# 指定 MP3 文件夹路径
$mp3FolderPath = "D:\mp3"

# 获取文件夹内的所有 MP3 文件
$mp3Files = Get-ChildItem -Path $mp3FolderPath -Filter "*.mp3"

# 获取 MP3 文件总数
$totalCount = $mp3Files.Count

# 每组文件数
$groupSize = 20

# 获取今天的日期
$todayDate = Get-Date

# 循环创建子文件夹并移动文件
for ($i = 1; $i -le $totalCount; $i += $groupSize) {
    # 创建子文件夹名称，使用日期命名
    $folderName = $todayDate.ToString("yyyyMMdd")

    # 检查文件夹是否已存在，如果存在，增加一个后缀
    $suffix = 1
    while (Test-Path (Join-Path -Path $mp3FolderPath -ChildPath $folderName)) {
        $folderName = $todayDate.AddDays($suffix).ToString("yyyyMMdd")
        $suffix++
    }

    # 创建子文件夹
    $folderPath = Join-Path -Path $mp3FolderPath -ChildPath $folderName
    New-Item -ItemType Directory -Path $folderPath

    # 计算每组的起始和结束索引
    $start = $i - 1
    $end = [math]::Min($start + $groupSize - 1, $totalCount - 1)

    # 移动文件到子文件夹中
    $mp3Files[$start..$end] | ForEach-Object {
        $destinationPath = Join-Path -Path $folderPath -ChildPath $_.Name
        Move-Item -Path $_.FullName -Destination $destinationPath
    }

    # 使用日期加一天
    $todayDate = $todayDate.AddDays(1)
}

Write-Host "MP3 文件已按要求分组并移动到子文件夹中。"
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@echo off
setlocal enabledelayedexpansion

rem 获取当前日期并格式化为YYYYMMDD
for /f "tokens=1-3 delims=/" %%a in ("%date%") do (
    set "year=%%a"
    set "month=%%b"
    set "day=%%c"
)

rem 去掉星期几信息，设置文件夹路径
set "datevar=!year!!month!!day!"
set "datevar=!datevar:~0,8!"  rem 仅保留年月日部分
set "datePath=D:\mp3\!datevar!"

rem 检查日期路径是否存在
if exist "%datePath%" (
    rem 启动 PotPlayer Mini 播放该路径下的音乐
    "C:\Program Files\DAUM\PotPlayer\PotPlayerMini64.exe" "%datePath%" /autoplay
) else (
    echo 文件夹 %datePath% 不存在。
)

endlocal
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set SDL_AUDIODRIVER=directsound
ffplay.exe -autoexit -nodisp "123.mp3"
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@echo off
setlocal enabledelayedexpansion

rem 获取今天的日期并格式化为YYYYMMDD
for /f "tokens=1-3 delims=/" %%a in ("%date%") do (
    set "year=%%a"
    set "month=%%b"
    set "day=%%c"
)

rem 去掉星期几信息，设置文件夹路径
set "datevar=!year!!month!!day!"
set "datevar=!datevar:~0,8!"  rem 仅保留年月日部分

echo.
echo 请选择需要播放的日期:
echo.
rem 创建日期菜单
for /l %%i in (1,1,7) do (
    set "nextDate=!datevar:~0,4!!datevar:~4,2!!datevar:~6,2!"
    echo [%%i] !nextDate!
    if %%i lss 7 echo.
    set /a "datevar=datevar + 1"
)

echo.
set /p "choice=请选择要播放音乐的日期（1-7）: "
if "%choice%" geq "1" if "%choice%" leq "7" (
    rem 获取选择菜单上的日期并构建路径
    set /a "selectedDate=%choice%-1"
    set "datePath="
        set /a "day=%date:~8,2%+selectedDate"
        set "month=%date:~5,2%"
        set "year=%date:~0,4%"

rem 设置文件夹路径
    set "datevar3=!year!!month!!day!"
    set "datePath=D:\mp3\!datevar3!"

 rem 检查日期路径是否存在
    if exist "!datePath!" (
        rem 启动 PotPlayer Mini 播放该路径下的音乐
        start "" "C:\Program Files\DAUM\PotPlayer\PotPlayerMini64.exe" "!datePath!" /autoplay
    ) else (
        echo 文件夹 "!datePath!" 不存在。
    )
) else (
    echo 无效的选择。
)

endlocal
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@echo off
rem 批处理保存为utf-8编码格式
chcp 65001 >nul
set "folder=D:\mp3"
set /a m=0,n=20
if not exist "%folder%\list.txt" (
	cd.>"%folder%\list.txt"
)

:1
setlocal
for /f "useback delims=" %%a in ("%folder%\list.txt") do (
	set _"%%a"=1
)
for /f "delims=" %%i in ('dir /b /a-d "%folder%\*.mp3" "%folder%\*.flac"') do (
	if not defined _"%%i" (
		call set #%%random%%=%%i
		set /a m+=1
	)
)
if %m% lss %n% (
	cd.>"%folder%\list.txt"
	endlocal
	goto :1
)
for /f "tokens=1* delims==" %%a in ('set #') do (
	echo 播放 [%%b]
	rem 自行设置播放器
	mpv --window-minimized "%folder%\%%b"
	>>"%folder%\list.txt" echo %%b
	set /a n-=1,1/n 2>nul || exit
)
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