theseus/nsis/installer.nsh

; Theseus Navigator NSIS include — bundles Ariadne's Thread as an opt-out.
;
; UI: a dedicated wizard page with a real checkbox (pre-checked) instead of a
; MessageBox popup. Shown FIRST in the install flow because electron-builder's
; template places our `!include` before its own MUI_PAGE_* inserts and NSIS
; processes page directives in file order — so this is the earliest hook
; we have without editing the template. Framed as "Options" so it reads
; naturally as a preamble before the standard Welcome/License/Directory pages.
; Skipped entirely (`Abort`) if Ariadne's Thread is already installed, so
; upgrades of Theseus don't nag.
;
; The uninstall side stays a symmetric MessageBox (a full custom uninstaller
; page is overkill for one yes/no during a rare event).

!include "nsDialogs.nsh"
!include "LogicLib.nsh"
!include "MUI2.nsh"

Var AriadneCheckbox
Var InstallAriadneFlag

!define ARIADNE_INSTALLER "AriadneResolver-Setup-0.1.0.exe"
!define ARIADNE_UNINST_KEY "Software\Microsoft\Windows\CurrentVersion\Uninstall\{7E7A5F1C-3B4E-4C8A-9E1D-ARIADNERSLVR}_is1"

Page custom AriadnePageCreate AriadnePageLeave

Function AriadnePageCreate
  ; Silent install (/S) — no user, no page. Default to "don't touch Ariadne";
  ; the whole point of /S is unattended, and existing Ariadne stays as-is.
  ; nsDialogs::Create in silent mode returns a dialog handle we can't display,
  ; so we short-circuit BEFORE calling any nsDialogs API.
  IfSilent ariadne_page_silent ariadne_page_check
  ariadne_page_silent:
  StrCpy $InstallAriadneFlag "0"
  Return

  ariadne_page_check:
  ; Skip the page entirely if Ariadne's Thread is already on this machine —
  ; nothing to offer. Registry lookup uses HKLM 64-bit view because Ariadne's
  ; Inno script sets ArchitecturesInstallIn64BitMode=x64compatible.
  SetRegView 64
  ReadRegStr $R0 HKLM "${ARIADNE_UNINST_KEY}" "UninstallString"
  SetRegView lastused
  StrCmp $R0 "" ariadne_page_show 0
  StrCpy $InstallAriadneFlag "0"
  Abort

  ariadne_page_show:
  !insertmacro MUI_HEADER_TEXT "Optional add-ons" "Choose whether to also install Ariadne's Thread alongside Theseus Navigator."

  nsDialogs::Create 1018
  Pop $0
  StrCmp $0 "error" ariadne_page_bail 0

  ${NSD_CreateLabel} 0 0 100% 44u "Ariadne's Thread is a small system-wide resolver that lets BCDN — Bitcoin Cash Domain Names — work in Chrome, Edge, Firefox, and every other browser on this machine.$\r$\n$\r$\nWithout it, only Theseus resolves these names. You can install or remove it later."
  Pop $0

  ${NSD_CreateCheckbox} 0 60u 100% 12u "Install Ariadne's Thread (recommended)"
  Pop $AriadneCheckbox
  ${NSD_Check} $AriadneCheckbox

  ${NSD_CreateLabel} 0 80u 100% 20u "It runs a UAC (admin) prompt of its own during install. Theseus Navigator's own setup continues after this page."
  Pop $0

  nsDialogs::Show
  Return

  ariadne_page_bail:
  StrCpy $InstallAriadneFlag "0"
  Abort
FunctionEnd

Function AriadnePageLeave
  ${NSD_GetState} $AriadneCheckbox $InstallAriadneFlag
FunctionEnd

!macro customInstall
  ; Read the state saved from AriadnePageLeave. BST_CHECKED == 1.
  ${If} $InstallAriadneFlag == ${BST_CHECKED}
    ; Ariadne's Inno installer runs its own UAC prompt (PrivilegesRequired=admin).
    ; ExecWait blocks until Ariadne finishes or the user cancels UAC; either
    ; way, Theseus install continues normally afterwards.
    ExecWait '"$INSTDIR\resources\${ARIADNE_INSTALLER}" /VERYSILENT /SUPPRESSMSGBOXES /NORESTART'
  ${EndIf}
!macroend

!macro customUnInstall
  ; Only offer to remove Ariadne if it's actually installed.
  SetRegView 64
  ReadRegStr $R0 HKLM "${ARIADNE_UNINST_KEY}" "UninstallString"
  SetRegView lastused
  StrCmp $R0 "" ariadne_skip_uninstall

  MessageBox MB_YESNO|MB_ICONQUESTION|MB_DEFBUTTON1 \
    "Also uninstall Ariadne's Thread?$\r$\n$\r$\nRemoving it makes Bitcoin Cash names stop resolving in Chrome, Edge, Firefox, and every other browser on this machine. (Theseus's own uninstall does not depend on this — say No to keep the system-wide resolver.)" \
    IDNO ariadne_skip_uninstall
  ExecWait '$R0 /VERYSILENT /SUPPRESSMSGBOXES /NORESTART'

  ariadne_skip_uninstall:
!macroend