# -*- coding: utf-8 -*-
"""
AzA Desktop-Hülle
=================

Saubere, professionelle Hauptoberfläche für AzA Office.

Diese Hülle ersetzt die alte, chaotische Toolbar von ``KGDesktopApp``
(``basis14.py``) durch eine ruhige, medizinisch-saubere Layout-Schicht
im Stil der Empfang-Oberfläche.

Was die Hülle macht
-------------------

* Versteckt die alte obere Button-Leiste (``top``-Frame mit dem
  Mix aus 👤/🔑/⊞/↺/Token-Anzeige/Slider/Status-Pills usw.).
* Versteckt das doppelte Logo unten links (``_logo_frame``).
* Versteckt den "Ablauf:"-Text unten (``_bottom_frame``).
* Versteckt die alte Addon-/Modul-Spalte mit "An Empfang senden"
  – dieser Button wird stattdessen prominent im neuen Header platziert.
* Baut eine neue klare Kopfzeile mit Logo + "AzA von Arzt zu Arzt" +
  "Informatik zu fairen Preisen" (oben links).
* Baut eine neue Aktionsleiste mit einheitlichen Pill-Buttons:
  Aufnahme, Korrigieren, Audio importieren, Diktat, Notizen, Neu,
  An Empfang senden, Profil, Status, Hell/Dunkel, A−/A+, Transkript.
* Bindet die zustandsbehafteten Knöpfe (Start/Stopp-Texte) so um,
  dass die bestehende Aufnahme-Logik (``toggle_record`` etc.) ohne
  Änderung weiter funktioniert.
* Wendet ein ruhiges hell- und ein dezentes dunkel-Theme an.
* Klappt das Transkript beim Start ein.
* Unterdrückt das Developer-Status-Popup beim Start.

Was die Hülle NICHT macht
-------------------------

* Sie ersetzt KEINE produktive Logik.
* Sie löscht KEINE Methoden, Mixins oder Dialoge.
* Das Profil-Bearbeiten-Fenster (``_show_profile_editor``) bleibt 1:1.
* KG-Editor, Transkript, SOAP, Dokumente, Textblöcke, Backend-Anbindung
  und alle Submodule (E-Mail, WhatsApp, Übersetzer, MedWork, ...)
  bleiben unverändert nutzbar.
"""

from __future__ import annotations

import os
import sys
import tkinter as tk
from tkinter import ttk
from typing import Optional, Callable

try:
    from PIL import Image, ImageTk
    _HAS_PIL = True
except Exception:
    _HAS_PIL = False

try:
    from aza_ui_helpers import RoundedButton, add_tooltip
except Exception:
    RoundedButton = None  # type: ignore
    add_tooltip = lambda *a, **k: None  # type: ignore


# ─── Empfang-Farbpalette (medizinisch, ruhig, professionell) ─────────────────

# Hell (default): heller Hintergrund, kräftiges aber dezentes Empfang-Blau.
LIGHT = dict(
    bg="#EAF2F7",            # Hauptfenster-Hintergrund
    surface="#FFFFFF",       # Karten / Header
    surface_alt="#F4F8FB",
    border="#D6E2EB",
    divider="#E0EAF0",
    text="#1A4D6D",          # Primärtext
    text_strong="#0F3850",
    subtle="#5C7A8E",
    accent="#5B8DB3",        # Empfang-Blau
    accent_hover="#4A7A9E",
    accent_pressed="#3A6884",
    accent_soft="#E2EEF6",
    success="#2E8B57",
    warn="#C2840F",
    danger="#C0392B",
    record="#C0392B",
    record_active="#A6291C",
    canvas_bg="#EAF2F7",
)

# Dunkel: dezent dunkelblau, augenschonend, nicht reines Schwarz.
DARK = dict(
    bg="#1F2A33",
    surface="#28333E",
    surface_alt="#2F3B47",
    border="#3A4A57",
    divider="#36454F",
    text="#E2ECF2",
    text_strong="#FFFFFF",
    subtle="#9DB3C2",
    accent="#7AB0D4",
    accent_hover="#92C2E0",
    accent_pressed="#5A92B6",
    accent_soft="#33414F",
    success="#5DC08C",
    warn="#E1AB4F",
    danger="#E07060",
    record="#E07060",
    record_active="#FF8B79",
    canvas_bg="#1F2A33",
)

_FF = "Segoe UI"

_FONT_BRAND_TITLE = (_FF, 16, "bold")
_FONT_BRAND_SUB = (_FF, 9)
_FONT_HEADER_LABEL = (_FF, 9)
_FONT_FONTSTEP = (_FF, 9)
_FONT_FONTSTEP_BTN = (_FF, 11, "bold")

_PREFS_FILE = "aza_desktop_shell_prefs.json"

