<?php

namespace App\Http\Controllers\Admin;

use App\Http\Controllers\Controller;
use App\Models\IpUserMapping;
use App\Models\OperationLog;
use Illuminate\Http\JsonResponse;
use Illuminate\Http\Request;
use Illuminate\Support\Facades\DB;
use Illuminate\Validation\Rule;

class IpUserMappingController extends Controller
{
    public function index(): JsonResponse
    {
        $mappings = IpUserMapping::query()
            ->orderBy('ip_address')
            ->get();

        $unmappedIps = OperationLog::query()
            ->select(
                'operation_logs.ip_address',
                DB::raw('COUNT(*) as logs_count'),
                DB::raw('MAX(operation_logs.created_at) as last_seen_at')
            )
            ->leftJoin('ip_user_mappings', 'operation_logs.ip_address', '=', 'ip_user_mappings.ip_address')
            ->whereNull('ip_user_mappings.id')
            ->where('operation_logs.ip_address', '!=', '')
            ->groupBy('operation_logs.ip_address')
            ->orderByDesc('last_seen_at')
            ->get();

        return response()->json([
            'success' => true,
            'data' => [
                'mappings' => $mappings,
                'unmapped_ips' => $unmappedIps,
            ],
        ]);
    }

    public function store(Request $request): JsonResponse
    {
        $data = $request->validate([
            'ip_address' => ['required', 'ip', 'max:64', 'unique:ip_user_mappings,ip_address'],
            'user_name' => ['required', 'string', 'max:128'],
            'remark' => ['nullable', 'string', 'max:255'],
        ]);

        $mapping = IpUserMapping::query()->create($data);

        return response()->json([
            'success' => true,
            'data' => [
                'mapping' => $mapping,
            ],
        ]);
    }

    public function update(Request $request, IpUserMapping $mapping): JsonResponse
    {
        $data = $request->validate([
            'ip_address' => [
                'required',
                'ip',
                'max:64',
                Rule::unique('ip_user_mappings', 'ip_address')->ignore($mapping->id),
            ],
            'user_name' => ['required', 'string', 'max:128'],
            'remark' => ['nullable', 'string', 'max:255'],
        ]);

        $mapping->update($data);

        return response()->json([
            'success' => true,
            'data' => [
                'mapping' => $mapping->refresh(),
            ],
        ]);
    }

    public function destroy(IpUserMapping $mapping): JsonResponse
    {
        $mapping->delete();

        return response()->json([
            'success' => true,
        ]);
    }
}