add importing from prefix

src/importer.js

@@ -5,6 +5,7 @@ const path = require('path')
 const { DIRS, resolvePortablePath } = require('./paths')
 const { newGame, newGameId, addGame } = require('./library')
 const { extractIconFromExe } = require('./icons')
+const { prefixPath } = require('./prefixes')
 
 // Directories that typically hold installers/redistributables, not the game.
 const SKIPPED_DIRS = new Set(['redist', 'directx', '_commonredist', 'support', 'dotnet', 'vc'])
@@ -62,6 +63,35 @@ async function importGame(srcDir, mode, onProgress) {
   return addGame(game)
 }
 
+// Import from a wine prefix: the folder is picked under the prefix's
+// drive_c and left in place - the game paths are stored relative to the
+// prefix, so wine sees the app exactly as if it had been installed
+// normally into C:\...
+async function importGameFromPrefix(prefix, srcDir, onProgress) {
+  const prefixes = require('./prefixes')
+  if (!prefixes.listPrefixes().prefixes.some(p => p.name === prefix)) return { ok: false, error: 'prefix-not-found' }
+  // the folder must live inside the prefix's C: drive so the C:\ mapping
+  // holds - drive_c sits at the prefix top for plain wine, under pfx/ for
+  // Proton-managed prefixes
+  const driveRoot = prefixes.prefixDriveRoot(prefix)
+  if (!driveRoot) return { ok: false, error: 'no-drive-c' }
+  const rel = path.relative(driveRoot, srcDir)
+  if (!rel || rel.startsWith('..') || path.isAbsolute(rel)) return { ok: false, error: 'outside-drive-c' }
+  const preExe = await findDefaultExe(srcDir)
+  if (!preExe) return { ok: false, error: 'no-exe-found' }
+  const id = newGameId()
+  const game = newGame({ id, name: path.basename(srcDir), exePath: preExe, workdir: srcDir, mode: 'prefix' })
+  game.importSource = 'prefix'
+  game.prefix = prefix
+  // exe picked automatically -> grab its icon right away; a missing icon is
+  // not an import failure (game can still get one from config)
+  const icon = path.join(DIRS.DATA, 'icons', id, 'icon.ico')
+  if (extractIconFromExe(resolvePortablePath(preExe), icon).ok) {
+    game.iconSource = icon
+  }
+  return addGame(game)
+}
+
 // Largest .exe in the tree, skipping redistributable folders. Files are
 // stat'ed in parallel and folders walked breadth-first so big games don't
 // turn the picker into a sequential crawl.
@@ -103,4 +133,4 @@ async function findDefaultExe(dir) {
   return best
 }
 
-module.exports = { importGame, findDefaultExe, copyRecursive, moveFolder }
+module.exports = { importGame, importGameFromPrefix, findDefaultExe, copyRecursive, moveFolder }