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beammp-gui.py

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+#!/usr/bin/env python3
+# -*- coding: utf-8 -*-
+"""
+BeamMP GUI Setup für BeamNG.drive (Proton)
+- lädt BeamMP-Launcher.exe von GitHub herunter
+- installiert ihn in das BeamNG-Protonprefix (compatdata/284160)
+- trägt BeamMP als Non-Steam-Game in Steam ein (inkl. Proton-CompatToolMapping)
+
+Getestet auf Gentoo, Steam-Layout mit mehreren Bibliotheken (/mnt/Games + ~/.local/share/Steam).
+Benötigt: python3 + PyGObject (Gtk 3). Kein tkinter nötig.
+Start:  ~/scripts/beammp-gui.py   oder   python3 ~/scripts/beammp-gui.py
+"""
+import gi
+gi.require_version("Gtk", "3.0")
+from gi.repository import Gtk, GLib
+import os, re, sys, shutil, struct, binascii, json
+import urllib.request, threading, subprocess, time
+
+BEAMNG_APPID = "284160"
+# Windows-Launcher (funktioniert im Proton-Prefix). Quelle: GitHub Releases.
+BEAMMP_EXE_URL = "https://github.com/BeamMP/BeamMP-Launcher/releases/latest/download/BeamMP-Launcher.exe"
+BEAMMP_FALLBACK_URL = "https://beammp.com/installer/BeamMP_Installer.zip"
+CONFIG_FILE = os.path.expanduser("~/.config/beammp-gui/config.json")
+WRAPPER_NAME = "beammp-launch.sh"
+
+
+# --------------------------------------------------------------------------
+# Steam / BeamNG Erkennung
+# --------------------------------------------------------------------------
+
+def find_steam_root():
+    candidates = [
+        os.path.expanduser("~/.local/share/Steam"),
+        os.path.expanduser("~/.steam/steam"),
+        os.path.expanduser("~/.steam/root"),
+    ]
+    for p in candidates:
+        if os.path.isfile(os.path.join(p, "steamapps", "libraryfolders.vdf")):
+            return p
+        if os.path.isdir(os.path.join(p, "steamapps")):
+            return p
+    return None
+
+
+def parse_libraryfolders(steam_root):
+    """Liest libraryfolders.vdf und gibt Liste von Bibliotheks-Pfaden zurück."""
+    libs = []
+    if steam_root and os.path.isdir(steam_root):
+        libs.append(steam_root)
+    lf = os.path.join(steam_root or "", "steamapps", "libraryfolders.vdf")
+    if os.path.isfile(lf):
+        try:
+            with open(lf, errors="replace") as f:
+                for line in f:
+                    m = re.search(r'"path"\s+"([^"]+)"', line)
+                    if m:
+                        p = m.group(1).replace("\\\\", "/").replace("\\", "/")
+                        # Steam escapt ggf. doppelte Slashes
+                        p = os.path.normpath(p)
+                        if os.path.isdir(p) and p not in libs:
+                            libs.append(p)
+        except Exception:
+            pass
+    # Deduplizieren, existierende zuerst
+    out = []
+    for p in libs:
+        if p not in out:
+            out.append(p)
+    return out
+
+
+def parse_acf_installdir(acf_path):
+    try:
+        with open(acf_path, errors="replace") as f:
+            for line in f:
+                m = re.search(r'"installdir"\s+"([^"]+)"', line)
+                if m:
+                    return m.group(1)
+    except Exception:
+        return None
+    return None
+
+
+def find_beamng():
+    """
+    Gibt dict zurück: {game_dir, library, prefix, compatdata}
+    prefix = .../compatdata/284160/pfx
+    compatdata = .../compatdata/284160
+    """
+    steam = find_steam_root()
+    if not steam:
+        return None
+    libs = parse_libraryfolders(steam)
+    # 1. per appmanifest suchen (korrekte AppID 284160!)
+    for lib in libs:
+        acf = os.path.join(lib, "steamapps", f"appmanifest_{BEAMNG_APPID}.acf")
+        if os.path.isfile(acf):
+            installdir = parse_acf_installdir(acf) or "BeamNG.drive"
+            game_dir = os.path.join(lib, "steamapps", "common", installdir)
+            if os.path.isdir(game_dir):
+                compat = os.path.join(lib, "steamapps", "compatdata", BEAMNG_APPID)
+                prefix = os.path.join(compat, "pfx")
+                return {"game_dir": game_dir, "library": lib,
+                        "compatdata": compat, "prefix": prefix, "steam": steam}
+    # 2. Fallback: common/BeamNG.drive Verzeichnis-Scan
+    for lib in libs:
+        gd = os.path.join(lib, "steamapps", "common", "BeamNG.drive")
+        if os.path.isdir(gd) and os.path.isfile(os.path.join(gd, "BeamNG.drive.exe")):
+            compat = os.path.join(lib, "steamapps", "compatdata", BEAMNG_APPID)
+            return {"game_dir": gd, "library": lib,
+                    "compatdata": compat, "prefix": os.path.join(compat, "pfx"),
+                    "steam": steam}
+    return None
+
+
+def find_proton_versions():
+    """Liste von (name, proton_binary, tool_dir)."""
