using System;
using System.Linq;
using System.Collections.Generic;
using System.IO;
using System.Windows;
using Microsoft.Win32;
using EDJournal;
using EliteBGS.BGS;
using EliteBGS.Util;

namespace EliteBGS {
    /// <summary>
    /// Interaction logic for LoadEntriesWindow.xaml
    /// </summary>
    public partial class LoadEntriesWindow : Window {
        public delegate void EntriesLoadedDelegate(List<Entry> entries);

        public event EntriesLoadedDelegate EntriesLoaded;

        Config config = new Config();

        public LoadEntriesWindow() {
            InitializeComponent();
        }

        private void Load_Click(object sender, RoutedEventArgs e) {
            string lines = Lines.Text.Trim();
            if (lines.Length <= 0) {
                return;
            }

            try {
                List<Entry> entries = new List<Entry>();

                foreach (string line in lines.Split('\n')) {
                    if (string.IsNullOrEmpty(line)) {
                        continue;
                    }
                    Entry entry = Entry.Parse(line);
                    entries.Add(entry);
                }

                if (entries.Count > 0) {
                    EntriesLoaded?.Invoke(entries);
                }
            } catch (Exception exception) {
                MessageBox.Show(string.Format("There was an error while parsing the JSON: {0}",
                    exception.ToString()));
            }
        }

        private void Clear_Click(object sender, RoutedEventArgs e) {
            Lines.Clear();
        }

        private void LoadFile_Click(object sender, RoutedEventArgs e) {
            OpenFileDialog dialog = new OpenFileDialog();

            dialog.DefaultExt = ".log";
            dialog.Filter = "Log files (*.log)|*.log|All files (*.*)|*";

            var location = config.Global.DefaultJournalLocation;
            if (Directory.Exists(location)) {
                dialog.InitialDirectory = location;
            }

            bool result = dialog.ShowDialog(this) ?? false;
            if (!result) {
                return;
            }

            try {
                using (FileStream stream = File.OpenRead(dialog.FileName)) {
                    using (StreamReader reader = new StreamReader(stream)) {
                        Lines.Text = reader.ReadToEnd();
                    }
                }
            } catch (Exception) {
            }
        }

        private void DeleteUnimportant_Click(object sender, RoutedEventArgs e) {
            string lines = Lines.Text.Trim();
            if (lines.Length <= 0) {
                return;
            }

            try {
                List<Entry> entries = new List<Entry>();

                foreach (string line in lines.Split('\n')) {
                    if (string.IsNullOrEmpty(line)) {
                        continue;
                    }
                    Entry entry = Entry.Parse(line);
                    if (Report.IsRelevant(entry)) {
                        entries.Add(entry);
                    }
                }

                if (entries.Count <= 0) {
                    return;
                }

                string[] text = entries
                    .ConvertAll(x => x.JSON.ToString(Newtonsoft.Json.Formatting.None))
                    .ToArray()
                    ;
                Lines.Text = string.Join("\n", text).Trim();
            } catch (Exception exception) {
                MessageBox.Show(string.Format("There was an error while parsing the JSON: {0}",
                    exception.ToString()));
            }
        }
    }
}