using Microsoft.EntityFrameworkCore;
using System.ComponentModel.DataAnnotations.Schema;
using System.Text.Json.Serialization;

namespace Fengling.Platform.Domain.AggregatesModel.GatewayAggregate;

/// <summary>
/// 路由匹配配置（值对象）
/// 对应 YARP 的 RouteMatch，以 JSON 存储在数据库中
/// </summary>
public class GwRouteMatch
{
    /// <summary>
    /// 路径匹配模式
    /// </summary>
    public string Path { get; set; } = string.Empty;

    /// <summary>
    /// HTTP 方法列表（如 ["GET", "POST"]）
    /// </summary>
    public List<string>? Methods { get; set; }

    /// <summary>
    /// Host 匹配列表（如 ["api.example.com", "*.example.com"]）
    /// </summary>
    public List<string>? Hosts { get; set; }

    /// <summary>
    /// Header 匹配规则
    /// </summary>
    [NotMapped]
    [JsonInclude]
    public List<GwRouteHeader>? Headers { get; set; }

    /// <summary>
    /// 查询参数匹配规则
    /// </summary>
    [NotMapped]
    [JsonInclude]
    public List<GwRouteQueryParameter>? QueryParameters { get; set; }
}

/// <summary>
/// Header 匹配规则（值对象）
/// </summary>
public class GwRouteHeader
{
    /// <summary>
    /// Header 名称
    /// </summary>
    public string Name { get; set; } = string.Empty;

    /// <summary>
    /// 匹配值列表
    /// </summary>
    public List<string> Values { get; set; } = [];

    /// <summary>
    /// 匹配模式
    /// </summary>
    public GwHeaderMatchMode Mode { get; set; } = GwHeaderMatchMode.ExactHeader;

    /// <summary>
    /// 是否区分大小写
    /// </summary>
    public bool IsCaseSensitive { get; set; } = false;
}

/// <summary>
/// 查询参数匹配规则（值对象）
/// </summary>
public class GwRouteQueryParameter
{
    /// <summary>
    /// 参数名称
    /// </summary>
    public string Name { get; set; } = string.Empty;

    /// <summary>
    /// 匹配值列表
    /// </summary>
    public List<string> Values { get; set; } = [];

    /// <summary>
    /// 匹配模式
    /// </summary>
    public GwQueryParameterMatchMode Mode { get; set; } = GwQueryParameterMatchMode.Exact;

    /// <summary>
    /// 是否区分大小写
    /// </summary>
    public bool IsCaseSensitive { get; set; } = false;
}

/// <summary>
/// Header 匹配模式
/// </summary>
public enum GwHeaderMatchMode
{
    ExactHeader = 0,
    Prefix = 1,
    Contains = 2,
    NotContains = 3,
    Exists = 4
}

/// <summary>
/// 查询参数匹配模式
/// </summary>
public enum GwQueryParameterMatchMode
{
    Exact = 0,
    Contains = 1,
    Prefix = 2,
    Exists = 3
}