using System.IO;

namespace DualScreenDemo
{
    public partial class PrimaryForm
    {
        // 拼音歌曲的 PictureBox
        private PictureBox pictureBoxPinYinSongs;
        // 存放拼音按鈕的陣列
        private Button[] letterButtonsForPinYinSongs;
        private string[] AlphabetSymbols=["Q","W","E","R","T","Y","U","I","O","P",
                                          "A","S","D","F","G","H","J","K","L",
                                          "Z","X","C","V","B","N","M"];   
        // 特殊功能按鈕（修改、清除、關閉）
        private Button modifyButtonPinYinSongs;
        private Button clearButtonPinYinSongs;
        private Button closeButtonPinYinSongs;
        // 用於顯示輸入文字的輸入框
        private RichTextBox inputBoxPinYinSongs;


        // 初始化拼音輸入相關的 UI 控件
        private void InitializeButtonsForPinYinSongs()
        {
            InitializeInputBoxPinYinSongs();
            InitializePinYinSongsButton();
            InitializeAlphbtBtns(pictureBoxPinYinSongs,LetterButtonPinYinSongs_Click);
        }

        // 初始化拼音輸入框 (RichTextBox)
        private void InitializeInputBoxPinYinSongs()
        {
            try
            {
                //字型設定
                string fontName = "Times New Roman";
                float fontSize = 26;
                FontStyle fontStyle = FontStyle.Regular;
                Color foreColor = Color.Black;

                // 創建拼音輸入框 (RichTextBox)
                inputBoxPinYinSongs = new RichTextBox
                {
                    Visible = false, // 預設為隱藏
                    Name = "inputBoxPinYinSongs", // 設定控制項名稱
                    ForeColor = foreColor, // 設定文字顏色
                    Font = new Font(
                        fontName,
                        fontSize / 900 * Screen.PrimaryScreen.Bounds.Height, // 根據螢幕大小調整字體
                        fontStyle
                    )
                };

                // 設定輸入框的位置與大小
                ResizeAndPositionControl(inputBoxPinYinSongs, 20,25, 448, 57);

                pictureBoxPinYinSongs.Controls.Add(inputBoxPinYinSongs);
            }
            catch (Exception ex)
            {
                Console.WriteLine($"An error occurred: {ex.Message}");
            }
        }
        private void InitializePinYinSongsButton()
        {
            var data = LoadBtnConfigData();

            modifyButtonPinYinSongs = new Button { Name = "modifyButtonPinYinSongs" };
            ConfigureButton(modifyButtonPinYinSongs, 650, 264, 72, 67,
                new Bitmap(Path.Combine(serverPath, data["ModifyButtonImagesPinYin"]["normal"])),
                new Bitmap(Path.Combine(serverPath, data["ModifyButtonImagesPinYin"]["mouseOver"])),
                new Bitmap(Path.Combine(serverPath, data["ModifyButtonImagesPinYin"]["mouseDown"])),
                ModifyButtonPinYinSongs_Click);

            pictureBoxPinYinSongs.Controls.Add(modifyButtonPinYinSongs);


            clearButtonPinYinSongs = new Button { Name = "clearButtonPinYinSongs" };
            ConfigureButton(clearButtonPinYinSongs, 8, 264, 72, 67,
                new Bitmap(Path.Combine(serverPath, data["ClearButtonImagesPinYin"]["normal"])),
                new Bitmap(Path.Combine(serverPath, data["ClearButtonImagesPinYin"]["mouseOver"])),
                new Bitmap(Path.Combine(serverPath, data["ClearButtonImagesPinYin"]["mouseDown"])),
                ClearButtonPinYinSongs_Click);

            pictureBoxPinYinSongs.Controls.Add(clearButtonPinYinSongs);


            closeButtonPinYinSongs = new Button { Name = "closeButtonPinYinSongs" };
            ConfigureButton(closeButtonPinYinSongs, 730, 264, 72, 67,
                new Bitmap(Path.Combine(serverPath, data["CloseButtonImagesPinYin"]["normal"])),
                new Bitmap(Path.Combine(serverPath, data["CloseButtonImagesPinYin"]["mouseOver"])),
                new Bitmap(Path.Combine(serverPath, data["CloseButtonImagesPinYin"]["mouseDown"])),
                CloseButtonPinYinSongs_Click);

            pictureBoxPinYinSongs.Controls.Add(closeButtonPinYinSongs);
        }

        private void InitializeAlphbtBtns(Control control, EventHandler handler)
        {
            // 初始化字母按鈕陣列，總共有 26 個按鈕
            letterButtonsForPinYinSongs = new Button[26];

