action.yml

name: UseUGit
description: Updated Git
inputs: 
  Run: 
    required: false
    description: |
      A PowerShell Script that uses ugit.  
      Any files outputted from the script will be added to the repository.
      If those files have a .Message attached to them, they will be committed with that message.
  SkipScriptFile: 
    required: false
    description: 'If set, will not process any files named *.ugit.ps1'
  InstallModule: 
    required: false
    description: A list of modules to be installed from the PowerShell gallery before scripts run.
  CommitMessage: 
    required: false
    description: If provided, will commit any remaining changes made to the workspace with this commit message.
  TargetBranch: 
    required: false
    description: |
      If provided, will checkout a new branch before making the changes.
      If not provided, will use the current branch.
  ActionScript: 
    required: false
    default: '''[\/]Examples[\/]*'''
    description: The name of one or more scripts to run, from this action's path.
  GitHubToken: 
    required: false
    default: '{{ secrets.GITHUB_TOKEN }}'
    description: The github token to use for requests.
  UserEmail: 
    required: false
    description: The user email associated with a git commit.  If this is not provided, it will be set to the username@noreply.github.com.
  UserName: 
    required: false
    description: The user name associated with a git commit.
  NoPush: 
    required: false
    description: |
      If set, will not push any changes made to the repository.
      (they will still be committed unless `-NoCommit` is passed)
  NoCommit: 
    required: false
    description: |
      If set, will not commit any changes made to the repository.
      (this also implies `-NoPush`)
branding: 
  icon: git-merge
  color: blue
runs: 
  using: composite
  steps: 
    - name: UGitAction
      id: UGitAction
      shell: pwsh
      env: 
        InstallModule: ${{inputs.InstallModule}}
        GitHubToken: ${{inputs.GitHubToken}}
        NoPush: ${{inputs.NoPush}}
        CommitMessage: ${{inputs.CommitMessage}}
        SkipScriptFile: ${{inputs.SkipScriptFile}}
        Run: ${{inputs.Run}}
        ActionScript: ${{inputs.ActionScript}}
        TargetBranch: ${{inputs.TargetBranch}}
        UserEmail: ${{inputs.UserEmail}}
        NoCommit: ${{inputs.NoCommit}}
        UserName: ${{inputs.UserName}}
      run: |
        $Parameters = @{}
        $Parameters.Run = ${env:Run}
        $Parameters.SkipScriptFile = ${env:SkipScriptFile}
        $Parameters.SkipScriptFile = $parameters.SkipScriptFile -match 'true';
        $Parameters.InstallModule = ${env:InstallModule}
        $Parameters.InstallModule = $parameters.InstallModule -split ';' -replace '^[''"]' -replace  '[''"]$'
        $Parameters.CommitMessage = ${env:CommitMessage}
        $Parameters.TargetBranch = ${env:TargetBranch}
        $Parameters.ActionScript = ${env:ActionScript}
        $Parameters.ActionScript = $parameters.ActionScript -split ';' -replace '^[''"]' -replace  '[''"]$'
        $Parameters.GitHubToken = ${env:GitHubToken}
        $Parameters.UserEmail = ${env:UserEmail}
        $Parameters.UserName = ${env:UserName}
        $Parameters.NoPush = ${env:NoPush}
        $Parameters.NoPush = $parameters.NoPush -match 'true';
        $Parameters.NoCommit = ${env:NoCommit}
        $Parameters.NoCommit = $parameters.NoCommit -match 'true';
        foreach ($k in @($parameters.Keys)) {
            if ([String]::IsNullOrEmpty($parameters[$k])) {
                $parameters.Remove($k)
            }
        }
        Write-Host "::debug:: UGitAction $(@(foreach ($p in $Parameters.GetEnumerator()) {'-' + $p.Key + ' ' + $p.Value}) -join ' ')"
        & {<#
        .Synopsis
            GitHub Action for ugit
        .Description
            GitHub Action for ugit.  This will:
        
            * Import ugit
            * If `-Run` is provided, run that script
            * Otherwise, unless `-SkipScriptFile` is passed, run all *.ugit.ps1 files beneath the workflow directory
              * If any `-ActionScript` was provided, run scripts from the action path that match a wildcard pattern.
        
