<?php

namespace App\Http\Controllers\Api;

use App\Http\Controllers\Controller;
use App\Models\Notification;
use Illuminate\Http\JsonResponse;
use Illuminate\Http\Request;

class NotificationController extends Controller
{
    public function index(Request $request, string $recipientType): JsonResponse
    {
        $recipient = $this->resolveRecipient($recipientType);

        $query = Notification::query()
            ->where('recipient_type', $recipientType)
            ->where('recipient_id', $recipient->id);

        $unreadCount = (clone $query)->where('is_read', false)->count();

        if ($request->filled('is_read')) {
            $query->where('is_read', $request->boolean('is_read'));
        }

        if ($request->filled('search')) {
            $search = $request->string('search');
            $query->where(function ($q) use ($search) {
                $q->where('title', 'like', "%{$search}%")
                    ->orWhere('body', 'like', "%{$search}%");
            });
        }

        $query->orderByDesc('created_at');

        if ($request->filled('page') || $request->filled('per_page')) {
            $perPage = (int) $request->integer('per_page', 15);
            $paginator = $query->paginate($perPage, ['*'], 'page', (int) $request->integer('page', 1));

            return response()->json([
                'error' => false,
                'data' => [
                    'items' => $paginator->items(),
                    'total' => $paginator->total(),
                    'unread_count' => $unreadCount,
                ],
            ]);
        }

        $notifications = $query->limit(20)->get();

        return response()->json([
            'error' => false,
            'data' => [
                'items' => $notifications,
                'unread_count' => $unreadCount,
            ],
        ]);
    }

    public function show(Request $request, string $recipientType, int $id): JsonResponse
    {
        $recipient = $this->resolveRecipient($recipientType);

        $notification = Notification::query()
            ->where('recipient_type', $recipientType)
            ->where('recipient_id', $recipient->id)
            ->whereKey($id)
            ->first();

        if (!$notification) {
            return response()->json(['error' => true, 'message' => 'Notification not found'], 404);
        }

        return response()->json(['error' => false, 'data' => $notification]);
    }

    public function markRead(Request $request, string $recipientType, int $id): JsonResponse
    {
        $recipient = $this->resolveRecipient($recipientType);

        $notification = Notification::query()
            ->where('recipient_type', $recipientType)
            ->where('recipient_id', $recipient->id)
            ->whereKey($id)
            ->first();

        if (!$notification) {
            return response()->json(['error' => true, 'message' => 'Notification not found'], 404);
        }

        $notification->update([
            'is_read' => true,
            'read_at' => now(),
        ]);

        return response()->json(['error' => false, 'data' => $notification]);
    }

    public function markAllRead(Request $request, string $recipientType): JsonResponse
    {
        $recipient = $this->resolveRecipient($recipientType);

        Notification::query()
            ->where('recipient_type', $recipientType)
            ->where('recipient_id', $recipient->id)
            ->where('is_read', false)
            ->update([
                'is_read' => true,
                'read_at' => now(),
            ]);

        return response()->json(['error' => false, 'message' => 'Marked as read']);
    }

    private function resolveRecipient(string $recipientType)
    {
        return match ($recipientType) {
            'admin' => auth('admin')->user(),
            'client' => auth('client')->user(),
            default => abort(404),
        };
    }
}