# Einheitliche Standard-Maße der Pill-Buttons in der Aktionsleiste.
_BTN_W_NORMAL = 130
_BTN_W_WIDE = 168
_BTN_W_ICON = 38
_BTN_H = 34


# ─── Persistenz für Theme + Schriftgröße ─────────────────────────────────────

def _prefs_path() -> str:
    try:
        from aza_persistence import get_writable_data_dir
        return os.path.join(get_writable_data_dir(), _PREFS_FILE)
    except Exception:
        return os.path.join(os.path.dirname(os.path.abspath(__file__)), _PREFS_FILE)


def _load_prefs() -> dict:
    import json
    try:
        p = _prefs_path()
        if os.path.isfile(p):
            with open(p, "r", encoding="utf-8") as f:
                data = json.load(f)
            if isinstance(data, dict):
                return data
    except Exception:
        pass
    return {}


def _save_prefs(prefs: dict) -> None:
    import json
    try:
        with open(_prefs_path(), "w", encoding="utf-8") as f:
            json.dump(prefs, f, indent=2, ensure_ascii=False)
    except Exception:
        pass


# ─── Logo ────────────────────────────────────────────────────────────────────

def _load_logo(size: int) -> Optional[object]:
    if not _HAS_PIL:
        return None
    candidates: list[str] = []
    try:
        candidates.append(os.path.dirname(os.path.abspath(__file__)))
    except Exception:
        pass
    if getattr(sys, "frozen", False):
        try:
            candidates.append(os.path.dirname(os.path.abspath(sys.executable)))
        except Exception:
            pass
        meipass = getattr(sys, "_MEIPASS", "")
        if meipass:
            candidates.append(meipass)
    for d in candidates:
        if not d:
            continue
        p = os.path.join(d, "logo.png")
        if not os.path.isfile(p):
            continue
        try:
            img = Image.open(p)
            if img.mode not in ("RGB", "RGBA"):
                img = img.convert("RGBA")
            resample = (
                Image.Resampling.LANCZOS
                if hasattr(Image, "Resampling") else Image.LANCZOS
            )
            img = img.resize((size, size), resample)
            return ImageTk.PhotoImage(img)
        except Exception:
            continue
    return None


# ─── ttk-Style ───────────────────────────────────────────────────────────────

def _apply_ttk_theme(root: tk.Misc, t: dict) -> None:
    """Sorgt dafür, dass ttk.Frame/PanedWindow/Label im Hauptfenster sauber
    in den neuen Hintergrund integriert sind."""
    try:
        style = ttk.Style(root)
        try:
            style.theme_use("clam")
        except tk.TclError:
            pass
        style.configure("TFrame", background=t["bg"])
        style.configure("TPanedwindow", background=t["bg"])
        try:
            style.configure("TPanedwindow.Sash", background=t["divider"], width=8)
        except tk.TclError:
            pass
        style.configure("TLabel", background=t["bg"], foreground=t["text"])
        style.configure("TopBar.TFrame", background=t["surface"])
        style.configure("StatusBar.TFrame", background=t["bg"])
        style.configure("TranscriptBar.TFrame", background=t["bg"])
        style.configure(
            "TButton",
            background=t["accent"], foreground="white",
            padding=(10, 6), borderwidth=0,
        )
        style.map(
            "TButton",
            background=[("active", t["accent_hover"]),
                        ("pressed", t["accent_pressed"])],
        )
    except Exception:
        pass


# ─── Pill-Button im neuen Stil ───────────────────────────────────────────────

class ShellButton(tk.Canvas):
    """Pill-Button mit einheitlicher Höhe für die neue Hülle.

    API ist absichtlich kompatibel zu ``RoundedButton``, damit zustands-
    behaftete Knöpfe (z. B. ``self.btn_record``) nahtlos getauscht werden
    können: ``configure(text=...)``, ``set_text``, ``set_font_size_scale``,
    ``set_button_size_scale`` werden unterstützt.
    """

    def __init__(self, parent, text: str, command: Optional[Callable] = None,
                 *, theme: dict, kind: str = "default",
                 width: int = _BTN_W_NORMAL, height: int = _BTN_H,
                 radius: int = 8, tooltip: Optional[str] = None,
                 font_weight: str = "normal"):
        bg = parent.cget("bg") if hasattr(parent, "cget") else theme["surface"]
        super().__init__(parent, width=width, height=height,
                         bg=bg, highlightthickness=0, bd=0, cursor="hand2")
        self._theme = theme
        self._kind = kind
        self._radius = radius
        self._text = text
        self._command = command
        self._base_w = width
        self._base_h = height
        self._scale_w = 1.0
        self._scale_f = 1.0
        self._font_size_base = 10 if font_weight == "normal" else 10
        self._weight = "bold" if font_weight == "bold" else "normal"
        self._active = False
        self._pressed = False
        self.bind("<Configure>", lambda e: self._draw())
        self.bind("<Enter>", self._on_enter)
        self.bind("<Leave>", self._on_leave)
        self.bind("<ButtonPress-1>", self._on_press)
        self.bind("<ButtonRelease-1>", self._on_release)
        if tooltip:
            try:
                add_tooltip(self, tooltip)
            except Exception:
                pass
        self._draw()

