using OwnChar.App.Desktop.Api;
using OwnChar.App.Desktop.LangRes;
using OwnChar.Model;
using System.Collections.Generic;
using System.Linq;
using System.Windows.Forms;
using Telerik.WinControls;
using Telerik.WinControls.UI;

namespace OwnChar.App.Desktop.UI.MainTabs.Controls;

public partial class CharacterListControl : UserControl
{
    private IMainWindowApi mainApi = null!;
    private UserProfile? profile;
    private Group? group;

    public CharacterListControl()
    {
        InitializeComponent();
    }

    public void LoadContent(IMainWindowApi mainApi, UserProfile? profile)
    {
        LoadContent(mainApi, profile, null);
    }

    public void LoadContent(IMainWindowApi mainApi, Group? group)
    {
        LoadContent(mainApi, null, group);
    }

    private void LoadContent(IMainWindowApi mainApi, UserProfile? profile, Group? group)
    {
        this.mainApi = mainApi;
        this.profile = profile;
        this.group = group;
        PrepareList();
        LoadList(group);
    }

    private void PrepareList()
    {
        radListView_CharList.BeginUpdate();
        radListView_CharList.Columns.Clear();

        radListView_CharList.Columns.Add(GeneralLangRes.Column_Name);
        radListView_CharList.Columns.Add(GeneralLangRes.Column_Fandom);

        if (profile != null)
            radListView_CharList.Columns.Add(CharListControlLangRes.Column_CharOwner);
        else if (group != null)
            radListView_CharList.Columns.Add(CharListControlLangRes.Column_CharGroup);

        radListView_CharList.EndUpdate();
    }

    private void LoadList(Group? group)
    {
        radListView_CharList.BeginUpdate();
        radListView_CharList.Items.Clear();

        if (profile != null && mainApi.Manager?.Characters.GetCharacters(profile) is IEnumerable<Character> characters)
        {
            foreach (Character character in characters)
            {
                AddCharToList(character, false);
            }
        }

        radListView_CharList.EndUpdate();
    }

    private void AddCharToList(Character character, bool focus)
    {
        radListView_CharList.BeginUpdate();

        var newItem = new ListViewDataItem();
        UpdateCharListViewItem(newItem, character);
        newItem.Value = character;

        radListView_CharList.EndUpdate();

        if (focus)
        {
            radListView_CharList.SelectedItem = newItem;
            radListView_CharList.ListViewElement.ViewElement.Scroller.ScrollToItem(newItem);
        }
    }

    private void RemoveCharFromList(Character character)
    {
        radListView_CharList.BeginUpdate();

        foreach (var item in radListView_CharList.Items.ToArray())
        {
            if (item.Value == character)
                radListView_CharList.Items.Remove(item);
        }

        radListView_CharList.EndUpdate();
    }

    private void UpdateCharListViewItem(ListViewDataItem listItem, Character character)
    {
        listItem[0] = character.Name;
        listItem[1] = character.Fandom;

        if (group != null)
            listItem[2] = group.Name;
        else
            listItem[2] = mainApi.Manager?.Groups.GetOwner(group)?.Name;
    }

    private Character? GetSelectedChar()
    {
        return radListView_CharList.SelectedItem?.Value as Character;
    }

    private void NewChar()
    {
        if (mainApi.Manager?.Characters.CreateCharacter(CharListControlLangRes.UnnamedChar) is Character newChar)
            AddCharToList(newChar, true);
    }

    private void DeleteChar()
    {
        var selChar = GetSelectedChar();

        if (selChar != null)
        {
            if (RadMessageBox.Show(string.Format(GeneralLangRes.MsgBox_ConfirmDelete_TextGeneral, string.Format(CharListControlLangRes.MsgBox_ConfirmDelete_TextChar, selChar.Name)), string.Format(GeneralLangRes.MsgBox_ConfirmDelete_TitleGeneral, CharListControlLangRes.MsgBox_ConfirmDelete_TitleChar), MessageBoxButtons.YesNo, RadMessageIcon.Exclamation) == DialogResult.Yes)
            {
                mainApi.Manager?.Characters.DeleteCharacter(selChar);
                RemoveCharFromList(selChar);
            }
        }
        else
            RadMessageBox.Show(GeneralLangRes.MsgBox_NothingSelected, GeneralLangRes.MsgBox_Error, MessageBoxButtons.OK, RadMessageIcon.Error);
    }

    private void TryOpenChar(Character? character)
    {
        if (character != null)
            mainApi.OpenTab(new TabCharView(mainApi, character), string.IsNullOrWhiteSpace(character.Name) ? CharListControlLangRes.UnnamedChar : character.Name);
    }

    private void SearchInList()
    {
        var filterText = radTextBoxControl_SearchBox.Text.Trim();

        radListView_CharList.BeginUpdate();

        foreach (ListViewDataItem item in radListView_CharList.Items)
        {
            if (item.Value is Character character)
            {
                var isValidResult = false;

                if (!string.IsNullOrWhiteSpace(filterText))
                {
                    var allValues = new string?[]
                    {
                        character.Name,
                        character.Fandom,
                        mainApi.Manager?.Characters.GetOwner(character)?.Name,
                    };

                    foreach (var value in allValues)
                    {
                        if (!isValidResult && value is not null && value.Contains(filterText))
                            isValidResult = true;
                    }
                }

                item.Visible = isValidResult;
            }
        }

        radListView_CharList.EndUpdate();
    }

    // E V E N T S

    private void RadMenuItem_AddChar_Click(object sender, System.EventArgs e)
    {
        NewChar();
    }

    private void RadMenuItem_DeleteChar_Click(object sender, System.EventArgs e)
    {
        DeleteChar();
    }

    private void RadMenuItem_OpenChar_Click(object sender, System.EventArgs e)
    {
        TryOpenChar(GetSelectedChar());
    }

    private void RadTextBoxControl_SearchBox_TextChanged(object sender, System.EventArgs e)
    {
        SearchInList();
    }
}