            If you will be making changes using the GitHubAPI, you should provide a -GitHubToken
            If none is provided, and ENV:GITHUB_TOKEN is set, this will be used instead.
            Any files changed can be outputted by the script, and those changes can be checked back into the repo.
            Make sure to use the "persistCredentials" option with checkout.
        #>
        
        param(
        # A PowerShell Script that uses ugit.  
        # Any files outputted from the script will be added to the repository.
        # If those files have a .Message attached to them, they will be committed with that message.
        [string]
        $Run,
        
        # If set, will not process any files named *.ugit.ps1
        [switch]
        $SkipScriptFile,
        
        # A list of modules to be installed from the PowerShell gallery before scripts run.
        [string[]]
        $InstallModule,
        
        # If provided, will commit any remaining changes made to the workspace with this commit message.
        [string]
        $CommitMessage,
        
        # If provided, will checkout a new branch before making the changes.
        # If not provided, will use the current branch.
        [string]
        $TargetBranch,
        
        # The name of one or more scripts to run, from this action's path.
        [string[]]
        $ActionScript = '[\/]Examples[\/]*',
        
        # The github token to use for requests.
        [string]
        $GitHubToken = '{{ secrets.GITHUB_TOKEN }}',
        
        # The user email associated with a git commit.  If this is not provided, it will be set to the username@noreply.github.com.
        [string]
        $UserEmail,
        
        # The user name associated with a git commit.
        [string]
        $UserName,
        
        # If set, will not push any changes made to the repository.
        # (they will still be committed unless `-NoCommit` is passed)
        [switch]
        $NoPush,
        
        # If set, will not commit any changes made to the repository.
        # (this also implies `-NoPush`)
        [switch]
        $NoCommit
        )
        
        $ErrorActionPreference = 'continue'
        "::group::Parameters" | Out-Host
        [PSCustomObject]$PSBoundParameters | Format-List | Out-Host
        "::endgroup::" | Out-Host
        
        $gitHubEvent = 
            if ($env:GITHUB_EVENT_PATH) {
                [IO.File]::ReadAllText($env:GITHUB_EVENT_PATH) | ConvertFrom-Json
            } else { $null }
        
        $anyFilesChanged = $false
        $ActionModuleName = 'ugit'
        $actorInfo = $null
        
        "::group::Parameters" | Out-Host
        [PSCustomObject]$PSBoundParameters | Format-List | Out-Host
        "::endgroup::" | Out-Host
        
        $checkDetached = git symbolic-ref -q HEAD
        if ($LASTEXITCODE) {
            "::warning::On detached head, skipping action" | Out-Host
            exit 0
        }
        
        function InstallActionModule {
            param([string]$ModuleToInstall)
            $moduleInWorkspace = Get-ChildItem -Path $env:GITHUB_WORKSPACE -Recurse -File |
                Where-Object Name -eq "$($moduleToInstall).psd1" |
                Where-Object { 
                    $(Get-Content $_.FullName -Raw) -match 'ModuleVersion'
                }
            if (-not $moduleInWorkspace) {
                $availableModules = Get-Module -ListAvailable
                if ($availableModules.Name -notcontains $moduleToInstall) {
                    Install-Module $moduleToInstall -Scope CurrentUser -Force -AcceptLicense -AllowClobber
                }
                Import-Module $moduleToInstall -Force -PassThru | Out-Host
            } else {
                Import-Module $moduleInWorkspace.FullName -Force -PassThru | Out-Host
            }
        }
        function ImportActionModule {
            #region -InstallModule
            if ($InstallModule) {
                "::group::Installing Modules" | Out-Host
                foreach ($moduleToInstall in $InstallModule) {
                    InstallActionModule -ModuleToInstall $moduleToInstall
                }
                "::endgroup::" | Out-Host
            }
            #endregion -InstallModule
        
            if ($env:GITHUB_ACTION_PATH) {
                $LocalModulePath = Join-Path $env:GITHUB_ACTION_PATH "$ActionModuleName.psd1"
                if (Test-path $LocalModulePath) {
                    Import-Module $LocalModulePath -Force -PassThru | Out-String
                } else {
                    throw "Module '$ActionModuleName' not found"
                }
            } elseif (-not (Get-Module $ActionModuleName)) {    
                throw "Module '$ActionModuleName' not found"
            }
        
            "::notice title=ModuleLoaded::$ActionModuleName Loaded from Path - $($LocalModulePath)" | Out-Host
            if ($env:GITHUB_STEP_SUMMARY) {
                "# $($ActionModuleName)" |
                    Out-File -Append -FilePath $env:GITHUB_STEP_SUMMARY
            }
        }
        function InitializeAction {
            #region Custom 
            #endregion Custom
        
