using Fake.Application;
using Fake.Users;
using Oms.Domain.CustomersAggregate.Repositories;

namespace Oms.Application.Shared;

/// <summary>
/// 仓储模块客户上下文解析。
/// </summary>
public static class WarehouseCustomerHelper
{
    /// <summary>
    /// 列表/汇总查询用的客户 ID：客户登录强制为自身；管理员未传或传入 ≤0 时返回 null（查询全部）。
    /// </summary>
    public static async Task<int?> ResolveListCustomerIdAsync(
        ICustomerRepository customerRepository,
        ICurrentUser currentUser,
        int? requestedCustomerId = null)
    {
        var normalizedRequest = requestedCustomerId is > 0 ? requestedCustomerId : null;
        return await OmsSessionHelper.ResolveListCustomerIdAsync(
            customerRepository,
            currentUser,
            normalizedRequest);
    }

    /// <summary>
    /// 写入/删除等必须明确客户归属的操作：客户登录强制为自身；管理员须传有效 customerId（>0）。
    /// </summary>
    public static async Task<int> ResolveRequiredCustomerIdAsync(
        ICustomerRepository customerRepository,
        ICurrentUser currentUser,
        int? requestedCustomerId = null)
    {
        var customerId = await ResolveListCustomerIdAsync(customerRepository, currentUser, requestedCustomerId);
        if (!customerId.HasValue || customerId.Value <= 0)
        {
            throw new BusinessException("客户ID不能为空");
        }

        return customerId.Value;
    }

    public static (bool HasFilter, int Value) ToCustomerFilter(int? customerId) =>
        (customerId.HasValue, customerId.GetValueOrDefault());

    public static string GenerateInboundNoticeNo() =>
        $"IN{DateTime.Now:yyyyMMddHHmmss}{Random.Shared.Next(1000, 9999)}";
}