<?php
declare(strict_types=1);

namespace App\Models;

use App\Database;

class ItemModel
{
    public static function create(int $listId, array $data): array
    {
        $insertData = [
            'list_id' => $listId,
            'name' => $data['name'] ?? '',
            'category' => $data['category'] ?? null,
            'quantity' => $data['quantity'] ?? 1.0,
        ];

        $id = Database::insert('items', $insertData);

        return self::findById($id);
    }

    public static function findById(int $id): ?array
    {
        $item = Database::selectOne('items', ['id' => $id]);

        if ($item) {
            $item['quantity'] = (float) $item['quantity'];
        }

        return $item;
    }

    public static function findByListId(int $listId): array
    {
        $items = Database::query(
            'SELECT * FROM items WHERE list_id = :list_id AND deleted_at IS NULL ORDER BY created_at DESC',
            ['list_id' => $listId]
        );

        foreach ($items as &$item) {
            $item['quantity'] = (float) $item['quantity'];
        }

        return $items;
    }

    public static function update(int $listId, int $itemId, array $data): ?array
    {
        $item = Database::selectOne('items', ['id' => $itemId, 'list_id' => $listId]);

        if (!$item) {
            return null;
        }

        $updateData = [];

        if (isset($data['name'])) {
            $updateData['name'] = $data['name'];
        }

        if (isset($data['category'])) {
            $updateData['category'] = $data['category'];
        }

        if (isset($data['quantity'])) {
            $updateData['quantity'] = $data['quantity'];
        }

        if (empty($updateData)) {
            return self::findById($itemId);
        }

        Database::update('items', $updateData, ['id' => $itemId, 'list_id' => $listId]);

        return self::findById($itemId);
    }

    public static function delete(int $listId, int $itemId): bool
    {
        $updated = Database::execute(
            'UPDATE items SET deleted_at = CURRENT_TIMESTAMP WHERE id = :id AND list_id = :list_id AND deleted_at IS NULL',
            ['id' => $itemId, 'list_id' => $listId]
        );

        return $updated > 0;
    }
}