<?php

namespace App\Http\Controllers;

use App\Models\Treatment;
use Illuminate\Support\Facades\DB;

class MedicalDashboardController extends Controller
{
    public function index()
    {
        $monthlyTrends = Treatment::select(
            DB::raw('MONTHNAME(tanggal) as month'),
            DB::raw('COUNT(*) as total')
        )
            ->where('tanggal', '>=', now()->subMonths(6))
            ->groupBy('month', DB::raw('MONTH(tanggal)'))
            ->orderBy(DB::raw('MONTH(tanggal)'))
            ->get();

        // treatments memakai medicine_id. Nama obat diambil dari tabel medicines.
        $topObats = Treatment::query()
            ->join('medicines', 'treatments.medicine_id', '=', 'medicines.id')
            ->select(
                'medicines.id',
                'medicines.nama_obat',
                DB::raw('SUM(treatments.qty_used) as total_used')
            )
            ->whereNotNull('treatments.medicine_id')
            ->groupBy('medicines.id', 'medicines.nama_obat')
            ->orderByDesc('total_used')
            ->limit(5)
            ->get();

        $topComplaints = Treatment::select('keluhan', DB::raw('COUNT(*) as total'))
            ->whereNotNull('keluhan')
            ->where('keluhan', '!=', '')
            ->groupBy('keluhan')
            ->orderByDesc('total')
            ->limit(5)
            ->get();

        return view('pages.dashboard.medical', compact('monthlyTrends', 'topObats', 'topComplaints'));
    }
}