Improved "The Ultimate Script to download Microsoft Ignite Videos AND slides!" script

gistfile1.ps1

#Script written by Vlad Catrinescu
#Visit my site www.absolute-sharepoint.com
#Twitter: @vladcatrinescu
#Originally Posted here: http://absolute-sharepoint.com/2015/05/the-ultimate-script-to-download-microsoft-ignite-videos-and-slides.html

Param(
  [string]$keyword
)


######    Variables  #####

#Location - Preferably enter something not too long to not have filename problems! cut and paste them afterwards
$downloadlocation = "C:\Ignite"
#Ignite 2015 Videos RSS Feed
[Environment]::CurrentDirectory=(Get-Location -PSProvider FileSystem).ProviderPath 
$rss = (new-object net.webclient)
$video1 = ([xml]$rss.downloadstring("http://s.ch9.ms/events/ignite/2015/rss/mp4high"))
$video2 = ([xml]$rss.downloadstring("http://s.ch9.ms/events/ignite/2015/rss/mp4high?page=2")) 
$slide1 = ([xml]$rss.downloadstring("http://s.ch9.ms/events/ignite/2015/rss/slides"))
$slide2 = ([xml]$rss.downloadstring("http://s.ch9.ms/events/ignite/2015/rss/slides?page=2"))

#other qualities for the videos only. Choose the one you want!
# $a = ([xml]$rss.downloadstring("http://channel9.msdn.com/events/ignite/2015/rss/mp4")) 
#$a = ([xml]$rss.downloadstring("http://channel9.msdn.com/events/ignite/2015/rss/mp3")) 


#SCRIPT/ Functions  Do not touch below this line :)#
if (-not (Test-Path $downloadlocation)) { 
		Write-Host "Folder $fpath dosen't exist. Creating it..."  
		New-Item $downloadlocation -type directory 
	}
set-location $downloadlocation


function DownloadSlides($filter,$videourl)
{
    try {    
    $videourl.rss.channel.item | Where{($_.title -like “*$filter*”)} | foreach{   
	    $code = $_.comments.split("/") | select -last 1	   
	
	    # Grab the URL for the PPTX file
	    $urlpptx = New-Object System.Uri($_.enclosure.url)  
        $filepptx = $code + "-" + $_.creator + " - " + $_.title.Replace(":", "-").Replace("?", "").Replace("/", "-").Replace("<", "").Replace("|", "").Replace('"',"").Replace("*","")
	    $filepptx = $filepptx.substring(0, [System.Math]::Min(120, $filepptx.Length))
	    $filepptx = $filepptx.trim()
	    $filepptx = $filepptx + ".pptx" 
	    if ($code -ne "")
	    {
		     $folder = $code + " - " + $_.title.Replace(":", "-").Replace("?", "").Replace("/", "-").Replace("<", "").Replace("|", "").Replace('"',"").Replace("*","")
		     $folder = $folder.substring(0, [System.Math]::Min(100, $folder.Length))
		     $folder = $folder.trim()
	    }
	    else
	    {
		    $folder = "NoCodeSessions"
	    }
	
	    if (-not (Test-Path $folder)) { 
		    Write-Host "Folder $folder dosen't exist. Creating it..."  
		    New-Item $folder -type directory 
	    }
	
	    # Make sure the PowerPoint file doesn't already exist
	    if (!(test-path "$downloadlocation\$folder\$filepptx"))     
	    { 	
		    # Echo out the  file that's being downloaded
		    $filepptx
		    #$wc = (New-Object System.Net.WebClient)  

		    # Download the MP4 file
		    #$wc.DownloadFile($urlpptx, "$downloadlocation\$filepptx")
            Start-BitsTransfer $urlpptx "$downloadlocation\$filepptx" -DisplayName $filepptx
		    mv $filepptx $folder 

	    }
	    }

     }
    
    catch{
    
    $ErrorMessage = $_.Exception.Message
    Write-host "$ErrorMessage"
    }
    }


function DownloadVideos($filter,$slideurl)
{
#download all the mp4
# Walk through each item in the feed 
$slideurl.rss.channel.item | Where{($_.title -like “*$filter*”)} | foreach{   
	$code = $_.comments.split("/") | select -last 1	   
	
	# Grab the URL for the MP4 file
	$url = New-Object System.Uri($_.enclosure.url)  
	
	# Create the local file name for the MP4 download
	$file = $code + "-" + $_.creator + "-" + $_.title.Replace(":", "-").Replace("?", "").Replace("/", "-").Replace("<", "").Replace("|", "").Replace('"',"").Replace("*","")
	$file = $file.substring(0, [System.Math]::Min(120, $file.Length))
	$file = $file.trim()
	$file = $file + ".mp4"  
	
	if ($code -ne "")
	{
		 $folder = $code + " - " + $_.title.Replace(":", "-").Replace("?", "").Replace("/", "-").Replace("<", "").Replace("|", "").Replace('"',"").Replace("*","")
		 $folder = $folder.substring(0, [System.Math]::Min(100, $folder.Length))
		 $folder = $folder.trim()
	}
	else
	{
		$folder = "NoCodeSessions"
	}
	
	if (-not (Test-Path $folder)) { 
		Write-Host "Folder $folder) dosen't exist. Creating it..."  
		New-Item $folder -type directory 
	}
	
	
	
	# Make sure the MP4 file doesn't already exist

	if (!(test-path "$folder\$file"))     
	{ 	
		# Echo out the  file that's being downloaded
		$file
		#$wc = (New-Object System.Net.WebClient)  

		# Download the MP4 file
		#$wc.DownloadFile($url, "$downloadlocation\$file")
        Start-BitsTransfer $url "$downloadlocation\$file" -DisplayName $file
		mv $file $folder
	}

#text description from session
	$OutFile = New-Item -type file "$($downloadlocation)\$($Folder)\$($Code.trim()).txt" -Force  
    $Category = "" ; $Content = ""
    $_.category | foreach {$Category += $_ + ","}
    $Content = $_.title.trim() + "`r`n" + $_.creator + "`r`n" + $_.summary.trim() + "`r`n" + "`r`n" + $Category.Substring(0,$Category.Length -1)
   add-content $OutFile $Content
		
	}
}



if ($keyword)
{
    $keywords = $keyword.split(",")
    
    

    foreach ($k in $keywords)
    {
        $k.trim()
        Write-Host "You are now downloading the sessions with the keyword $k"
        DownloadSlides $k $slide1
        DownloadSlides $k $slide2
        DownloadVideos $k $video1
        DownloadVideos $k $video2
    }
}
else
{
    DownloadSlides " " $slide1
    DownloadSlides " " $slide2
    DownloadVideos " " $video1
    DownloadVideos " " $video2
}