+    steam = find_steam_root()
+    if not steam:
+        return []
+    libs = parse_libraryfolders(steam)
+    search_bases = []
+    for lib in libs:
+        search_bases.append(os.path.join(lib, "steamapps", "common"))
+        search_bases.append(os.path.join(lib, "compatibilitytools.d"))
+    # zusätzlich user-weite tools
+    search_bases.append(os.path.expanduser("~/.local/share/Steam/compatibilitytools.d"))
+    search_bases.append(os.path.join(steam, "compatibilitytools.d"))
+    found = {}
+    for base in search_bases:
+        if not os.path.isdir(base):
+            continue
+        try:
+            for name in sorted(os.listdir(base)):
+                low = name.lower()
+                if "proton" not in low and "ge-" not in low and "wine" not in low:
+                    continue
+                tool_dir = os.path.join(base, name)
+                proton_bin = os.path.join(tool_dir, "proton")
+                if os.path.isfile(proton_bin) and name not in found:
+                    found[name] = (proton_bin, tool_dir)
+        except Exception:
+            continue
+    return [(n, pb, td) for n, (pb, td) in sorted(found.items())]
+
+
+def proton_to_compat_name(folder_name):
+    low = folder_name.lower()
+    if "experimental" in low:
+        return "proton_experimental"
+    m = re.search(r"proton\s*0*(\d+)", low)
+    if m:
+        return f"proton_{m.group(1)}"
+    if "ge-proton" in low:
+        # GE-Proton: Steam nutzt internen Namen, Ordnername funktioniert meist nicht.
+        # Fallback auf proton_9 + Hinweis; Mapping wird trotzdem gesetzt.
+        mm = re.search(r"(\d+)", low)
+        if mm:
+            return f"proton_{mm.group(1)}"
+        return "proton_9"
+    if "hotfix" in low:
+        return "proton_hotfix"
+    return "proton_9"
+
+
+def steam_running():
+    # steam.pid existiert + Prozess läuft, oder pgrep steam
+    for cmd in (["pgrep", "-x", "steam"], ["pgrep", "-x", "steamwebhelper"]):
+        try:
+            r = subprocess.run(cmd, capture_output=True, timeout=5)
+            if r.returncode == 0 and r.stdout.strip():
+                return True
+        except Exception:
+            pass
+    return False
+
+
+# --------------------------------------------------------------------------
+# shortcuts.vdf (binär) lesen/schreiben – typ-erhaltend!
+# Typen: 0x00 = Objekt, 0x01 = String, 0x02 = int32, 0x08 = Ende
+# --------------------------------------------------------------------------
+
+def _read_cstr(data, pos):
+    end = data.index(b"\x00", pos)
+    s = data[pos:end].decode("utf-8", errors="replace")
+    return s, end + 1
+
+
+def _parse_obj(data, pos):
+    """Parst Objekt-Inhalt ab pos, gibt (dict, neue_pos) zurück. End-Byte 0x08 wird konsumiert."""
+    obj = {}
+    order = []  # Key-Reihenfolge + Typ merken
+    n = len(data)
+    while pos < n:
+        t = data[pos]
+        pos += 1
+        if t == 0x08:
+            break
+        key, pos = _read_cstr(data, pos)
+        if t == 0x01:
+            val, pos = _read_cstr(data, pos)
+            obj[key] = val
+            order.append((key, 0x01))
+        elif t == 0x02:
+            val = struct.unpack_from("<i", data, pos)[0]
+            pos += 4
+            obj[key] = val
+            order.append((key, 0x02))
+        elif t == 0x00:
+            val, pos = _parse_obj(data, pos)
+            obj[key] = val
+            order.append((key, 0x00))
+        else:
+            raise ValueError(f"Unbekannter VDF-Typ {t:#x} bei Key {key!r}")
+    obj["_order"] = order
+    return obj, pos
+
+
+def read_shortcuts_vdf(path):
+    """Gibt (top_dict, order_list) zurück. top_dict: {'0': {...}, '1': {...}}"""
+    with open(path, "rb") as f:
+        data = f.read()
+    if not data:
+        return {}, []
+    pos = 0
+    if data[pos] != 0x00:
+        raise ValueError("Kein gültiges shortcuts.vdf (erwartet 0x00 am Anfang)")
+    pos += 1
+    root_key, pos = _read_cstr(data, pos)  # "shortcuts"
+    top, pos = _parse_obj(data, pos)
+    order = top.pop("_order", [])
+    for v in top.values():
+        if isinstance(v, dict):
+            v.pop("_order", None)
+    keys = [k for k, _ in order]
+    return top, keys
+
+
+def _write_cstr(f, s):
+    f.write(s.encode("utf-8", errors="replace") + b"\x00")
+
+
+def _write_obj(f, obj, order=None):
+    items = order if order else [(k, None) for k in obj.keys() if not k.startswith("_")]