            // 設置上排按鈕
            int x = 8;
            for (int i = 0; i < 10; i++)
            {
                CreateAlphbtBtns(i, x, 100, control, handler);
                x += 80;
            }

            x = 40;
            for (int i = 10; i < 19; i++)
            {
                CreateAlphbtBtns(i, x, 182, control, handler);
                x += 80;
            }
            // 設置下排按鈕
            x = 88;
            for (int i = 19; i < 26; i++)
            {
                CreateAlphbtBtns(i, x, 264, control, handler);
                x += 80;
            }
        }
        private void CreateAlphbtBtns(int index, int x, int y,Control control,EventHandler handler)
        {
            try
            {
                // 加載配置數據
                var data = LoadBtnConfigData();
                // 創建語音按鈕並設置其屬性
                letterButtonsForPinYinSongs[index] = new Button
                {
                    Name = $"PinYinLetterButtons_{AlphabetSymbols[index]}", // 按鈕名稱設為語音符號名稱
                };

                ConfigureButton(letterButtonsForPinYinSongs[index], x, y, 72, 67,
                    new Bitmap(Path.Combine(serverPath, data["PinYinLetterButtonImages"][$"button{index}_normal"])),
                    new Bitmap(Path.Combine(serverPath, data["PinYinLetterButtonImages"][$"button{index}_mouseOver"])),
                    new Bitmap(Path.Combine(serverPath, data["PinYinLetterButtonImages"][$"button{index}_mouseDown"])),
                    handler);

                // 設置按鈕的 Tag 屬性為對應的語音符號
                letterButtonsForPinYinSongs[index].Tag = AlphabetSymbols[index];

                // 將按鈕添加到表單的控制項集合中
                control.Controls.Add(letterButtonsForPinYinSongs[index]);
            }
            catch (Exception ex)
            {
                Console.WriteLine($"Error creating button at index {index}: {ex.Message}");
            }
        }

        // 顯示拼音歌曲圖片
        // <param name="imagePath">圖片路徑</param>
        private void ShowImageOnPictureBoxPinYinSongs(string imagePath)
        {
            // 使用指定的圖片路徑建立 Bitmap 影像
            Bitmap originalImage = new Bitmap(imagePath);

            // 將載入的圖片設定為 pictureBoxPinYinSongs 的影像
            pictureBoxPinYinSongs.Image = originalImage;

            // 調整 PictureBox 的大小與位置
            ResizeAndPositionPictureBox(pictureBoxPinYinSongs, 390, 360, 808, 356);
            // 顯示 PictureBox
            pictureBoxPinYinSongs.Visible = true;

        }

        // 設定拼音模式的 UI 是否可見
        // <param name="isVisible">是否可見</param>
        private void SetPinYinSongsAndButtonsVisibility(bool isVisible)
        {
            // 定義一個委派 (Action)，用於更新 UI 控件的可見性
            System.Action action = () =>
            {
                SuspendLayout();
                if (isVisible) SetUIVisible(pictureBoxPinYinSongs);
                else CloseUI(pictureBoxPinYinSongs);
            };

            // 如果當前執行緒不是 UI 執行緒，則使用 Invoke 確保執行於 UI 執行緒
            if (this.InvokeRequired)
            {
                this.Invoke(action);
            }
            else
            {
                action();
            }

        }
        
        #region 按鈕點擊事件
        // 拼音歌曲搜尋按鈕點擊事件
        private void PinyinSearchSongsButton_Click(object sender, EventArgs e)
        {
            // 更新搜尋模式按鈕的背景圖
            zhuyinSearchSongButton.BackgroundImage = zhuyinSearchSongNormalBackground;
            englishSearchSongButton.BackgroundImage = englishSearchSongNormalBackground;
            pinyinSearchSongButton.BackgroundImage = pinyinSearchSongActiveBackground;
            wordCountSearchSongButton.BackgroundImage = wordCountSearchSongNormalBackground;
            handWritingSearchSongButton.BackgroundImage = handWritingSearchSongNormalBackground;
            numberSearchSongButton.BackgroundImage = numberSearchSongNormalBackground;

