# -*- coding: utf-8 -*-
"""IPC-Datei: aktiver Chat-Peer der Empfang-WebView (keine Nachrichteninhalte)."""
from __future__ import annotations

import json
import time
from pathlib import Path
from typing import Any, Optional

_SURFACE_TTL_SEC = 45.0


def shell_surface_state_path() -> Path:
    try:
        from aza_persistence import get_writable_data_dir

        root = Path(get_writable_data_dir())
    except Exception:
        root = Path.home() / ".aza"
    return root / "empfang_shell_surface.json"


def write_shell_surface_state(payload: dict[str, Any]) -> None:
    data = {
        "ts": time.time(),
        "mode": str(payload.get("mode") or "").strip()[:32],
        "peer_user_id": str(payload.get("peer_user_id") or "").strip()[:64],
        "external_peer_user_id": str(payload.get("external_peer_user_id") or "").strip()[:64],
        "document_visible": bool(payload.get("document_visible")),
        "has_focus": bool(payload.get("has_focus")),
        "shell_minimized": bool(payload.get("shell_minimized")),
    }
    path = shell_surface_state_path()
    try:
        path.parent.mkdir(parents=True, exist_ok=True)
        tmp = path.with_suffix(".tmp")
        tmp.write_text(json.dumps(data, ensure_ascii=False), encoding="utf-8")
        tmp.replace(path)
    except Exception:
        pass


def read_shell_surface_state(*, max_age_sec: float = _SURFACE_TTL_SEC) -> Optional[dict[str, Any]]:
    path = shell_surface_state_path()
    try:
        if not path.is_file():
            return None
        raw = path.read_text(encoding="utf-8")
        data = json.loads(raw)
        if not isinstance(data, dict):
            return None
        age = time.time() - float(data.get("ts") or 0)
        if age > float(max_age_sec):
            return None
        return data
    except Exception:
        return None


def peer_matches_surface(peer_user_id: str, surface: Optional[dict[str, Any]]) -> bool:
    puid = (peer_user_id or "").strip()
    if not puid or not isinstance(surface, dict):
        return False
    for k in ("peer_user_id", "external_peer_user_id"):
        if str(surface.get(k) or "").strip() == puid:
            return True
    return False


def surface_indicates_active_direct_chat(
    peer_user_id: str,
    *,
    require_visible: bool = True,
    require_not_minimized: bool = True,
) -> bool:
    st = read_shell_surface_state()
    if not st:
        return False
    if str(st.get("mode") or "") != "direct":
        return False
    if require_visible and not bool(st.get("document_visible")):
        return False
    if require_not_minimized and bool(st.get("shell_minimized")):
        return False
    return peer_matches_surface(peer_user_id, st)


def shell_peer_refresh_signal_path() -> Path:
    try:
        from aza_persistence import get_writable_data_dir

        root = Path(get_writable_data_dir())
    except Exception:
        root = Path.home() / ".aza"
    return root / "empfang_shell_peer_refresh.json"


def touch_shell_peer_refresh_signal(*, source: str = "") -> None:
    """Kontakt-Panel / Fokus-Pfad: Huelle soll Shell-Context erneut lesen (keine Peer-IDs)."""
    path = shell_peer_refresh_signal_path()
    try:
        path.parent.mkdir(parents=True, exist_ok=True)
        tmp = path.with_suffix(".tmp")
        tmp.write_text(
            json.dumps(
                {"ts": time.time(), "source": str(source or "").strip()[:32]},
                ensure_ascii=False,
            ),
            encoding="utf-8",
        )
        tmp.replace(path)
    except Exception:
        pass


def consume_shell_peer_refresh_signal(last_seen_ts: float = 0.0) -> float:
    """Liefert neuen Signal-Zeitstempel oder 0.0 — ohne Inhalte zu loggen."""
    path = shell_peer_refresh_signal_path()
    try:
        if not path.is_file():
            return 0.0
        data = json.loads(path.read_text(encoding="utf-8"))
        if not isinstance(data, dict):
            return 0.0
        ts = float(data.get("ts") or 0.0)
        if ts <= float(last_seen_ts or 0.0):
            return 0.0
        return ts
    except Exception:
        return 0.0


def empfang_shell_debug_log_path() -> Path:
    try:
        from aza_persistence import get_writable_data_dir

        root = Path(get_writable_data_dir())
    except Exception:
        root = Path.home() / ".aza"
    return root / "empfang_shell_debug.log"


def append_empfang_shell_debug_log(line: str) -> None:
    """Technische Kurzzeile ohne Tokens, Peer-IDs oder URLs mit Query."""
    msg = str(line or "").strip()
    if not msg:
        return
    path = empfang_shell_debug_log_path()
    try:
        path.parent.mkdir(parents=True, exist_ok=True)
        stamp = time.strftime("%Y-%m-%dT%H:%M:%S")
        with path.open("a", encoding="utf-8", newline="\n") as f:
            f.write(f"{stamp} {msg}\n")
    except Exception:
        pass


_OFFICE_EMPFANG_CHAT_SHELL_OPEN_REQUEST = "office_empfang_chat_shell_open_request.flag"


def _office_shell_ipc_path(name: str) -> Path:
    try:
        from aza_persistence import get_writable_data_dir

        root = Path(get_writable_data_dir())
    except Exception:
        root = Path.home() / ".aza"
    return root / name


def request_office_open_empfang_chat_shell_ipc() -> None:
    """Kontakt-Panel -> Office: Chat-Huelle per Office-Starter oeffnen/fokussieren."""
    try:
        path = _office_shell_ipc_path(_OFFICE_EMPFANG_CHAT_SHELL_OPEN_REQUEST)
        path.parent.mkdir(parents=True, exist_ok=True)
        path.write_text("1", encoding="utf-8")
    except Exception:
        pass


def consume_office_open_empfang_chat_shell_request_flag() -> bool:
    try:
        path = _office_shell_ipc_path(_OFFICE_EMPFANG_CHAT_SHELL_OPEN_REQUEST)
        if not path.is_file():
            return False
        path.unlink(missing_ok=True)
        return True
    except Exception:
        return False