<?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 AND Market Provider
        $rawBreakdown = UserSubscriber::where('user_subscribers.expired_at', '>=', now())
            ->join('subscribe_plans', 'user_subscribers.subscribe_plan_id', '=', 'subscribe_plans.id')
            ->where('subscribe_plans.is_free', false) // Replaced redundant whereHas for better performance
            ->selectRaw('subscribe_plans.name as plan_name, user_subscribers.market_provider, count(DISTINCT user_subscribers.user_id) as total')
            ->groupBy('subscribe_plans.name', 'user_subscribers.market_provider')
            ->get();

        // 4. Safely group the results in PHP to fix split numbers (merging null, '', and 'web')
        $paidBreakdown = $rawBreakdown->map(function ($item) {
            $provider = strtolower(trim($item->market_provider));

            // Normalize the provider names
            if (empty($provider) || $provider === 'web') {
                $providerName = 'سایت';
            } elseif ($provider === 'bazar') {
                $providerName = 'بازار';
            } elseif ($provider === 'myket') {
                $providerName = 'مایکت';
            } else {
                $providerName = ucfirst($provider); // Dynamic fallback for any future gateways
            }

            return [
                'display_name' => $item->plan_name . ' (' . $providerName . ')',
                'total' => $item->total
            ];
        })->groupBy('display_name')->map(function ($group, $key) {
            // Merge any split rows (e.g. 'web' + null) into one accurate total sum
            return (object) [
                'display_name' => $key,
                'total' => $group->sum('total')
            ];
        })->values();

        // Total paid is the exact sum of the merged 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 (Strictly the last 7 calendar days)
        $chartDates = [];
        $newUsersData = [];
        $paidSubsData = [];
        $freeSubsData = [];

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

            // Format X-axis to Jalali for the chart labels
            $chartDates[] = \Morilog\Jalali\Jalalian::fromCarbon($date)->format('Y/m/d');

            // 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'
        ));
    }
}