using System;
using System.Collections.Generic;
using System.Text.RegularExpressions;
using System.Xml;

namespace MockSubSonic
{
    public class Technorati
    {
        private static ITechnoratiAccessor dataStore = new TechnoratiAccessor();
        public static ITechnoratiAccessor TechnoratiAPI
        {
            get { return dataStore; }
            set { dataStore = value; }
        }

        public static List<string> GetTagListFromPost(string post)
        {
            List<string> tags = new List<string>();

            tags.AddRange(GetTagList(GetMatches(post)));

            return tags;
        }

        public static MatchCollection GetMatches(string post)
        {
            Regex r = new Regex("<a href=\"http://technorati.com/tags/(.+?)\" rel=\"tag\">(.+?)</a>", RegexOptions.IgnoreCase);
            MatchCollection collection = r.Matches(post);

            return collection;
        }

        public static List<string> GetTagList(MatchCollection collection)
        {
            List<string> list = new List<string>(collection.Count);
            foreach (Match match in collection)
            {
                list.Add(match.Groups[1].Value);
            }

            return list;
        }

        public static string GetUrl(string technoratiTerm)
        {
            string technoratiAPI = "REMOVED";
            int limit = 10;

            string url = string.Format("http://api.technorati.com/tag?key={0}&tag={1}&limit={2}", technoratiAPI, technoratiTerm, limit);

            return url;
        }

        public static XmlNodeList GetXmlNodeList(string technoratiUrl)
        {
            return TechnoratiAPI.GetXmlNodeList(technoratiUrl);
        }

        public static Blog CreateBlogPost(XmlNode post)
        {
            Blog blog = new Blog();
            blog.Title = post["title"].InnerText;
            blog.Description = post["excerpt"].InnerText;
            blog.Created = Convert.ToDateTime(post["created"].InnerText);
            blog.Url = post["permalink"].InnerText;
            return blog;
        }

        public static List<Blog> CreateBlogPostList(XmlNodeList xmlNodes)
        {
            List<Blog> blogs = new List<Blog>(xmlNodes.Count);

            foreach (XmlNode node in xmlNodes)
            {
                blogs.Add(CreateBlogPost(node));
            }

            return blogs;
        }

        public static List<Blog> CreateBlogPostList(List<string> terms)
        {
            List<Blog> blogs = new List<Blog>();
            foreach (string s in terms)
            {
                XmlNodeList nodes = GetXmlNodeList(GetUrl(s));
                blogs.AddRange(CreateBlogPostList(nodes));
            }

            return blogs;
        }
    }


    public class Blog
    {
        #region Properties
        private string title;
        public string Title
        {
            get { return title; }
            set { title = value; }
        }
        private string desc;
        public string Description
        {
            get { return desc; }
            set { desc = value; }
        }
        private DateTime created;
        public DateTime Created
        {
            get { return created; }
            set { created = value; }
        }
        private string link;
        public string Url
        {
            get { return link; }
            set { link = value; }
        }
        #endregion
    }

    public interface ITechnoratiAccessor
    {
        XmlNodeList GetXmlNodeList(string technoratiUrl);
    }

    public class TechnoratiAccessor : ITechnoratiAccessor
    {
        public XmlNodeList GetXmlNodeList(string technoratiUrl)
        {
            XmlDocument xmlResultsSet = new XmlDocument();
            xmlResultsSet.Load(new XmlTextReader(technoratiUrl));
            XmlNodeList xmlResponse = xmlResultsSet.SelectNodes("/tapi/document/item");
            return xmlResponse;
        }
    }

    
}