SwissKnife

1.0.0-preview6

functions/module/Install-ModuleIfNotExist.ps1

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 function Install-ModuleIfNotExist {
    param(
        [Parameter(Mandatory = $true, ParameterSetName = 'Default')]
        [Parameter(Mandatory = $true, ParameterSetName = 'CustomRepo')]
        [string]$Name,
        [Parameter(Mandatory = $false, ParameterSetName = 'Default')]
        [Parameter(Mandatory = $false, ParameterSetName = 'CustomRepo')]
        [string]$InstallDirectory = $null,
        [Parameter(Mandatory = $false, ParameterSetName = 'Default')]
        [Parameter(Mandatory = $false, ParameterSetName = 'CustomRepo')]
        [string]$InstallScope = 'CurrentUser',
        [Parameter(Mandatory = $true, ParameterSetName = 'CustomRepo')]
        [string]$RepositoryName,
        [Parameter(Mandatory = $true, ParameterSetName = 'CustomRepo')]
        [string]$RepositoryUrl,
        [Parameter(Mandatory = $true, ParameterSetName = 'CustomRepo')]
        [string]$UserName,
        [Parameter(Mandatory = $true, ParameterSetName = 'CustomRepo')]
        [SecureString]$Password,
        [Parameter(Mandatory = $false, ParameterSetName = 'Default')]
        [Parameter(Mandatory = $false, ParameterSetName = 'CustomRepo')]
        [switch]$AllowPrerelease,
        [Parameter(Mandatory = $false, ParameterSetName = 'Default')]
        [Parameter(Mandatory = $false, ParameterSetName = 'CustomRepo')]
        [switch]$Force
    )

    $installInDirectory = $null -ne $InstallDirectory -and $InstallDirectory -ne ""
    if ($installInDirectory) {
        $isInstalled =    $null -ne (Get-Module -ListAvailable -FullyQualifiedName "$InstallDirectory\$Name" -ErrorAction SilentlyContinue)
    }
    else {
        $isInstalled = $null -ne (Get-Module -ListAvailable -Name $Name)
    }
    
    if (-not $isInstalled) {
        switch ($PsCmdlet.ParameterSetName) {
            'Default' {
                if ($null -ne $InstallDirectory -and $InstallDirectory -ne "") {
                    Write-Host "Installing module $Name into $InstallDirectory"
                    Install-ModuleInDirectory -Name $Name -InstallDirectory $InstallDirectory -AllowPrerelease:$AllowPrerelease -Force:$Force
                }
                else {
                    Write-Host "Installing module $Name"
                    Install-Module -Name $Name -Repository 'PSGallery' -Scope $InstallScope -AllowPrerelease:$AllowPrerelease -Force:$Force
                }
            }
            'CustomRepo' {
                if ($null -eq (Get-PSRepository -Name $RepositoryName)) {
                    Register-PSRepository -Name $RepositoryName -SourceLocation $RepositoryUrl -PublishLocation $RepositoryUrl -InstallationPolicy Trusted
                }
                $credsAzureDevopsServices = New-Object System.Management.Automation.PSCredential $UserName, $Password

                if ($null -ne $InstallDirectory -and $InstallDirectory -ne "") {
                    Write-Host "Installing module $Name from $RepositoryName into $InstallDirectory"
                    Install-ModuleInDirectory -Name $Name -InstallDirectory $InstallDirectory -Credential $credsAzureDevopsServices -AllowPrerelease:$AllowPrerelease -Force:$Force    
                }
                else {
                    Write-Host "Installing module $Name from $RepositoryName"
                    Install-Module -Name $Name -Repository $RepositoryName -Credential $credsAzureDevopsServices -Scope $InstallScope -AllowPrerelease:$AllowPrerelease -Force:$Force
                }
            }
        }
    }

    if ($installInDirectory) {
        $modulePath = (Get-Module -ListAvailable -FullyQualifiedName "$InstallDirectory\$Name").Path
    }
    else {
        $modulePath = (Get-Module -ListAvailable -Name $Name).Path
    }

    # Test moulde path
    if ($null -eq $modulePath -or -not (Test-Path $modulePath)) {
        Write-Error "Module $Name was not isntalled! Path:$modulePath is invalid!"
    }
    elseif (-not $isInstalled) {
        Write-Host "Module $Name is installed in $modulePath"
    }
}