SmileBASIC Source Log Graphing (files will be released slowly)

AnalyzeLogs.ps1

[Uri]$Domain = "http://scratch.smilebasicsource.com/chatlogs"
[Microsoft.PowerShell.Commands.HtmlWebResponseObject]$LogListDocument = Invoke-WebRequest $Domain

[Int32]$CurrentFileNum = 0
[Int32]$TotalFiles = $LogListDocument.Links.Count
[Regex]$DateRegexp = [Regex]'(\d\d-\d\d-\d\d)'
[Regex]$UserRegexp = [Regex]'\n *([a-zA-Z0-9_]+)\['
[String]$TAB = "`t"

[String]$UserData = ""     # only users logged for each day
[String]$NumberedData = "" # includes message counts per user per day

$LogListDocument.Links | Where { $_.href -match "\.txt" } | ForEach-Object {
    $CurrentFileNum += 1
    [String]$WorkingData = ""
    [Hashtable]$Users = [Hashtable]::new()

    [HtmlWebResponseObject]$Log = Invoke-WebRequest ($Domain + $_.href)
    [String]$date = $DateRegexp.Match($_.href).Value

    $WorkingData += "$date;"
    $NumberedData += "${date}:" + [Environment]::NewLine
    Write-Output $date + " ($CurrentFileNum of $TotalFiles)"

    [System.Text.RegularExpressions.MatchCollection]$UserMatches = $UserRegexp.Matches($Log.Content)
    $UserMatches.Groups | where { $_.Name -eq 1 } | ForEach {
        if ($Users.ContainsKey($_.Value) -eq $False) {
            $Users.Add($_.Value, 1)
        } else {
            $Users.Item($_.Value) += 1
        }
    }

    $UserMatches.GetEnumerator() | Sort-Object -property Value -Descending | ForEach-Object {
        $WorkingData += $_.Name + ","
        $NumberedData += $TAB + $_.Name + ":$TAB" + $_.Value + [Environment]::NewLine
    }
    $WorkingData += [Environment]::NewLine
    $UserData += $WorkingData
}
$UserData | Out-File "LogData.csv"
$NumberedData | Out-File "MessageStats.txt"