Public/Install-DotNetSDK.ps1

<#
    .SYNOPSIS
        Installs the .Net SDK on Windows or Linux. Compatible with Windows PowerShell 5.1 and PowerShell Core.
 
    .DESCRIPTION
        See .SYNOPSIS
 
    .NOTES
 
    .EXAMPLE
        # Launch PowerShell and ...
 
        PS C:\Users\zeroadmin> Install-DotNetSDK
#>

function Install-DotNetSDK {
    [CmdletBinding()]
    Param ()

    if ($PSVersionTable.Platform -eq "Unix" -or $PSVersionTable.OS -match "Darwin" -and $env:SudoPwdPrompt) {
        if (GetElevation) {
            Write-Error "You should not be running the $($MyInvocation.MyCommand.Name) function as root! Halting!"
            $global:FunctionResult = "1"
            return
        }
        RemoveMySudoPwd
        NewCronToAddSudoPwd
        $env:SudoPwdPrompt = $False
    }
    if (!$PSVersionTable.Platform -or $PSVersionTable.Platform -eq "Win32NT") {
        if (!$(GetElevation)) {
            Write-Error "The $($MyInvocation.MyCommand.Name) function must be run from an elevated PowerShell session! Halting!"
            $global:FunctionResult = "1"
            return
        }
    }

    if (!$PSVersionTable.Platform -or $PSVersionTable.Platform -eq "Win32NT") {
        try {
            $null = Install-Program -ProgramName dotnetcore-sdk -CommandName dotnet.exe -ErrorAction Stop
        }
        catch {
            Write-Error $_
            $global:FunctionResult = "1"
            return
        }

        # Make sure $env:PATH is updated
        $DotNetExeDir = "C:\Program Files\dotnet"
        [System.Collections.Arraylist][array]$CurrentEnvPathArray = $env:PATH -split ';' | Where-Object {![System.String]::IsNullOrWhiteSpace($_)} | Sort-Object | Get-Unique
        if ($CurrentEnvPathArray -notcontains $DotNetExeDir) {
            $CurrentEnvPathArray.Insert(0,$DotNetExeDir)
            $env:PATH = $CurrentEnvPathArray -join ';'
        }

        $DotNetCommandInfo = Get-Command dotnet
    }
    if ($PSVersionTable.Platform -eq "Unix" -or $PSVersionTable.OS -match "Darwin") {
        $HostNameCtlInfo = hostnamectl
        $OSVersionCheckPrep = $HostNameCtlInfo -match "Operating System:"
        $ArchitectureCheck = $HostNameCtlInfo -match "Architecture:"
        switch ($OSVersionCheckPrep) {
            {$_ -match "18\.04"} {
                $OSVerCheck = 'Ubuntu 18.04'
                $MicrosoftUrl = "https://packages.microsoft.com/config/ubuntu/18.04/packages-microsoft-prod.deb"
            }
            {$_ -match "16\.|16\.04"} {
                $OSVerCheck = 'Ubuntu 16.04'
                $MicrosoftUrl = "https://packages.microsoft.com/config/ubuntu/16.04/packages-microsoft-prod.deb"
            }
            {$_ -match "14\.|14\.04"} {
                $OSVerCheck = 'Ubuntu 14.04'
                $MicrosoftUrl = "https://packages.microsoft.com/config/ubuntu/14.04/packages-microsoft-prod.deb"
            }
            {$_ -match "stretch"} {
                $OSVerCheck = 'Debian 9'
                $MicrosoftUrl = "https://packages.microsoft.com/config/debian/9/prod.list"
            }
            {$_ -match "jessie"} {
                $OSVerCheck = 'Debian 8'
                $MicrosoftUrl = "https://packages.microsoft.com/config/debian/8/prod.list"
            }
            {$_ -match "CentOS.*7"} {
                $OSVerCheck = 'CentOS 7'
                $MicrosoftUrl = "https://packages.microsoft.com/config/rhel/7/packages-microsoft-prod.rpm"
            }
            {$_ -match "openSUSE.*42"} {
                $OSVerCheck = 'openSUSE 42'
                $MicrosoftUrl = "https://packages.microsoft.com/config/opensuse/42.2/prod.repo"
            }
        }

        if (!$MicrosoftUrl) {
            Write-Error "Unable to identify Linux OS Version! Halting!"
            $global:FunctionResult = "1"
            return
        }
        
