. $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-PackageVersionsFromAlkamiProget {
    $samplePackageFileDirectory = "C:\test\test.txt"
    $samplePackageNames = "Alkami.Test.Microservice"

    Mock Get-Content -ModuleName $moduleForMock {
        return @()
    }

    Context "Parameter validation" {

        Mock Write-Warning -ModuleName $moduleForMock { }

        It "Throw when Both PackageNames Sources Passed" {
            { Get-PackageVersionsFromAlkamiProget -PackageNamesFile $samplePackageFileDirectory -PackageNames $samplePackageNames } | Should -Throw
        }

        It "Throw when PackageNames is provided but empty" {
            { Get-PackageVersionsFromAlkamiProget -PackageNames "" } | Should -Throw
        }

        It "Throw when the file from PackageNamesFile is empty" {
            Mock Test-IsCollectionNullOrEmpty -ModuleName $moduleForMock {
                return $true
            }
            Mock Write-Host -ModuleName $moduleForMock { }

            { Get-PackageVersionsFromAlkamiProget -PackageNamesFile $samplePackageFileDirectory } | Should -Throw
        }

        It "Throw when the file from PackageNamesFile doesn't exist" {
            { Get-PackageVersionsFromAlkamiProget -PackageNamesFile $samplePackageFileDirectory } | Should -Throw
        }

        It "Throw when the string for PackageNamesFile is empty" {
            { Get-PackageVersionsFromAlkamiProget -PackageNamesFile "" } | Should -Throw
        }

        It "Throw when neither PackageNames nor PackageNamesFile parameters are provided" {
            { Get-PackageVersionsFromAlkamiProget -SearchDevFeed } | Should -Throw
        }

        It "Correct amount of write-hosts called when PackageNames and all switch parameters are passed" {
            Mock Write-Host -ModuleName $moduleForMock { }

            Get-PackageVersionsFromAlkamiProget -PackageNames $samplePackageNames -ExactMatch -ShowPreVersions -SearchDevFeed -SearchQaFeed
            Assert-MockCalled -CommandName Write-Host -ModuleName $moduleForMock -Scope It -Exactly 12
        }

        It "Correct amount of write-hosts called when only PackageNamesFile parameter is passed" {
            Mock Get-Content -ModuleName $moduleForMock {
                return @()
            }
            Mock Test-IsCollectionNullOrEmpty -ModuleName $moduleForMock {
                return $false
            }
            Mock Test-Path -ModuleName $moduleForMock {
                return $true
            }

            Get-PackageVersionsFromAlkamiProget -packageNamesFile $samplePackageFileDirectory
            Assert-MockCalled -CommandName Write-Host -ModuleName $moduleForMock -Scope It -Exactly 3
        }

        It "Correct amount of write-hosts called when SearchQaFeed parameter is passed and SearchDevFeed is not" {
            Mock Write-Host -ModuleName $moduleForMock { }

            Get-PackageVersionsFromAlkamiProget -packageNames $samplePackageNames -SearchQaFeed
            Assert-MockCalled -CommandName Write-Host -ModuleName $moduleForMock -Scope It -Exactly 4
        }

        It "Correct amount of write-hosts called when neither SearchDevFeed nor SearchQaFeed is passed" {
            Mock Write-Host -ModuleName $moduleForMock { }

            Get-PackageVersionsFromAlkamiProget -packageNames $samplePackageNames
            Assert-MockCalled -CommandName Write-Host -ModuleName $moduleForMock -Scope It -Exactly 2
        }
    }

    Context "Output validation" {
        Mock Get-ChocoState -ModuleName $moduleForMock {
            $results = @(@{ Feed = $NULL; IsService = $NULL; Version = "1.0.1"; Tags = $NULL; Name = "Alkami.Test.Test1" },
                @{ Feed = $NULL; IsService = $NULL; Version = "1.1.0"; Tags = $NULL; Name = "Alkami.Test.Test2" },
                @{ Feed = $NULL; IsService = $NULL; Version = "1.2.0-pre099"; Tags = $NULL; Name = "Alkami.TestPre.Test" })
            return $results
        }

        Mock Write-Host -ModuleName $moduleForMock { }

        It "DevRelease versions of packages are displayed by default when no feed switches are provided" {
            $results = Get-PackageVersionsFromAlkamiProget -packageNames $samplePackageNames
            $results | Should -BeLike "*DevRelease*"
        }

