using System;
using System.Collections.Generic;
using System.Linq;
using Rac.Models;

namespace Rac.Tools
{
    internal static class HttpHeaderUtility
    {
        public static HttpHeader Parse(string line)
        {
            var a = line.Split(':');
            var k = a[0];

            var v = k.Length == line.Length
                ? ""
                : line.Substring(k.Length + 1).Trim();

            return new HttpHeader { Name = k, Value = v };
        }

        public static HttpHeader[] Parse(string[] lines)
        {
            return lines.Select(Parse).ToArray();
        }

        public static HttpHeader[] ParseStringLines(string lines)
        {
            return Parse(lines.Split(new[] { "\r\n" }, StringSplitOptions.RemoveEmptyEntries));
        }

        public static string ToStringLines(this IEnumerable<HttpHeader> items)
        {
            return string.Join("\r\n", items.Select(p => p.ToString()));
        }
    }
}