psake.ps1

# PSake makes variables declared here available in other scriptblocks
# Init some things
Properties {
    # Find the build folder based on build system
    $ProjectRoot = $ENV:BHProjectPath
    if (-not $ProjectRoot) {
        $ProjectRoot = $PSScriptRoot
    }
    $ModuleFolder = Split-Path -Path $ENV:BHPSModuleManifest -Parent
    $PSVersion = $PSVersionTable.PSVersion.Major
    $TestFile = "TestResults_PS$PSVersion`_$TimeStamp.xml"
    $lines = '----------------------------------------------------------------------'
    $Verbose = @{ }
    if ($ENV:BHCommitMessage -match "!verbose") {
        $Verbose = @{ Verbose = $True }
    }
    $CurrentVersion = [version](Get-Metadata -Path $env:BHPSModuleManifest)
    $StepVersion = [version] (Step-Version $CurrentVersion)
    $GalleryVersion = Get-NextPSGalleryVersion -Name $env:BHProjectName
    $BuildVersion = $StepVersion
    If ($GalleryVersion -gt $StepVersion) {
        $BuildVersion = $GalleryVersion
    }
    $BuildVersion = [version]::New($BuildVersion.Major, $BuildVersion.Minor, $BuildVersion.Build, $env:BHBuildNumber)
    $BuildDate = Get-Date -uFormat '%Y-%m-%d'
    $ReleaseNotes = "$ProjectRoot\RELEASE.md"
    $ChangeLog = "$ProjectRoot\docs\ChangeLog.md"
}

Task Default -Depends PostDeploy

Task Init {
    $lines
    Set-Location $ProjectRoot
    "Build System Details:"
    Get-Item ENV:BH* | Format-List
    "`n"
    "Current Version: $CurrentVersion`n"
    "Build Version: $BuildVersion`n"    
}

Task UnitTests -Depends Init {
    $lines
    "Running Pre-build unit tests`n"
    $Timestamp = Get-date -uformat "%Y%m%d-%H%M%S"
    $TestFile = "TestResults_PS$PSVersion`_$TimeStamp.xml"
    $Parameters = @{
        Script = "$ProjectRoot\Tests"
        PassThru = $true
        Tag = 'Unit'
        OutputFormat = 'NUnitXml'
        OutputFile = "$ProjectRoot\$TestFile"
    }
    $TestResults =Invoke-Pester @Parameters
    if ($TestResults.FailedCount -gt 0) {
        Write-Error "Failed '$($TestResults.FailedCount)' tests, build failed"
    }
    "`n"
    If ($ENV:BHBuildSystem -eq 'AppVeyor') {
        "Uploading $ProjectRoot\$TestFile to AppVeyor"
        "JobID: $env:APPVEYOR_JOB_ID"
        (New-Object 'System.Net.WebClient').UploadFile("https://ci.appveyor.com/api/testresults/nunit/$($env:APPVEYOR_JOB_ID)", (Resolve-Path "$ProjectRoot\$TestFile"))
    }
    Remove-Item "$ProjectRoot\$TestFile" -Force -ErrorAction SilentlyContinue
}

Task Build -Depends UnitTests {
    $lines
    
    "Populating AliasesToExport and FunctionsToExport"
    # Load the module, read the exported functions and aliases, update the psd1
    $FunctionFiles = Get-ChildItem "$ModuleFolder\Public\*.ps1" |
        Where-Object{ $_.name -notmatch 'Tests' }
    $ExportFunctions = @()
    $ExportAliases = @()
    foreach ($FunctionFile in $FunctionFiles) {
        $AST = [System.Management.Automation.Language.Parser]::ParseFile($FunctionFile.FullName, [ref]$null, [ref]$null)        
        $Functions = $AST.FindAll({
                $args[0] -is [System.Management.Automation.Language.FunctionDefinitionAst]
            }, $true)
        if ($Functions.Name) {
            $ExportFunctions += $Functions.Name
        }
        $Aliases = $AST.FindAll({
                $args[0] -is [System.Management.Automation.Language.AttributeAst] -and
                $args[0].parent -is [System.Management.Automation.Language.ParamBlockAst] -and
                $args[0].TypeName.FullName -eq 'alias'
            }, $true)
        if ($Aliases.PositionalArguments.value) {
            $ExportAliases += $Aliases.PositionalArguments.value
        }        
    }
    Set-ModuleFunctions -Name $env:BHPSModuleManifest -FunctionsToExport $ExportFunctions
    Update-Metadata -Path $env:BHPSModuleManifest -PropertyName AliasesToExport -Value $ExportAliases
    
