<?php

namespace App\Http\Controllers;

use App\Models\Website;
use App\Services\AnalyticsQueryService;
use Illuminate\Http\JsonResponse;
use Illuminate\Http\Request;
use Illuminate\Support\Carbon;
use Illuminate\View\View;

class DashboardController extends Controller
{
    public function show(Request $request, Website $website): View
    {
        $this->authorize('view', $website);

        [$from, $to] = $this->parseDateRange($request);

        $service = AnalyticsQueryService::for($website, $from, $to);
        $metrics = $service->summary();
        $chartData = $service->visitorsOverTime();
        $activeVisitors = AnalyticsQueryService::activeVisitors($website);

        return view('dashboard.show', compact(
            'website', 'metrics', 'chartData', 'activeVisitors', 'from', 'to',
        ));
    }

    public function realtime(Website $website): JsonResponse
    {
        $this->authorize('view', $website);

        return response()->json([
            'active' => AnalyticsQueryService::activeVisitors($website),
        ]);
    }

    private function parseDateRange(Request $request): array
    {
        $range = $request->get('range', '7d');

        $to = Carbon::today();

        $from = match ($range) {
            'today' => Carbon::today(),
            '7d' => Carbon::today()->subDays(6),
            '30d' => Carbon::today()->subDays(29),
            '90d' => Carbon::today()->subDays(89),
            'custom' => Carbon::parse($request->get('from', Carbon::today()->subDays(6)->toDateString())),
            default => Carbon::today()->subDays(6),
        };

        if ($range === 'custom' && $request->has('to')) {
            $to = Carbon::parse($request->get('to'));
        }

        if ($from->gt($to)) {
            [$from, $to] = [$to, $from];
        }

        return [$from, $to];
    }
}