[string]$AboutLink = "http://freshcode.club/projects/streamtuner2",
  [string]$VERSION = "2.2.0"
)            

#-- paths
$UsrFolder = $MyInvocation.MyCommand.Path -replace ("([\\/][^\\/]+){4}$","")
$UninstallPath = "$UsrFolder\share\streamtuner2\dev\uninstall.cmd"
$ResetPrefsPath = $UninstallPath -replace ("uninstall", "resetprefs")
$ModifyPath = $MyInvocation.MyCommand.Path -replace ("[.]ps1$", ".bat")
$IconPath = "$UsrFolder\share\pixmaps\streamtuner2.ico"

#-- system configuration
$ErrorActionPreference = "SilentlyContinue"  # ignore all path/registry lookup errors
$OutputEncoding = [System.Text.Encoding]::UTF8
$regPathCU = "HKCU:\Software\Microsoft\Windows\CurrentVersion\Uninstall"
$regPathLM = "HKLM:\Software\WOW6432Node\Microsoft\Windows\CurrentVersion\Uninstall" #64-Bit machine
if(!(Test-Path $regPathLM)) {                                                        #32-Bit machine
    $regPathLM = "HKLM:\Software\Microsoft\Windows\CurrentVersion\Uninstall"
    $ProgramFiles = "%ProgramFiles%"
}
New-Variable -Name STREAMRIPPER -Option AllScope -Value "$ProgramFiles\Streamripper" #can be changed in Check-Prerequisites


#-- what and how to install (hash list as used by Run-Task and Check-Prerequisites)

$tasks = @(
  @{
    title  = "Python 2.7.12"
    url    = "https://www.python.org/ftp/python/2.7.12/python-2.7.12.msi"
    cmd    = ""
    args   = 'TARGETDIR="{PYTHON}" /qb-!'
    regkey = "$regPathLM\{9DA28CE5-0AA5-429E-86D8-686ED898C665}"
    testpth= "{PYTHON}\pythonw.exe"
    is_opt = ''
    prescn = ''

  },
  @{
    title  = "PyGtk 2.24.2"
    url    = "http://ftp.gnome.org/pub/GNOME/binaries/win32/pygtk/2.24/pygtk-all-in-one-2.24.2.win32-py2.7.msi"
    cmd    = ""
    args   = 'TARGETDIR="{PYTHON}" ADDLOCAL=ALL REMOVE=PythonExtensionModulePyGtkSourceview2,PythonExtensionModulePyGoocanvas,PythonExtensionModulePyRsvg,DevelopmentTools /qb-!'
    regkey = "$regPathLM\{09F82967-D26B-48AC-830E-33191EC177C8}"

    testpth= "{PYTHON}\Lib\site-packages\gtk-2.0\pygtk-2.24.0-py2.7.egg-info"



  },
  @{
    title  = "Python requests"
    url    = "requests" # no download url, pip handles this
    cmd    = "easy_install"


    testpth= "{PYTHON}\Lib\site-packages\requests-2*py2.7.egg"



  },
  @{
    title  = "LXML 2.3"
    url    = "https://pypi.python.org/packages/d4/fa/e4e0c7a8fe971b10e275cdc20efd16f553a225e700c400c11da25276e4f4/lxml-2.3-py2.7-win32.egg"
    cmd    = "easy_install"


    testpth= "{PYTHON}\Lib\site-packages\lxml-2.3-py2.7-win32.egg"



  },
  @{
    title  = "PyQuery 1.2.1"
    url    = "https://pypi.python.org/packages/62/71/8ac1f5c0251e51714d20e4b102710d5eee1683c916616129552b0a025ba5/pyquery-1.2.17-py2.py3-none-any.whl"
    cmd    = "pip"
    args   = "--disable-pip-version-check"

    testpth= "{PYTHON}\Lib\site-packages\pyquery-1.2.17.dist-info"



  },
  @{
    title  = "PIL 1.1.7"
    url    = "http://effbot.org/downloads/PIL-1.1.7.win32-py2.7.exe"
    regkey = "$regPathCU\PIL-py2.7"
    testpth= "{PYTHON}\Lib\site-packages\PIL"
  },
  @{
    title  = "Streamripper 1.64.6"
    url    = "https://netcologne.dl.sourceforge.net/project/streamripper/streamripper%20%28current%29/1.64.6/streamripper-windows-installer-1.64.6.exe"
    cmd    = ""










    args   = "/S  /D={STREAMRIPPER}"  #NSIS does not use double quotes in /D parm
    regkey = "$regPathLM\Streamripper"
    testpth= "{STREAMRIPPER}\streamripper.exe"
    is_opt = '($optionalInstall)'     # ← could use '((Ask "Install streamripper too [y/N]") -match N)' instead
    prescn = 'if ($optionalInstall) {if ($_found = (Get-ITPV "Streamripper")) {$STREAMRIPPER = $_found}} else {$STREAMRIPPER=""; continue;}'

  },
  @{
    title  = "Uninstall script"

    cmd    = 'Create-Uninstallscript'