        if ($OSVerCheck -match "openSUSE" -and ![bool]$($ArchitectureCheck -match "arm")) {
            try {
                $SBAsString = @(
                    'Write-Host "`nOutputStartsBelow`n"'
                    'try {'
                    ' rpm --import https://packages.microsoft.com/keys/microsoft.asc'
                    ' zypper --non-interactive ar --gpgcheck-allow-unsigned-repo https://packages.microsoft.com/rhel/7/prod/ microsoft'
                    ' zypper --non-interactive update'
                    ' rpm -ivh --nodeps https://packages.microsoft.com/rhel/7/prod/dotnet-sdk-2.1.500-x64.rpm'
                    " Get-Command dotnet -ErrorAction Stop | ConvertTo-Json -Depth 3"
                    '}'
                    'catch {'
                    ' @("ErrorMsg",$_.Exception.Message) | ConvertTo-Json -Depth 3'
                    '}'
                )
                $SBAsString = $SBAsString -join "`n"
                $DotNetInstallPrep = SudoPwsh -CmdString $SBAsString

                if ($DotNetInstallPrep.Output -match "ErrorMsg") {
                    throw $DotNetInstallPrep.Output[-1]
                }
                if ($DotNetInstallPrep.OutputType -eq "Error") {
                    if ($DotNetInstallPrep.Output -match "ErrorMsg") {
                        throw $DotNetInstallPrep.Output[-1]
                    }
                    else {
                        throw $DotNetInstallPrep.Output
                    }
                }
                $DotNetCommandInfo = $DotNetInstallPrep.Output
            }
            catch {
                Write-Error $_
                $global:FunctionResult = "1"
                return
            }
        }
        
        if ($OSVerCheck -match "CentOS" -and ![bool]$($ArchitectureCheck -match "arm")) {
            try {
                $SBAsString = @(
                    'Write-Host "`nOutputStartsBelow`n"'
                    'try {'
                    " curl https://packages.microsoft.com/config/rhel/7/prod.repo | sudo tee /etc/yum.repos.d/microsoft.repo"
                    ' yum update -y'
                    ' yum install dotnet-sdk-2.1 -y'
                    " Get-Command dotnet -ErrorAction Stop | ConvertTo-Json -Depth 3"
                    '}'
                    'catch {'
                    ' @("ErrorMsg",$_.Exception.Message) | ConvertTo-Json -Depth 3'
                    '}'
                )
                $SBAsString = $SBAsString -join "`n"
                $DotNetInstallPrep = SudoPwsh -CmdString $SBAsString

                if ($DotNetInstallPrep.Output -match "ErrorMsg") {
                    throw $DotNetInstallPrep.Output[-1]
                }
                if ($DotNetInstallPrep.OutputType -eq "Error") {
                    if ($DotNetInstallPrep.Output -match "ErrorMsg") {
                        throw $DotNetInstallPrep.Output[-1]
                    }
                    else {
                        throw $DotNetInstallPrep.Output
                    }
                }
                $DotNetCommandInfo = $DotNetInstallPrep.Output
            }
            catch {
                Write-Error $_
                $global:FunctionResult = "1"
                return
            }
        }

        if ($OSVerCheck -match "Ubuntu" -and ![bool]$($ArchitectureCheck -match "arm")) {
            try {
                $SBAsString = @(
                    'Write-Host "`nOutputStartsBelow`n"'
                    'try {'
                    ' apt-get install -y apt-transport-https'
                    " wget -q $MicrosoftUrl"
                    ' dpkg -i packages-microsoft-prod.deb'
                    ' apt-get update'
                    ' apt-get install -y dotnet-sdk-2.1'
                    " Get-Command dotnet -ErrorAction Stop | ConvertTo-Json -Depth 3"
                    '}'
                    'catch {'
                    ' @("ErrorMsg",$_.Exception.Message) | ConvertTo-Json -Depth 3'
                    '}'
                )
                $SBAsString = $SBAsString -join "`n"
                $DotNetInstallPrep = SudoPwsh -CmdString $SBAsString

                if ($DotNetInstallPrep.Output -match "ErrorMsg") {
                    throw $DotNetInstallPrep.Output[-1]
                }
                if ($DotNetInstallPrep.OutputType -eq "Error") {
                    if ($DotNetInstallPrep.Output -match "ErrorMsg") {
                        throw $DotNetInstallPrep.Output[-1]
                    }
                    else {
                        throw $DotNetInstallPrep.Output
                    }
                }
                $DotNetCommandInfo = $DotNetInstallPrep.Output
            }
            catch {
                Write-Error $_
                $global:FunctionResult = "1"
                return
            }
        }

