namespace Admin.NET.Plugin.AiDOP.Infrastructure;

/// <summary>
/// WP0-D4：qms_* 表 tenant_id 解析（优先入参，其次登录租户，最后系统默认）。
/// </summary>
public static class QmsTenantScope
{
    public const long DefaultTenantId = 1300000000001L;

    public static long Resolve(long? inputTenantId, long? userTenantId = null)
    {
        if (inputTenantId is > 0) return inputTenantId.Value;
        if (userTenantId is > 0) return userTenantId.Value;
        return DefaultTenantId;
    }

    /// <summary>从当前请求 UserManager 解析租户（无登录时回落默认）。无可选参数，可安全用于表达式树外局部变量。</summary>
    public static long Current()
    {
        try
        {
            var um = App.GetRequiredService<UserManager>();
            return Resolve(null, um.TenantId);
        }
        catch
        {
            return Resolve(null, null);
        }
    }

    /// <summary>优先使用显式入参租户。</summary>
    public static long Current(long inputTenantId) => Resolve(inputTenantId, null);
}