. $PSScriptRoot\..\..\Load-PesterModules.ps1
$here = Split-Path -Parent $MyInvocation.MyCommand.Path
$sut = (Split-Path -Leaf $MyInvocation.MyCommand.Path) -replace '\.tests\.', '.'
$functionPath = Join-Path -Path $here -ChildPath $sut
Write-Host "Overriding SUT: $functionPath"
Import-Module $functionPath -Force

$moduleForMock = ""

Describe "Get-HelmDeploymentMetadata" {

        # Mock Helm Yaml values file with some globals and three services defined.
        $global:testHelmValuesFileContent = @'
# Globals
global:
    someBoolean: true

# Config Map
configMap:
    environmentType: Development

alk-svc-rpc-iaccountservicecontract-v2:
    serviceName: "alk-svc-rpc-iaccountservicecontract-v2"
    image: alkami.microservices.iaccountservicecontract.netcore
    tag: 1.0.0

alk-svc-rpc-isettingsservicecontract-v4:
    serviceName: "alk-svc-rpc-isettingsservicecontract-v4"
    image: alkami.microservices.isettingsservicecontract.netcore
    tag: 2.0.0

alk-svc-rpc-itransactionservicecontract-v1:
    serviceName: "alk-svc-rpc-isettingsservicecontract-v1"
    image: alkami.microservices.itransactionservicecontract.netcore
    tag: 3.0.0
    firstVariable:
        secondVariable: testValue
'@

    Context "Get-HelmDeploymentMetadata Contains Expected Data" {

        Mock -ModuleName $moduleForMock -CommandName Test-Path -MockWith { return $true }
        Mock -ModuleName $moduleForMock -CommandName Get-Content -MockWith { return $testHelmValuesFileContent }
        Mock -ModuleName $moduleForMock -CommandName Write-Error -MockWith {}

        $result = Get-HelmDeploymentMetadata -RepoPath "C:/does/not/matter/its/mocked"

        It "should contain all expected services" {
            $result.count | Should -Be 3
            $result | Where-Object { $_.serviceName -eq "alk-svc-rpc-iaccountservicecontract-v2" } | Should -Not -BeNullOrEmpty
            $result | Where-Object { $_.serviceName -eq "alk-svc-rpc-isettingsservicecontract-v4" } | Should -Not -BeNullOrEmpty
            $result | Where-Object { $_.serviceName -eq "alk-svc-rpc-isettingsservicecontract-v1" } | Should -Not -BeNullOrEmpty
        }

        It "should not contain globals or configmaps" {
            $result | Where-Object { $_.someBoolean -eq $true } | Should -BeNull
            $result | Where-Object { $_.environmentType -eq "Development" } | Should -BeNull
        }

        It "contains arbitrary multi-level data" {
            $settingsService = $result | Where-Object { $_.serviceName -eq "alk-svc-rpc-isettingsservicecontract-v1" }
            $settingsService | Should -Not -BeNullOrEmpty
            $settingsService.firstVariable.secondVariable | Should -Be "testValue"
        }

        It "did not write an error" {
            Assert-MockCalled -ModuleName $moduleForMock -CommandName Write-Error -Times 0 -Scope Context
        }
    }

    Context "Get-HelmDeploymentMetadata Expected Failures" {
        Mock -ModuleName $moduleForMock -CommandName Write-Error -MockWith {}

        It "should fail if the repository path is bad" {
            Mock -ModuleName $moduleForMock -CommandName Test-Path -ParameterFilter { $Path -eq "./BadRepoPath" } -MockWith { return $false }

            $result = Get-HelmDeploymentMetadata -RepoPath "./BadRepoPath"
            $result | Should -BeNullOrEmpty
            Assert-MockCalled -ModuleName $moduleForMock -CommandName Write-Error -Times 1 -Scope Context
        }

        It "should fail if the values file is missing" {
            Mock -ModuleName $moduleForMock -CommandName Test-Path -ParameterFilter { $Path -eq "./GoodRepositoryPath" } -MockWith { return $true }
            Mock -ModuleName $moduleForMock -CommandName Test-Path -ParameterFilter { $Path -eq "./GoodRepositoryPath/alkami-services/values.yaml" } -MockWith { return $false }

            $result = Get-HelmDeploymentMetadata -RepoPath "./GoodRepositoryPath"
            $result | Should -BeNullOrEmpty
            Assert-MockCalled -ModuleName $moduleForMock -CommandName Write-Error -Times 1 -Scope Context
        }
    }
}