<?php

namespace App\Filament\Widgets;

use App\Models\ApprovalQueue;
use App\Models\Donation;
use App\Models\EventLog;
use App\Models\ScheduledGivingDonation;
use Filament\Widgets\StatsOverviewWidget;
use Filament\Widgets\StatsOverviewWidget\Stat;

class OperationalHealthWidget extends StatsOverviewWidget
{
    protected static ?int $sort = 3;

    protected int | string | array $columnSpan = 'full';

    protected function getStats(): array
    {
        // Fundraisers waiting for review
        $pendingReview = ApprovalQueue::where('status', 'pending')->count();

        // Incomplete donations in last 7 days (people who tried to give but something went wrong)
        $incomplete7d = Donation::whereDoesntHave('donationConfirmation', fn ($q) => $q->whereNotNull('confirmed_at'))
            ->where('created_at', '>=', now()->subDays(7))
            ->count();

        // Regular giving that recently stopped
        $cancelledSG = ScheduledGivingDonation::where('is_active', false)
            ->where('updated_at', '>=', now()->subDays(30))
            ->count();

        // System errors
        $errorsToday = EventLog::whereDate('created_at', today())
            ->whereIn('status', ['failed', 'exception'])
            ->count();

        return [
            Stat::make('Fundraisers to Review', $pendingReview)
                ->description($pendingReview > 0 ? 'People are waiting for approval' : 'All caught up!')
                ->descriptionIcon($pendingReview > 0 ? 'heroicon-m-clock' : 'heroicon-m-check-circle')
                ->color($pendingReview > 20 ? 'danger' : ($pendingReview > 0 ? 'warning' : 'success'))
                ->url(route('filament.admin.resources.approval-queues.index')),

            Stat::make('Incomplete Donations', $incomplete7d)
                ->description('Last 7 days — people tried but payment didn\'t complete')
                ->descriptionIcon('heroicon-m-exclamation-triangle')
                ->color($incomplete7d > 50 ? 'danger' : ($incomplete7d > 0 ? 'warning' : 'success')),

            Stat::make('Cancelled Subscriptions', $cancelledSG)
                ->description('Monthly supporters who stopped in last 30 days')
                ->descriptionIcon($cancelledSG > 0 ? 'heroicon-m-arrow-down' : 'heroicon-m-check-circle')
                ->color($cancelledSG > 5 ? 'warning' : 'success'),

            Stat::make('System Problems', $errorsToday)
                ->description($errorsToday > 0 ? 'Errors today — check activity log' : 'No problems today')
                ->descriptionIcon($errorsToday > 0 ? 'heroicon-m-x-circle' : 'heroicon-m-check-circle')
                ->color($errorsToday > 0 ? 'danger' : 'success')
                ->url(route('filament.admin.resources.event-logs.index')),
        ];
    }
}