From 0f2f1ed53db68c77735edd8913848cbe54b9fed8 Mon Sep 17 00:00:00 2001
From: Chris McGrath <admin@cpmcgrath.com>
Date: Fri, 15 Apr 2016 10:49:00 +1000
Subject: [PATCH] Download Skype before uninstalling. If it's a update, don't
 add the RemoveStartup parameter (respect existing settings) #102

---
 automatic/skype/tools/chocolateyInstall.ps1 | 86 ++++++++++++++-------
 1 file changed, 56 insertions(+), 30 deletions(-)

diff --git a/automatic/skype/tools/chocolateyInstall.ps1 b/automatic/skype/tools/chocolateyInstall.ps1
index 6c64dcfaf..350fe4b39 100644
--- a/automatic/skype/tools/chocolateyInstall.ps1
+++ b/automatic/skype/tools/chocolateyInstall.ps1
@@ -7,44 +7,70 @@ function isInstalled() {
   return Get-WmiObject -Class Win32_Product | Where-Object {$_.Name -match 'Skype\u2122 [\d\.]+$'}
 }
 
-$packageName = 'skype'
-$fileType = 'msi'
-# http://community.skype.com/t5/Windows-archive/Unattended-install/td-p/184628s
-$silentArgs = '/qn /norestart STARTSKYPE=FALSE TRANSFORMS=:RemoveDesktopShortcut.mst TRANSFORMS=:RemoveStartup.mst'
+function downloadInstaller {
+    param(
+      [string] $packageName,
+      [alias("installerType")][string] $fileType = 'exe',
+      [string] $url,
+      [alias("url64")][string] $url64bit = '',
+      [string] $checksum = '',
+      [string] $checksumType = '',
+      [string] $checksum64 = '',
+      [string] $checksumType64 = '',
+      [hashtable] $options = @{Headers=@{}}
+    )
+    $chocTempDir = Join-Path $env:TEMP 'chocolatey'
+    $tempDir = Join-Path $chocTempDir "$packageName"
+    if ($env:packageVersion -ne $null) {$tempDir = Join-Path $tempDir "$env:packageVersion"; }
+    if (![System.IO.Directory]::Exists($tempDir)) { [System.IO.Directory]::CreateDirectory($tempDir) | Out-Null }
+    $file = Join-Path $tempDir "$($packageName)Install.$fileType"
+    $filePath = Get-ChocolateyWebFile $packageName $file $url $url64bit -checksum $checksum -checksumType $checksumType -checksum64 $checksum64 -checksumType64 $checksumType64 -options $options -getOriginalFileName
 
-$url = '{{DownloadUrl}}'
+    $filePath = if ($myval -ne $null) { $filePath } else { $file }
+    return $filePath
+}
+
+function uninstallExisting($appInstalled, $silentArgs) {
+    # If Skype (in any version) is already installed on the computer, remove it first, otherwise the
+    # installation of Skype will fail with an error.
+    $msiArgs = $('/x' + $appInstalled.IdentifyingNumber + ' ' + $silentArgs)
+    Write-Host "Uninstalling previous version of Skype, otherwise installing the new version won’t work."
+
+    Start-ChocolateyProcessAsAdmin $msiArgs 'msiexec'
 
-try {
+    # This loop checks every 5 seconds if Skype is already uninstalled.
+    # Then it proceeds with the download and installation of the Skype
+    # version specified in the package.
+    do {
+      Start-Sleep -Seconds 5
+      $i += 1
 
-  $appInstalled = isInstalled
+      # Break if too much time passed
+      if ($i -gt 12) {
+        Write-Error 'Could not uninstall the previous version of Skype.'
+        break
+      }
 
-  if ($appInstalled) {
-      # If Skype (in any version) is already installed on the computer, remove it first, otherwise the
-      # installation of Skype will fail with an error.
-      $msiArgs = $('/x' + $appInstalled.IdentifyingNumber + ' ' + $silentArgs)
-      Write-Host "Uninstalling previous version of Skype, otherwise installing the new version won’t work."
-      Start-ChocolateyProcessAsAdmin $msiArgs 'msiexec'
+    } until (-not (isInstalled))
+}
+
+$packageName = 'skype'
+$fileType    = 'msi'
 
-      # This loop checks every 5 seconds if Skype is already uninstalled.
-      # Then it proceeds with the download and installation of the Skype
-      # version specified in the package.
-      do {
-        Start-Sleep -Seconds 5
-        $i += 1
+# http://community.skype.com/t5/Windows-archive/Unattended-install/td-p/184628s
+$updatesilentArgs = '/qn /norestart STARTSKYPE=FALSE TRANSFORMS=:RemoveDesktopShortcut.mst'
+$silentArgs       = "$updatesilentArgs TRANSFORMS=:RemoveStartup.mst"
+
+$url = '{{DownloadUrl}}'
 
-        # Break if too much time passed
-        if ($i -gt 12) {
-          Write-Error 'Could not uninstall the previous version of Skype.'
-          break
-        }
 
-      } until (-not (isInstalled))
-  }
+$appInstalled = isInstalled
+$filePath     = downloadInstaller $packageName $fileType $url
 
-  Install-ChocolateyPackage $packageName $fileType $silentArgs $url
+if ($appInstalled) {
+    uninstallExisting $appInstalled $updatesilentArgs
 
-} catch {
-  Write-ChocolateyFailure $packageName $($_.Exception.Message)
-  throw
+    $silentArgs = $updatesilentArgs
 }
 
+Install-ChocolateyInstallPackage $packageName $fileType $silentArgs $filePath