using System;
using System.Collections.Generic;
using System.IO;
using System.Net;
using ln.collections;

namespace ln.http;

public sealed class HttpRequestContext : IDisposable
{
    public Listener Listener { get; }
    public IPEndPoint LocalEndpoint => Listener.LocalEndpoint;
    public HttpConnection HttpConnection { get; }
    public Stream ConnectionStream { get; }
    public HttpRequest Request { get; protected set; }
    public HttpResponse Response { get; set; }
    public HttpRequestContext ParentContext { get; }
    public HttpPrincipal AuthenticatedPrincipal { get; set; }
    
    
    Dictionary<string, String> _parameters = new Dictionary<string, string>();

    public HttpRequestContext(HttpRequestContext parentContext, HttpRequest request)
        : this(parentContext.Listener, parentContext.HttpConnection, parentContext.ConnectionStream, request)
    {
        ParentContext = parentContext;
    }

    public HttpRequestContext(Listener listener, HttpConnection httpConnection, Stream connectionStream, HttpRequest request)
    {
        Listener = listener;
        Request = request;
        HttpConnection = httpConnection;
        ConnectionStream = connectionStream;
    }

    protected HttpRequestContext(Listener listener, HttpConnection httpConnection, Stream connectionStream)
    {
        Listener = listener;
        HttpConnection = httpConnection;
        ConnectionStream = connectionStream;
    }
    
    public void Dispose()
    {
        Request?.Dispose();
        Response?.Dispose();
    }
    
    
    public bool ContainsParameter(string parameterName) => _parameters.ContainsKey(parameterName);
    public String GetParameter(String parameterName) => GetParameter(parameterName, null);

    public String GetParameter(String parameterName, String defaultValue)
    {
        if (!_parameters.TryGetValue(parameterName, out string value))
            value = defaultValue;
        return value;
    }

    public bool TryGetParameter(String parameterName, out string parameterValue) =>
        _parameters.TryGetValue(parameterName, out parameterValue);
    public void SetParameter(String parameterName, String parameterValue) =>
        _parameters[parameterName] = parameterValue;

    public IEnumerable<string> ParameterNames => _parameters.Keys;
}