            # Configure git based on the $env:GITHUB_ACTOR
            if (-not $UserName) { $UserName = $env:GITHUB_ACTOR }
            if (-not $actorID)  { $actorID = $env:GITHUB_ACTOR_ID }
            $actorInfo = 
                if ($GitHubToken -notmatch '^\{{2}' -and $GitHubToken -notmatch '\}{2}$') {
                    Invoke-RestMethod -Uri "https://api.github.com/user/$actorID" -Headers @{ Authorization = "token $GitHubToken" }
                } else {
                    Invoke-RestMethod -Uri "https://api.github.com/user/$actorID"
                }
            
            if (-not $UserEmail) { $UserEmail = "$UserName@noreply.github.com" }
            git config --global user.email $UserEmail
            git config --global user.name  $actorInfo.name
        
            # Pull down any changes
            git pull | Out-Host
        
            if ($TargetBranch) {
                "::notice title=Expanding target branch string $targetBranch" | Out-Host
                $TargetBranch = $ExecutionContext.SessionState.InvokeCommand.ExpandString($TargetBranch)
                "::notice title=Checking out target branch::$targetBranch" | Out-Host
                git checkout -b $TargetBranch | Out-Host    
                git pull | Out-Host
            }
        }
        
        function InvokeActionModule {
            $myScriptStart = [DateTime]::Now
            $myScript = $ExecutionContext.SessionState.PSVariable.Get("Run").Value
            if ($myScript) {
                Invoke-Expression -Command $myScript |
                    . ProcessOutput |
                    Out-Host
                return
            }
            $myScriptTook = [Datetime]::Now - $myScriptStart
            $MyScriptFilesStart = [DateTime]::Now
        
            $myScriptList  = @()
            $shouldSkip = $ExecutionContext.SessionState.PSVariable.Get("SkipScriptFile").Value
            if ($shouldSkip) {
                return 
            }
            $scriptFiles = @(
                Get-ChildItem -Recurse -Path $env:GITHUB_WORKSPACE |
                    Where-Object Name -Match "\.$($ActionModuleName)\.ps1$"
                if ($ActionScript) {
                    if ($ActionScript -match '^\s{0,}/' -and $ActionScript -match '/\s{0,}$') {
                        $ActionScriptPattern = $ActionScript.Trim('/').Trim() -as [regex]
                        if ($ActionScriptPattern) {
                            $ActionScriptPattern = [regex]::new($ActionScript.Trim('/').Trim(), 'IgnoreCase,IgnorePatternWhitespace', [timespan]::FromSeconds(0.5))
                            Get-ChildItem -Recurse -Path $env:GITHUB_ACTION_PATH |
                                Where-Object { $_.Name -Match "\.$($ActionModuleName)\.ps1$" -and $_.FullName -match $ActionScriptPattern }
                        }
                    } else {
                        Get-ChildItem -Recurse -Path $env:GITHUB_ACTION_PATH |
                            Where-Object Name -Match "\.$($ActionModuleName)\.ps1$" |
                            Where-Object FullName -Like $ActionScript
                    }
                }
            ) | Select-Object -Unique
            $scriptFiles |
                ForEach-Object -Begin {
                    if ($env:GITHUB_STEP_SUMMARY) {
                        "## $ActionModuleName Scripts" |
                            Out-File -Append -FilePath $env:GITHUB_STEP_SUMMARY
                    } 
                } -Process {
                    $myScriptList += $_.FullName.Replace($env:GITHUB_WORKSPACE, '').TrimStart('/')
                    $myScriptCount++
                    $scriptFile = $_
                    if ($env:GITHUB_STEP_SUMMARY) {
                        "### $($scriptFile.Fullname -replace [Regex]::Escape($env:GITHUB_WORKSPACE))" |
                            Out-File -Append -FilePath $env:GITHUB_STEP_SUMMARY
                    }
                    $scriptCmd = $ExecutionContext.SessionState.InvokeCommand.GetCommand($scriptFile.FullName, 'ExternalScript')                
                    foreach ($requiredModule in $CommandInfo.ScriptBlock.Ast.ScriptRequirements.RequiredModules) {
                        if ($requiredModule.Name -and 
                            (-not $requiredModule.MaximumVersion) -and
                            (-not $requiredModule.RequiredVersion)
                        ) {
                            InstallActionModule $requiredModule.Name
                        }
                    }
                    $scriptFileOutputs = . $scriptCmd                
                    $scriptFileOutputs |
                        . ProcessOutput  | 
                        Out-Host
                }    
            