    # ── Farbschema je Variante ────────────────────────────────────────────

    def _colors(self):
        t = self._theme
        if self._kind == "primary":
            bg = t["accent_pressed"] if self._pressed else (
                t["accent_hover"] if self._active else t["accent"])
            return bg, "white", bg
        if self._kind == "danger":
            bg = t["record_active"] if (self._active or self._pressed) else t["record"]
            return bg, "white", bg
        if self._kind == "ghost":
            bg = t["accent_soft"] if (self._active or self._pressed) else t["surface"]
            border = t["accent"] if (self._active or self._pressed) else t["border"]
            return bg, t["text"], border
        if self._kind == "icon":
            bg = t["accent_soft"] if (self._active or self._pressed) else t["surface"]
            border = t["accent"] if (self._active or self._pressed) else t["border"]
            return bg, t["text"], border
        bg = t["accent_soft"] if (self._active or self._pressed) else t["surface_alt"]
        border = t["accent"] if (self._active or self._pressed) else t["border"]
        return bg, t["text"], border

    def _draw(self):
        try:
            self.delete("all")
            w = max(int(self._base_w * self._scale_w), int(self.winfo_width()))
            h = max(int(self._base_h * self._scale_w), int(self.winfo_height()))
            if w <= 1:
                w = int(self._base_w * self._scale_w)
            if h <= 1:
                h = int(self._base_h * self._scale_w)
            fill, fg, border = self._colors()
            r = max(2, min(self._radius, h // 2))
            self._round_rect(0, 0, w, h, r, fill=fill, outline=border)
            font_size = max(7, int(self._font_size_base * self._scale_f))
            self.create_text(
                w // 2, h // 2, text=self._text, fill=fg,
                font=(_FF, font_size, self._weight),
            )
        except Exception:
            pass

    def _round_rect(self, x1, y1, x2, y2, r, **kw):
        pts = [
            x1 + r, y1, x2 - r, y1,
            x2, y1, x2, y1 + r,
            x2, y2 - r, x2, y2,
            x2 - r, y2, x1 + r, y2,
            x1, y2, x1, y2 - r,
            x1, y1 + r, x1, y1,
        ]
        return self.create_polygon(pts, smooth=True, **kw)

    # ── Events ────────────────────────────────────────────────────────────

    def _on_enter(self, _e=None):
        self._active = True
        self._draw()

    def _on_leave(self, _e=None):
        self._active = False
        self._pressed = False
        self._draw()

    def _on_press(self, _e=None):
        self._pressed = True
        self._draw()

    def _on_release(self, _e=None):
        was_pressed = self._pressed
        self._pressed = False
        self._draw()
        if was_pressed and self._command:
            try:
                self._command()
            except Exception as exc:
                print(f"[Shell] Aktion '{self._text}' fehlgeschlagen: {exc}")

    # ── Kompatibilitäts-API zu RoundedButton ──────────────────────────────

    def configure(self, **kw):
        if "command" in kw:
            self._command = kw.pop("command")
        if "text" in kw:
            self._text = str(kw.pop("text"))
            self._draw()
        if "bg" in kw or "background" in kw:
            try:
                super().configure(bg=kw.pop("bg", kw.pop("background", None)))
            except Exception:
                pass
        if kw:
            try:
                super().configure(**kw)
            except Exception:
                pass

    config = configure

    def set_text(self, text: str):
        self.configure(text=text)

    def set_font_size_scale(self, scale: float):
        self._scale_f = max(0.4, min(2.0, float(scale)))
        self._draw()

    def set_button_size_scale(self, scale: float):
        self._scale_w = max(0.4, min(2.0, float(scale)))
        new_w = int(self._base_w * self._scale_w)
        new_h = int(self._base_h * self._scale_w)
        try:
            super().configure(width=new_w, height=new_h)
        except Exception:
            pass
        self._draw()

    def set_font_scale(self, scale: float):
        self.set_font_size_scale(scale)
        self.set_button_size_scale(scale)

    def apply_theme(self, theme: dict):
        self._theme = theme
        try:
            super().configure(bg=self.master.cget("bg"))
        except Exception:
            pass
        self._draw()


