(*
This script is meant to
	1) Identify installed instances of the product
	2) check whether the user has write-access (and if not
	ask for authentification)
	3) install the shipped tarball
*)

-- strings for localisations - to be meant to be replaced
-- by a makefile or similar
set OKLabel to "[OKLabel]"
set InstallLabel to "[InstallLabel]"
set AbortLabel to "[AbortLabel]"
set intro to "[IntroText1]

[IntroText2]

[IntroText3]"
set chooseMyOwn to "[ChooseMyOwnText]"
set listPrompt to "[ListPromptText]"
set chooseManual to "[ChooseManualText]"
set listOKLabel to "[ListOKLabelText]"
set listCancelLabel to "[ListCancelLabel]"
set appInvalid to "[AppInvalidText1]

[AppInvalidText2]" -- string will begin with the chosen application's name
set startInstall to "[StartInstallText1]

[StartInstallText2]"
set IdentifyQ to "[IdentifyQText]

[IdentifyQText2]"
set IdentifyYES to "[IdentifyYES]"
set IdentifyNO to "[IdentifyNO]"
set installFailed to "[InstallFailedText]"
set installComplete to "[InstallCompleteTextPatch]"

set sourcedir to (do shell script "dirname " & quoted form of POSIX path of (path to of me))

display dialog intro buttons {AbortLabel, InstallLabel} default button 2

if (button returned of result) is AbortLabel then
	return 2
end if

set the found_ooos to (do shell script "mdfind \"kMDItemContentType == 'com.apple.application-bundle' && kMDItemDisplayName == '[PRODUCTNAME]*' && kMDItemDisplayName != '[FULLPRODUCTNAME].app'\"") & "
" & chooseMyOwn

-- the choice returned is of type "list"
-- Show selection dialog only if more than one or no product was found
if (get first paragraph of found_ooos) is "" then
  set the choice to (choose from list of paragraphs in found_ooos default items (get last paragraph of found_ooos) with prompt listPrompt OK button name listOKLabel cancel button name listCancelLabel)
  if choice is false then
	  -- do nothing, the user cancelled the installation
    	return 2 --aborted by user
  else if (choice as string) is chooseMyOwn then
	  -- yeah, one needs to use "choose file", otherwise
	  -- the user would not be able to select the .app
	  set the choice to POSIX path of (choose file with prompt chooseManual of type "com.apple.application-bundle" without showing package contents and invisibles)
  end if
else if (get second paragraph of found_ooos) is chooseMyOwn then
  -- set choice to found installation
  set the choice to (get first paragraph of found_ooos)
else 
  set the choice to (choose from list of paragraphs in found_ooos default items (get first paragraph of found_ooos) with prompt listPrompt OK button name listOKLabel cancel button name listCancelLabel)
  if choice is false then
	  -- do nothing, the user cancelled the installation
    	return 2 --aborted by user
  else if (choice as string) is chooseMyOwn then
	  -- yeah, one needs to use "choose file", otherwise
	  -- the user would not be able to select the .app
	  set the choice to POSIX path of (choose file with prompt chooseManual of type "com.apple.application-bundle" without showing package contents and invisibles)
  end if
end if	

-- now only check whether the path is really from [PRODUCTNAME]
try
	do shell script "grep '<string>[PRODUCTNAME] [PRODUCTVERSION]'   " & quoted form of (choice as string) & "/Contents/Info.plist"
on error
	display dialog (choice as string) & appInvalid buttons {InstallLabel} default button 1 with icon 0
	return 3 --wrong target-directory
end try

(*
display dialog startInstall buttons {AbortLabel, InstallLabel} default button 2

if (button returned of result) is AbortLabel then
	return 2
end if
*)

set tarCommand to "/usr/bin/tar -C " & quoted form of (choice as string) & " -xjf " & quoted form of sourcedir & "/tarball.tar.bz2"
try
	do shell script tarCommand
	
on error errMSG number errNUM
	display dialog IdentifyQ buttons {IdentifyYES, IdentifyNO} with icon 2
	if (button returned of result) is IdentifyYES then
		try
			do shell script tarCommand with administrator privileges
		on error errMSG number errNUM
			display dialog installFailed buttons {OKLabel} default button 1 with icon 0
			-- -60005 username/password wrong
			-- -128   aborted by user
			-- 2 error from tar - tarball not found (easy to test)
			return errNUM
		end try
	else
		return 2 -- aborted by user
	end if
end try

display dialog installComplete buttons {OKLabel} default button 1