    "Populating NestedModules"
    # Scan the Public and Private folders and add all Files to NestedModules
    # I prefer to populate this instead of dot sourcing from the .psm1
    $Parameters = @{
        Path = @(
            "$ModuleFolder\Public\*.ps1"
            "$ModuleFolder\Private\*.ps1"
        )
        ErrorAction = 'SilentlyContinue'
    }
    $ExportModules = Get-ChildItem @Parameters |
        Where-Object { $_.Name -notmatch '\.tests{0,1}\.ps1' } |
        ForEach-Object { $_.fullname.replace("$ModuleFolder\", "") }
    Update-Metadata -Path $env:BHPSModuleManifest -PropertyName NestedModules -Value $ExportModules
    
    # Bump the module version
    Update-Metadata -Path $env:BHPSModuleManifest -PropertyName ModuleVersion -Value $BuildVersion
    
    # Update release notes with Version info and set the PSD1 release notes
    $parameters = @{
        Path = $ReleaseNotes
        ErrorAction = 'SilentlyContinue'
    }
    $ReleaseText = (Get-Content @parameters | Where-Object {$_ -notmatch '^# Version '}) -join "`r`n"
    if (-not $ReleaseText) {
        "Skipping realse notes`n"
        "Consider adding a RELEASE.md to your project.`n"
        return
    }
    $Header = "# Version {0} ({1})`r`n" -f $BuildVersion, $BuildDate
    $ReleaseText = $Header + $ReleaseText
    $ReleaseText | Set-Content $ReleaseNotes
    Update-Metadata -Path $env:BHPSModuleManifest -PropertyName ReleaseNotes -Value $ReleaseText
    
    # Update the ChangeLog with the current release notes
    $releaseparameters = @{
        Path = $ReleaseNotes
        ErrorAction = 'SilentlyContinue'
    }
    $changeparameters = @{
        Path = $ChangeLog
        ErrorAction = 'SilentlyContinue'
    }
    (Get-Content @releaseparameters),"`r`n`r`n", (Get-Content @changeparameters) | Set-Content $ChangeLog
}

Task Test -Depends Build  {
    $lines
    "`n`tSTATUS: Testing with PowerShell $PSVersion"
    
    # Gather test results. Store them in a variable and file
    $Timestamp = Get-date -uformat "%Y%m%d-%H%M%S"
    $TestFile = "TestResults_PS$PSVersion`_$TimeStamp.xml"
    $parameters = @{
        Script = "$ProjectRoot\Tests"
        PassThru = $true
        OutputFormat = 'NUnitXml'
        OutputFile = "$ProjectRoot\$TestFile"
    }    
    $TestResults = Invoke-Pester @parameters 
    
    # In Appveyor?  Upload our tests! #Abstract this into a function?
    If ($ENV:BHBuildSystem -eq 'AppVeyor') {
        "Uploading $ProjectRoot\$TestFile to AppVeyor"
        "JobID: $env:APPVEYOR_JOB_ID"
        (New-Object 'System.Net.WebClient').UploadFile("https://ci.appveyor.com/api/testresults/nunit/$($env:APPVEYOR_JOB_ID)", (Resolve-Path "$ProjectRoot\$TestFile"))
    }
    
    Remove-Item "$ProjectRoot\$TestFile" -Force -ErrorAction SilentlyContinue
    
    # Failed tests?
    # Need to tell psake or it will proceed to the deployment. Danger!
    if ($TestResults.FailedCount -gt 0) {
        Write-Error "Failed '$($TestResults.FailedCount)' tests, build failed"
    }
    "`n"
}

Task BuildDocs -depends Test {
    $lines
    
    "Loading Module from $ENV:BHPSModuleManifest"
    Remove-Module $ENV:BHProjectName -Force -ea SilentlyContinue
    # platyPS + AppVeyor requires the module to be loaded in Global scope
    Import-Module $ENV:BHPSModuleManifest -force -Global
    
