<?php
declare(strict_types=1);

namespace App\Controllers;

use App\Access;
use App\Expenses;
use App\Database;

/**
 * 花销记账：一笔花销挂在执行/计划节点上，按人分摊
 */
class ExpenseController
{
    public function store(): void
    {
        csrf_check();

        $nodeId = (int)($_POST['node_id'] ?? 0);
        $node   = Access::node($nodeId);   // 归属校验，非本家庭一律 404

        $splitIds = $_POST['split_user_ids'] ?? [];
        if (!is_array($splitIds)) {
            $splitIds = [$splitIds];
        }
        $splitIds = array_map('intval', $splitIds);

        $result = Expenses::create(
            $nodeId,
            (int)($_POST['payer_user_id'] ?? 0),
            (string)($_POST['total_amount'] ?? ''),
            (string)($_POST['currency'] ?? 'CNY'),
            (string)($_POST['category'] ?? '其他'),
            (string)($_POST['description'] ?? ''),
            (string)($_POST['is_budget'] ?? '0') === '1',
            $splitIds
        );

        if ($result['ok']) {
            $n = count($splitIds) > 0 ? count($splitIds) : 1;
            flash('error', '已记一笔，按 ' . $n . ' 人分摊');
        } else {
            flash('error', (string)$result['error']);
        }

        redirect('nodes/show', ['id' => (int)$node['id']], 'expenses');
    }

    public function destroy(): void
    {
        csrf_check();

        $id = (int)($_POST['id'] ?? 0);

        $stmt = Database::get()->prepare('
            SELECT e.id, tn.id AS node_id
            FROM expenses e
            JOIN trip_nodes tn ON tn.id = e.trip_node_id
            JOIN activities a ON a.id = tn.activity_id
            WHERE e.id = ? AND a.family_id = ?');
        $stmt->execute([$id, Access::familyId()]);
        $row = $stmt->fetch();
        if (!$row) {
            http_response_code(404);
            exit('花销记录不存在');
        }

        Expenses::delete($id);

        flash('error', '已删除这笔花销');
        redirect('nodes/show', ['id' => (int)$row['node_id']], 'expenses');
    }
}