+    seen = set()
+    for key, forced_t in items:
+        if key.startswith("_") or key not in obj:
+            continue
+        seen.add(key)
+        val = obj[key]
+        if isinstance(val, dict):
+            f.write(b"\x00")
+            _write_cstr(f, key)
+            sub_order = val.get("_order")
+            _write_obj(f, {k: v for k, v in val.items() if not k.startswith("_")}, sub_order)
+        elif isinstance(val, int) and not isinstance(val, bool):
+            f.write(b"\x02")
+            _write_cstr(f, key)
+            f.write(struct.pack("<i", val))
+        else:
+            f.write(b"\x01")
+            _write_cstr(f, key)
+            _write_cstr(f, str(val))
+    for key, val in obj.items():
+        if key.startswith("_") or key in seen:
+            continue
+        if isinstance(val, dict):
+            f.write(b"\x00")
+            _write_cstr(f, key)
+            _write_obj(f, {k: v for k, v in val.items() if not k.startswith("_")}, val.get("_order"))
+        elif isinstance(val, int) and not isinstance(val, bool):
+            f.write(b"\x02")
+            _write_cstr(f, key)
+            f.write(struct.pack("<i", val))
+        else:
+            f.write(b"\x01")
+            _write_cstr(f, key)
+            _write_cstr(f, str(val))
+    f.write(b"\x08")
+
+
+def write_shortcuts_vdf(path, top, keys):
+    tmp = path + ".tmp"
+    with open(tmp, "wb") as f:
+        f.write(b"\x00")
+        _write_cstr(f, "shortcuts")
+        # Einträge in numerischer Reihenfolge
+        for i, k in enumerate(keys):
+            entry = top[k]
+            f.write(b"\x00")
+            _write_cstr(f, str(i))
+            _write_obj(f, entry)
+        f.write(b"\x08\x08")  # Objekt-Ende + Root-Terminator (wie Steam selbst)
+    os.replace(tmp, path)
+
+
+def steam_shortcut_appid(exe, appname):
+    """Standard Steam-Algorithmus: crc32(exe + appname) | 0x80000000 als signed int32."""
+    crc = binascii.crc32((exe + appname).encode("utf-8")) & 0xFFFFFFFF
+    crc |= 0x80000000
+    return struct.unpack("<i", struct.pack("<I", crc))[0]
+
+
+def ensure_compat_mapping(config_vdf_path, unsigned_id, tool_name, priority="250"):
+    """Trägt Proton-Mapping in config.vdf ein (Text-VDF). Backup wird erstellt."""
+    with open(config_vdf_path, errors="replace") as f:
+        text = f.read()
+    key = str(unsigned_id)
+    # Bereits vorhanden? Dann Namen ersetzen.
+    pat = re.compile(r'"' + re.escape(key) + r'"\s*\{\s*"name"\s*"[^"]*"\s*"config"\s*"[^"]*"\s*"priority"\s*"[^"]*"\s*\}', re.DOTALL)
+    block = (f'\t\t\t\t\t"{key}"\n\t\t\t\t\t{{\n'
+             f'\t\t\t\t\t\t"name"\t\t"{tool_name}"\n'
+             f'\t\t\t\t\t\t"config"\t\t""\n'
+             f'\t\t\t\t\t\t"priority"\t\t"{priority}"\n\t\t\t\t\t}}')
+    if pat.search(text):
+        text = pat.sub(block, text)
+    else:
+        # Vor der schließenden Klammer von "CompatToolMapping" einfügen:
+        # Suche den Block und füge vor dem letzten "}," auf derselben Ebene ein.
+        m = re.search(r'"CompatToolMapping"\s*\n\s*\{', text)
+        if not m:
+            raise ValueError("CompatToolMapping-Block in config.vdf nicht gefunden")
+        # Finde zugehörige schließende Klammer per Klammerzähler ab m.end()
+        depth = 1
+        i = m.end()
+        in_str = False
+        esc = False
+        while i < len(text) and depth > 0:
+            c = text[i]
+            if in_str:
+                if esc:
+                    esc = False
+                elif c == "\\":
+                    esc = True
+                elif c == '"':
+                    in_str = False
+            else:
+                if c == '"':
+                    in_str = True
+                elif c == "{":
+                    depth += 1
+                elif c == "}":
+                    depth -= 1
+                    if depth == 0:
+                        break
+            i += 1
+        if depth != 0:
+            raise ValueError("config.vdf Klammern unausgeglichen")
+        text = text[:i] + "\n" + block + "\n\t\t\t\t" + text[i:]
+    backup = config_vdf_path + ".beammp-gui.bak"
+    shutil.copy2(config_vdf_path, backup)
+    with open(config_vdf_path, "w") as f:
+        f.write(text)
+    return backup
+
+
+def remove_compat_mapping(config_vdf_path, unsigned_id):
+    """Entfernt Proton-Mapping wieder (Wrapper läuft nativ). Gibt True zurück wenn etwas entfernt wurde."""
