Download videos and slides from Microsoft conferences

conference_downloads.ps1

Param
(
    [Parameter(Mandatory=$false)]
    [String]
    $DownloadLocation
)
	
cls

# The script has been tested on Powershell 3.0
Set-StrictMode -Version 3

# Following modifies the Write-Verbose behavior to turn the messages on globally for this session
$VerbosePreference = "Continue"

#$ErrorActionPreference = 'Stop'

if ($DownloadLocation -eq $null -or $DownloadLocation.Length -eq 0)
{
	$DownloadLocation = (Get-Location -PSProvider FileSystem).ProviderPath 
}

$rss = (new-object net.webclient)
 
 
function DownloadFile
{
	param ([string] $source, [string] $destination)
	
	
	
	try
	{
		if ((Test-Path -Path $destination -PathType Leaf))
        {
            Write-Host 'Skipping file, already downloaded' -ForegroundColor Yellow}
        else
		{
            Write-Output "Downloading '$source' to '$destination'"

			$wc = (New-Object System.Net.WebClient)
     		$wc.DownloadFile($source, $destination)
		}
	}
	catch
	{
		$ex = $_.Exception.InnerException
		Write-Error "Failed to download file '$source'. $ex.Message"
	}
}
       	

#Set the username for windows auth proxy
#$rss.proxy.credentials=[system.net.credentialcache]::defaultnetworkcredentials

# Set the RSS feed path
# TechEd NA 2013
#$dataFeed = "http://channel9.msdn.com/Events/TechEd/NorthAmerica/2013/rss/mp4high/?sort=sequential&direction=desc&term=&r=Developer+Tools+%26+Application+Lifecycle+Management&r=Windows+Azure+Application+Development&y=Breakout&Media=true#fbid=FDnmapgI5Hf"
#
# TechEd NA 2013 - All
#$dataFeed = "http://channel9.msdn.com/Events/TechEd/NorthAmerica/2013/RSS/mp4high"
#
#TechEd NA 2013 - Windows Azure
#$dataFeed = "http://channel9.msdn.com/Events/TechEd/NorthAmerica/2013/rss/mp4high/?sort=sequential&direction=desc&term=&r=Windows+Azure+Application+Development&y=Breakout&Media=true#fbid=FDnmapgI5Hf"
#
# TechEd Europe 2013 - All
#$dataFeed = "http://channel9.msdn.com/Events/TechEd/Europe/2013/RSS/mp4high"
#
# TechEd Europe 2013 - Windows Azure
#$dataFeed = "http://channel9.msdn.com/Events/TechEd/europe/2013/RSS/mp4high/?sort=sequential&direction=desc&term=&r=Windows+Azure+Application+Development&y=Breakout&Media"
#
#BUILD 2013 - All
#$dataFeed = "http://channel9.msdn.com/Events/Build/2013/RSS/mp4high#theSessions"
#
#BUILD 2014 - Azure
#$dataFeed = "http://s.ch9.ms/Events/Build/2014/rss/mp4med?sort=sequential&direction=desc&term=&tag=azure"

#TechEd NA 2014
#$dataFeed = "http://s.ch9.ms/Events/TechEd/NorthAmerica/2014/RSS/mp4?sort=sequential&direction=desc&term=microsoft%20azure"

#BUILD 2016 - Azure
$dataFeed = "http://s.ch9.ms/Events/Build/2016/RSS/mp4med?sort=sequential&direction=desc&term=&tag=azure"

 
$a = ([xml]$rss.downloadstring($dataFeed)) 
$a.rss.channel.item | foreach{
	
	
	if ($_.category -eq "microsoft-azure" -or $_.category -eq "azure")
	{
        $sessionNumber = $_.link.Substring($_.link.LastIndexOf("/") + 1)
        
        $mediaUrl = New-Object System.Uri($_.enclosure.url)
  	    $pptxUrl = New-Object System.Uri($_.enclosure.url.Replace(".mp4", ".pptx"))
   	    $file = $_.creator + " - " + $_.title.Replace(":", "-").Replace("?", "").Replace("/", "-").Replace("<", "-") + " ($sessionNumber)" + ".mp4"
   	    $pptx = $_.creator + " - " + $_.title.Replace(":", "-").Replace("?", "").Replace("/", "-").Replace("<", "-") + " ($sessionNumber)" + ".pptx"


		$downloadFile = $DownloadLocation + "\" + $file
		DownloadFile -source $mediaUrl -destination $downloadFile

		$downloadFile = $DownloadLocation + "\" + $pptx
		DownloadFile -source $pptxUrl -destination $downloadFile
		
		# TODO: try alternate location for PPTX - only tested with BUILD 2014, 2016 and TechEd NA 2014.  Need to make dynamic.
		
		#$pptxUrlAlt = "http://video.ch9.ms/sessions/build/2014/" + $sessionNumber + ".pptx"
		#$pptxUrlAlt = "http://video.ch9.ms/sessions/teched/na/2014/" + $sessionNumber + ".pptx"
        $pptxUrlAlt = "https://sec.ch9.ms/sessions/build/2016/" + $sessionNumber + ".pptx"
		$downloadFile = $DownloadLocation + "\" + $pptx
		DownloadFile -source $pptxUrlAlt -destination $downloadFile
	}
}