        if ($OSVerCheck -match "Ubuntu" -and $ArchitectureCheck -match "arm") {
            try {
                $SBAsString = @(
                    'Write-Host "`nOutputStartsBelow`n"'
                    'try {'
                    ' apt-get -y update'
                    ' sudo apt-get -y install libunwind8 gettext'
                    ' wget https://download.microsoft.com/download/8/8/5/88544F33-836A-49A5-8B67-451C24709A8F/dotnet-sdk-2.1.300-linux-arm.tar.gz'
                    #' wget https://dotnetcli.blob.core.windows.net/dotnet/aspnetcore/Runtime/2.1.0/aspnetcore-runtime-2.1.0-linux-arm.tar.gz'
                    ' mkdir /opt/dotnet'
                    ' tar -xvf dotnet-sdk-2.1.300-linux-arm.tar.gz -C /opt/dotnet/'
                    #' tar -xvf aspnetcore-runtime-2.1.0-linux-arm.tar.gz -C /opt/dotnet/'
                    ' ln -s /opt/dotnet/dotnet /usr/local/bin'
                    " Get-Command dotnet -ErrorAction Stop | ConvertTo-Json -Depth 3"
                    '}'
                    'catch {'
                    ' @("ErrorMsg",$_.Exception.Message) | ConvertTo-Json -Depth 3'
                    '}'
                )
                $SBAsString = $SBAsString -join "`n"
                $DotNetInstallPrep = SudoPwsh -CmdString $SBAsString

                if ($DotNetInstallPrep.Output -match "ErrorMsg") {
                    throw $DotNetInstallPrep.Output[-1]
                }
                if ($DotNetInstallPrep.OutputType -eq "Error") {
                    if ($DotNetInstallPrep.Output -match "ErrorMsg") {
                        throw $DotNetInstallPrep.Output[-1]
                    }
                    else {
                        throw $DotNetInstallPrep.Output
                    }
                }
                $DotNetCommandInfo = $DotNetInstallPrep.Output
            }
            catch {
                Write-Error $_
                $global:FunctionResult = "1"
                return
            }
        }

        if ($OSVerCheck -match "Debian" -and ![bool]$($ArchitectureCheck -match "arm")) {
            if ($OSVerCheck -eq "Debian 9") {
                $AddAptSource = " sh -c 'echo `"deb [arch=amd64] https://packages.microsoft.com/repos/microsoft-debian-stretch-prod stretch main`" > /etc/apt/sources.list.d/microsoft.list'"
            }
            elseif ($OSVerCheck -eq "Debian 8") {
                $AddAptSource = " sh -c 'echo `"deb [arch=amd64] https://packages.microsoft.com/repos/microsoft-debian-jessie-prod jessie main`" > /etc/apt/sources.list.d/microsoft.list'"
            }

            try {
                $SBAsString = @(
                    'Write-Host "`nOutputStartsBelow`n"'
                    'try {'
                    ' apt-get install -y curl gnupg apt-transport-https ca-certificates'
                    ' curl https://packages.microsoft.com/keys/microsoft.asc | sudo apt-key add -'
                    $AddAptSource
                    ' apt-get update'
                    ' sudo apt-get install -y dotnet-sdk-2.1'
                    " Get-Command dotnet -ErrorAction Stop | ConvertTo-Json -Depth 3"
                    '}'
                    'catch {'
                    ' @("ErrorMsg",$_.Exception.Message) | ConvertTo-Json -Depth 3'
                    '}'
                )
                $SBAsString = $SBAsString -join "`n"
                $DotNetInstallPrep = SudoPwsh -CmdString $SBAsString

                if ($DotNetInstallPrep.Output -match "ErrorMsg") {
                    throw $DotNetInstallPrep.Output[-1]
                }
                if ($DotNetInstallPrep.OutputType -eq "Error") {
                    if ($DotNetInstallPrep.Output -match "ErrorMsg") {
                        throw $DotNetInstallPrep.Output[-1]
                    }
                    else {
                        throw $DotNetInstallPrep.Output
                    }
                }
                $DotNetCommandInfo = $DotNetInstallPrep.Output
            }
            catch {
                Write-Error $_
                $global:FunctionResult = "1"
                return
            }
        }
    }

    $DotNetCommandInfo
}