+    with open(config_vdf_path, errors="replace") as f:
+        text = f.read()
+    key = str(unsigned_id)
+    pat = re.compile(r'\s*"' + re.escape(key) + r'"\s*\{\s*"name"\s*"[^"]*"\s*"config"\s*"[^"]*"\s*"priority"\s*"[^"]*"\s*\}', re.DOTALL)
+    if not pat.search(text):
+        return False
+    text = pat.sub("", text, count=1)
+    backup = config_vdf_path + ".beammp-gui.bak"
+    shutil.copy2(config_vdf_path, backup)
+    with open(config_vdf_path, "w") as f:
+        f.write(text)
+    return True
+
+
+# --------------------------------------------------------------------------
+# Download / Installation
+# --------------------------------------------------------------------------
+
+def download_file(url, dest, log, progress_cb=None):
+    req = urllib.request.Request(url, headers={"User-Agent": "beammp-gui/1.0"})
+    with urllib.request.urlopen(req, timeout=120) as resp:
+        total = int(resp.headers.get("Content-Length") or 0)
+        got = 0
+        chunk = 1024 * 256
+        with open(dest, "wb") as f:
+            while True:
+                buf = resp.read(chunk)
+                if not buf:
+                    break
+                f.write(buf)
+                got += len(buf)
+                if progress_cb:
+                    GLib.idle_add(progress_cb, got, total)
+    return dest
+
+
+def official_launcher_dest(prefix):
+    """Offizieller Ablageort im Prefix (wie Windows %AppData%)."""
+    return os.path.join(prefix, "drive_c", "users", "steamuser",
+                        "AppData", "Roaming", "BeamMP-Launcher", "BeamMP-Launcher.exe")
+
+
+# --------------------------------------------------------------------------
+# GUI
+# --------------------------------------------------------------------------
+
+class MainWindow(Gtk.ApplicationWindow):
+    def __init__(self, app):
+        super().__init__(application=app, title="BeamMP für BeamNG (Proton) – Setup")
+        self.set_default_size(760, 660)
+        self.set_border_width(10)
+        self.config = self._load_config()
+        self.beamng = None
+        self._build_ui()
+        GLib.idle_add(self.refresh)
+
+    # -- config --
+    def _load_config(self):
+        try:
+            if os.path.isfile(CONFIG_FILE):
+                with open(CONFIG_FILE) as f:
+                    return json.load(f)
+        except Exception:
+            pass
+        return {}
+
+    def _save_config(self):
+        try:
+            self.config.update({
+                "launcher_path": self.ent_launcher.get_text(),
+                "steam_name": self.ent_name.get_text(),
+                "proton": self.cmb_proton.get_active_text() or "",
+            })
+            os.makedirs(os.path.dirname(CONFIG_FILE), exist_ok=True)
+            with open(CONFIG_FILE, "w") as f:
+                json.dump(self.config, f, indent=2)
+        except Exception:
+            pass
+
+    # -- UI --
+    def _build_ui(self):
+        vbox = Gtk.Box(orientation=Gtk.Orientation.VERTICAL, spacing=8)
+        self.add(vbox)
+
+        # Status
+        fr = Gtk.Frame(label=" Erkennung ")
+        vbox.pack_start(fr, False, False, 0)
+        sb = Gtk.Box(orientation=Gtk.Orientation.VERTICAL, spacing=2)
+        sb.set_border_width(6)
+        fr.add(sb)
+        self.lbl_steam = Gtk.Label(xalign=0, selectable=True)
+        self.lbl_beamng = Gtk.Label(xalign=0, selectable=True)
+        self.lbl_prefix = Gtk.Label(xalign=0, selectable=True)
+        self.lbl_proton = Gtk.Label(xalign=0, selectable=True)
+        for lab in (self.lbl_steam, self.lbl_beamng, self.lbl_prefix, self.lbl_proton):
+            lab.set_line_wrap(True)
+            sb.pack_start(lab, False, False, 1)
+
+        # Einstellungen
+        fr2 = Gtk.Frame(label=" Einstellungen ")
+        vbox.pack_start(fr2, False, False, 0)
+        grid = Gtk.Grid(column_spacing=8, row_spacing=6)
+        grid.set_border_width(8)
+        fr2.add(grid)
+
+        grid.attach(Gtk.Label(label="BeamMP-Launcher (.exe):", xalign=0), 0, 0, 1, 1)
+        self.ent_launcher = Gtk.Entry(hexpand=True)
+        self.ent_launcher.set_text(self.config.get("launcher_path",
+                                   os.path.expanduser("~/Downloads/BeamMP-Launcher.exe")))
+        self.ent_launcher.set_tooltip_text("Pfad zur heruntergeladenen BeamMP-Launcher.exe")
+        grid.attach(self.ent_launcher, 1, 0, 1, 1)
+        hb = Gtk.Box(spacing=4)
+        b_dl = Gtk.Button(label="Herunterladen")
+        b_dl.connect("clicked", self.on_download)
+        b_br = Gtk.Button(label="...")
