using KssSmaPlaLib.Commons;
using KssSmaPlaLib.Forms;
using KssSmaPlaLib.Ini;
using KssSmaPlaLib.Input.Gamen;
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Reflection;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;

namespace KssSmaPlaLib.Forms.ContextMenuFunction.Gamen
{
    public partial class DgvColumnEditorForm : Form
    {
        private const string COL_NAME_PROPERTY_NAME = "colPropertyName";
        private const string COL_NAME_DEFAULT_DISPLAY_NAME = "colDefaultDisplayName";
        private const string COL_NAME_DISPLAY_NAME = "colDisplayName";

        /// <summary>
        /// 対象のDGV
        /// </summary>
        private DataGridView _targetDgv = null;

        /// <summary>
        /// 対象DGVの列名から列インデックスを取得する辞書
        /// （後ほど列インデックスが全てゼロになる事象が起きるため）
        /// </summary>
        private readonly Dictionary<string, int> _colNameToRowIndexDic = null;

        /// <summary>
        /// コンストラクタ
        /// </summary>
        /// <param name="dgv"></param>
        public DgvColumnEditorForm(DataGridView dgv)
        {
            InitializeComponent();

            _targetDgv = dgv;

            // 列名から列インデックスを取得する辞書の作成（後ほど列インデックスが全てゼロになる事象が起きるため）
            _colNameToRowIndexDic = new Dictionary<string, int>();
            foreach (DataGridViewColumn col in _targetDgv.Columns) _colNameToRowIndexDic.Add(col.Name, col.Index);

            this.DialogResult = DialogResult.Cancel;
            
            DgvHelper.Initialize(ColumnDgv);

            ColumnDgv.Rows.Clear();

            // 編集した表示名
            var csv = IniHelper.ReadValue(null, _targetDgv.Parent.Name + "." + _targetDgv.Name, KEY_NAME_DISPLAY_NAME_CSV);

            // 表示順のリストを作る
            var cols = new DataGridViewColumn[_targetDgv.Columns.Count];
            _targetDgv.Columns.CopyTo(cols, 0);
            Array.Sort(cols, (a, b) => a.DisplayIndex.CompareTo(b.DisplayIndex));

            foreach (var col in cols)
            {
                var index = ColumnDgv.Rows.Add();
                string propertyName = string.Empty;
                string defaultDisplayName = string.Empty;
                bool visible = true;
                var colIndex = col.Index;
                var displayIndex = col.DisplayIndex;
                if (col.Tag == null || !(col.Tag is PropertyDescriptor))
                {
                    propertyName = col.Name;
                    defaultDisplayName = propertyName;
                }
                else
                {
                    PropertyDescriptor pd = col.Tag as PropertyDescriptor;
                    propertyName = pd.Name;
                    defaultDisplayName = pd.DisplayName;
                    var browsableAttr = pd.Attributes.OfType<BrowsableAttribute>().FirstOrDefault();
                    if (browsableAttr != null && !browsableAttr.Browsable)
                    {
                        visible = false;
                    }
                }
                //string displayName = col.HeaderText;
                string displayName =
                    StringUxer.GetStringByIndexFormCsv(csv, colIndex, string.Empty)
                    .Replace("@@@COMMA@@@", ",");

                ColumnDgv.Rows[index].Tag = col;
                ColumnDgv.Rows[index].Cells[COL_NAME_PROPERTY_NAME].Value = (!visible ? "【非】" : "") + propertyName;
                ColumnDgv.Rows[index].Cells[COL_NAME_DEFAULT_DISPLAY_NAME].Value = defaultDisplayName;
                ColumnDgv.Rows[index].Cells[COL_NAME_DISPLAY_NAME].Value = displayName == defaultDisplayName ? "" : displayName;

                SetVisible(index, col.Visible);
            }

            //// タグに入れておく（PropertyDescriptor型）
            //col.Tag = pd;

            //// 列ヘッダーを [DisplayName] に
            //col.HeaderText = pd.DisplayName;

            //// [Browsable(false)] の列は非表示（AutoGenerateでも列が立つ場合の保険）
            //var browsableAttr = pd.Attributes.OfType<BrowsableAttribute>().FirstOrDefault();
            //if (browsableAttr != null && !browsableAttr.Browsable)
            //{
            //    col.Visible = false;
            //    continue;
            //}

