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pjmagee/install.ps1

Last active June 14, 2024 17:08
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install.ps1
#Requires -Version 7.0
Param (
[Parameter(Mandatory = $false)][System.Management.Automation.SemanticVersion]$DaggerVersion,
[Parameter(Mandatory = $false)][string][ValidatePattern("^[0-9a-fA-F]{40}$")]$DaggerCommit,
[Parameter(Mandatory = $false)][string]$DownloadPath = [System.IO.Path]::GetTempFileName(),
[Parameter(Mandatory = $false)][string]$InstallPath = "$env:USERPROFILE\dagger",
[Parameter(Mandatory = $false)][System.Boolean]$AddToPath = $false,
[Parameter(Mandatory = $false)][switch]$Interactive = $false
)
# ---------------------------------------------------------------------------------
# Author: Alessandro Festa
# Co Author: Brittan DeYoung
# Dagger Installation Utility for the windows dagger.exe binary
# ---------------------------------------------------------------------------------
# This function prompts the user for a download location and validates it.
function Get-DownloadPath {
$defaultPath = $DownloadPath
while ($true) {
$inputPath = Read-Host -Prompt "Enter the download location or leave empty and hit Enter for default ($defaultPath)"
if ([string]::IsNullOrWhiteSpace($inputPath)) {
return $defaultPath
}
elseif (Test-Path $inputPath -IsValid) {
return $inputPath
}
else {
Write-Host "Invalid path: $inputPath. Please enter a valid path."
}
}
}
function Get-ProcessorArchitecture {
$arch = $env:PROCESSOR_ARCHITECTURE
switch ($arch) {
"AMD64" {
return "amd64"
}
"ARM64" {
return "arm64"
}
"ARM" {
return "armv7"
}
default {
throw "Unsupported architecture: $arch"
}
}
}
function Get-ValidPath {
Param (
[Parameter(Mandatory = $true)]
[string]$Message,
[Parameter(Mandatory = $true)]
[string]$Default
)
$path = $null
while ($null -eq $path) {
$path = Read-Host -Prompt $Message
if ([string]::IsNullOrWhiteSpace($path)) {
return $Default
}
else {
if ((Test-Path $path -IsValid) -and (Test-Path $path -IsValid -PathType Leaf)) {
return $path
}
else {
Write-Host "Invalid path: $path. Please enter a valid path."
$path = $null
}
}
}
}
function Confirm-GitCommit {
# Check if the hash matches the basic pattern of a Git commit hash
if (-not ([string]::IsNullOrWhiteSpace($DaggerCommit)) -and $DaggerCommit -match '^[0-9a-fA-F]{40}$') {
Write-Host @"
---------------------------------------------------------------------------
The commit hash provided does not seem to be a valid Git commit hash.
Please provide a valid Git commit hash.
---------------------------------------------------------------------------
"@
exit 1
}
}
function Get-DownloadUrl {
$fileName = Get-FileName
if (-not [string]::IsNullOrWhiteSpace($DaggerCommit)) {
return "https://dl.dagger.io/dagger/main/${DaggerCommit}/${fileName}"
}
return "https://dl.dagger.io/dagger/releases/${DaggerVersion}/${fileName}"
}
# Used for interactive mode to get a true or false response from the user
function Get-TrueFalse {
Param (
[Parameter(Mandatory = $true)][string]$Message,
[Parameter(Mandatory = $true)][bool]$Default
)
$response = ""
while ($response -notmatch "^(y|n)$") {
$response = Read-Host -Prompt $Message
if ([string]::IsNullOrWhiteSpace($response)) {
$response = $Default ? "y" : "n"
break
}
}
return $response.StartsWith("y")
}
function Find-LatestVersion {
$body = $null
$response = Invoke-RestMethod "https://dl.dagger.io/dagger/latest_version" -Body $body -ErrorVariable LatestVersionError
if ($LatestVersionError) {
Write-Host
@"
---------------------------------------------------------------------------
Houston we have a problem!
Apparently we had an issue finding the latest version of Dagger.
Please check https://docs.dagger.io/install
----------------------------------------------------------------------------
"@
exit 1
}
$latestVersion = $response -replace "v", ""
Write-Host "Latest version of Dagger is v$latestVersion"
return [System.Management.Automation.SemanticVersion]::Parse($latestVersion)
}
# This function returns the file name of the Dagger zip file to download.
function Get-FileName {
$arch = Get-ProcessorArchitecture
if (-not [string]::IsNullOrWhiteSpace($DaggerCommit)) {
return "dagger_${DaggerCommit}_windows_${arch}.zip"
}
return "dagger_v${DaggerVersion}_windows_${arch}.zip"
}
# This function prompts the user for a version string and validates it.
$semVerPattern = "^(0|[1-9]\d*)\.(0|[1-9]\d*)\.(0|[1-9]\d*)$"
function Get-SemVer {
Param (
[Parameter(Mandatory = $true)]
[string]$Message,
[Parameter(Mandatory = $true)]
[System.Management.Automation.SemanticVersion] $Default
)
$version = $null
while ($null -eq $version) {
$inputString = Read-Host -Prompt $Message
if ([string]::IsNullOrWhiteSpace($inputString)) {
return $Default
}
$isValid = [System.Management.Automation.SemanticVersion]::TryParse($inputString, [ref]$version) -and $inputString -match $semVerPattern
if (-not $isValid) {
$version = $null
Write-Host "Invalid version string: $inputString. Please enter a valid semantic version (e.g., 0.11.6)."
}
elseif ($isvalid -and $version -gt $Default) {
$version = $null
Write-Host "Please enter a valid version."