+        b_br.set_size_request(36, -1)
+        b_br.connect("clicked", self.on_browse_exe)
+        hb.pack_start(b_dl, False, False, 0)
+        hb.pack_start(b_br, False, False, 0)
+        grid.attach(hb, 2, 0, 1, 1)
+
+        grid.attach(Gtk.Label(label="Proton-Version:", xalign=0), 0, 1, 1, 1)
+        self.cmb_proton = Gtk.ComboBoxText(hexpand=True)
+        grid.attach(self.cmb_proton, 1, 1, 1, 1)
+        b_rf = Gtk.Button(label="Aktualisieren")
+        b_rf.connect("clicked", lambda *_: self.refresh())
+        grid.attach(b_rf, 2, 1, 1, 1)
+
+        grid.attach(Gtk.Label(label="Name in Steam:", xalign=0), 0, 2, 1, 1)
+        self.ent_name = Gtk.Entry(hexpand=True)
+        self.ent_name.set_text(self.config.get("steam_name", "BeamMP"))
+        grid.attach(self.ent_name, 1, 2, 2, 1)
+
+        self.progress = Gtk.ProgressBar(show_text=True)
+        self.progress.set_text("bereit")
+        grid.attach(self.progress, 0, 3, 3, 1)
+
+        # Aktionen
+        fr3 = Gtk.Frame(label=" Aktionen (Reihenfolge einhalten) ")
+        vbox.pack_start(fr3, False, False, 0)
+        hbox = Gtk.Box(spacing=6)
+        hbox.set_border_width(8)
+        fr3.add(hbox)
+        b1 = Gtk.Button(label="1. Im Prefix installieren")
+        b1.get_style_context().add_class("suggested-action")
+        b1.connect("clicked", self.on_install)
+        b2 = Gtk.Button(label="2. Zu Steam hinzufügen")
+        b2.get_style_context().add_class("suggested-action")
+        b2.connect("clicked", self.on_add_steam)
+        b_all = Gtk.Button(label="Alles nacheinander")
+        b_all.connect("clicked", self.on_all)
+        for b in (b1, b2, b_all):
+            hbox.pack_start(b, True, True, 0)
+
+        # Log
+        fr4 = Gtk.Frame(label=" Log ")
+        vbox.pack_start(fr4, True, True, 0)
+        sw = Gtk.ScrolledWindow()
+        sw.set_min_content_height(220)
+        fr4.add(sw)
+        self.log_buf = Gtk.TextBuffer()
+        self.log_view = Gtk.TextView(buffer=self.log_buf)
+        self.log_view.set_editable(False)
+        self.log_view.set_monospace(True)
+        self.log_view.set_wrap_mode(Gtk.WrapMode.WORD_CHAR)
+        sw.add(self.log_view)
+        self.show_all()
+
+    # -- helpers --
+    def log(self, msg):
+        def do():
+            it = self.log_buf.get_end_iter()
+            self.log_buf.insert(it, f"[{time.strftime('%H:%M:%S')}] {msg}\n")
+            mark = self.log_buf.create_mark(None, self.log_buf.get_end_iter(), False)
+            self.log_view.scroll_mark_onscreen(mark)
+        GLib.idle_add(do)
+        print(msg, flush=True)
+
+    def refresh(self):
+        steam = find_steam_root()
+        if steam:
+            self.lbl_steam.set_markup(f'<b>Steam:</b> <span fgcolor="green">OK</span>  {GLib.markup_escape_text(steam)}')
+        else:
+            self.lbl_steam.set_markup('<b>Steam:</b> <span fgcolor="red">nicht gefunden</span>')
+
+        self.beamng = find_beamng()
+        if self.beamng:
+            self.lbl_beamng.set_markup(f'<b>BeamNG:</b> <span fgcolor="green">OK</span>  {GLib.markup_escape_text(self.beamng["game_dir"])}')
+            pfx = self.beamng["prefix"]
+            if os.path.isdir(os.path.join(pfx, "drive_c")):
+                self.lbl_prefix.set_markup(f'<b>Prefix (284160):</b> <span fgcolor="green">OK</span>  {GLib.markup_escape_text(pfx)}')
+            else:
+                self.lbl_prefix.set_markup(f'<b>Prefix (284160):</b> <span fgcolor="orange">noch nicht von Steam erstellt – bitte BeamNG einmal starten</span>  {GLib.markup_escape_text(pfx)}')
+        else:
+            self.lbl_beamng.set_markup('<b>BeamNG:</b> <span fgcolor="red">nicht gefunden (AppID 284160 – bitte in Steam installieren)</span>')
+            self.lbl_prefix.set_markup('<b>Prefix:</b> <span fgcolor="red">–</span>')
+
+        pvs = find_proton_versions()
+        self.cmb_proton.remove_all()
+        if pvs:
+            self.lbl_proton.set_markup(f'<b>Proton:</b> <span fgcolor="green">{len(pvs)} gefunden</span>')
+            for name, _pb, _td in pvs:
+                self.cmb_proton.append_text(name)
+            saved = self.config.get("proton", "")
+            names = [n for n, _, _ in pvs]
+            self.cmb_proton.set_active(names.index(saved) if saved in names else 0)
+        else:
+            self.lbl_proton.set_markup('<b>Proton:</b> <span fgcolor="red">keins gefunden – bitte z.B. Proton 9 in Steam installieren</span>')
+
+    def _selected_proton(self):
+        name = self.cmb_proton.get_active_text()
+        if not name:
+            return None
+        for n, pb, td in find_proton_versions():
+            if n == name:
+                return (n, pb, td)
+        return None
+
+    # -- Aktionen --
+    def on_browse_exe(self, _):
