Powershell Code Metrics

param($path, $env)

#note: the metrics.exe is managed in the nuget package file for this project
#note: create and use a separate .sln file with only the projects that need scanning. Exclude test projects etc.

# run local command:  .\"Deployment Scripts\generate_code_metrics.ps1" "E:\code\ESSO"

$metrics_exe = "$path\packages\Microsoft.CodeAnalysis.Metrics.3.3.0\Metrics\Metrics.exe"
$sln_file = "$path\CodeMetrics.sln"
$metricsHtmlFile = "$path\codeMetrics.html"
$metricsXmlFile = "$path\codeMetrics.xml"
$deploy = "$path\deploy"
$codeMetricsZip = "$deploy\codeMetrics.zip"


#remove old files
Remove-Item $metricsXmlFile  -Force  -ErrorAction 'SilentlyContinue'
Remove-Item $metricsHtmlFile -Force  -ErrorAction 'SilentlyContinue'
Remove-Item $codeMetricsZip  -Force  -ErrorAction 'SilentlyContinue'

# run the code metrics nuget tool
$cmd = "$metrics_exe  /s:$sln_file /o:$metricsXmlFile"
Invoke-Expression $cmd

#extract data from the code metrics output tool
$xml = [xml](Get-Content $metricsXmlFile)
$properties = "MaintainabilityIndex", "CyclomaticComplexity", "ClassCoupling","DepthOfInheritance","SourceLines", "ExecutableLines"
$metricsList = @()
foreach($assembly in $xml.SelectNodes("//Assembly")){
    [hashtable]$info = @{Name = $assembly.Name.Split(',')[0]}
    foreach($property in $properties){
        $info.add($property, $assembly.SelectSingleNode("./Metrics/Metric[@Name='$property']").Value)
    }
    $metricsList += New-Object PSObject -Property $info
}
$columnNames = ,"Name" + $properties

#make the html table
$tableStr = $metricsList | ConvertTo-Html -Property $columnNames -Fragment #| Out-File -FilePath $metricsHtmlFile

#useful for debugging, the fragment returns different html
function WriteXmlToScreen ([xml]$xml)
{
    $StringWriter = New-Object System.IO.StringWriter;
    $XmlWriter = New-Object System.Xml.XmlTextWriter $StringWriter;
    $XmlWriter.Formatting = "indented";
    $xml.WriteTo($XmlWriter);
    $XmlWriter.Flush();
    $StringWriter.Flush();
    Write-Output $StringWriter.ToString();
}

$table = [xml]$tableStr
#WriteXmlToScreen($table)

# for the table headers convert CapWords to ProperCase
foreach($th in $table.SelectNodes("//th")){
    $th.InnerText = $th.InnerText -creplace '([A-Z])', ' $1'
}

$table.Save($metricsHtmlFile)

$compress = @{
    DestinationPath = $codeMetricsZip
    Path = $metricsXmlFile, $metricsHtmlFile
    CompressionLevel = "Optimal"
}

New-Item -ItemType directory -Path "$path\deploy" -ErrorAction 'SilentlyContinue'
Compress-Archive  @compress