;------------------
; ${socket.name} Launcher
;------------------
; Creates a ${build.socket.name}.exe launcher which performs automatic JRE detection

!include x64.nsh
!include LogicLib.nsh
!addincludedir "${windows.nsis.addons}/Include"
!include StdUtils.nsh

; Run this exe as non-admin
RequestExecutionLevel user

; Application information
Name "${socket.name}"
Caption "${socket.name}"
Icon "${basedir}\${branding.dir}\${windows.icon}"
OutFile "${build.socket.name}.exe"
 
SilentInstall silent
AutoCloseWindow true
ShowInstDetails nevershow

; Full path to jar
!define JAR "$EXEDIR\${build.socket.name}.jar"

Section ""  
  ${If} ${RunningX64}
  ${DisableX64FSRedirection}
  ${EndIf}
  Call FindJRE
  Pop $R0
 
  ; change for your purpose (-jar etc.)
  StrCpy $0 '"$R0" -jar "${JAR}"'
 
  SetOutPath $EXEDIR

  Exec $0
  ${If} ${RunningX64}
  ${EnableX64FSRedirection}
  ${EndIf} 
SectionEnd

;  FindJRE (find "javaw.exe")
;  1 - Search in .\jre directory (e.g. JRE Installed with application)
;  2 - Search in JAVA_HOME environment variable
;  3 - Search in the native registry
;  4 - Search in the 32-bit registry
;  5 - Fall-back to "javaw.exe" (such as in current dir or PATH) 
Function FindJRE
  Push $R0
  Push $R1

  ClearErrors
  StrCpy $R0 "$EXEDIR\jre\bin\javaw.exe"
  IfFileExists $R0 JreFound
  StrCpy $R0 ""

  ClearErrors
  ReadEnvStr $R0 "JAVA_HOME"
  StrCpy $R0 "$R0\bin\javaw.exe"
  IfErrors 0 JreFound
 
  ClearErrors
  ReadRegStr $R1 HKLM "Software\JavaSoft\Java Runtime Environment" "CurrentVersion"
  ReadRegStr $R0 HKLM "Software\JavaSoft\Java Runtime Environment\$R1" "JavaHome"
  StrCpy $R0 "$R0\bin\javaw.exe"
  IfErrors 0 JreFound
  
  ; Fall-back to 32-bit registry
  ${If} ${RunningX64}
  ClearErrors
  ReadRegStr $R1 HKLM "Software\Wow6432Node\JavaSoft\Java Runtime Environment" "CurrentVersion"
  ReadRegStr $R0 HKLM "Software\Wow6432Node\JavaSoft\Java Runtime Environment\$R1" "JavaHome"
  StrCpy $R0 "$R0\bin\javaw.exe"
  IfErrors 0 JreFound
  ${EndIf}
  
  ; Give up.  Use javaw.exe and hope it works
  StrCpy $R0 "javaw.exe"
 
 JreFound:
  Pop $R1
  Exch $R0
FunctionEnd

Function .onInit
    ${If} ${RunningX64}
		;  Force 64-bit registry view by default
        SetRegView 64
    ${EndIf}
FunctionEnd