    #Build YAMLText starting with the header
    $YMLtext = (Get-Content "$ProjectRoot\header-mkdocs.yml") -join "`n"
    $YMLtext = "$YMLtext`n"
    $parameters = @{
        Path = $ReleaseNotes
        ErrorAction = 'SilentlyContinue'
    }
    $ReleaseText = (Get-Content @parameters) -join "`n"
    if ($ReleaseText) {
        $ReleaseText | Set-Content "$ProjectRoot\docs\RELEASE.md"
        $YMLText = "$YMLtext  - Realse Notes: RELEASE.md`n"
    }
    if ((Test-Path -Path $ChangeLog)) {
        $YMLText = "$YMLtext  - Change Log: ChangeLog.md`n"
    }
    $YMLText = "$YMLtext  - Functions:`n"
    # Drain the swamp
    $parameters = @{
        Recurse = $true
        Force = $true
        Path = "$ProjectRoot\docs\functions"
        ErrorAction = 'SilentlyContinue'
    }
    $null = Remove-Item @parameters
    $Params = @{
        Path = "$ProjectRoot\docs\functions"
        type = 'directory'
        ErrorAction = 'SilentlyContinue'
    }
    $null = New-Item @Params
    $Params = @{
        Module = $ENV:BHProjectName
        Force = $true
        OutputFolder = "$ProjectRoot\docs\functions"
        NoMetadata = $true
    }
    New-MarkdownHelp @Params | foreach-object {
        $Function = $_.Name -replace '\.md', ''
        $Part = "    - {0}: functions/{1}" -f $Function, $_.Name
        $YMLText = "{0}{1}`n" -f $YMLText, $Part
        $Part
    }
    $YMLtext | Set-Content -Path "$ProjectRoot\mkdocs.yml"
}

Task Deploy -Depends BuildDocs {
    $lines
    
    # Gate deployment
    if (
        $ENV:BHBuildSystem -ne 'Unknown' -and
        $ENV:BHBranchName -eq "master" -and
        $ENV:BHCommitMessage -match '!deploy'
    ) {
        $Params = @{
            Path = $ProjectRoot
            Force = $true
        }
        
        Invoke-PSDeploy @Verbose @Params
    }
    else {
        "Skipping deployment: To deploy, ensure that...`n" +
        "`t* You are in a known build system (Current: $ENV:BHBuildSystem)`n" +
        "`t* You are committing to the master branch (Current: $ENV:BHBranchName) `n" +
        "`t* Your commit message includes !deploy (Current: $ENV:BHCommitMessage)"
    }
}

Task PostDeploy -depends Deploy {
    $lines
    if ($ENV:APPVEYOR_REPO_PROVIDER -notlike 'github') {
        "Repo provider '$ENV:APPVEYOR_REPO_PROVIDER'. Skipping PostDeploy"
        return
    }
    If ($ENV:BHBuildSystem -eq 'AppVeyor') {
        "git config --global credential.helper store"
        cmd /c "git config --global credential.helper store 2>&1"
        
        Add-Content "$env:USERPROFILE\.git-credentials" "https://$($env:access_token):x-oauth-basic@github.com`n"
        
        "git config --global user.email"
        cmd /c "git config --global user.email ""$($ENV:BHProjectName)-$($ENV:BHBranchName)-$($ENV:BHBuildSystem)@markekraus.com"" 2>&1"
        
        "git config --global user.name"
        cmd /c "git config --global user.name ""AppVeyor"" 2>&1"
        
        "git config --global core.autocrlf true"
        cmd /c "git config --global core.autocrlf true 2>&1"
    }
    
    "git checkout $ENV:BHBranchName"
    cmd /c "git checkout $ENV:BHBranchName 2>&1"
    
    "git add -A"
    cmd /c "git add -A 2>&1"
    
    "git commit -m"
    cmd /c "git commit -m ""AppVeyor post-build commit[ci skip]"" 2>&1"
    
    "git status"
    cmd /c "git status 2>&1"
    
    "git push origin $ENV:BHBranchName"
    cmd /c "git push origin $ENV:BHBranchName 2>&1"
    # if this is a !deploy on master, create GitHub release
    if (
        $ENV:BHBuildSystem -ne 'Unknown' -and
        $ENV:BHBranchName -eq "master" -and
        $ENV:BHCommitMessage -match '!deploy'
    ) {
        "Publishing Release 'v$BuildVersion' to Github"
        $parameters = @{
            Path = $ReleaseNotes
            ErrorAction = 'SilentlyContinue'
        }
        $ReleaseText = (Get-Content @parameters) -join "`r`n"
        if (-not $ReleaseText) {
            $ReleaseText = "Release version $BuildVersion ($BuildDate)"
        }
        $Body = @{
            "tag_name" = "v$BuildVersion"
            "target_commitish"= "master"
            "name" = "v$BuildVersion"
            "body"= $ReleaseText
            "draft" = $false
            "prerelease"= $false
        } | ConvertTo-Json
        $releaseParams = @{
            Uri = "https://api.github.com/repos/{0}/releases" -f $ENV:APPVEYOR_REPO_NAME
            Method = 'POST'
            Headers = @{
                Authorization = 'Basic ' + [Convert]::ToBase64String(
                    [Text.Encoding]::ASCII.GetBytes($env:access_token + ":x-oauth-basic"));
            }
            ContentType = 'application/json'
            Body = $Body
        }
        $Response = Invoke-RestMethod @releaseParams
        $Response | Format-List *
    }
}