# ─── Hülle ───────────────────────────────────────────────────────────────────

class _DesktopShell:
    def __init__(self, app):
        self.app = app
        prefs = _load_prefs()
        self._dark: bool = bool(prefs.get("dark_mode", False))
        self._font_step: int = max(-2, min(4, int(prefs.get("font_step", 0))))
        self._theme: dict = DARK.copy() if self._dark else LIGHT.copy()
        self._logo_img = None
        self._brand_title_lbl: Optional[tk.Label] = None
        self._brand_sub_lbl: Optional[tk.Label] = None
        self._logo_lbl: Optional[tk.Label] = None
        self._header_frame: Optional[tk.Frame] = None
        self._action_frame: Optional[tk.Frame] = None
        self._theme_btn: Optional[ShellButton] = None
        self._transcript_btn: Optional[ShellButton] = None
        self._font_label: Optional[tk.Label] = None
        self._all_shell_buttons: list[ShellButton] = []
        self._connection_dot: Optional[tk.Canvas] = None
        self._connection_lbl: Optional[tk.Label] = None
        self._chk_widgets: list = []

    # ── Public ───────────────────────────────────────────────────────────

    def install(self) -> None:
        app = self.app
        try:
            app.title(self._title())
        except Exception:
            pass

        self._hide_legacy_chrome()
        self._restyle_window()
        self._build_header()
        self._build_action_bar()
        self._reorder_main_layout()
        self._restyle_inner_panels()
        self._suppress_dev_status_popup()
        self._collapse_transcript_default()
        self._mirror_backend_status()
        self._apply_font_step(self._font_step, persist=False)

    # ── Titel / Theme ────────────────────────────────────────────────────

    def _title(self) -> str:
        try:
            from aza_version import APP_VERSION
            return f"AzA Office  (v{APP_VERSION})"
        except Exception:
            return "AzA Office"

    def _restyle_window(self):
        app = self.app
        t = self._theme
        try:
            app.configure(bg=t["bg"])
        except Exception:
            pass
        _apply_ttk_theme(app, t)

    # ── Altes Chrome verstecken ──────────────────────────────────────────

    def _hide_legacy_chrome(self):
        """Versteckt die alte chaotische Toolbar, das Bottom-Logo und die
        Modul-Spalte mit dem alten 'An Empfang senden'-Button."""
        app = self.app

        # Alte obere Toolbar (top-Frame) – komplett verstecken.
        try:
            top = getattr(app, "_btn_row_left", None)
            if top is not None and top.master is not None:
                top.master.pack_forget()
        except Exception:
            pass

        # Status-Zeile bleibt sichtbar, wird aber später neu eingeordnet.
        # Bottom-Frame ("Ablauf:"-Erklärtext) entfernen – Information ist
        # in der neuen Hülle implizit.
        try:
            if getattr(app, "_bottom_frame", None) is not None:
                app._bottom_frame.pack_forget()
        except Exception:
            pass

        # Doppeltes Branding-Logo unten ausblenden.
        try:
            if getattr(app, "_logo_frame", None) is not None:
                try:
                    app._logo_frame.place_forget()
                except Exception:
                    app._logo_frame.pack_forget()
        except Exception:
            pass

        # "Weitere Module" – die Empfang-Aktion wird in den neuen Header
        # gehoben. Die Spalte selbst bleibt funktional erhalten, der
        # Empfang-Knopf wird aber dort entfernt, um Doppelaktionen
        # zu vermeiden.
        rows = getattr(app, "_addon_button_rows", None)
        if isinstance(rows, dict) and "empfang" in rows:
            try:
                rows["empfang"].pack_forget()
            except Exception:
                pass

    # ── Header ───────────────────────────────────────────────────────────

    def _build_header(self):
        app = self.app
        t = self._theme

        header = tk.Frame(app, bg=t["surface"], bd=0,
                          highlightthickness=0)
        header.pack(side="top", fill="x", before=app.winfo_children()[0])
        self._header_frame = header

        # untere Trennlinie
        sep = tk.Frame(app, bg=t["border"], height=1)
        sep.pack(side="top", fill="x", before=app.winfo_children()[1])
        self._header_sep = sep

        inner = tk.Frame(header, bg=t["surface"])
        inner.pack(fill="x", padx=18, pady=10)

        # Links: Branding
        brand = tk.Frame(inner, bg=t["surface"])
        brand.pack(side="left")

        self._logo_img = _load_logo(size=44)
        if self._logo_img is not None:
            self._logo_lbl = tk.Label(
                brand, image=self._logo_img, bg=t["surface"],
                bd=0, highlightthickness=0,
            )
            self._logo_lbl.pack(side="left", padx=(0, 12))

        text_block = tk.Frame(brand, bg=t["surface"])
        text_block.pack(side="left", anchor="w")

        self._brand_title_lbl = tk.Label(
            text_block, text="AzA von Arzt zu Arzt",
            font=_FONT_BRAND_TITLE, bg=t["surface"], fg=t["text_strong"],
            anchor="w",
        )
        self._brand_title_lbl.pack(anchor="w")

        self._brand_sub_lbl = tk.Label(
            text_block, text="Informatik zu fairen Preisen",
            font=_FONT_BRAND_SUB, bg=t["surface"], fg=t["subtle"],
            anchor="w",
        )
        self._brand_sub_lbl.pack(anchor="w")

