<?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();

        // Order tickets by updated_at so newly replied tickets jump to the top
        $recentTickets = Ticket::with('user')->latest('updated_at')->take(5)->get();

        // 5. Prepare Chart Data (Dynamic Dates Based on Actual Records)

        // Grab the 7 most recent unique dates where users actually registered
        $recentDates = User::latest('created_at')
            ->take(200) // Look through the last 200 users to find distinct dates
            ->get()
            ->pluck('created_at')
            ->map(function ($date) {
                // Ensure we get a standard Y-m-d string for querying
                return $date ? $date->format('Y-m-d') : null;
            })
            ->filter()
            ->unique()
            ->take(7)
            ->sort() // Sort chronologically (oldest to newest)
            ->values()
            ->toArray();

        // Fallback just in case the database is completely empty
        if (empty($recentDates)) {
            $recentDates = [now()->format('Y-m-d')];
        }

        $chartDates = [];
        $newUsersData = [];
        $paidSubsData = [];
        $freeSubsData = [];

        foreach ($recentDates as $dbDate) {
            // Add the date to the chart labels
            $chartDates[] = $dbDate;

            // Count records for this specific exact date
            $newUsersData[] = User::whereDate('created_at', $dbDate)->count();

            $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'
        ));
    }
}