using System.Diagnostics;

namespace Debug.ModelingMusic;
public class Music
{

    //选择的模式
    public static int mode = 0;
    public Music()
    {
        Console.Clear();
        do
        {
            Program.printfLine("模拟音游 1.0 by ");
            Program.printfLine("1.启动 2.测试下落 3.指定字符串 4.随机指定字符串下落 5.扬声器节奏 0.退出");
            var v = Console.ReadLine();
            if (int.TryParse(v, out int i))
            {
                mode = i;
                if (i == 0)
                {
                    //退出程序
                    Environment.Exit(0);
                    return;
                }
                Init().GetAwaiter().GetResult(); // 启动
                return;
            }
        } while (true);

    }
    private int consoleWidth = 0, consoleHeight = 0;
    private async Task Init()
    {
        Console.CursorVisible = false; // 隐藏光标
        Console.Clear();
        Program.printf("加载资源中");

        // 获取控制台的大小
        consoleWidth = Console.WindowWidth;
        consoleHeight = Console.WindowHeight - 1;
        for (int i = 0; i < 3; i++)
        {
            Program.printf("·");
            await Task.Delay(300);
        }
        Console.WriteLine();
        Program.printfLine("加载完成");
        await Task.Delay(500);
        Console.Clear();

        setCharArry();
        switch (mode)
        {//默认模式
            case 1:
                new Thread(MusicDebug.Default).Start();
                break;
            case 2:
                new Thread(MusicDebug.DebugDefault).Start();
                break;
            case 3:
            case 4:
                {
                    Console.CursorVisible = true; // 隐藏光标
                    Console.WriteLine("请输入字符串");
                    string? v = Console.ReadLine();
                    //string转成char[]
                    char[] ch = v!.ToCharArray();
                    if (mode == 3)
                    {
                        //指定字符串模式
                        new Thread(() => MusicDebug.DesignateDown(ch)).Start();
                    }
                    else
                    {
                        //随机指定字符串下落
                        new Thread(() => MusicDebug.DesignateRandmoDown(ch)).Start();
                    }
                    break;
                }
            case 5:
                new Thread(MusicDebug.MusicRhythm).Start();
                //MusicDebug.();
                break;
            default:
                break;
        }
        Console.CursorVisible = false; // 隐藏光标
        new Thread(PrintCharArray).Start();
        // 等待用户按下任意键后退出
        // Console.ReadKey();
    }



    /// <summary>
    /// 随机字符下落
    /// </summary>
    private static readonly Random random = new();
    //常量

    public const char ShowChar = ' ';
    //Y,X
    public static readonly Point[,] chars = new Point[10, 30];
    public static void Down(char a)
    {
        // 随机生成字符出现的初始位置

        // 设置光标位置
        ConsoleColor Color = ConsoleColor.White;
        int v = random.Next(0, 2);
        switch (v)
        {
            case 0:
                Color = ConsoleColor.Red;
                break;
            case 1:
                Color = ConsoleColor.Blue;
                break;
        }

        // 让字符从初始位置下落
        int x = random.Next(0, chars.GetLength(1));
        for (int y = 0; y < chars.GetLength(0); y++) // 注意这里使用consoleHeight
        {
            // 移动到下一行
            chars[y, x].Char = a;
            if (y > 0)
            {
                chars[y - 1, x].Char = ShowChar;
            }
            chars[y, x].Color = Color;
            Thread.Sleep(random.Next(60, 120)); // 控制字符下落速度

        }
        Thread.Sleep(50);
        chars[chars.GetLength(0) - 1, x].Char = ShowChar;
    }
    private static long item = 0;
    // 定义一个方法来打印二维字符数组

    public static void PrintCharArray()
    {
        var stopwatch = new Stopwatch();

        int frameCount = 0;
        double totalTime = 0;
        int i; int j;
        var a = chars.GetLength(0);
        var b = chars.GetLength(1);
        while (true)
        {
            stopwatch.Restart();

            Console.Clear(); Console.SetCursorPosition(0, 0);

            for (i = 0; i < a; i++)
            {
                for (j = 0; j < b; j++)
                {
                    Console.ForegroundColor = chars[i, j].Color;
                    Console.Write($" {chars[i, j].Char} ");
                    item++;
                    if (item > 100000)
                    {
                        GC.Collect(); item = 0;
                    }
                }
                Console.WriteLine();
            }
            switch (new Random().Next(0, 2))
            {
                case 0:
                    Console.ForegroundColor = ConsoleColor.Red;
                    break;
                case 1:
                    Console.ForegroundColor = ConsoleColor.Blue;
                    break;
            }
            for (i = 0; i < b; i++)
            {

                Console.Write("---");
            }

            Console.ResetColor();
            Console.SetCursorPosition(0, 1);// 设定光标位置到第二行

            // 停止计时并计算本帧的处理时间
            stopwatch.Stop();
            double elapsedMilliseconds = stopwatch.Elapsed.TotalMilliseconds;
            totalTime += elapsedMilliseconds;
            frameCount++;
            // 计算帧率
            double fps = frameCount / (totalTime / 1000.0);

            Console.WriteLine($" {fps:0} FPS");
            // 保持每秒约16.67ms（即大约60 FPS）的间隔
            // Thread.Sleep(Math.Max(0, 60 - (int)elapsedMilliseconds));

            //死方法 不知道为什么 控制台限制60 帧这样闪烁不会太严重
            Thread.Sleep(100);
        }
    }
    private void setCharArry()
    {
        for (int i = 0; i < chars.GetLength(0); i++)
        {
            for (int j = 0; j < chars.GetLength(1); j++)
            {
                chars[i, j] = new Point();  // 初始化每个元素
            }
            // Console.WriteLine();
        }
    }
}