using Admin.NET.Core;
using Microsoft.AspNetCore.Http;

namespace Admin.NET.Plugin.AiDOP.Infrastructure;

/// <summary>
/// 从 HTTP 请求（显式参数 / JWT / query tenantId）解析 TenantId；均无有效值时回退框架默认租户。
/// </summary>
public static class AidopTenantHelper
{
    public static long GetTenantId(HttpContext? ctx) => Resolve(ctx);

    /// <summary>
    /// 解析租户：requestTenantId &gt; JWT Claim &gt; query tenantId &gt; DefaultTenantId。
    /// </summary>
    public static long Resolve(HttpContext? ctx, long? requestTenantId = null)
    {
        if (requestTenantId is > 0)
            return requestTenantId.Value;

        var claim = ctx?.User?.FindFirst(ClaimConst.TenantId)?.Value;
        if (!string.IsNullOrWhiteSpace(claim) && long.TryParse(claim, out var tid) && tid > 0)
            return tid;

        if (TryParseTenantId(ctx?.Request.Query["tenantId"].ToString(), out var queryTid))
            return queryTid;

        return SqlSugarConst.DefaultTenantId;
    }

    private static bool TryParseTenantId(string? raw, out long tenantId)
    {
        tenantId = 0;
        return !string.IsNullOrWhiteSpace(raw) && long.TryParse(raw.Trim(), out tenantId) && tenantId > 0;
    }
}