using System.Collections.Generic;

namespace FileShare_Services.Core
{
    /// <summary>
    /// 抽象的请求上下文，屏蔽不同宿主（ASP.NET Core / Desktop WebView）的差异。
    /// </summary>
    public class ServiceEndpointContext
    {
        /// <summary>
        /// 请求路径，例如 "api/wData"
        /// </summary>
        public string Path { get; init; } = string.Empty;

        /// <summary>
        /// HTTP 方法（GET, POST, PUT, DELETE 等）
        /// </summary>
        public string Method { get; init; } = "GET";

        /// <summary>
        /// 请求头
        /// </summary>
        public Dictionary<string, string> Headers { get; init; } = new(StringComparer.OrdinalIgnoreCase);

        /// <summary>
        /// 请求体（原始字符串）
        /// </summary>
        public string? Body { get; set; }

        /// <summary>
        /// 查询参数
        /// </summary>
        public Dictionary<string, string> Query { get; init; } = new(StringComparer.OrdinalIgnoreCase);

        /// <summary>
        /// 路由路径参数。
        /// </summary>
        public Dictionary<string, string> RouteValues { get; init; } = new(StringComparer.OrdinalIgnoreCase);

        /// <summary>
        /// 响应状态码
        /// </summary>
        public int StatusCode { get; set; } = 200;

        /// <summary>
        /// 响应状态描述
        /// </summary>
        public string StatusMessage { get; set; } = "OK";

        /// <summary>
        /// 响应头
        /// </summary>
        public Dictionary<string, string> ResponseHeaders { get; set; } = new(StringComparer.OrdinalIgnoreCase)
        {
            ["Content-Type"] = "application/json; charset=utf-8"
        };

        /// <summary>
        /// 响应体
        /// </summary>
        public object? ResponseBody { get; set; }

        /// <summary>
        /// 存储在请求生命周期中的任意数据（由中间件/过滤器使用）
        /// </summary>
        public Dictionary<string, object?> Items { get; init; } = new();

        /// <summary>
        /// 获取请求头值
        /// </summary>
        public string? GetHeader(string key)
        {
            return Headers.TryGetValue(key, out var value) ? value : null;
        }

        /// <summary>
        /// 设置响应头
        /// </summary>
        public void SetResponseHeader(string key, string value)
        {
            ResponseHeaders[key] = value;
        }
    }
}