensureActivityVenueAdmin(Request $request, Activity $activity): void
    {
        $user = $request->user();
        if ($user->isSuperAdmin()) {
            return;
        }
        $allowed = $user->venues()->where('venues.id', $activity->venue_id)->exists();
        abort_unless($allowed, 403, '仅可操作已绑定场馆');
    }

    private function ensureTicketGrabAdmin(Request $request, TicketGrabEvent $e): void
    {
        $pivots = TicketGrabEventVenue::query()
            ->where('ticket_grab_event_id', $e->id)
            ->pluck('venue_id')
            ->all();
        if ($pivots === []) {
            return;
        }
        $user = $request->user();
        if ($user->isSuperAdmin()) {
            return;
        }
        $allow = $user->venues()->pluck('venues.id');
        foreach (array_unique(array_map('intval', $pivots)) as $id) {
            if ($id > 0 && ! $allow->contains($id)) {
                abort(403, '仅可操作已绑定场馆');
            }
        }
    }

    private function assertCredentialBelongsActivity(VerifyPortalCredential $c, Activity $activity): void
    {
        abort_unless(
            $c->portal_kind === VerifyPortalCredential::KIND_ACTIVITY && (int) $c->portal_id === (int) $activity->id,
            404
        );
    }

    private function assertCredentialBelongsTicketGrab(VerifyPortalCredential $c, TicketGrabEvent $e): void
    {
        abort_unless(
            $c->portal_kind === VerifyPortalCredential::KIND_TICKET_GRAB && (int) $c->portal_id === (int) $e->id,
            404
        );
    }
}