From 8d03388413f6d35e4fbd6308c3819477729feaab Mon Sep 17 00:00:00 2001
From: Iristyle <Iristyle@github>
Date: Wed, 3 Apr 2013 12:28:08 -0400
Subject: [PATCH] fix(chrome installers): Check for existence

 - Don't launch Chrome installers if they're already
    installed
 - Heuristic for Canary is a path check
 - Heuristic for dev channel is path check + reg key
---
 .../GoogleChrome.Canary.nuspec                |  1 +
 .../tools/chocolateyInstall.ps1               | 20 +++++++++--
 GoogleChrome.Dev/GoogleChrome.Dev.nuspec      |  1 +
 GoogleChrome.Dev/tools/chocolateyInstall.ps1  | 35 +++++++++++++++----
 4 files changed, 49 insertions(+), 8 deletions(-)

diff --git a/GoogleChrome.Canary/GoogleChrome.Canary.nuspec b/GoogleChrome.Canary/GoogleChrome.Canary.nuspec
index 979b1c2..ed8f110 100644
--- a/GoogleChrome.Canary/GoogleChrome.Canary.nuspec
+++ b/GoogleChrome.Canary/GoogleChrome.Canary.nuspec
@@ -24,6 +24,7 @@
     <releaseNotes></releaseNotes>
   </metadata>
   <files>
+    <file src="..\core\ChromeHelpers.ps1" target="tools" />
     <file src="tools\**" target="tools" />
   </files>
 </package>
diff --git a/GoogleChrome.Canary/tools/chocolateyInstall.ps1 b/GoogleChrome.Canary/tools/chocolateyInstall.ps1
index 09080d2..96f2358 100644
--- a/GoogleChrome.Canary/tools/chocolateyInstall.ps1
+++ b/GoogleChrome.Canary/tools/chocolateyInstall.ps1
@@ -2,9 +2,25 @@ $package = 'Chrome.Canary'
 
 try {
 
-  $url = 'https://dl.google.com/tag/s/appguid%3D%7B4ea16ac7-fd5a-47c3-875b-dbf4a2008c20%7D%26iid%3D%7B0281A7E2-6043-D983-8BBA-7FD622493C9D%7D%26lang%3Den%26browser%3D4%26usagestats%3D1%26appname%3DGoogle%2520Chrome%2520Canary%26needsadmin%3Dfalse/update2/installers/ChromeSetup.exe'
+  function Get-CurrentDirectory
+  {
+    $thisName = $MyInvocation.MyCommand.Name
+    [IO.Path]::GetDirectoryName((Get-Content function:$thisName).File)
+  }
 
-  Install-ChocolateyPackage 'ChromeSetup' 'exe' '' $url
+  . (Join-Path (Get-CurrentDirectory) 'ChromeHelpers.ps1')
+
+  $installedPath = Get-ChromePath -Canary
+  if (Test-Path $installedPath)
+  {
+    Write-Host "Chrome Canary already installed at $installedPath"
+  }
+  else
+  {
+    $url = 'https://dl.google.com/tag/s/appguid%3D%7B4ea16ac7-fd5a-47c3-875b-dbf4a2008c20%7D%26iid%3D%7B0281A7E2-6043-D983-8BBA-7FD622493C9D%7D%26lang%3Den%26browser%3D4%26usagestats%3D1%26appname%3DGoogle%2520Chrome%2520Canary%26needsadmin%3Dfalse/update2/installers/ChromeSetup.exe'
+
+    Install-ChocolateyPackage 'ChromeSetup' 'exe' '' $url
+  }
 
   Write-ChocolateySuccess $package
 } catch {
diff --git a/GoogleChrome.Dev/GoogleChrome.Dev.nuspec b/GoogleChrome.Dev/GoogleChrome.Dev.nuspec
index e706fa9..93a71ff 100644
--- a/GoogleChrome.Dev/GoogleChrome.Dev.nuspec
+++ b/GoogleChrome.Dev/GoogleChrome.Dev.nuspec
@@ -19,6 +19,7 @@
     <releaseNotes></releaseNotes>
   </metadata>
   <files>
+    <file src="..\core\ChromeHelpers.ps1" target="tools" />
     <file src="tools\**" target="tools" />
   </files>
 </package>
diff --git a/GoogleChrome.Dev/tools/chocolateyInstall.ps1 b/GoogleChrome.Dev/tools/chocolateyInstall.ps1
index b3ffe88..76c4843 100644
--- a/GoogleChrome.Dev/tools/chocolateyInstall.ps1
+++ b/GoogleChrome.Dev/tools/chocolateyInstall.ps1
@@ -2,14 +2,37 @@ $package = 'Chrome.Dev'
 
 try {
 
-  $params = @{
-    PackageName = $package;
-    FileType = 'exe';
-    SilentArgs = '/silent /installsource silent /install';
-    Url = 'https://dl.google.com/tag/s/appguid%3D%7B8A69D345-D564-463C-AFF1-A69D9E530F96%7D%26iid%3D%7B0AA7B49A-29EA-0AE3-8A45-61F351F89414%7D%26lang%3Den%26browser%3D2%26usagestats%3D0%26appname%3DGoogle%2520Chrome%26needsadmin%3Dfalse%26ap%3D2.0-dev%26installdataindex%3Ddefaultbrowser/update2/installers/ChromeSetup.exe'
+  function Get-CurrentDirectory
+  {
+    $thisName = $MyInvocation.MyCommand.Name
+    [IO.Path]::GetDirectoryName((Get-Content function:$thisName).File)
   }
 
-  Install-ChocolateyPackage @params
+  . (Join-Path (Get-CurrentDirectory) 'ChromeHelpers.ps1')
+
+  $installedPath = Get-ChromePath
+  $params = @{
+    Path = 'HKCU:\Software\Google\Update\ClientState\{8A69D345-D564-463C-AFF1-A69D9E530F96}';
+    Name = 'ap';
+    ErrorAction = 'SilentlyContinue';
+  }
+  $installType = Get-ItemProperty @params | Select -ExpandProperty 'ap'
+
+  if ((Test-Path $installedPath) -and ($installType -match 'dev'))
+  {
+      Write-Host "Chrome Dev already installed at $installedPath"
+  }
+  else
+  {
+    $params = @{
+      PackageName = $package;
+      FileType = 'exe';
+      SilentArgs = '/silent /installsource silent /install';
+      Url = 'https://dl.google.com/tag/s/appguid%3D%7B8A69D345-D564-463C-AFF1-A69D9E530F96%7D%26iid%3D%7B0AA7B49A-29EA-0AE3-8A45-61F351F89414%7D%26lang%3Den%26browser%3D2%26usagestats%3D0%26appname%3DGoogle%2520Chrome%26needsadmin%3Dfalse%26ap%3D2.0-dev%26installdataindex%3Ddefaultbrowser/update2/installers/ChromeSetup.exe'
+    }
+
+    Install-ChocolateyPackage @params
+  }
 
   Write-ChocolateySuccess $package
 } catch {