; LedGrab NSIS Installer Script
; Cross-compilable on Linux: apt install nsis && makensis installer.nsi
;
; Expects the portable build to already exist at build/LedGrab/
; (run build-dist-windows.sh first)

!include "MUI2.nsh"
!include "FileFunc.nsh"

; ── Metadata ────────────────────────────────────────────────

!define APPNAME "LedGrab"
!define VBSNAME "start-hidden.vbs"
!define DESCRIPTION "Ambient lighting system — captures screen content and drives LED strips in real time"
!define VERSIONMAJOR 0
!define VERSIONMINOR 1
!define VERSIONBUILD 0

; Set from command line: makensis -DVERSION=0.1.0 installer.nsi
!ifndef VERSION
  !define VERSION "${VERSIONMAJOR}.${VERSIONMINOR}.${VERSIONBUILD}"
!endif

Name "${APPNAME} v${VERSION}"
OutFile "build\${APPNAME}-v${VERSION}-win-x64-setup.exe"
InstallDir "$LOCALAPPDATA\${APPNAME}"
InstallDirRegKey HKCU "Software\${APPNAME}" "InstallDir"
RequestExecutionLevel user
SetCompressor /SOLID lzma

; ── Modern UI Configuration ─────────────────────────────────

!define MUI_ABORTWARNING

; ── Pages ───────────────────────────────────────────────────

; Use MUI_FINISHPAGE_RUN_FUNCTION instead of MUI_FINISHPAGE_RUN_PARAMETERS —
; NSIS Exec command chokes on the quoting with RUN_PARAMETERS.
!define MUI_FINISHPAGE_RUN ""
!define MUI_FINISHPAGE_RUN_TEXT "Launch ${APPNAME}"
!define MUI_FINISHPAGE_RUN_FUNCTION LaunchApp

!insertmacro MUI_PAGE_WELCOME
!insertmacro MUI_PAGE_DIRECTORY
!insertmacro MUI_PAGE_COMPONENTS
!insertmacro MUI_PAGE_INSTFILES
!insertmacro MUI_PAGE_FINISH

!insertmacro MUI_UNPAGE_CONFIRM
!insertmacro MUI_UNPAGE_INSTFILES

!insertmacro MUI_LANGUAGE "English"

; ── Functions ─────────────────────────────────────────────

Function LaunchApp
  ExecShell "open" "wscript.exe" '"$INSTDIR\scripts\${VBSNAME}"'
  Sleep 2000
  ExecShell "open" "http://localhost:8080/"
FunctionEnd

; Detect running instance before install (file lock check on python.exe)
Function .onInit
  IfFileExists "$INSTDIR\python\python.exe" 0 done
  ClearErrors
  FileOpen $0 "$INSTDIR\python\python.exe" a
  IfErrors locked
  FileClose $0
  Goto done
  locked:
    MessageBox MB_YESNOCANCEL|MB_ICONEXCLAMATION \
      "${APPNAME} is currently running.$\n$\nYes = Stop and continue$\nNo = Continue anyway (may cause errors)$\nCancel = Abort" \
      IDYES kill IDNO done
    Abort
    kill:
      nsExec::ExecToLog 'wmic process where "ExecutablePath like $\'%${APPNAME}%python%$\'" call terminate'
      Sleep 2000
  done:
FunctionEnd

; ── Installer Sections ──────────────────────────────────────

Section "!${APPNAME} (required)" SecCore
  SectionIn RO

  SetOutPath "$INSTDIR"

  ; Copy the entire portable build
  File /r "build\LedGrab\python"
  File /r "build\LedGrab\app"
  File /r "build\LedGrab\scripts"
  File "build\LedGrab\LedGrab.bat"

  ; Create data and logs directories
  CreateDirectory "$INSTDIR\data"
  CreateDirectory "$INSTDIR\logs"

  ; Create uninstaller
  WriteUninstaller "$INSTDIR\uninstall.exe"

  ; Start Menu shortcuts
  CreateDirectory "$SMPROGRAMS\${APPNAME}"
  CreateShortcut "$SMPROGRAMS\${APPNAME}\${APPNAME}.lnk" \
    "wscript.exe" '"$INSTDIR\scripts\${VBSNAME}"' \
    "$INSTDIR\python\pythonw.exe" 0
  CreateShortcut "$SMPROGRAMS\${APPNAME}\Uninstall.lnk" "$INSTDIR\uninstall.exe"