        # Rechts: Verbindung + Kontoaktionen
        right = tk.Frame(inner, bg=t["surface"])
        right.pack(side="right")

        # Verbindungs-Indikator (nutzt vorhandene App-Variable)
        conn_box = tk.Frame(right, bg=t["surface"])
        conn_box.pack(side="left", padx=(0, 14))
        self._connection_dot = tk.Canvas(
            conn_box, width=10, height=10, bg=t["surface"],
            highlightthickness=0, bd=0,
        )
        self._connection_dot.pack(side="left", padx=(0, 6))
        self._connection_lbl = tk.Label(
            conn_box, text="Verbindung wird geprüft …",
            font=_FONT_HEADER_LABEL, bg=t["surface"], fg=t["subtle"],
        )
        self._connection_lbl.pack(side="left")

        self._add_header_btn(
            right, "Profil", lambda: self._safe_call(app, "_show_profile_editor"),
            tooltip="Profil bearbeiten",
        )
        self._add_header_btn(
            right, "Aktivierung", lambda: self._safe_call(app, "_show_activation_dialog"),
            tooltip="Aktivierung verwalten",
        )
        self._add_header_btn(
            right, "Status", lambda: self._safe_call(app, "_open_systemstatus"),
            tooltip="Systemstatus und Diagnose",
        )
        self._add_header_btn(
            right, "Einstellungen", lambda: self._safe_call(app, "_open_settings"),
            tooltip="Einstellungen öffnen",
        )
        self._add_header_btn(
            right, "Abonnement",
            lambda: self._safe_call(app, "_open_billing_portal_from_ui"),
            tooltip="Abonnement und Rechnungen verwalten",
        )

    def _add_header_btn(self, parent, text: str, cmd, *, tooltip: str | None = None):
        b = ShellButton(
            parent, text, command=cmd, theme=self._theme,
            kind="ghost", width=110, height=30, tooltip=tooltip,
        )
        b.pack(side="left", padx=(0, 6))
        self._all_shell_buttons.append(b)
        return b

    # ── Action-Bar ───────────────────────────────────────────────────────

    def _build_action_bar(self):
        app = self.app
        t = self._theme

        bar = tk.Frame(app, bg=t["bg"], bd=0, highlightthickness=0)
        # Direkt unter dem Header platzieren (Header + Separator sind als
        # erste zwei Kinder gepackt).
        bar.pack(side="top", fill="x", padx=18, pady=(10, 6))
        self._action_frame = bar

        left = tk.Frame(bar, bg=t["bg"])
        left.pack(side="left")

        right = tk.Frame(bar, bg=t["bg"])
        right.pack(side="right")

        # Primäre Aufnahme-Aktionen – Re-Bind der zustandsbehafteten Knöpfe.
        new_record = ShellButton(
            left, "⏺ Aufnahme",
            command=self._delegate(app, "toggle_record"),
            theme=t, kind="danger", width=_BTN_W_NORMAL, height=_BTN_H,
            font_weight="bold", tooltip="Aufnahme starten / stoppen",
        )
        new_record.pack(side="left", padx=(0, 6))
        self._reassign_button(app, "btn_record", new_record)

        new_korrigieren = ShellButton(
            left, "⏺ Korrigieren",
            command=self._delegate(app, "_toggle_record_append"),
            theme=t, kind="danger", width=_BTN_W_NORMAL, height=_BTN_H,
            font_weight="bold", tooltip="Zusätzliches Diktat anhängen",
        )
        new_korrigieren.pack(side="left", padx=(0, 12))
        self._reassign_button(app, "btn_record_append", new_korrigieren)

        # Weitere primäre Aktionen – einheitliche Größe.
        for label, attr_method, tip in [
            ("Audio importieren", "_import_and_transcribe_audio",
             "Audiodatei auswählen und transkribieren"),
            ("Diktat",   "open_diktat_window",  "Diktatfenster öffnen"),
            ("Notizen",  "open_notizen_window", "Projekt-Notizen anzeigen"),
            ("Neu",      "_new_session",        "Neue Sitzung beginnen"),
        ]:
            b = ShellButton(
                left, label, command=self._delegate(app, attr_method),
                theme=t, kind="default", width=_BTN_W_NORMAL, height=_BTN_H,
                tooltip=tip,
            )
            b.pack(side="left", padx=(0, 6))
            self._all_shell_buttons.append(b)

        # Rechts: Transkript-Toggle, A−/A+, Hell/Dunkel, An Empfang senden
        self._transcript_btn = ShellButton(
            right, "Transkript einblenden",
            command=self._on_toggle_transcript, theme=t, kind="ghost",
            width=_BTN_W_WIDE, height=_BTN_H,
            tooltip="Transkript ein-/ausblenden",
        )
        self._transcript_btn.pack(side="left", padx=(6, 6))
        self._all_shell_buttons.append(self._transcript_btn)

