Split-Uri.ps1

class ParsedUriParameter {
	[string]$Key
	[string]$Value
	[string]$ValueUnescaped

	ParsedUriParameter([string]$key, [string]$value) {
		$this.Key            = $key
		$this.Value          = $value
		$this.ValueUnescaped = [uri]::UnescapeDataString($value)
	}
}

class ParsedUri : Uri {
	[string]$Scheme
	[string]$Host
	[string]$Port
	[string]$Path
	[string]$Query
	[System.Collections.Generic.List[ParsedUriParameter]]$QueryParameters
	[string]$Fragment

	ParsedUri([uri]$Uri) : base($Uri) {
		$this.Scheme   = $Uri.Scheme
		$this.Host     = $Uri.Host
		$this.Port     = $Uri.Port
		$this.Path     = $Uri.AbsolutePath
		$this.Query    = $Uri.Query
		$this.Fragment = $Uri.Fragment

		$this.QueryParameters = [System.Collections.Generic.List[ParsedUriParameter]]::new()

		$Uri.Query.TrimStart('?').Split('&') | ForEach-Object {
			$key, $value = $_ -split '=', 2
			$this.QueryParameters.Add([ParsedUriParameter]::new($key, $value))
		}
	}
}

function Split-Uri {
	[cmdletbinding()]
	param (
		[Parameter(Mandatory=$true, ValueFromPipeline, ValueFromPipelineByPropertyName)]
		[uri]$Uri
	)

	process {
		if ([string]::IsNullOrWhiteSpace($Uri.Scheme)) {
			$Uri = [uri]::new("http://$Uri")
		}
		[ParsedUri]::new($Uri)
	}
}