            // DGV列幅復元
            DgvHelper.DgvLoadColWidth(ColumnDgv);
        }

        /// <summary>
        /// フォームロード
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void DgvColumnEditorForm_Load(object sender, EventArgs e)
        {
            // バウンズ復元
            FormHelper.LoadFormBounds(this);
        }

        /// <summary>
        /// 👆ボタンクリック時
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void UpButton_Click(object sender, EventArgs e)
        {
            // 対象外状況判断
            if (ColumnDgv.SelectedRows.Count < 1) return;
            if (ColumnDgv.SelectedRows[0].Index == 0) return;

            // 事前取得
            var row = ColumnDgv.SelectedRows[0];
            var index = row.Index;  // Removeしたら-1になるからその前に取得しておく

            // 行移動の実行
            ColumnDgv.Rows.Remove(row);
            ColumnDgv.Rows.Insert(index - 1, row);

            // 行選択
            ColumnDgv.ClearSelection();
            ColumnDgv.Rows[index - 1].Selected = true;
        }

        /// <summary>
        /// 👇ボタンクリック時
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void DownButton_Click(object sender, EventArgs e)
        {
            // 対象外状況判断
            if (ColumnDgv.SelectedRows.Count < 1) return;
            if (ColumnDgv.SelectedRows[0].Index == ColumnDgv.RowCount - 1) return;

            // 事前取得
            var row = ColumnDgv.SelectedRows[0];
            var index = row.Index;  // Removeしたら-1になるからその前に取得しておく

            // 行移動の実行
            ColumnDgv.Rows.Remove(row);
            ColumnDgv.Rows.Insert(index + 1, row);

            // 行選択
            ColumnDgv.ClearSelection();
            ColumnDgv.Rows[index + 1].Selected = true;
        }

        /// <summary>
        /// DGVキー押下イベント
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void ColumnDgv_KeyDown(object sender, KeyEventArgs e)
        {
            if (e.Alt && (e.KeyCode == Keys.Up || e.KeyCode == Keys.Down))
            {
                if (e.KeyCode == Keys.Up)
                {
                    UpButton_Click(sender, e);
                }
                else
                {
                    DownButton_Click(sender, e);
                }

                // 既定動作抑止（メニュー呼び／ビープを止める）
                e.Handled = true;
                e.SuppressKeyPress = true;
            }
        }

        private const string KEY_NAME_DISPLAY_INDEX_CSV = "DisplayIndexCsv";
        private const string KEY_NAME_COLUMN_VISIBLE_CSV = "ColumnVisibleCsv";
        private const string KEY_NAME_DISPLAY_NAME_CSV = "DisplayNameCsv";

        /// <summary>
        /// OKボタンクリック時
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void OkButton_Click(object sender, EventArgs e)
        {
            //List<int> indexList = new List<int>();
            //foreach (DataGridViewRow row in ColumnDgv.Rows) indexList.Add(((DataGridViewColumn)row.Tag).Index);
            ////MessageBox.Show(string.Join(" ", indexList));
            //if (indexList.Max() != ColumnDgv.Rows.Count - 1)
            if (_colNameToRowIndexDic.Values.Max() != ColumnDgv.Rows.Count - 1)
            {
                MessageBox.Show(this, $"_colNameToRowIndexDicがおかしい！[_colNameToRowIndexDicのMax:{_colNameToRowIndexDic.Values.Max()},グリッド行数:{ColumnDgv.Rows.Count}]");
                this.DialogResult = DialogResult.None;
                return;
            }

            // 表示順
            int[] displayIndexArray = new int[ColumnDgv.Rows.Count];
            foreach (DataGridViewRow row in ColumnDgv.Rows)
                displayIndexArray[_colNameToRowIndexDic[((DataGridViewRow)row).Cells[0].Value.ToString()]]
                    = ((DataGridViewRow)row).Index;
            // INI書き込み
            IniHelper.WriteValue(null, _targetDgv.Parent.Name + "." + _targetDgv.Name, KEY_NAME_DISPLAY_INDEX_CSV, string.Join(",", displayIndexArray));