+        dlg = Gtk.FileChooserDialog(title="BeamMP-Launcher.exe wählen",
+                                    action=Gtk.FileChooserAction.OPEN)
+        dlg.add_button(Gtk.STOCK_CANCEL, Gtk.ResponseType.CANCEL)
+        dlg.add_button(Gtk.STOCK_OPEN, Gtk.ResponseType.OK)
+        flt = Gtk.FileFilter()
+        flt.set_name("Windows-Executables")
+        flt.add_pattern("*.exe")
+        dlg.add_filter(flt)
+        if dlg.run() == Gtk.ResponseType.OK:
+            self.ent_launcher.set_text(dlg.get_filename())
+        dlg.destroy()
+
+    def on_download(self, _):
+        dest = self.ent_launcher.get_text().strip() or os.path.expanduser("~/Downloads/BeamMP-Launcher.exe")
+        if os.path.isdir(dest):
+            dest = os.path.join(dest, "BeamMP-Launcher.exe")
+        os.makedirs(os.path.dirname(dest) or ".", exist_ok=True)
+        self.ent_launcher.set_text(dest)
+        self._save_config()
+        self.log(f"Download von {BEAMMP_EXE_URL} nach {dest} …")
+
+        def work():
+            try:
+                def prog(got, total):
+                    if total:
+                        self.progress.set_fraction(min(got / total, 1.0))
+                        self.progress.set_text(f"{got//1024//1024} / {total//1024//1024} MB")
+                    return False
+                try:
+                    download_file(BEAMMP_EXE_URL, dest, self.log, prog)
+                except Exception as e1:
+                    self.log(f"Primär-URL fehlgeschlagen ({e1}), versuche Fallback …")
+                    download_file(BEAMMP_FALLBACK_URL, dest + ".zip", self.log, prog)
+                    self.log(f"Fallback-ZIP gespeichert. Bitte BeamMP-Launcher.exe daraus entpacken. ({dest}.zip)")
+                    return
+                size = os.path.getsize(dest)
+                if size < 1_000_000:
+                    # evtl. HTML-Fehlerseite
+                    with open(dest, "rb") as f:
+                        head = f.read(200)
+                    if b"<html" in head.lower():
+                        raise ValueError("Server lieferte HTML statt .exe (Release evtl. umbenannt – siehe Log)")
+                self.log(f"Fertig: {size} Bytes → {dest}")
+                GLib.idle_add(self.progress.set_fraction, 1.0)
+                GLib.idle_add(self.progress.set_text, "Download fertig")
+            except Exception as e:
+                self.log(f"FEHLER beim Download: {e}")
+                self.log("Manuell laden: https://github.com/BeamMP/BeamMP-Launcher/releases/latest")
+                GLib.idle_add(self.progress.set_text, "Download fehlgeschlagen")
+        threading.Thread(target=work, daemon=True).start()
+
+    def on_install(self, _):
+        self._save_config()
+        if not self.beamng:
+            self.log("FEHLER: BeamNG.drive nicht gefunden – erst in Steam installieren.")
+            return
+        launcher = self.ent_launcher.get_text().strip()
+        if not launcher or not os.path.isfile(launcher):
+            self.log(f"FEHLER: Launcher nicht gefunden: {launcher} – erst herunterladen.")
+            return
+        sel = self._selected_proton()
+        if not sel:
+            self.log("FEHLER: keine Proton-Version gewählt.")
+            return
+        proton_name, proton_bin, _tool = sel
+        game_dir = self.beamng["game_dir"]
+        compat = self.beamng["compatdata"]
+        prefix = self.beamng["prefix"]
+        steam = self.beamng["steam"]
+        self.log(f"Installiere mit {proton_name} in Prefix {prefix} …")
+        threading.Thread(target=self._install_work, daemon=True,
+                         args=(launcher, game_dir, compat, prefix, steam, proton_bin, proton_name)).start()
+
+    def _install_work(self, launcher, game_dir, compat, prefix, steam, proton_bin, proton_name):
+        try:
+            if not os.path.isdir(os.path.join(prefix, "drive_c")):
+                self.log("Prefix existiert noch nicht – bitte BeamNG.drive einmal über Steam starten, dann erneut versuchen.")
+                self.log(f"Erwartet: {prefix}/drive_c")
+                return
+            target = official_launcher_dest(prefix)
+            os.makedirs(os.path.dirname(target), exist_ok=True)
+            shutil.copy2(launcher, target)
+            self.log(f"Launcher kopiert nach: {target}")
+            # Zweite Kopie für leichten Zugriff
+            alt = os.path.join(prefix, "drive_c", "BeamMP", "BeamMP-Launcher.exe")
+            os.makedirs(os.path.dirname(alt), exist_ok=True)
+            if os.path.abspath(alt) != os.path.abspath(target):
+                shutil.copy2(launcher, alt)
+                self.log(f"Kopie nach: {alt}")
+
+            # Einmalig via Proton starten, damit BeamMP Mod/Config angelegt werden.