            $MyScriptFilesTook = [Datetime]::Now - $MyScriptFilesStart
            $SummaryOfMyScripts = "$myScriptCount $ActionModuleName scripts took $($MyScriptFilesTook.TotalSeconds) seconds" 
            $SummaryOfMyScripts | 
                Out-Host
            if ($env:GITHUB_STEP_SUMMARY) {
                $SummaryOfMyScripts | 
                    Out-File -Append -FilePath $env:GITHUB_STEP_SUMMARY
            }
            #region Custom    
            #endregion Custom
        }
        
        function OutError {
            $anyRuntimeExceptions = $false
            foreach ($err in $error) {        
                $errParts = @(
                    "::error "
                    @(
                        if ($err.InvocationInfo.ScriptName) {
                        "file=$($err.InvocationInfo.ScriptName)"
                    }
                    if ($err.InvocationInfo.ScriptLineNumber -ge 1) {
                        "line=$($err.InvocationInfo.ScriptLineNumber)"
                        if ($err.InvocationInfo.OffsetInLine -ge 1) {
                            "col=$($err.InvocationInfo.OffsetInLine)"
                        }
                    }
                    if ($err.CategoryInfo.Activity) {
                        "title=$($err.CategoryInfo.Activity)"
                    }
                    ) -join ','
                    "::"
                    $err.Exception.Message
                    if ($err.CategoryInfo.Category -eq 'OperationStopped' -and 
                        $err.CategoryInfo.Reason -eq 'RuntimeException') {
                        $anyRuntimeExceptions = $true
                    }
                ) -join ''
                $errParts | Out-Host
                if ($anyRuntimeExceptions) {
                    exit 1
                }
            }
        }
        
        function PushActionOutput {
            if ($anyFilesChanged) {
                "::notice::$($anyFilesChanged) Files Changed" | Out-Host        
            }
            if ($CommitMessage -or $anyFilesChanged) {
                if ($CommitMessage) {
                    Get-ChildItem $env:GITHUB_WORKSPACE -Recurse |
                        ForEach-Object {
                            $gitStatusOutput = git status $_.Fullname -s
                            if ($gitStatusOutput) {
                                git add $_.Fullname
                            }
                        }
            
                    git commit -m $ExecutionContext.SessionState.InvokeCommand.ExpandString($CommitMessage)
                }
            
                $checkDetached = git symbolic-ref -q HEAD
                if (-not $LASTEXITCODE -and -not $NoPush -and -not $noCommit) {            
                    if ($TargetBranch -and $anyFilesChanged) {
                        "::notice::Pushing Changes to $targetBranch" | Out-Host
                        git push --set-upstream origin $TargetBranch
                    } elseif ($anyFilesChanged) {
                        "::notice::Pushing Changes" | Out-Host
                        git push
                    }
                    "Git Push Output: $($gitPushed  | Out-String)"
                } else {
                    "::notice::Not pushing changes (on detached head)" | Out-Host
                    $LASTEXITCODE = 0
                    exit 0
                }
            }
        }
        
        filter ProcessOutput {
            $out = $_
            $outItem = Get-Item -Path $out -ErrorAction Ignore
            if (-not $outItem -and $out -is [string]) {
                $out | Out-Host
                if ($env:GITHUB_STEP_SUMMARY) {
                    "> $out" | Out-File -Append -FilePath $env:GITHUB_STEP_SUMMARY
                }
                return
            }
            $fullName, $shouldCommit = 
                if ($out -is [IO.FileInfo]) {
                    $out.FullName, (git status $out.Fullname -s)
                } elseif ($outItem) {
                    $outItem.FullName, (git status $outItem.Fullname -s)
                }
            if ($shouldCommit -and -not $NoCommit) {
                "$fullName has changed, and should be committed" | Out-Host
                git add $fullName
                if ($out.Message) {
                    git commit -m "$($out.Message)" | Out-Host
                } elseif ($out.CommitMessage) {
                    git commit -m "$($out.CommitMessage)" | Out-Host
                }  elseif ($gitHubEvent.head_commit.message) {
                    git commit -m "$($gitHubEvent.head_commit.message)" | Out-Host
                }
                $anyFilesChanged = $true
            }    
            $out
        }
        
        . ImportActionModule
        . InitializeAction
        . InvokeActionModule
        . PushActionOutput
        . OutError} @Parameters