        # Schriftgrößen-Stepper
        font_box = tk.Frame(
            right, bg=t["surface"],
            highlightthickness=1, highlightbackground=t["border"],
        )
        font_box.pack(side="left", padx=(0, 6))
        self._font_box = font_box
        btn_minus = tk.Label(
            font_box, text="A−", font=_FONT_FONTSTEP_BTN,
            bg=t["surface"], fg=t["text"],
            padx=10, pady=4, cursor="hand2",
        )
        btn_minus.pack(side="left")
        btn_minus.bind("<Button-1>", lambda e: self._on_font_step(-1))
        try:
            add_tooltip(btn_minus, "Schrift verkleinern")
        except Exception:
            pass
        self._font_label = tk.Label(
            font_box, text=self._font_step_label(),
            font=_FONT_FONTSTEP, bg=t["surface"], fg=t["subtle"],
            padx=4, pady=4, width=8, anchor="center",
        )
        self._font_label.pack(side="left")
        btn_plus = tk.Label(
            font_box, text="A+", font=_FONT_FONTSTEP_BTN,
            bg=t["surface"], fg=t["text"],
            padx=10, pady=4, cursor="hand2",
        )
        btn_plus.pack(side="left")
        btn_plus.bind("<Button-1>", lambda e: self._on_font_step(+1))
        try:
            add_tooltip(btn_plus, "Schrift vergrößern")
        except Exception:
            pass
        self._font_minus, self._font_plus = btn_minus, btn_plus

        self._theme_btn = ShellButton(
            right, "Dunkel" if not self._dark else "Hell",
            command=self._on_toggle_theme, theme=t, kind="ghost",
            width=80, height=_BTN_H, tooltip="Hell-/Dunkel-Modus",
        )
        self._theme_btn.pack(side="left", padx=(0, 6))
        self._all_shell_buttons.append(self._theme_btn)

        send = ShellButton(
            right, "An Empfang senden",
            command=self._delegate(app, "_send_to_empfang"),
            theme=t, kind="primary", width=_BTN_W_WIDE, height=_BTN_H,
            font_weight="bold",
            tooltip="Aktuelle Krankengeschichte an den Empfang übergeben",
        )
        send.pack(side="left")
        self._all_shell_buttons.append(send)

    # ── Hauptbereich neu einordnen ───────────────────────────────────────

    def _reorder_main_layout(self):
        """Bringt die produktive UI (Status-Zeile + Paned Window) sauber
        unter Header und Aktionsleiste, ohne das innere Layout zu zerstören."""
        app = self.app

        # Status-Zeile direkt unter der Action-Bar zeigen, danach Paned.
        try:
            if getattr(app, "_status_row", None) is not None:
                app._status_row.pack_forget()
                app._status_row.pack(fill="x", padx=18, pady=(0, 4))
        except Exception:
            pass

        try:
            if getattr(app, "paned", None) is not None:
                app.paned.pack_forget()
                app.paned.pack(fill="both", expand=True,
                               padx=18, pady=(0, 12))
        except Exception:
            pass

    # ── Innere Panels in Empfang-Look bringen ────────────────────────────

    def _restyle_inner_panels(self):
        """Setzt die Hintergrund- und Textfarben der wichtigsten Container
        und Labels in der ursprünglichen UI auf das neue Theme.

        Wir berühren bewusst nur Frames und Labels – die fertigen
        ``RoundedButton``-Knöpfe in der KG-Spalte (KG erstellen, Brief,
        SOAP-Pfeile, Textblöcke) behalten ihre Form und Funktion, damit
        die produktiven Aktionen unverändert nutzbar bleiben."""
        app = self.app
        t = self._theme

        try:
            app.configure(bg=t["bg"])
        except Exception:
            pass

        for attr in (
            "lbl_status", "_lbl_build", "_token_label", "_backend_status_label",
        ):
            w = getattr(app, attr, None)
            if w is None:
                continue
            try:
                w.configure(bg=t["bg"])
            except Exception:
                pass

        for attr in (
            "_transcript_toggle_label", "_kg_toggle_label",
            "_addon_toggle_label", "_soap_toggle_label",
            "_dokumente_toggle_label", "_textbloecke_toggle_label",
        ):
            w = getattr(app, attr, None)
            if w is None:
                continue
            try:
                w.configure(bg=t["bg"], fg=t["text"])
            except Exception:
                pass

        # Status-Zeile / Build-Label
        try:
            if getattr(app, "_status_row", None) is not None:
                app._status_row.configure(style="StatusBar.TFrame")
        except Exception:
            pass

