<?php

namespace App\Http\Controllers\Refactor\Admin;

use App\Http\Controllers\Controller;
use App\Jobs\RefreshCacheableJob;
use App\Library\Cache\AppCache;
use App\Services\Admin\AdminDashboardCache;
use App\Services\Admin\DashboardService;
use Illuminate\Http\JsonResponse;
use Illuminate\Http\Request;

class DashboardController extends Controller
{
    private const ALLOWED_DAYS = [7, 30, 90];
    private const DEFAULT_DAYS = 7;

    public function index(Request $request)
    {
        $admin = $request->user()->admin;
        $service = new DashboardService($admin);

        $stats = $service->getStatCounts();
        $emailMetrics = $service->getEmailMetrics();
        $sendingTrend = $service->getSendingTrend(7);
        $campaignPerformance = $service->getCampaignPerformance(self::DEFAULT_DAYS);
        $campaignPerformanceComputedAt = AppCache::for(AdminDashboardCache::instance())
            ->lastUpdatedAt('SentByDay_' . self::DEFAULT_DAYS);
        $customerGrowth = $service->getCustomerGrowth();
        $planDistribution = $service->getPlanDistribution();
        $topCampaigns = $service->getTopCampaigns(5);
        $topLists = $service->getTopLists(5);
        $recent = $service->getRecentData();
        $setupChecklist = $service->getSetupChecklist();
        $currentTimezone = $admin->getTimezone();

        return view('refactor.pages.admin.dashboard', compact(
            'admin',
            'stats',
            'emailMetrics',
            'sendingTrend',
            'campaignPerformance',
            'campaignPerformanceComputedAt',
            'customerGrowth',
            'planDistribution',
            'topCampaigns',
            'topLists',
            'recent',
            'setupChecklist',
            'currentTimezone'
        ));
    }

    public function chartData(Request $request): JsonResponse
    {
        $days = $this->resolveDays($request);
        $admin = $request->user()->admin;

        $service = new DashboardService($admin);
        $data = $service->getCampaignPerformance($days);
        $computedAt = AppCache::for(AdminDashboardCache::instance())
            ->lastUpdatedAt('SentByDay_' . $days);

        return response()->json([
            'data' => $data,
            'computed_at' => $computedAt ? $admin->formatDateTime($computedAt, 'datetime_full') : null,
            'computed_at_relative' => $computedAt?->diffForHumans(),
            'computed_at_iso' => $computedAt?->toIso8601String(),
        ]);
    }

    public function refreshChart(Request $request): JsonResponse
    {
        $days = $this->resolveDays($request);

        RefreshCacheableJob::dispatch(
            AdminDashboardCache::instance(),
            'SentByDay_' . $days
        );

        return response()->json([
            'message' => trans('refactor/admin_dashboard.performance.refresh_dispatched'),
        ], 202);
    }

    private function resolveDays(Request $request): int
    {
        $days = (int) $request->input('days', self::DEFAULT_DAYS);

        return in_array($days, self::ALLOWED_DAYS, true) ? $days : self::DEFAULT_DAYS;
    }
}