<?php

namespace App\Http\Controllers\Admin;

use App\Http\Controllers\Controller;
use App\Models\User;
use App\Models\Suggestion;
use App\Models\Ticket;
use App\Models\UserSubscriber;
use Illuminate\Http\Request;
use Illuminate\Database\Eloquent\Builder;

class DashboardController extends Controller
{
    public function index()
    {
        // 1. Calculate General Statistics
        $totalUsers = User::count();

        // 2. Safely Count Free Subscribers using the relationship
        $freeSubscribers = UserSubscriber::where('expired_at', '>=', now())
            ->whereHas('subscribe', function (Builder $query) {
                $query->where('is_free', true);
            })
            ->distinct('user_id')
            ->count('user_id');

        // 3. Get Paid Subscribers & Breakdown by Plan Type
        $paidBreakdown = UserSubscriber::where('user_subscribers.expired_at', '>=', now())
            ->whereHas('subscribe', function (Builder $query) {
                $query->where('is_free', false);
            })
            ->join('subscribe_plans', 'user_subscribers.subscribe_plan_id', '=', 'subscribe_plans.id')
            ->selectRaw('subscribe_plans.name as plan_name, count(DISTINCT user_subscribers.user_id) as total')
            ->groupBy('subscribe_plans.name')
            ->get();

        // Total paid is the sum of the breakdown
        $paidSubscribers = $paidBreakdown->sum('total');

        // 4. Fetch Recent Data (Limit to 5)
        $recentSuggestions = Suggestion::with('user')->latest()->take(5)->get();
        $recentTickets = Ticket::with('user')->latest('updated_at')->take(5)->get();

        // 5. Prepare Chart Data (Last 7 Days)
        $chartDates = [];
        $newUsersData = [];
        $paidSubsData = [];
        $freeSubsData = [];

        for ($i = 6; $i >= 0; $i--) {
            $date = now()->subDays($i);
            $chartDates[] = $date->format('Y-m-d');
            $dbDate = $date->format('Y-m-d');

            $newUsersData[] = User::whereDate('created_at', $dbDate)->count();

            // Note: If you want to see all-time data in the chart instead of just 7 days,
            // you would need to group by month instead of day.
            $paidSubsData[] = UserSubscriber::whereDate('created_at', $dbDate)
                ->whereHas('subscribe', fn($q) => $q->where('is_free', false))->count();

            $freeSubsData[] = UserSubscriber::whereDate('created_at', $dbDate)
                ->whereHas('subscribe', fn($q) => $q->where('is_free', true))->count();
        }

        return view('admin.dashboard.index', compact(
            'totalUsers', 'paidSubscribers', 'freeSubscribers', 'paidBreakdown',
            'recentSuggestions', 'recentTickets',
            'chartDates', 'newUsersData', 'paidSubsData', 'freeSubsData'
        ));
    }
}