        # Checkbuttons (Kommentare/Empfang anzeigen, Rechtsklick-Paste)
        for attr in ("_chk_kommentare_auto", "_chk_empfang_auto",
                     "_rclick_cb"):
            w = getattr(app, attr, None)
            if w is None:
                continue
            try:
                w.configure(
                    bg=t["bg"], activebackground=t["bg"],
                    fg=t["text"], selectcolor=t["bg"],
                )
                self._chk_widgets.append(w)
            except Exception:
                pass

    # ── Verhalten / Aktionen ─────────────────────────────────────────────

    def _suppress_dev_status_popup(self):
        app = self.app
        try:
            existing = getattr(app, "_dev_status_window", None)
            if existing is not None and existing.winfo_exists():
                existing.destroy()
        except Exception:
            pass
        app._dev_status_window = None

    def _collapse_transcript_default(self):
        app = self.app
        try:
            if getattr(app, "_transcript_collapsed", False):
                self._sync_transcript_btn()
                return
            if hasattr(app, "_toggle_transcript_collapse"):
                app._toggle_transcript_collapse()
            else:
                frame = getattr(app, "_transcript_frame", None)
                if frame is not None:
                    frame.pack_forget()
                app._transcript_collapsed = True
            self._sync_transcript_btn()
        except Exception:
            pass

    def _sync_transcript_btn(self):
        if not self._transcript_btn:
            return
        collapsed = bool(getattr(self.app, "_transcript_collapsed", True))
        self._transcript_btn.set_text(
            "Transkript einblenden" if collapsed else "Transkript ausblenden"
        )

    def _on_toggle_transcript(self):
        app = self.app
        try:
            if hasattr(app, "_toggle_transcript_collapse"):
                app._toggle_transcript_collapse()
            else:
                frame = getattr(app, "_transcript_frame", None)
                if frame is None:
                    return
                if getattr(app, "_transcript_collapsed", False):
                    frame.pack(fill="both", expand=True)
                    app._transcript_collapsed = False
                else:
                    frame.pack_forget()
                    app._transcript_collapsed = True
        finally:
            self._sync_transcript_btn()

    def _on_toggle_theme(self):
        self._dark = not self._dark
        self._theme = DARK.copy() if self._dark else LIGHT.copy()
        prefs = _load_prefs()
        prefs["dark_mode"] = self._dark
        _save_prefs(prefs)
        self._reapply_theme()
        if self._theme_btn:
            self._theme_btn.set_text("Hell" if self._dark else "Dunkel")

    def _reapply_theme(self):
        app = self.app
        t = self._theme
        try:
            app.configure(bg=t["bg"])
        except Exception:
            pass
        _apply_ttk_theme(app, t)
        for attr in ("_header_frame",):
            w = getattr(self, attr, None)
            if w is not None:
                try:
                    w.configure(bg=t["surface"])
                    self._recolor_descendants(w, bg=t["surface"], fg=t["text"])
                except Exception:
                    pass
        try:
            if self._header_sep is not None:
                self._header_sep.configure(bg=t["border"])
        except Exception:
            pass
        try:
            if self._action_frame is not None:
                self._action_frame.configure(bg=t["bg"])
                self._recolor_descendants(self._action_frame,
                                          bg=t["bg"], fg=t["text"])
        except Exception:
            pass
        try:
            self._brand_title_lbl.configure(bg=t["surface"], fg=t["text_strong"])
            self._brand_sub_lbl.configure(bg=t["surface"], fg=t["subtle"])
            if self._logo_lbl is not None:
                self._logo_lbl.configure(bg=t["surface"])
        except Exception:
            pass
        try:
            self._font_box.configure(bg=t["surface"],
                                     highlightbackground=t["border"])
            self._font_minus.configure(bg=t["surface"], fg=t["text"])
            self._font_plus.configure(bg=t["surface"], fg=t["text"])
            self._font_label.configure(bg=t["surface"], fg=t["subtle"])
        except Exception:
            pass
        try:
            self._connection_dot.configure(bg=t["surface"])
            self._connection_lbl.configure(bg=t["surface"], fg=t["subtle"])
        except Exception:
            pass
        for b in self._all_shell_buttons:
            try:
                b.apply_theme(t)
            except Exception:
                pass
        for w in self._chk_widgets:
            try:
                w.configure(
                    bg=t["bg"], activebackground=t["bg"],
                    fg=t["text"], selectcolor=t["bg"],
                )
            except Exception:
                pass
        # Innere Panels mitziehen
        self._restyle_inner_panels()
        self._mirror_backend_status(force=True)

    def _recolor_descendants(self, parent, *, bg: str, fg: str):
        try:
            for child in parent.winfo_children():
                if isinstance(child, tk.Frame):
                    try:
                        child.configure(bg=bg)
                    except Exception:
                        pass
                    self._recolor_descendants(child, bg=bg, fg=fg)
                elif isinstance(child, tk.Label):
                    try:
                        child.configure(bg=bg)
                    except Exception:
                        pass
        except Exception:
            pass