+            env = os.environ.copy()
+            env["STEAM_COMPAT_DATA_PATH"] = compat
+            env["STEAM_COMPAT_CLIENT_INSTALL_PATH"] = steam
+            env["STEAM_COMPAT_INSTALL_PATH"] = game_dir
+            self.log("Starte Launcher einmalig via Proton (Fenster bestätigen, dann schließen) …")
+            self.log(f"  STEAM_COMPAT_DATA_PATH={compat}")
+            proc = subprocess.Popen([proton_bin, "run", target], env=env, cwd=game_dir,
+                                    stdout=subprocess.PIPE, stderr=subprocess.STDOUT, text=True)
+            self.log(f"Proton läuft (PID {proc.pid}) – bitte Installation im Fenster abschließen.")
+            try:
+                out, _ = proc.communicate(timeout=300)
+                self.log(f"Proton beendet (Code {proc.returncode}).")
+                if out:
+                    self.log("Proton-Log (Auszug): " + out.strip().replace(chr(10), " | ")[:800])
+            except subprocess.TimeoutExpired:
+                self.log("Launcher läuft noch (Timeout 5 min) – Fenster manuell schließen, dann fortfahren.")
+            self.log("Schritt 1 fertig → jetzt Schritt 2 (Zu Steam hinzufügen).")
+        except Exception as e:
+            self.log(f"FEHLER bei Installation: {e}")
+
+    def on_add_steam(self, _):
+        self._save_config()
+        if not self.beamng:
+            self.log("FEHLER: BeamNG nicht gefunden.")
+            return
+        sel = self._selected_proton()
+        if not sel:
+            self.log("FEHLER: keine Proton-Version gewählt.")
+            return
+        proton_name, _pb, _td = sel
+        compat_name = proton_to_compat_name(proton_name)
+        name = self.ent_name.get_text().strip() or "BeamMP"
+        prefix = self.beamng["prefix"]
+        game_dir = self.beamng["game_dir"]
+        steam = self.beamng["steam"]
+        target = official_launcher_dest(prefix)
+        if not os.path.isfile(target):
+            # Fallback auf eingetragenen Pfad
+            launcher = self.ent_launcher.get_text().strip()
+            if launcher and os.path.isfile(launcher):
+                self.log("Launcher noch nicht im Prefix – kopiere jetzt …")
+                os.makedirs(os.path.dirname(target), exist_ok=True)
+                shutil.copy2(launcher, target)
+            else:
+                self.log(f"FEHLER: {target} fehlt – erst Schritt 1 ausführen.")
+                return
+        if steam_running():
+            self.log("WARNUNG: Steam läuft! Bitte Steam vollständig beenden (Steam → Beenden), sonst wird shortcuts.vdf überschrieben.")
+        proton_bin = sel[1]
+        threading.Thread(target=self._steam_work, daemon=True,
+                         args=(name, target, game_dir, steam, compat_name, proton_name, proton_bin)).start()
+
+    def _steam_work(self, name, exe_linux, startdir, steam, compat_name, proton_name, proton_bin):
+        try:
+            compatdata = self.beamng["compatdata"]
+            game_dir = self.beamng["game_dir"]
+            # Der Launcher braucht BeamNG.drive.ini im 284160-Prefix (installPath).
+            ini = os.path.join(self.beamng["prefix"], "drive_c", "users",
+                               "steamuser", "AppData", "Local", "BeamNG", "BeamNG.drive.ini")
+            if not os.path.isfile(ini):
+                self.log("HINWEIS: BeamNG.drive.ini fehlt im Prefix – bitte BeamNG einmal normal über Steam starten, dann erneut versuchen.")
+            # Wrapper erzwingt das BeamNG-Prefix (284160). Direkt-Exe bekäme sonst
+            # ein eigenes frisches Prefix ohne ini -> Launcher-Fehler Code 7.
+            wrapper = os.path.join(os.path.expanduser("~/scripts"), WRAPPER_NAME)
+            with open(wrapper, "w") as f:
+                f.write("#!/bin/bash\n")
+                f.write("# BeamMP im BeamNG-Protonprefix (284160) starten. Wird vom GUI-Skript erzeugt.\n")
+                f.write("# Steam-Shortcut zeigt auf DIESE Datei (nativ, KEIN Proton-Compat erzwingen).\n")
+                f.write(f'export STEAM_COMPAT_DATA_PATH="{compatdata}"\n')
+                f.write(f'export STEAM_COMPAT_CLIENT_INSTALL_PATH="{steam}"\n')
+                f.write(f'export STEAM_COMPAT_INSTALL_PATH="{game_dir}"\n')
+                f.write(f'cd "{game_dir}"\n')
+                f.write(f'exec "{proton_bin}" run "{exe_linux}"\n')
+            os.chmod(wrapper, 0o755)
+            self.log(f"Wrapper-Skript: {wrapper}")
+
+            appid = steam_shortcut_appid(wrapper, name)
+            unsigned = appid & 0xFFFFFFFF
+            # Alte AppID (direkte Exe) zum Aufräumen des stale Compat-Mappings
+            old_appid = steam_shortcut_appid(exe_linux, name)
+            old_unsigned = old_appid & 0xFFFFFFFF
+            self.log(f"Shortcut-AppID: {appid} (unsigned {unsigned})")
+
+            for uid in sorted(os.listdir(os.path.join(steam, "userdata"))):
+                cfg = os.path.join(steam, "userdata", uid, "config")
+                if not os.path.isdir(cfg):
+                    continue
+                vdf = os.path.join(cfg, "shortcuts.vdf")
+                if os.path.isfile(vdf):
+                    shutil.copy2(vdf, vdf + ".beammp-gui.bak")
+                try:
+                    top, keys = read_shortcuts_vdf(vdf) if os.path.isfile(vdf) else ({}, [])
+                except Exception as e:
+                    self.log(f"{vdf} konnte nicht gelesen werden ({e}) – lege neu an.")