  },
  @{
    title  = "Desktop shortcut"

    cmd    = 'Make-Shortcut -dir $Home\Desktop -name Streamtuner2.lnk -target $PYTHON\pythonw.exe -arg $UsrFolder\bin\streamtuner2'

  },
  @{
    title  = "Startmenu shortcut"
    cmd    = 'Make-Shortcut -dir "$StartMenu\Streamtuner2" -name Streamtuner2.lnk -target $PYTHON\pythonw.exe -arg $UsrFolder\bin\streamtuner2'
  },
  @{
    title  = "Startmenu help.chm"
    cmd    = 'Make-Shortcut -dir "$StartMenu\Streamtuner2" -name Help.lnk -target $UsrFolder\share\streamtuner2\help\help.chm'
  },
  @{
    title  = "Startmenu uninstall"
    cmd    = 'Make-Shortcut -dir "$StartMenu\Streamtuner2" -name Uninstall.lnk -target $UninstallPath'
  },
  @{
    title  = "Startmenu Internet"

    cmd    = 'Make-Shortcut -dir "$StartMenu\Streamtuner2" -name "Streamtuner2 on the Web.lnk" -target "$AboutLink"'

  },
  @{
    title  = "Startmenu Reconfigure"

    cmd    = 'Make-Shortcut -dir "$StartMenu\Streamtuner2\Advanced" -name "Reconfigure.lnk" -target $ModifyPath'

  },
  @{
    title  = "Startmenu RunDebug"

    cmd    = 'Make-Shortcut -dir "$StartMenu\Streamtuner2\Advanced" -name "Run in debug mode.lnk" -target $PYTHON\python.exe -arg "$UsrFolder\bin\streamtuner2" -parm "-D"'

  },
  @{
    title  = "Startmenu RunConsole"

    cmd    = 'Make-Shortcut -dir "$StartMenu\Streamtuner2\Advanced" -name "Run with console.lnk" -target $PYTHON\python.exe -arg "$UsrFolder\bin\streamtuner2"'

  },
  @{
    title  = "Startmenu ResetPrefs"

    cmd    = 'Make-Shortcut @task'
       dir = "$StartMenu\Streamtuner2\Advanced"

      name = "Reset preferences.lnk"
    target = "$ResetPrefsPath"
  },
  @{
    title  = "FINISHED"

  }
)



#-- startup messages
function Display-Logo {
    Write-Host -b DarkBlue @"

        $host.UI.RawUI.set_bufferSize($MyBuffer)
        $host.UI.RawUI.set_windowSize($MyWindow)
    }
}

#-- create Desktop/Startmenu shortcuts
function Make-Shortcut {

    param($dir, $name, $target, $arg=$false, $parm=$false, [parameter(ValueFromRemainingArguments)]$kwargs)
    if (!(Test-Path -Path $dir)) {
        New-Item -Path $dir -ItemType directory > $null
    }
    $wsh = New-Object -ComObject WScript.Shell
    if (!$wsh) { return }
    $lnk = $wsh.CreateShortcut("$dir\$name")
    $lnk.TargetPath = $target
    if ($arg) {
        ($lnk.Arguments =  '"'+$arg+'"') | %{if ($parm) {$lnk.Arguments += " $parm"}}
        $lnk.IconLocation = "$IconPath"
        $lnk.WorkingDirectory = "$UsrFolder\bin"
    }
    $lnk.Save()
}

#-- create uninstall script and registry key

    return $PYTHON
}

#-- check prereqs installation
function Check-Prerequisites {
    [CmdletBinding()]
    param($result = 1)
    ForEach ($t in $tasks) {
        $t.found = 0
        $t.testpth = $t.testpth -replace "{PYTHON}","$PYTHON"




        if (!$t.regkey -and !$t.testpth) {
            continue
        }
        if ($t.prescn) {  # expression for e.g. registry → path lookup
            Invoke-Expression $t.prescn  # should set $_found + global $PLACEHOLDER variable
        }
        elseif ($t.testpth) {
            if (Test-Path $t.testpth) {
                $t.found = $t.testpth
            }
            elseif ($t.regkey -and (Test-Path $t.regkey)) {
                $t.found = "installer/registry"
            }
        }
        if (!$t.found) {
            if ((!$t.is_opt) -or ($optionalInstall)) {
                Write-Host "   - $($t.title) not found"
                $result = 0;
            }
        }
        else {
            Write-Host -n "   + $($t.title) found "  # and display shortened path:
            Write-Host -f DarkGray "($($t.found -replace '(?<!^.{1,4})(\\[^\\]+(?=\\)){2,5}(?!.?$)', '...'))"
        }
    }
    if ($result) {
        Write-Host -f Yellow @"
`nAll required Python components are already installed.
Use 'none', 'skip' or 'S' to skip them. Or just press ENTER on each prompt.
If you want to reinstall them though, use 'all' or 'reinstall' or 'R'.`n
"@
    }
    else {
        Write-Host ""
        Write-Host -f Yellow "Setup is ready for installation now."
    }
    Any-Key Green
}