            // 讀取 config.ini 並獲取拼音圖片的路徑
            var configData = LoadBtnConfigData();
            string pinyinImagePath = Path.Combine(serverPath, configData["ImagePaths"]["PinYinSongs"]);
            // 顯示拼音歌曲圖片
            ShowImageOnPictureBoxPinYinSongs(Path.Combine(serverPath, pinyinImagePath));

            
            // 鍵盤UI介面顯示設定
            SetWordCountSongsAndButtonsVisibility(false);       
            SetEnglishSongsAndButtonsVisibility(false);
            SetPinYinSongsAndButtonsVisibility(true);
            SetHandWritingForSongsAndButtonsVisibility(false);
            SetSongIDSearchAndButtonsVisibility(false);                  
            SetZhuYinSongsAndButtonsVisibility(false);
            
            ResetinputBox();
            pictureBoxPinYinSongs.Visible = true;
        }        

        // 處理拼音按鈕點擊事件
        private void LetterButtonPinYinSongs_Click(object sender, EventArgs e)
        {
            // 嘗試將觸發事件的物件轉換為 Button 類型
            var button = sender as Button;

            // 檢查按鈕是否為 null，並確保該按鈕的 Tag 屬性不為 null
            if (button != null && button.Tag != null)
            {
                // 確保輸入框 (inputBoxPinYinSongs) 是可見狀態
                if (inputBoxPinYinSongs.Visible)
                {
                    // 將按鈕的標籤 (Tag) 轉換為字串，並附加到輸入框的文字內容中
                    inputBoxPinYinSongs.Text += button.Tag.ToString();
                }
            }
        }
        // 「修改」按鈕點擊事件：刪除拼音輸入框中的最後一個字母。
        private void ModifyButtonPinYinSongs_Click(object sender, EventArgs e)
        {
            // 確保 inputBoxPinYinSongs 存在於視窗控制項集合內，且輸入框內有文字
            if (pictureBoxPinYinSongs.Controls.Contains(inputBoxPinYinSongs) && inputBoxPinYinSongs.Text.Length > 0)
            {
                // 刪除輸入框內的最後一個字母
                inputBoxPinYinSongs.Text = inputBoxPinYinSongs.Text.Substring(0, inputBoxPinYinSongs.Text.Length - 1);
            }
        }
        // 當使用者點擊清除按鈕時，若輸入框存在且有內容，則將其清空。
        private void ClearButtonPinYinSongs_Click(object sender, EventArgs e)
        {
            // 檢查視窗內是否包含 inputBoxPinYinSongs 控制項，且輸入框內是否有文字
            if (pictureBoxPinYinSongs.Controls.Contains(inputBoxPinYinSongs) && inputBoxPinYinSongs.Text.Length > 0)
            {
                // 清空拼音輸入框的內容
                inputBoxPinYinSongs.Text = "";
            }
        }
        private void CloseButtonPinYinSongs_Click(object sender, EventArgs e)
        {
            // 隱藏拼音輸入的背景圖片 (可能是 UI 中的輸入框背景)
            pictureBoxPinYinSongs.Visible = false;
            pinyinSearchSongButton.BackgroundImage = pinyinSearchSongNormalBackground;
            // 設定拼音輸入框與所有相關按鈕的可見性為 false
            SetPinYinSongsAndButtonsVisibility(false);
            FindPinYinSongs();
        }
        private void FindPinYinSongs(){
            string searchText = inputBoxPinYinSongs.Text;
            // 在這裡添加搜尋歌曲的邏輯
            // 例如：根據輸入框的內容搜尋歌曲
            string query = string.IsNullOrWhiteSpace(searchText)
                ? "SELECT * FROM song_library_cache ORDER BY song_id DESC LIMIT 1000;"
                : $"SELECT * FROM song_library_cache WHERE pinyin_abbr LIKE '{searchText}%' ORDER BY `song_name` DESC;";
            var searchResults = SearchSongs_Mysql(query);              
            // 重置分頁    
            currentPage = 0;
            totalPages = (int)Math.Ceiling((double)searchResults.Count / itemsPerPage);
            // 更新多頁面面板的內容
            multiPagePanel.currentPageIndex = 0;
            multiPagePanel.LoadSongs(searchResults);
        }
        #endregion
    }
}