    # ── Schriftgröße ──────────────────────────────────────────────────────

    _FONT_DELTA = 0.10

    def _font_step_label(self) -> str:
        if self._font_step == 0:
            return "Standard"
        sign = "+" if self._font_step > 0 else "−"
        return f"{sign}{abs(self._font_step)}"

    def _on_font_step(self, delta: int):
        new_step = max(-2, min(4, self._font_step + delta))
        if new_step == self._font_step:
            return
        self._font_step = new_step
        self._apply_font_step(new_step, persist=True)

    def _apply_font_step(self, step: int, *, persist: bool):
        app = self.app
        try:
            base = 1.0
            try:
                from aza_config import FIXED_FONT_SCALE
                base = float(FIXED_FONT_SCALE)
            except Exception:
                pass
            scale = max(0.4, base + step * self._FONT_DELTA)
            if hasattr(app, "_apply_font_scale_global"):
                app._apply_font_scale_global(scale)
            elif hasattr(app, "_apply_font_scale"):
                app._apply_font_scale(scale)
        except Exception as exc:
            print(f"[Shell] Schriftskalierung fehlgeschlagen: {exc}")
        try:
            if self._font_label is not None:
                self._font_label.configure(text=self._font_step_label())
        except Exception:
            pass
        if persist:
            prefs = _load_prefs()
            prefs["font_step"] = step
            _save_prefs(prefs)

    # ── Verbindungsanzeige (spiegelt _backend_status_var) ────────────────

    def _mirror_backend_status(self, *, force: bool = False):
        app = self.app
        try:
            var = getattr(app, "_backend_status_var", None)
            if var is None:
                return
            if not hasattr(self, "_last_status_text"):
                self._last_status_text = None
            txt = ""
            try:
                txt = str(var.get())
            except Exception:
                pass
            if force or txt != self._last_status_text:
                self._last_status_text = txt
                self._render_connection(txt)
        except Exception:
            pass
        try:
            app.after(1500, self._mirror_backend_status)
        except Exception:
            pass

    def _render_connection(self, txt: str):
        t = self._theme
        if not self._connection_dot or not self._connection_lbl:
            return
        low = txt.lower()
        if any(k in low for k in ("verbund", "online", "ok")):
            color, label = t["success"], "Verbunden"
        elif "geprüft" in low or "prüf" in low or "warte" in low:
            color, label = t["warn"], txt or "Verbindung wird geprüft …"
        else:
            color = t["danger"]
            label = txt if txt else "Nicht verbunden"
        try:
            self._connection_dot.delete("all")
            self._connection_dot.create_oval(
                1, 1, 9, 9, fill=color, outline=color,
            )
            self._connection_lbl.configure(text=label, fg=color)
        except Exception:
            pass

    # ── Helfer ───────────────────────────────────────────────────────────

    def _delegate(self, obj, attr: str) -> Callable:
        def _do():
            self._safe_call(obj, attr)
        return _do

    @staticmethod
    def _safe_call(obj, attr: str):
        fn = getattr(obj, attr, None)
        if not callable(fn):
            return
        try:
            fn()
        except Exception as exc:
            print(f"[Shell] Aufruf '{attr}' fehlgeschlagen: {exc}")

    def _reassign_button(self, app, attr_name: str, new_btn: ShellButton):
        """Ersetzt einen bestehenden RoundedButton-Attributverweis durch
        unseren neuen Pill-Button. State-Updates aus der App
        (``self.btn_record.configure(text=...)``) treffen damit den
        sichtbaren neuen Button.

        Der alte Knopf bleibt weiterhin als Python-Objekt bestehen
        (er sitzt im versteckten alten Top-Frame), wird aber nicht mehr
        angezeigt und bekommt keine Klicks mehr."""
        try:
            scalable = getattr(app, "_scalable_widgets", None)
            old = getattr(app, attr_name, None)
            if isinstance(scalable, list) and old in scalable:
                scalable.remove(old)
        except Exception:
            pass
        try:
            setattr(app, attr_name, new_btn)
        except Exception:
            return
        self._all_shell_buttons.append(new_btn)
        try:
            scalable = getattr(app, "_scalable_widgets", None)
            if isinstance(scalable, list):
                scalable.append(new_btn)
        except Exception:
            pass


# ─── Öffentliche API ─────────────────────────────────────────────────────────

def apply_desktop_shell(app) -> None:
    """Wendet die saubere AzA-Desktop-Hülle auf eine bestehende
    ``KGDesktopApp`` an. Idempotent."""
    if getattr(app, "_aza_shell_installed", False):
        return
    try:
        shell = _DesktopShell(app)
        shell.install()
        app._aza_shell = shell
        app._aza_shell_installed = True
    except Exception as exc:
        print(f"[Shell] Installation fehlgeschlagen: {exc}")
        import traceback
        traceback.print_exc()


__all__ = ["apply_desktop_shell"]