functions.ps1
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#region private functions #define an internal function to download the file Function DL { [cmdletbinding(SupportsShouldProcess)] Param([string]$Source, [string]$Destination, [string]$hash, [switch]$Passthru) Write-Verbose "[DL] $Source to $Destination" if ($pscmdlet.ShouldProcess($Destination, "Downloading $source")) { Invoke-Webrequest -Uri $source -UseBasicParsing -DisableKeepAlive -OutFile $Destination Write-Verbose "[DL] Comparing file hash to $hash" $f = Get-FileHash -Path $Destination -Algorithm SHA256 if ($f.hash -ne $hash) { Write-Warning "Hash mismatch. $Destination may be incomplete." } if ($passthru) { Get-Item $Destination } } #should process } #DL Function GetData { [cmdletbinding()] Param( [switch]$Preview ) $uri = "https://api.github.com/repos/powershell/powershell/releases" Write-Verbose "[PROCESS] Getting current release information from $uri" $get = Invoke-Restmethod -uri $uri -Method Get -ErrorAction stop if ($Preview) { Write-Verbose "[PROCESS] Getting latest preview" ($get).where( {$_.prerelease}) | Select-Object -first 1 } else { Write-Verbose "[PROCESS] Getting latest stable release" ($get).where( { -NOT $_.prerelease}) | Select-Object -first 1 } } #endregion #region public functions Function Get-PSReleaseCurrent { [cmdletbinding()] [OutputType("PSCustomObject")] Param( [Parameter(HelpMessage = "Get the latest preview release")] [switch]$Preview ) Begin { Write-Verbose "[BEGIN ] Starting: $($MyInvocation.Mycommand)" } #begin Process { $data = GetData @PSBoundParameters #get the local version from the GitCommitID on v6 platforms #or PSVersion table for everything else if ($PSVersionTable.ContainsKey("GitCommitID")) { $local = $PSVersionTable.GitCommitID } else { $Local = $PSVersionTable.PSVersion } if ($data.tag_name) { [pscustomobject]@{ Name = $data.name Version = $data.tag_name Released = $($data.published_at -as [datetime]) LocalVersion = $local } } } #process End { Write-Verbose "[END ] Ending: $($MyInvocation.Mycommand)" } #end } Function Get-PSReleaseSummary { [cmdletbinding()] [OutputType([System.String[]])] Param( [Parameter(HelpMessage = "Display as a markdown document")] [switch]$AsMarkdown, [Parameter(HelpMessage = "Get the latest preview release")] [switch]$Preview ) Begin { Write-Verbose "[BEGIN ] Starting: $($MyInvocation.Mycommand)" } #begin Process { if ($Preview) { $data = GetData -Preview } else { $data = GetData } $dl = $data.assets | Select-Object @{Name = "Filename"; Expression = {$_.name}}, @{Name = "Updated"; Expression = {$_.updated_at -as [datetime]}}, @{Name = "SizeMB"; Expression = {$_.size / 1MB -as [int]}} if ($AsMarkdown) { #create a markdown table from download data $tbl = (($DL | Convertto-CSV -notypeInformation -delimiter "|").Replace('"', '') -Replace '^', "|") -replace "$", "|`n" $out = @" # $($data.Name.trim()) $($data.body.trim()) ## Downloads $($tbl[0])|---|---|---| $($tbl[1..$($tbl.count)]) Published: $($data.Published_At -as [datetime]) "@ } else { #create a here string for the details $out = @" ----------------------------------------------------------- $($data.Name) Published: $($data.Published_At -as [datetime]) ----------------------------------------------------------- $($data.body) ------------- | Downloads | ------------- $($DL | Out-String) "@ } #write the string to the pipeline $out } #process End { Write-Verbose "[END ] Ending: $($MyInvocation.Mycommand)" } #end } Function Save-PSReleaseAsset { [cmdletbinding(DefaultParameterSetName = "All", SupportsShouldProcess)] [OutputType([System.IO.FileInfo])] Param( [Parameter(Position = 0, HelpMessage = "Where do you want to save the files?")] [ValidateScript( { if (Test-Path $_) { $True } else { Throw "Cannot validate path $_" } })] [string]$Path = ".", [Parameter(ParameterSetName = "All")] [switch]$All, [Parameter(ParameterSetName = "Family", Mandatory)] [ValidateSet("Rhel", "Raspbian", "Ubuntu", "Debian", "Windows", "AppImage", "Arm", "MacOS")] [ValidateNotNullorEmpty()] [string[]]$Family, [Parameter(ParameterSetName = "file", ValueFromPipeline)] [object]$Asset, [switch]$Passthru, [Parameter(HelpMessage = "Get the latest preview release")] [switch]$Preview ) DynamicParam { if ($Family -match 'Windows') { #define a parameter attribute object $attributes = New-Object System.Management.Automation.ParameterAttribute $attributes.ValueFromPipelineByPropertyName = $True $attributes.HelpMessage = "Select a download format" $attributes.ParameterSetName = "Family" $attributes.DontShow = $False $validate = [System.Management.Automation.ValidateSetAttribute]::New("zip", "msi") #define a collection for attributes $attributeCollection = New-Object -Type System.Collections.ObjectModel.Collection[System.Attribute] $attributeCollection.Add($attributes) $attributeCollection.Add($validate) #define