add support for directly launching windows exes from file exporer using .desktop shortcut

src/main.js

@@ -7,6 +7,8 @@ const wines = require('./wines')
 const { registerIpc } = require('./ipc')
 const { createMainWindow } = require('./window')
 const { setAppIcon } = require('./appicon')
+const { parseArgv } = require('./argv')
+const openwith = require('./openwith')
 const path = require('path')
 const fs = require('fs')
 
@@ -23,6 +25,7 @@ let tray = null
 let quitting = false
 let headless = false // started via --launch: no window until the user asks
 let autoLaunchId = null // game id from --launch <id>
+let autoOpenPath = null // file path from --open ("Open with PLWL")
 let autoQuitWhenDone = false // headless boot: quit after that game exits
 const getWindow = () => win
 
@@ -50,9 +53,10 @@ if (!gotLock) {
 } else {
   app.on('second-instance', (e, argv) => {
     trace(`second-instance argv=${argv.join(' ')}`)
-    const id = parseLaunchId(argv)
+    const { launchId, openPath } = parseArgv(argv)
     lastHandoffAt = Date.now()
-    if (id) launchGame(id)
+    if (openPath) openWith(openPath)
+    else if (launchId) launchGame(launchId)
     else showMainWindow()
   })
 }
@@ -62,24 +66,20 @@ if (!gotLock) {
 // another game" can never kill the launcher mid-handoff
 let lastHandoffAt = 0
 
-function parseLaunchId(argv) {
-  const args = Array.isArray(argv) ? argv : process.argv
-  const i = args.indexOf('--launch')
-  if (i !== -1) {
-    // Chromium injects its own flags into the second instance's argv and they
-    // can land BETWEEN --launch and the value (e.g. `--launch
-    // --allow-file-access-from-files 1790414564627`), so skip anything that
-    // looks like a flag and take the first non-flag token.
-    for (let j = i + 1; j < args.length; j++) {
-      if (!args[j].startsWith('--')) return args[j]
-    }
-    return null
-  }
-  const eq = args.find(a => a.startsWith('--launch='))
-  return eq ? eq.slice('--launch='.length) : null
+// --- "Open with PLWL" (Exec %f from the file manager) --------------------------
+// Hands the file to the window (renderer shows the wine/prefix picker popup);
+// headless boots open the window for it - a file cannot be launched without
+// the user choosing how.
+async function openWith(filePath) {
+  trace(`openWith ${filePath} serviceReady=${!!gamesService}`)
+  showMainWindow()
+  if (gamesService) gamesService.openExternally(filePath)
+  else openwith.setPending(filePath)
 }
 
-autoLaunchId = parseLaunchId(process.argv)
+const auto = parseArgv(process.argv)
+autoLaunchId = auto.launchId
+autoOpenPath = auto.openPath
 headless = !!autoLaunchId
 autoQuitWhenDone = headless // booting just to run one game -> exit when it ends
 
@@ -241,6 +241,11 @@ app.whenReady().then(async () => {
   } else {
     win = createMainWindow()
     wireWindow(win)
+    // file open handed over while the service was still booting (or queued
+    // by a second instance racing the first boot)
+    if (autoOpenPath || openwith.hasPending()) {
+      openWith(autoOpenPath || openwith.getPending())
+    }
   }
 })