guided-setup

1.3.0

demo/core/steps/context.ps1

class ChooseContext : Step {

    static [string] hidden $description = @'
Specify the kubectl context where this install will take place so that the
setup script can fetch configuration data.
'@

    static [string] hidden $noContext = 'I do not have a cluster'

    ChooseContext([ConfigInput] $config) : base(
        [ChooseContext].Name, 
        $config,
        'Kubectl Context',
        [ChooseContext]::description,
        'What''s the kubectl context for this deployment?') {}

    [IQuestion]MakeQuestion([string] $prompt) {

        $contexts = Get-KubectlContexts
        $contexts | ForEach-Object {
            Write-Host $_
        }
        Write-Host
        
        $contextNames = Get-KubectlContexts -nameOnly
        $contextTuples = @()
        $contextTuples += $contextNames | ForEach-Object {
            [tuple]::create($_, "Use the kubectl context named $_ for your deployment")
        }
        $contextTuples += [tuple]::create([ChooseContext]::noContext, "You do not have a cluster and need to create one first")

        return new-object MultipleChoiceQuestion($prompt, $contextTuples, -1)
    }

    [bool]HandleResponse([IQuestion] $question) {

        $mcQuestion = [MultipleChoiceQuestion]$question
        $contextName = $mcQuestion.options[$mcQuestion.choice].item1.replace('&','')
        
        $this.config.kubeContextName = $contextName -eq [ChooseContext]::noContext ? '' : $contextName
        return $true
    }

    [void]Reset(){
        $this.config.kubeContextName = ''
    }
}

class HandleNoContext : Step {

    HandleNoContext([ConfigInput] $config) : base(
        [HandleNoContext].Name, 
        $config,
        '',
        '',
        '') {}

    [bool]Run() {
        Read-Host "Unable to continue because a Kuberenetes cluster is unavailable.`n`nPress Enter to continue"
        return $true
    }

    [bool]CanRun() {
        return -not $this.config.HasContext()
    }
}

class SelectContext: Step {

    SelectContext([ConfigInput] $config) : base(
        [SelectContext].Name, 
        $config,
        '',
        '',
        '') {}

    [bool]Run() {
        Write-HostSection 'Select Kubectl Context' 'Selecting kubectl context...'
        Set-KubectlContext $this.config.kubeContextName

        # retest k8s version prereqs using selected context
        $messages = @()
        $this.config.prereqsSatisified = Test-RequiredKubernetesVersion ([ref]$messages)
        if (-not $this.config.prereqsSatisified) {
            $this.config.missingPrereqs = $messages
            return $true
        }
        
        $question = new-object YesNoQuestion("Continue with selected '$($this.config.kubeContextName)' context?",
            "Yes, continue with this context.",
            "No, select another context.", 0)

        $question.Prompt()
        if (-not $question.hasResponse) {
            return $false
        }
        return $question.choice -eq 0
    }

    [bool]CanRun() {
        return $this.config.HasContext()
    }
}