            // 表示非表示
            bool[] visibleArray = new bool[ColumnDgv.Rows.Count];
            foreach (DataGridViewRow row in ColumnDgv.Rows)
                visibleArray[_colNameToRowIndexDic[((DataGridViewRow)row).Cells[0].Value.ToString()]]
                    = IsVisible(((DataGridViewRow)row).Index);
            // INI書き込み
            IniHelper.WriteValue(null, _targetDgv.Parent.Name + "." + _targetDgv.Name, KEY_NAME_COLUMN_VISIBLE_CSV, string.Join(",", visibleArray));

            // 表示名称
            string[] nameArray = new string[ColumnDgv.Rows.Count];
            foreach (DataGridViewRow row in ColumnDgv.Rows)
            {
                var name = string.Empty;
                if (row.Cells[COL_NAME_DISPLAY_NAME].Value.ToString() != row.Cells[COL_NAME_DEFAULT_DISPLAY_NAME].Value.ToString())
                {
                    name = row.Cells[COL_NAME_DISPLAY_NAME]
                        .Value
                        .ToString()
                        .Replace(",", "@@@COMMA@@@");
                }
                nameArray[_colNameToRowIndexDic[((DataGridViewRow)row).Cells[0].Value.ToString()]] = name;
            }
            // INI書き込み
            IniHelper.WriteValue(null, _targetDgv.Parent.Name + "." + _targetDgv.Name, KEY_NAME_DISPLAY_NAME_CSV, string.Join(",", nameArray));
        }

        /// <summary>
        /// フォーム閉じるとき
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void DgvColumnEditorForm_FormClosing(object sender, FormClosingEventArgs e)
        {
            // バウンズの保存
            FormHelper.SaveFormBounds(this);

            // DGV列幅保存
            DgvHelper.DgvSaveColWidth(ColumnDgv);
        }

        /// <summary>
        /// 表示名の編集メニュークリック
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void EditDisplayNameMenu_Click(object sender, EventArgs e)
        {
            if (ColumnDgv.SelectedRows.Count < 1) return;
            var rowIndex = ColumnDgv.SelectedRows[0].Index;
            var text = ColumnDgv[COL_NAME_DISPLAY_NAME,rowIndex].Value.ToString();
            var defaultText= ColumnDgv[COL_NAME_DEFAULT_DISPLAY_NAME, rowIndex].Value.ToString();
            if (string.IsNullOrEmpty(text)) text = defaultText;
            using (var form = new TextInputForm(text)) 
            {
                if (form.ShowDialog() == DialogResult.Cancel) return;

                ColumnDgv[COL_NAME_DISPLAY_NAME, rowIndex].Value = form.EditedText == defaultText ? "" : form.EditedText;
            }
        }

        private void VisibleMenu_Click(object sender, EventArgs e)
        {
            if (ColumnDgv.SelectedRows.Count < 1) return;
            var rowIndex = ColumnDgv.SelectedRows[0].Index;
            SetVisible(rowIndex, !IsVisible(rowIndex));
        }

        private bool IsVisible(int rowIndex)
        {
            if (rowIndex < 0 || rowIndex >= ColumnDgv.Rows.Count) return true;
            if (ColumnDgv.Rows[rowIndex].DefaultCellStyle == null) return true;
            if (ColumnDgv.Rows[rowIndex].DefaultCellStyle.Font == null) return true;
            var style = ColumnDgv.Rows[rowIndex].DefaultCellStyle.Font.Style;
            return !((style & FontStyle.Strikeout) == FontStyle.Strikeout);
        }
        private void SetVisible(int rowIndex, bool visible)
        {
            if (rowIndex < 0 || rowIndex >= ColumnDgv.Rows.Count) return;
            if (ColumnDgv.Rows[rowIndex].DefaultCellStyle == null) return;
            Font font;
            if (ColumnDgv.Rows[rowIndex].DefaultCellStyle.Font != null)
            {
                font = ColumnDgv.Rows[rowIndex].DefaultCellStyle.Font;
            }
            else
            {
                font = ColumnDgv.DefaultCellStyle.Font;
            }
            var style = font.Style;
            if (visible)
            {
                style &= ~FontStyle.Strikeout;
            }
            else
            {
                style |= FontStyle.Strikeout;
            }
            ColumnDgv.Rows[rowIndex].DefaultCellStyle.Font = new Font(font, style);

            // 背景色
            ColumnDgv.Rows[rowIndex].DefaultCellStyle.BackColor = visible ? Color.Empty : Color.DarkGray;
        }
    }
}