#-- Operates on parameters of each hash from `$tasks`
#
#  · $title   → print current step
#  · $url     → download from given link, keep as local `$file`
#  · $cmd     → instead of running file, run a custom command

#  · $args    → used for MSI installation
#  · $testpth → check for exisiting dir/file
#  · $regkey  → set registry key if successful
#  · $is_opt  → run as expression


#  · $prescn  → used in check-prereq()
#
filter Run-Task {

    # extract flags/vars from $tasks pipe

    $title=""; $cmd=""; $url=""; $args=""; $testpth=""; $regkey=""; $is_opt=""; $prescn=""; $_found=""
    ($task = $_).GetEnumerator() | % { Set-Variable -Scope Local -Name $_.key -Value ([regex]::Replace($_.value, "[#{](\w+)[}#]", { param($m) Invoke-Expression ("$"+$m.Groups[1].Value) })) }




    # skip optionals
    if ($is_opt -AND !(Invoke-Expression $is_opt)) { return }

    # print step
    if ($title -match "\d+\.\d+") { $title = "Installing $title" }
    Write-Host -b DarkBlue "`n $title `n"
    chdir($TEMP);

    # test if element (file path or registry key) already exists:
    if ($testpth -AND ($reinstall -ne "all") -AND (Test-Path -Path $testpth)) {
        Write-Host -f DarkGreen -NoNewline " → Is already present."
        if ($reinstall -eq "none") { return }
        Switch -regex ( Ask "   Reinstall [y/N/all/none]? " ) {
            "^all|always|re|^A" { $reinstall = "all"; break }
            "never|none|skip|^S" { $reinstall = "none"; return }
            "^y|yes|1|go|^R" { break } # YES
            ".*" { return } # everything else counts as NO
        }
    }

    # get "filename" part from url
    $file = [regex]::match($url, "/([^/]+?)([\?\#]|$)").Groups[1].Value;

    # download

            if (!($file)) {
                $cmd = "& `"$PYTHON\Scripts\easy_install.exe`" $url" #"
            }
            else {
                $cmd = "& `"$PYTHON\Scripts\easy_install.exe`" $TEMP\$file" #"
            }
        }
        Write-Host -f Yellow " → $cmd"
        Invoke-Expression "$cmd"
    }
    # msi
    elseif ($file -match ".+.msi$") {
        Write-Host -f DarkGray (" → msiexec /i " + "$file " + $args)
        Start-Process -Wait msiexec -ArgumentList /i,"$TEMP\$file", $args
        if ($regkey) {

    # other files
    elseif ($file) {
        echo " → $file"
        & "$TEMP\$file"
    }
}



#-- run through tasks
Clear-Host
$host.ui.RawUI.BackgroundColor = ($bckgrnd = 'Black')
Console-MaxHeight
Display-Logo
Check-Package
$PYTHON = Check-PythonInstall
$reuseCachedFiles, $optionalInstall = Ask-First
Check-Prerequisites
$tasks | Run-Task  # <-- main loop: process all commands
Any-Key Green

cd /d "%~dp0"

if NOT "%cd%" == "%TEMP%" (
	copy "%UsrFolder%\share\streamtuner2\dev\uninstall.cmd" "%temp%\STuninst.cmd" 
	"%temp%\STuninst.cmd"
)

tasklist /fi "Imagename eq python.exe" /fi "Windowtitle eq Streamtuner2*" /v | find "Streamtuner2" >nul
if %errorlevel% EQU 0 goto ST2isRunning
tasklist /fi "Imagename eq pythonw.exe" /fi "Windowtitle eq Streamtuner2*" /v | find "Streamtuner2" >nul
if %errorlevel% EQU 1 goto NotRunning

:ST2isRunning
echo Streamtuner2 is still running!
echo Please close all instances of Streamtuner2 before uninstalling!
pause
exit



:NotRunning
echo | set /p=Do you want to uninstall Streamtuner2 for Windows? [y/N]
set /P INPUT=%=%
If /I NOT '%INPUT%' == 'Y' exit

echo | set /p=Do you want to keep your Streamtuner2 settings? [Y/n]
set /P INPUT=%=%
If /I '%INPUT%' == 'N' (
	echo Deleting personal settings...
	del "%Userprofile%\AppData\Roaming\streamtuner2\*.*" /F /S /Q 1>nul
)
set INPUT=

if '"%StreamripperFolder%"' NEQ '' ( 
	echo | set /p=Do you want to uninstall Streamripper? [y/N]
	goto uninstallSR
)

	rd "%Python%"  /S /Q
)

echo Removing Streamtuner2
rd "%installFolder%" /S /Q

echo Removing shortcuts
rd "%USERPROFILE%\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Streamtuner2" /S /Q 1>nul
del "%USERPROFILE%\Desktop\Streamtuner2.lnk" 1>nul

reg delete HKCU\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\Streamtuner2 /f 1>nul  2>&1

echo Finished uninstalling Streamtuner2
pause