param(
    [string]$targetFramework,
    [string]$is32Bit = "False"
)

if (!$targetFramework){
    Write-Host "run-tests.ps1 ERROR: targetFramework is undefined!"
    exit 1
}

function VerifyPath($path, $errorMessage) {
    if (!(Test-Path -Path $path)) {
        Write-Host "run-tests.ps1 $errorMessage `n $xunitRunnerPath"
        exit 1
    }
}

function CheckSubmoduleStatus() {
    $submoduleStatus = (git submodule status) | Out-String
    # if the result string is empty, the command failed to run (we didn't capture the error stream)
    if ($submoduleStatus) {
        # git has been called successfully, what about the status?
        if (($submoduleStatus -match "\-") -or ($submoduleStatus -match "\(\(null\)\)"))
        {
            # submodule has not been initialized!
            return 2;
        } 
        elseif ($submoduleStatus -match "\+")
        {
            # submodule is not synced:
            return 1;
        }
        else {
            # everything fine:
            return 0;
        }
    } else {
          # git call failed, so we should warn
          return 3;
    }
}


if ( ($targetFramework -eq "netcoreapp2.1") -and ($env:CI -eq "True") -and ($is32Bit -ne "True")) {
    # We execute CodeCoverage.cmd only for one specific job on CI (netcoreapp2.1 + 64bit )
    $testRunnerCmd = ".\tests\CodeCoverage\CodeCoverage.cmd"
}
elseif ($targetFramework -eq "mono") {
    $testDllPath = "$PSScriptRoot\tests\ImageSharp.Tests\bin\Release\net462\SixLabors.ImageSharp.Tests.dll"
    VerifyPath($testDllPath, "test dll missing:")

    $xunitRunnerPath = "${env:HOMEPATH}\.nuget\packages\xunit.runner.console\2.3.1\tools\net452\"
    
    VerifyPath($xunitRunnerPath, "xunit console runner is missing on path:")
    
    cd "$xunitRunnerPath"

    if ($is32Bit -ne "True") {
        $monoPath = "${env:PROGRAMFILES}\Mono\bin\mono.exe"
    }
    else {
        $monoPath = "${env:ProgramFiles(x86)}\Mono\bin\mono.exe"
    }

    VerifyPath($monoPath, "mono runtime missing:")
    
    $testRunnerCmd = "& `"${monoPath}`" .\xunit.console.exe `"${testDllPath}`""
}
else {
    cd .\tests\ImageSharp.Tests
    $xunitArgs = "-nobuild -c Release -framework $targetFramework"

    if ($targetFramework -eq "netcoreapp2.1") {
        # There were issues matching the correct installed runtime if we do not specify it explicitly:
        $xunitArgs += " --fx-version 2.1.0"
    }

    if ($is32Bit -eq "True") {
        $xunitArgs += " -x86"
    }

    $testRunnerCmd = "dotnet xunit $xunitArgs"
}

Write-Host "running:"
Write-Host $testRunnerCmd
Write-Host "..."

Invoke-Expression $testRunnerCmd

cd $PSScriptRoot

$exitCodeOfTests = $LASTEXITCODE;

if (0 -ne ([int]$exitCodeOfTests)) {
    # check submodule status
    $submoduleStatus = CheckSubmoduleStatus
    if ([int]$submoduleStatus -eq 1) {
        # not synced
        Write-Host -ForegroundColor Yellow "Check if submodules are up to date. You can use 'git submodule update' to fix this";
    } elseif ($submoduleStatus -eq 2) {
        # not initialized
        Write-Host -ForegroundColor Yellow "Check if submodules are initialized. You can run 'git submodule init' to initialize them."
    } elseif ($submoduleStatus -eq 3) {
        # git not found, maybe submodules not synced?
        Write-Host -ForegroundColor Yellow "Could not check if submodules are initialized correctly. Maybe git is not installed?"
    } else {
        #Write-Host "Submodules are up to date";
    }
}

exit $exitCodeOfTests