+                    top, keys = {}, []
+                # Duplikat? (gleicher Name, alte direkte Exe oder Wrapper)
+                dup_key = None
+                for k, entry in top.items():
+                    if entry.get("AppName") == name or entry.get("Exe") in (exe_linux, wrapper):
+                        dup_key = k
+                        break
+                entry = {
+                    "appid": appid,
+                    "AppName": name,
+                    "Exe": wrapper,
+                    "StartDir": startdir,
+                    "icon": "",
+                    "ShortcutPath": "",
+                    "LaunchOptions": "",
+                    "IsHidden": 0,
+                    "AllowDesktopConfig": 1,
+                    "AllowOverlay": 1,
+                    "OpenVR": 0,
+                    "Devkit": 0,
+                    "DevkitGameID": "",
+                    "DevkitOverrideAppID": 0,
+                    "LastPlayTime": int(time.time()),
+                    "FlatpakAppID": "",
+                    "tags": {},
+                }
+                if dup_key is not None:
+                    # Felder aktualisieren, LastPlayTime behalten falls neuer=0
+                    old = top[dup_key]
+                    old.update(entry)
+                    old["appid"] = appid
+                    self.log(f"Eintrag '{name}' aktualisiert (User {uid}).")
+                else:
+                    new_index = str(max([int(k) for k in top.keys()] + [-1]) + 1)
+                    top[new_index] = entry
+                    keys = sorted(top.keys(), key=int)
+                    self.log(f"Eintrag '{name}' neu erstellt (User {uid}, Index {new_index}).")
+                write_shortcuts_vdf(vdf, top, keys)
+                self.log(f"shortcuts.vdf geschrieben: {vdf}")
+
+                # Wrapper läuft NATIV (ruft selbst proton auf) -> KEIN Proton-Compat
+                # für den Shortcut erzwingen, sonst läuft der Wrapper doppelt unter Proton.
+                # Altes Mapping der direkten Exe ebenfalls entfernen.
+                config_vdf = os.path.join(steam, "config", "config.vdf")
+                if os.path.isfile(config_vdf):
+                    try:
+                        for uid_num in {unsigned, old_unsigned}:
+                            if remove_compat_mapping(config_vdf, uid_num):
+                                self.log(f"CompatToolMapping für {uid_num} entfernt (nativer Wrapper).")
+                        self.log("Wichtig: In Steam bei BeamMP unter Eigenschaften → Kompatibilität "
+                                 "KEIN Häkchen setzen (nativ über Wrapper).")
+                    except Exception as e:
+                        self.log(f"Hinweis: CompatMapping-Aufräumen fehlgeschlagen ({e}).")
+                else:
+                    self.log(f"Hinweis: {config_vdf} nicht gefunden.")
+            self.log("Fertig! Steam neu starten – BeamMP erscheint in der Bibliothek.")
+            self.log("Tipp: Falls Launcher Code 7 meldet, BeamNG einmal normal starten (erzeugt BeamNG.drive.ini).")
+        except Exception as e:
+            import traceback
+            self.log(f"FEHLER beim Steam-Eintrag: {e}")
+            self.log(traceback.format_exc(limit=3).replace(chr(10), " | "))
+
+    def on_all(self, _):
+        self.log("Führe Schritt 1 aus, Schritt 2 bitte nach Abschluss von 1 klicken.")
+        self.on_install(_)
+
+
+class App(Gtk.Application):
+    def __init__(self):
+        super().__init__(application_id="com.beammp.gui")
+        self.win = None
+
+    def do_activate(self):
+        if not self.win:
+            self.win = MainWindow(self)
+        self.win.show_all()
+        self.win.present()
+
+
+def main():
+    if "--detect" in sys.argv:
+        # Headless-Diagnose für Tests
+        print("steam:", find_steam_root())
+        print("libs:", parse_libraryfolders(find_steam_root() or ""))
+        print("beamng:", find_beamng())
+        print("proton:", [(n, pb) for n, pb, _ in find_proton_versions()])
+        return
+    app = App()
+    app.run()
+
+
+if __name__ == "__main__":
+    main()