using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.IO;
using System.Threading.Tasks;
using System.Diagnostics;
using System.Web.Script.Serialization;
using System.Windows.Forms;
using HundredMilesSoftware.UltraID3Lib;
using AudioUtils;
using System.Net;

namespace mp3taghandler
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }
        string currdirectory = null;
        RootObject rootjson;
        string[] currpaths;
        int i = 0;
        int jsonindex = 0;

        private void nextbutton_Click(object sender, EventArgs e)
        {
            try
            {
                if (i < currpaths.Length)
                {
                    if (currpaths[i].EndsWith(".mp3"))
                    {
                        UltraID3 mp3 = new UltraID3();
                        if (currpaths[i] != null)
                        {
                            mp3.Read(currpaths[i]);
                            FileInfo info = new FileInfo(currpaths[i]);

                            if (neugenre.Text != string.Empty)
                                mp3.ID3v23Tag.Genre = neugenre.Text;
                            if(neuautor.Text != string.Empty)
                                mp3.ID3v23Tag.Artist = neuautor.Text;
                            if (neutitel.Text != string.Empty)
                                mp3.ID3v23Tag.Title = neutitel.Text;
                            else
                                mp3.ID3v23Tag.Title = info.Name.Remove(info.Name.Length - 4, 4);
                            mp3.ID3v23Tag.WriteFlag = true;

                            mp3.Write();

                            if (neutitel.Text != string.Empty && neutitel.Text.ToLower() + ".mp3" != info.Name.ToLower())
                            {
                                File.Copy(info.FullName,currdirectory + "\\" + neutitel.Text + ".mp3");
                                File.Delete(info.FullName);
                            }
                            i++;

                            getcurrpath();

                            neuautor.Text = string.Empty;
                            neugenre.Text = string.Empty;
                            neutitel.Text = string.Empty;

                        }
                        else
                            i++;
                    }
                    else
                        i++;
                }
            }
            catch (Exception ex)
            {
                MessageBox.Show(ex.Message);
                i++;
            }
        }

        private void initbutton_Click(object sender, EventArgs e)
        {
            FolderBrowserDialog dialog = new FolderBrowserDialog();
            if (dialog.ShowDialog() == DialogResult.OK)
            {
                currdirectory = dialog.SelectedPath;
                currpaths = Directory.GetFiles(currdirectory);
                i = 0;

                foreach (String s in currpaths)
                {
                    String[] temp = s.Split('\\');
                    treeView1.Nodes.Add(new TreeNode(temp[temp.Length-1]));
                }
                getcurrpath();

            }
        }

        private void treeView1_AfterSelect(object sender, TreeViewEventArgs e)
        {
            i = e.Node.Index;
            getcurrpath();
        }

        private void getcurrpath()
        {
            UltraID3 mp3 = new UltraID3();
            mp3.Read(currpaths[i]);
            FileInfo info = new FileInfo(currpaths[i]);
            alttitel.Text = info.Name;
            altautor.Text = mp3.ID3v23Tag.Artist;
            altGenre.Text = mp3.ID3v23Tag.Genre;
            textBoxquery.Text = info.Name.Substring(0,info.Name.Length-4);
            try
            {
                treeView1.SelectedNode = treeView1.Nodes[i];
            }
            catch(ArgumentOutOfRangeException e)
            {
                Debug.WriteLine(e.Message);
            }
        }

        private RootObject getroot(int page,string query)
        {
            RootObject root = null;
            query.Replace(' ', '+');
            string url = "https://api.discogs.com/database/search?q="+query+ "&type=release&per_page=3&page="+page.ToString();

            WebClient client = new WebClient();

            client.Headers.Add(HttpRequestHeader.Host, "api.discogs.com");
            client.Headers.Add(HttpRequestHeader.Authorization, "Discogs key=fvjuYhGjrQYIGmdeSVZd, secret=UyHaEdePsdCzGcINqZvEoJPBfrzcwnbn");
            client.Headers.Add(HttpRequestHeader.UserAgent, "MP3Taghandler/0.2 +phil-susen@gmx.de");

            Stream stream = client.OpenRead(url);
            StreamReader objReader = new StreamReader(stream);
            string response = objReader.ReadToEnd();

            root = new JavaScriptSerializer().Deserialize<RootObject>(response);

            return root;
        }

        private void setProposal(int index)
        {
            try
            {
                neutitel.Text = rootjson.results[index].title.Split('-')[1].Trim(' ');
                neuautor.Text = rootjson.results[index].title.Split('-')[0].Trim(' ');
                string genres = string.Empty;
                foreach (string genre in rootjson.results[index].genre)
                {
                    genres += genre;
                    genres += " ";
                }
                neugenre.Text = genres;
            }
            catch(ArgumentOutOfRangeException e)
            {
                MessageBox.Show("There are no more Proposals. Try changing query.");
            }
        }

        private void reloadbutton_Click(object sender, EventArgs e)
        {
            rootjson = getroot(1, textBoxquery.Text);
            jsonindex = 0;
            setProposal(0);
        }

        private void lastproposal_Click(object sender, EventArgs e)
        {
            if (jsonindex > 0)
                jsonindex--;
            else
                MessageBox.Show("You are at the Start");
            int site = jsonindex / 3 + 1;
            int index = jsonindex % 3;
            if (rootjson.pagination.page != site)
                rootjson = getroot(site, textBoxquery.Text);
            setProposal(index);
        }

        private void nextproposal_Click(object sender, EventArgs e)
        {
            if (jsonindex < rootjson.pagination.items)
                jsonindex++;
            if (jsonindex < rootjson.pagination.items)
            {
                int site = jsonindex / 3 + 1;
                int index = jsonindex % 3;
                if (rootjson.pagination.page != site)
                    rootjson = getroot(site, textBoxquery.Text);
                setProposal(index);
            }
            else
            {
                MessageBox.Show("You are through all Proposals");
            }
        }

        private void skipbutton_Click(object sender, EventArgs e)
        {
            i++;
            getcurrpath();
        }

        private void button1_Click_1(object sender, EventArgs e)
        {
            waveControl1.Filename = "C:\\Users\\phil-\\Downloads\\Best_Of_You.wav";
            waveControl1.Read();
        }
    }
}