  ; Registry: install location + Add/Remove Programs entry
  WriteRegStr HKCU "Software\${APPNAME}" "InstallDir" "$INSTDIR"
  WriteRegStr HKCU "Software\${APPNAME}" "Version" "${VERSION}"

  WriteRegStr HKCU "Software\Microsoft\Windows\CurrentVersion\Uninstall\${APPNAME}" \
    "DisplayName" "${APPNAME}"
  WriteRegStr HKCU "Software\Microsoft\Windows\CurrentVersion\Uninstall\${APPNAME}" \
    "DisplayVersion" "${VERSION}"
  WriteRegStr HKCU "Software\Microsoft\Windows\CurrentVersion\Uninstall\${APPNAME}" \
    "UninstallString" '"$INSTDIR\uninstall.exe"'
  WriteRegStr HKCU "Software\Microsoft\Windows\CurrentVersion\Uninstall\${APPNAME}" \
    "InstallLocation" "$INSTDIR"
  WriteRegStr HKCU "Software\Microsoft\Windows\CurrentVersion\Uninstall\${APPNAME}" \
    "Publisher" "Alexei Dolgolyov"
  WriteRegStr HKCU "Software\Microsoft\Windows\CurrentVersion\Uninstall\${APPNAME}" \
    "URLInfoAbout" "https://git.dolgolyov-family.by/alexei.dolgolyov/wled-screen-controller-mixed"
  WriteRegDWORD HKCU "Software\Microsoft\Windows\CurrentVersion\Uninstall\${APPNAME}" \
    "NoModify" 1
  WriteRegDWORD HKCU "Software\Microsoft\Windows\CurrentVersion\Uninstall\${APPNAME}" \
    "NoRepair" 1

  ; Calculate installed size for Add/Remove Programs
  ${GetSize} "$INSTDIR" "/S=0K" $0 $1 $2
  IntFmt $0 "0x%08X" $0
  WriteRegDWORD HKCU "Software\Microsoft\Windows\CurrentVersion\Uninstall\${APPNAME}" \
    "EstimatedSize" "$0"
SectionEnd

Section "Desktop shortcut" SecDesktop
  CreateShortcut "$DESKTOP\${APPNAME}.lnk" \
    "wscript.exe" '"$INSTDIR\scripts\${VBSNAME}"' \
    "$INSTDIR\python\pythonw.exe" 0
SectionEnd

Section "Start with Windows" SecAutostart
  CreateShortcut "$SMSTARTUP\${APPNAME}.lnk" \
    "wscript.exe" '"$INSTDIR\scripts\${VBSNAME}"' \
    "$INSTDIR\python\pythonw.exe" 0
SectionEnd

; ── Section Descriptions ────────────────────────────────────

!insertmacro MUI_FUNCTION_DESCRIPTION_BEGIN
  !insertmacro MUI_DESCRIPTION_TEXT ${SecCore} \
    "Install ${APPNAME} server and all required files."
  !insertmacro MUI_DESCRIPTION_TEXT ${SecDesktop} \
    "Create a shortcut on your desktop."
  !insertmacro MUI_DESCRIPTION_TEXT ${SecAutostart} \
    "Start ${APPNAME} automatically when you log in."
!insertmacro MUI_FUNCTION_DESCRIPTION_END

; ── Uninstaller ─────────────────────────────────────────────

Section "Uninstall"
  ; Remove shortcuts
  Delete "$SMPROGRAMS\${APPNAME}\${APPNAME}.lnk"
  Delete "$SMPROGRAMS\${APPNAME}\Uninstall.lnk"
  RMDir "$SMPROGRAMS\${APPNAME}"
  Delete "$DESKTOP\${APPNAME}.lnk"
  Delete "$SMSTARTUP\${APPNAME}.lnk"

  ; Remove application files (but NOT data/ — preserve user config)
  RMDir /r "$INSTDIR\python"
  RMDir /r "$INSTDIR\app"
  RMDir /r "$INSTDIR\scripts"
  Delete "$INSTDIR\LedGrab.bat"
  Delete "$INSTDIR\uninstall.exe"

  ; Remove logs (but keep data/)
  RMDir /r "$INSTDIR\logs"

  ; Try to remove install dir (only succeeds if empty — data/ may remain)
  RMDir "$INSTDIR"

  ; Remove registry keys
  DeleteRegKey HKCU "Software\${APPNAME}"
  DeleteRegKey HKCU "Software\Microsoft\Windows\CurrentVersion\Uninstall\${APPNAME}"
SectionEnd