<?php

declare(strict_types=1);

namespace App\Controllers\Admin;

use App\Controllers\BaseController;

class Dashboard extends BaseController
{
    public function index(): string
    {
        helper('admin');
        $lgIdx = admin_effective_lg_idx();

        $stats = [
            'order_count'      => 0,
            'order_amount'     => 0,
            'sale_count'       => 0,
            'sale_amount'      => 0,
            'inventory_count'  => 0,
            'issue_count_month'=> 0,
            'recent_orders'    => [],
            'recent_sales'     => [],
        ];

        if ($lgIdx) {
            $db = \Config\Database::connect();

            // 총 발주 건수/금액
            $orderStats = $db->query("
                SELECT COUNT(*) as cnt,
                       COALESCE(SUM(sub.total_amt), 0) as total_amount
                FROM bag_order bo
                LEFT JOIN (
                    SELECT boi_bo_idx, SUM(boi_amount) as total_amt
                    FROM bag_order_item GROUP BY boi_bo_idx
                ) sub ON sub.boi_bo_idx = bo.bo_idx
                WHERE bo.bo_lg_idx = ? AND bo.bo_status = 'normal'
            ", [$lgIdx])->getRow();
            $stats['order_count']  = (int) ($orderStats->cnt ?? 0);
            $stats['order_amount'] = (int) ($orderStats->total_amount ?? 0);

            // 총 판매 건수/금액
            $saleStats = $db->query("
                SELECT COUNT(*) as cnt, COALESCE(SUM(bs_amount), 0) as total_amount
                FROM bag_sale
                WHERE bs_lg_idx = ? AND bs_type = 'sale'
            ", [$lgIdx])->getRow();
            $stats['sale_count']  = (int) ($saleStats->cnt ?? 0);
            $stats['sale_amount'] = (int) ($saleStats->total_amount ?? 0);

            // 현재 재고 품목 수
            $invCount = $db->query("
                SELECT COUNT(*) as cnt FROM bag_inventory WHERE bi_lg_idx = ? AND bi_qty > 0
            ", [$lgIdx])->getRow();
            $stats['inventory_count'] = (int) ($invCount->cnt ?? 0);

            // 이번 달 불출 건수
            $monthStart = date('Y-m-01');
            $issueCount = $db->query("
                SELECT COUNT(*) as cnt FROM bag_issue
                WHERE bi2_lg_idx = ? AND bi2_status = 'normal' AND bi2_issue_date >= ?
            ", [$lgIdx, $monthStart])->getRow();
            $stats['issue_count_month'] = (int) ($issueCount->cnt ?? 0);

            // 최근 발주 5건
            $stats['recent_orders'] = $db->query("
                SELECT bo_idx, bo_lot_no, bo_order_date, bo_status
                FROM bag_order
                WHERE bo_lg_idx = ?
                ORDER BY bo_order_date DESC, bo_idx DESC
                LIMIT 5
            ", [$lgIdx])->getResult();

            // 최근 판매 5건
            $stats['recent_sales'] = $db->query("
                SELECT bs_idx, bs_ds_name, bs_bag_name, bs_qty, bs_amount, bs_sale_date, bs_type
                FROM bag_sale
                WHERE bs_lg_idx = ?
                ORDER BY bs_sale_date DESC, bs_idx DESC
                LIMIT 5
            ", [$lgIdx])->getResult();
        }

        return view('admin/layout', [
            'title'   => '대시보드',
            'content' => view('admin/dashboard/index', ['stats' => $stats, 'lgIdx' => $lgIdx]),
        ]);
    }
}