<?php

namespace App\Http\Controllers\Api;

use App\Http\Controllers\Controller;
use App\Http\Requests\Api\UptimeIndexRequest;
use App\Models\Site;
use Illuminate\Http\JsonResponse;
use Illuminate\Http\Request;

class UptimeController extends Controller
{
    /**
     * Get uptime history for a site (paginated).
     */
    public function index(UptimeIndexRequest $request, Site $site): JsonResponse
    {
        // Ensure the site belongs to the authenticated user
        if ($site->user_id !== $request->user()->id) {
            return response()->json([
                'message' => 'Unauthorized',
            ], 403);
        }

        $perPage = $request->input('per_page', 50);
        $perPage = min($perPage, 100); // Max 100 per page

        $uptimeChecks = $site->uptimeChecks()
            ->orderBy('checked_at', 'desc')
            ->paginate($perPage);

        return response()->json($uptimeChecks);
    }

    /**
     * Get uptime statistics for a site.
     */
    public function stats(Request $request, Site $site): JsonResponse
    {
        // Ensure the site belongs to the authenticated user
        if ($site->user_id !== $request->user()->id) {
            return response()->json([
                'message' => 'Unauthorized',
            ], 403);
        }

        $totalChecks = $site->uptimeChecks()->count();
        $successfulChecks = $site->uptimeChecks()
            ->whereBetween('status_code', [200, 299])
            ->count();

        $uptimePercentage = $totalChecks > 0
            ? round(($successfulChecks / $totalChecks) * 100, 2)
            : 0;

        $averageResponseTime = $site->uptimeChecks()
            ->avg('response_time_ms');

        $latestCheck = $site->uptimeChecks()
            ->latest('checked_at')
            ->first();

        return response()->json([
            'data' => [
                'total_checks' => $totalChecks,
                'successful_checks' => $successfulChecks,
                'uptime_percentage' => $uptimePercentage,
                'average_response_time_ms' => $averageResponseTime ? round($averageResponseTime, 2) : null,
                'latest_check' => $latestCheck,
            ],
        ]);
    }
}