        It "DevRelease versions of packages are displayed when SearchDevFeed is provided" {
            $results = Get-PackageVersionsFromAlkamiProget -packageNames $samplePackageNames -SearchDevFeed
            $results | Should -BeLike "*DevRelease*"
        }

        It "DevPre versions of packages are displayed when ShowPreVersions is provided" {
            $results = Get-PackageVersionsFromAlkamiProget -packageNames $samplePackageNames -ShowPreVersions
            $results | Should -BeLike "*DevPre*"
        }

        It "QaRelease versions of packages are displayed when SearchQaFeed is provided" {
            $results = Get-PackageVersionsFromAlkamiProget -packageNames $samplePackageNames -SearchQaFeed
            $results | Should -BeLike "*QaRelease*"
        }

        It "DevRelease, DevPre, and QaRelease versions are displayed when SearchDevFeed, ShowPreVersions, and SearchQaFeed are provided" {
            $results = Get-PackageVersionsFromAlkamiProget -packageNames $samplePackageNames -SearchQaFeed -ShowPreVersions -SearchDevFeed
            $results | Should -BeLike "*QaRelease*"
            $results | Should -BeLike "*DevPre*"
            $results | Should -BeLike "*DevRelease*"
        }

        It "DevRelease versions are not displayed when SearchDevFeed is not passed, and SearchQaFeed or ShowPreVersions is passed" {
            $results = Get-PackageVersionsFromAlkamiProget -packageNames $samplePackageNames -SearchQaFeed -ShowPreVersions
            $results | Should -Not -BeLike "*DevRelease*"
        }

        It "QaRelease versions are not displayed when the SearchQaFeed parameter is not provided" {
            $results = Get-PackageVersionsFromAlkamiProget -packageNames $samplePackageNames -SearchDevFeed -ShowPreVersions
            $results | Should -Not -BeLike "*QaRelease*"
        }

        It "DevPre versions are not displayed when the SearchDevFeed parameter is not provided" {
            $results = Get-PackageVersionsFromAlkamiProget -packageNames $samplePackageNames -SearchDevFeed -SearchQaFeed
            $results | Should -Not -BeLike "*DevPre*"
        }

        It "Returns an empty JSON string and warns the user if no results are found" {
            Mock Get-ChocoState -ModuleName $moduleForMock {
                $results = $NULL
                return $results
            }
            Mock Write-Warning -ModuleName $moduleForMock { }

            $results = Get-PackageVersionsFromAlkamiProget -packageNames "doesntexist"
            $emptyHashToJson = @{} | ConvertTo-Json
            $results | Should -BeExactly $emptyHashToJson

            Assert-MockCalled -CommandName Write-Warning -ModuleName $moduleForMock -Scope It -Exactly 1
        }

        It "Hash duplicate checks make function return only one instance of a package when the package is found by get-chocostate multiple times" {
            Mock Get-ChocoState -ModuleName $moduleForMock {
                $results = @(@{ Feed = $NULL; IsService = $NULL; Version = "1.0.1-pre000"; Tags = $NULL; Name = "Alkami.Test" })
                return $results
            }
            Mock Write-Verbose -ModuleName $moduleForMock { }

            $results = Get-PackageVersionsFromAlkamiProget -packageNames "testIterationOne,testIterationTwo" -SearchDevFeed -SearchQaFeed -ShowPreVersions -Verbose

            Assert-MockCalled -CommandName Write-Verbose -ModuleName $moduleForMock -Scope It -ParameterFilter {$Message -like "*Results already contain a DevRelease entry*"}
            Assert-MockCalled -CommandName Write-Verbose -ModuleName $moduleForMock -Scope It -ParameterFilter {$Message -like "*Results already contain a DevPre entry*"}
            Assert-MockCalled -CommandName Write-Verbose -ModuleName $moduleForMock -Scope It -ParameterFilter {$Message -like "*Results already contain a QaRelease entry*"}

            $convertedResults = $results | ConvertFrom-Json
            $convertedResults.'Alkami.Test'.DevRelease | Should -Be "1.0.1-pre000"
            $convertedResultsCount = ($convertedResults | Get-Member -Type NoteProperty).count
            $convertedResultsCount | Should -Be 1
        }
    }
}