update windows installer

package.json

@@ -118,6 +118,9 @@
       "icon": "resources/icon.ico"
     },
     "nsis": {
+      "oneClick": false,
+      "perMachine": true,
+      "allowToChangeInstallationDirectory": true,
       "include": "resources/installer/windows-vst3.nsh"
     },
     "linux": {

resources/installer/windows-vst3.nsh

@@ -1,20 +1,67 @@
 ; Custom NSIS include for electron-builder.
 ;
-; After the main Prism app install finishes, copy the bundled VST3 plugin
-; bundles out of $INSTDIR\resources\plugins\VST3\ into the system VST3 folder
-; (C:\Program Files\Common Files\VST3\) so DAWs find them. On uninstall, remove
-; them. The main NSIS installer already requested admin elevation (it has to,
-; for Program Files), so writes to CommonFiles64 succeed without a second UAC.
+; Wizard installer (oneClick=false, perMachine=true) with an optional VST3
+; install step. After the directory page, we add a custom page with a checkbox:
+;
+;   [x] Install Prism VST3 plugins (recommended)
+;
+; If checked, customInstall xcopies the bundled .vst3 bundles from
+; $INSTDIR\resources\plugins\VST3\ into $COMMONFILES64\VST3\ — the standard
+; system VST3 folder. The whole installer already runs elevated (perMachine=true
+; → UAC prompt at launch), so writes to Common Files succeed without a second
+; elevation. On uninstall, the bundles are removed unconditionally (harmless if
+; the user opted out at install time).
+
+!include "nsDialogs.nsh"
+!include "LogicLib.nsh"
+
+Var PRISM_VST_CHECKBOX
+Var PRISM_VST_STATE
+
+; Hook called from electron-builder's assistedInstaller.nsh between the directory
+; page and the install-files page. Adds our custom checkbox page.
+!macro customPageAfterChangeDir
+  Page custom prismVstOptionsPage prismVstOptionsPageLeave
+!macroend
+
+Function prismVstOptionsPage
+  !insertmacro MUI_HEADER_TEXT "VST3 Plugins" "Choose whether to install the Prism scope plugins."
+
+  nsDialogs::Create 1018
+  Pop $0
+  ${If} $0 == error
+    Abort
+  ${EndIf}
+
+  ${NSD_CreateCheckBox} 0 0u 100% 12u "Install Prism VST3 plugins (recommended)"
+  Pop $PRISM_VST_CHECKBOX
+  ${NSD_Check} $PRISM_VST_CHECKBOX
+
+  ${NSD_CreateLabel} 0 22u 100% 80u "Installs the seven Prism scope plugins (Spectrum, Oscilloscope, Vectorscope, Spectrogram, VU Meter, Loudness Meter, Waveform) to:$\r$\n$\r$\n    $COMMONFILES64\VST3$\r$\n$\r$\nDAWs (FL Studio, Ableton, Logic, Reaper, etc.) will find them on the next plugin rescan.$\r$\n$\r$\nUncheck to install only the Prism desktop app. You can re-run this installer at any time to add the plugins later."
+  Pop $0
+
+  nsDialogs::Show
+FunctionEnd
+
+Function prismVstOptionsPageLeave
+  ${NSD_GetState} $PRISM_VST_CHECKBOX $PRISM_VST_STATE
+FunctionEnd
 
 !macro customInstall
-  ; Ensure the destination exists; xcopy creates trees but not the leaf root.
-  CreateDirectory "$COMMONFILES64\VST3"
-  ; xcopy /E recurse, /I treat dest as dir, /Y overwrite without prompt.
-  ; The trailing "\*" + "/E" copies each *.vst3 bundle subfolder verbatim.
-  nsExec::ExecToLog 'cmd.exe /c xcopy /E /I /Y "$INSTDIR\resources\plugins\VST3\*" "$COMMONFILES64\VST3\"'
+  ${If} $PRISM_VST_STATE == ${BST_CHECKED}
+    DetailPrint "Installing Prism VST3 plugins to $COMMONFILES64\VST3"
+    CreateDirectory "$COMMONFILES64\VST3"
+    ; xcopy /E recurse, /I treat dest as dir, /Y overwrite without prompt.
+    ; The trailing "\*" + "/E" copies each *.vst3 bundle subfolder verbatim.
+    nsExec::ExecToLog 'cmd.exe /c xcopy /E /I /Y "$INSTDIR\resources\plugins\VST3\*" "$COMMONFILES64\VST3\"'
+  ${Else}
+    DetailPrint "Prism VST3 plugins: skipped (opted out)."
+  ${EndIf}
 !macroend
 
 !macro customUnInstall
+  ; Always attempt removal — harmless RMDir if the bundle isn't there (user opted
+  ; out at install or removed manually).
   RMDir /r "$COMMONFILES64\VST3\Prism Spectrum.vst3"
   RMDir /r "$COMMONFILES64\VST3\Prism Oscilloscope.vst3"
   RMDir /r "$COMMONFILES64\VST3\Prism VU Meter.vst3"