}
}
return $version
}
# This gets a full path name from the install path i.e C:\users\username\dagger
function Get-InstallPath {
if (-not (Test-Path $InstallPath)) {
New-Item -ItemType Directory -Path $InstallPath -ErrorAction Stop -ErrorVariable InstallPathError | Out-Null
if ($InstallPathError) {
Write-Host @"
---------------------------------------------------------------------------
Whoops, apparently we had an issue in creating the install path.
Please check you have the right permission to do so or try to create the path manually.
---------------------------------------------------------------------------
"@
exit 1
}
}
return (Get-Item -Path $InstallPath).FullName
}
function Main {
# Powershell is cross-platform, notice about windows binary when used on non-windows
if (-not $IsWindows) {
Write-Host @"
---------------------------------------------------------------------------
Note: This script will install the Windows binary of Dagger.
---------------------------------------------------------------------------
"@
}
# Dagger compiles for AMD64, ARM64, and ARM architectures only
Get-ProcessorArchitecture -ErrorAction Stop -ErrorVariable ArchitectureError | Out-Null
if ($ArchitectureError) {
Write-Host @"
---------------------------------------------------------------------------
Whoops, apparently we had an issue in determining the architecture of your system.
Dagger compiles for AMD64, ARM64, and ARM architectures only.
---------------------------------------------------------------------------
"@
exit 1
}
# If the user does not provide a version, we will find the latest version
if ($null -eq $DaggerVersion) {
$DaggerVersion = Find-LatestVersion
}
# Interactive allows customisation of the installation
if ($Interactive) {
$DaggerVersion = Get-SemVer `
-Message "Enter the Dagger version to install or leave empty and hit Enter for default ($DaggerVersion)" `
-Default $DaggerVersion `
-ErrorVariable InteractiveDaggerVersionError
if ($InteractiveDaggerVersionError) {
Write-Host
@"
---------------------------------------------------------------------------
Whoops, we had an issue in finding the selected version of Dagger.
Please check your internet connection and try again.
---------------------------------------------------------------------------
"@
exit 1
}
$DownloadPath = Get-ValidPath `
-Message "Enter the download location or leave empty and hit Enter for default ($DownloadPath)" `
-Default $DownloadPath `
-ErrorVariable InteractiveDownloadPathError
if ($InteractiveDownloadPathError) {
Write-Host @"
---------------------------------------------------------------------------
Whoops, we had an issue in getting the download path.
Please check the path and try again.
---------------------------------------------------------------------------
"@
exit 1
}
$InstallPath = Get-ValidPath `
-Message "Enter the destination unzip path or leave empty and hit Enter for default ($(Get-InstallPath))" `
-Default $InstallPath `
-ErrorVariable InteractiveInstallPathError
if ($InteractiveInstallPathError) {
Write-Host @"
---------------------------------------------------------------------------
Whoops, we had an issue in getting the install path.
Please check the path and try again.
---------------------------------------------------------------------------
"@
exit 1
}
$defaultString = $AddToPath ? "y" : "n"
$AddToPath = Get-TrueFalse `
-Message "Enter (y/n) to add dagger.exe to your PATH or hit Enter for Default ($defaultString)" `
-Default $AddToPath `
-ErrorVariable InteractiveAddToPathError
if ($InteractiveAddToPathError) {
Write-Host @"
---------------------------------------------------------------------------
Whoops, we had an issue checking if you want to add dagger.exe to your PATH.
Please check the option and try again.
---------------------------------------------------------------------------
"@
exit 1
}
}
$url = Get-DownloadUrl
write-host "Downloading Dagger from $url"
Invoke-RestMethod -Uri $url -OutFile $downloadPath -UserAgent "PowerShell"
Expand-Archive -Path $downloadPath -DestinationPath $InstallPath -Force -ErrorVariable ProcessError
If ($ProcessError) {
Write-Host @"
---------------------------------------------------------------------------
Whoops, apparently we had an issue in unzipping the file, please check
you have the right permission to do so or try to unzip the file manually.
Dagger is currently downloaded at $DownloadPath.
---------------------------------------------------------------------------
"@
}
else {
$installPath = Get-InstallPath
Write-Host @"
---------------------------------------------------------------------------
Thank you for downloading Dagger!
Dagger has been successfully installed at $(Get-InstallPath)
"@
$path = [Environment]::GetEnvironmentVariable("Path", "User")
$existsInPath = $path -like "*$installPath*"
if ($AddToPath) {
if (-not $existsInPath) {
[Environment]::SetEnvironmentVariable("Path", [Environment]::GetEnvironmentVariable("Path", "User") + ";$installPath", "User")
Write-Host "Dagger has been added to your PATH"
} else {
Write-Host "Dagger is already in your PATH"
}
}
else {
if (-not $existsInPath) {
Write-Host "Please add dagger.exe to your PATH in order to use it"
}
}
Write-Host "---------------------------------------------------------------------------"
}
}
$isInvoked = [string]::IsNullOrWhiteSpace($MyInvocation.MyCommand.Path)
if ($isInvoked) {
# Allow Invoke-Expression to customise the installation by producing the function Install-Dagger
# This is because the Param of the Script file is not available unless the script is invoked
function Install-Dagger {
Param (
[Parameter(Mandatory = $false)][System.Management.Automation.SemanticVersion]$DaggerVersion,
[Parameter(Mandatory = $false)][string][ValidatePattern("^[0-9a-fA-F]{40}$")]$DaggerCommit,
[Parameter(Mandatory = $false)][string]$DownloadPath = [System.IO.Path]::GetTempFileName(),
[Parameter(Mandatory = $false)][string]$InstallPath = "$env:HOMEPATH\dagger",
[Parameter(Mandatory = $false)][System.Boolean]$AddToPath = $false,
[Parameter(Mandatory = $false)][switch]$Interactive = $false
)
Main
}
}
else {
Main
}
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