the dynamic param $dynParam1 = New-Object -Type System.Management.Automation.RuntimeDefinedParameter("Format", [string], $attributeCollection) #create array of dynamic parameters $paramDictionary = New-Object -Type System.Management.Automation.RuntimeDefinedParameterDictionary $paramDictionary.Add("Format", $dynParam1) #use the array return $paramDictionary } #if } #dynamic parameter Begin { Write-Verbose "[BEGIN ] Starting: $($MyInvocation.Mycommand)" } #begin Process { Write-Verbose "[PROCESS] Using Parameter set $($PSCmdlet.ParameterSetName)" if ($PSCmdlet.ParameterSetName -match "All|Family") { Write-Verbose "[PROCESS] Getting latest releases from $uri" Try { $data = Get-PSReleaseAsset -Preview:$Preview -ErrorAction Stop } Catch { Write-Warning $_.exception.message #bail out Return } } Switch ($PSCmdlet.ParameterSetName) { "All" { Write-Verbose "[PROCESS] Downloading all releases to $Path" foreach ($asset in $data) { Write-Verbose "[PROCESS] ...$($Asset.filename) [$($asset.hash)]" $target = Join-Path -Path $path -ChildPath $asset.filename DL -source $asset.url -Destination $Target -hash $asset.hash -passthru:$passthru } } #all "Family" { #download individual release files Write-Verbose "[PROCESS] Downloading releases for $($family -join ',')" $assets = @() Foreach ($item in $Family) { #"Rhel","Raspbian","Ubuntu","Debian","Windows","AppImage","Arm","MacOS" Switch ($item) { "Windows" { $assets += $data.where( {$_.filename -match 'win-x\d{2}'})} "Rhel" { $assets += $data.where( {$_.filename -match 'rhel'}) } "Raspbian" { $assets += $data.where( {$_.filename -match 'linux'})} "Debian" { $assets += $data.where( {$_.filename -match 'debian'}) } "MacOS" { $assets += $data.where( {$_.filename -match 'osx'}) } "Ubuntu" { $assets += $data.where( {$_.filename -match 'ubuntu'}) } "Arm" { $assets += $data.where( {$_.filename -match '-arm\d{2}'}) } "AppImage" { $assets += $data.where( {$_.filename -match 'appimage'}) } } #Switch if (($assets.family -eq 'Windows') -AND ($PSBoundParameters.ContainsKey("Format"))) { $type = $PSBoundParameters["format"] Write-Verbose "[PROCESS] Limiting download to $type files" $assets = $assets.Where( {$_.filename -match "$type$"}) } foreach ($asset in $Assets) { Write-Verbose "[PROCESS] ...$($Asset.filename) [$($asset.hash)]" $target = Join-Path -Path $path -ChildPath $asset.fileName DL -source $asset.url -Destination $Target -hash $asset.hash -passthru:$passthru } #foreach asset } #foreach family name } #Family "File" { Write-Verbose "[PROCESS] ...$($asset.filename) [$($asset.hash)]" $target = Join-Path -Path $path -ChildPath $asset.fileName DL -source $asset.url -Destination $Target -hash $asset.hash -passthru:$passthru } #file } #switch parameter set name } #process End { Write-Verbose "[END ] Ending: $($MyInvocation.Mycommand)" } #end } Function Get-PSReleaseAsset { [cmdletbinding()] [OutputType("PSCustomObject")] Param( [ValidateSet("Rhel", "Raspbian", "Ubuntu", "Debian", "Windows", "AppImage", "Arm", "MacOS")] [string[]]$Family, [alias("x64")] [switch]$Only64Bit, [Parameter(HelpMessage = "Get the latest preview release")] [switch]$Preview ) Begin { Write-Verbose "[BEGIN ] Starting: $($MyInvocation.Mycommand)" } #begin Process { Try { if ($Preview) { $data = GetData -Preview -ErrorAction stop } else { $data = GetData -ErrorAction stop } #parse out file names and hashes [regex]$rx = "(?<file>[p|P]ower[s|S]hell[-|_]\d.*)\s+-\s+(?<hash>\w+)" $r = $rx.Matches($data.body) $r | ForEach-Object -Begin { $h = @{} } -process { $h.add($_.groups["file"].value.trim(), $_.groups["hash"].value.trim()) } Write-Verbose "[PROCESS] Found $($data.assets.count) downloads" $assets = $data.assets | Select-Object @{Name = "FileName"; Expression = {$_.Name}}, @{Name = "Family"; Expression = { Switch -regex ($_.name) { "Win-x\d{2}" {"Windows"} "arm\d{2}.zip" {"Arm"} "Ubuntu" {"Ubuntu"} "osx" {"MacOS"} "debian" {"Debian"} "appimage" {"AppImage"} "rhel" {"Rhel"} "linux" {"Raspbian"} } } }, @{Name = "Format"; Expression = { $_.name.split(".")[-1] } }, @{Name = "SizeMB"; Expression = {$_.size / 1MB -as [int32]}}, @{Name = "Hash"; Expression = {$h.item($_.name)}}, @{Name = "Created"; Expression = {$_.Created_at -as [datetime]}}, @{Name = "Updated"; Expression = {$_.Updated_at -as [datetime]}}, @{Name = "URL"; Expression = {$_.browser_download_Url}}, @{Name = "DownloadCount"; Expression = {$_.download_count}} if ($Family) { Write-Verbose "[PROCESS] Filtering by family" $assets = $assets.where({$_.family -match $($family -join "|")}) } if ($Only64Bit) { Write-Verbose "[PROCESS] Filtering for 64bit" $assets = ($assets).where({$_.filename -match "(x|amd)64"}) } #write the results to the pipeline $assets } #Try catch { Throw $_ } } #process End { Write-Verbose "[END ] Ending: $($MyInvocation.Mycommand)" } #end } #endregion |