from __future__ import annotations

import html
import json
import re
import time
from pathlib import Path
from typing import Any
from urllib import error, request

from config import BotConfig
from telegram_api import TelegramAPI


STATE_FILE = Path(__file__).resolve().parent.parent / ".new-qwen" / "telegram-state.json"
TYPING_INTERVAL_SECONDS = 4.0
BOT_COMMANDS = [
    {"command": "help", "description": "Список команд"},
    {"command": "status", "description": "Статус сервера и чата"},
    {"command": "auth", "description": "Запустить Qwen OAuth"},
    {"command": "provider", "description": "Выбрать провайдера"},
    {"command": "model", "description": "Выбрать модель"},
    {"command": "session", "description": "Показать сессию"},
    {"command": "clear", "description": "Очистить контекст"},
    {"command": "cancel", "description": "Отменить активный job"},
]


def load_state() -> dict[str, Any]:
    if not STATE_FILE.exists():
        return {
            "offset": None,
            "sessions": {},
            "auth_flows": {},
            "active_jobs": {},
            "chat_active_jobs": {},
            "chat_queues": {},
            "pending_approvals": {},
            "chat_preferences": {},
        }
    state = json.loads(STATE_FILE.read_text(encoding="utf-8"))
    state.setdefault("sessions", {})
    state.setdefault("auth_flows", {})
    state.setdefault("active_jobs", {})
    state.setdefault("chat_active_jobs", {})
    state.setdefault("chat_queues", {})
    state.setdefault("pending_approvals", {})
    state.setdefault("chat_preferences", {})
    return state


def save_state(state: dict[str, Any]) -> None:
    STATE_FILE.parent.mkdir(parents=True, exist_ok=True)
    STATE_FILE.write_text(json.dumps(state, ensure_ascii=False, indent=2), encoding="utf-8")


def post_json(url: str, payload: dict[str, Any]) -> dict[str, Any]:
    data = json.dumps(payload).encode("utf-8")
    req = request.Request(
        url,
        data=data,
        headers={"Content-Type": "application/json"},
        method="POST",
    )
    with request.urlopen(req, timeout=300) as response:
        return json.loads(response.read().decode("utf-8"))


def get_json(url: str) -> dict[str, Any]:
    with request.urlopen(url, timeout=60) as response:
        return json.loads(response.read().decode("utf-8"))


def send_text_chunks(api: TelegramAPI, chat_id: int, text: str) -> None:
    normalized = text or "Пустой ответ."
    chunk_size = 3800
    for start in range(0, len(normalized), chunk_size):
        api.send_message(chat_id, normalized[start : start + chunk_size])


def ensure_bot_commands(api: TelegramAPI, state: dict[str, Any]) -> None:
    api.set_my_commands(BOT_COMMANDS)


def get_provider_catalog(config: BotConfig) -> dict[str, Any]:
    return get_json(f"{config.server_url}/api/v1/provider-catalog")


def get_chat_preferences(state: dict[str, Any], chat_id: int) -> dict[str, Any]:
    prefs = state.setdefault("chat_preferences", {}).setdefault(str(chat_id), {})
    prefs.setdefault("provider", None)
    prefs.setdefault("model", None)
    return prefs


def get_selected_provider_and_model(
    state: dict[str, Any],
    chat_id: int,
    catalog: dict[str, Any],
) -> tuple[str | None, str | None]:
    prefs = get_chat_preferences(state, chat_id)
    provider = prefs.get("provider") or catalog.get("default_provider")
    model = prefs.get("model")
    providers = {item.get("name"): item for item in catalog.get("providers", [])}
    provider_info = providers.get(provider or "")
    available_models = provider_info.get("models", []) if provider_info else []
    if not model and available_models:
        model = available_models[0].get("id")
    return provider, model


def format_status_text(job_state: dict[str, Any], text: str) -> str:
    del job_state
    return (text or "Пустой ответ.")[:4000]


def format_final_signature(job_state: dict[str, Any]) -> str:
    model = job_state.get("model") if isinstance(job_state.get("model"), str) else None
    if not model:
        return ""
    return f"\n\n<i>{html.escape(model)}</i>"


def render_markdownish_html(text: str) -> str:
    normalized = (text or "Пустой ответ.").replace("\r\n", "\n")
    fence_pattern = re.compile(r"```(?:[^\n`]*)\n(.*?)```", re.DOTALL)
    placeholders: list[str] = []

    def replace_fence(match: re.Match[str]) -> str:
        placeholders.append(f"<pre>{html.escape(match.group(1).strip())}</pre>")
        return f"@@CODEBLOCK_{len(placeholders) - 1}@@"

    normalized = fence_pattern.sub(replace_fence, normalized)
    escaped = html.escape(normalized)
    escaped = re.sub(r"(?<!\*)\*\*(.+?)\*\*(?!\*)", r"<b>\1</b>", escaped)
    escaped = re.sub(r"`([^`\n]+)`", r"<code>\1</code>", escaped)
    escaped = re.sub(r"(?m)^\*\s+", "• ", escaped)
    escaped = re.sub(r"(?m)^-\s+", "• ", escaped)
    for index, block in enumerate(placeholders):
        escaped = escaped.replace(f"@@CODEBLOCK_{index}@@", block)
    return escaped


def update_status_message(
    api: TelegramAPI,
    job_state: dict[str, Any],
    text: str,
) -> None:
    normalized = format_status_text(job_state, text)
    chat_id = int(job_state["chat_id"])
    message_id = int(job_state.get("status_message_id") or 0)
    if message_id:
        api.edit_message_text(chat_id, message_id, normalized)
    else:
        message_id = api.send_message(chat_id, normalized)
        job_state["status_message_id"] = message_id
    job_state["status_message_text"] = normalized
    job_state["status_body_text"] = text or "Пустой ответ."


def set_final_message(
    api: TelegramAPI,
    job_state: dict[str, Any],
    text: str,
) -> None:
    normalized = text or "Пустой ответ."
    chunk_size = 3800
    signature = format_final_signature(job_state)
    first_chunk = normalized[:chunk_size]
    rendered = render_markdownish_html(first_chunk) + signature
    chat_id = int(job_state["chat_id"])
    message_id = int(job_state.get("status_message_id") or 0)
    if message_id:
        api.edit_message_text(chat_id, message_id, rendered, parse_mode="HTML")
    else:
        job_state["status_message_id"] = api.send_message(
            chat_id,
            rendered,
            parse_mode="HTML",
        )
    job_state["status_message_text"] = first_chunk
    for start in range(chunk_size, len(normalized), chunk_size):
        api.send_message(
            int(job_state["chat_id"]),
            render_markdownish_html(normalized[start : start + chunk_size]),
            parse_mode="HTML",
        )


def keep_job_typing(
    api: TelegramAPI,
    job_state: dict[str, Any],
) -> None:
    now = time.time()
    last_typing_at = float(job_state.get("last_typing_at") or 0.0)
    if now - last_typing_at < TYPING_INTERVAL_SECONDS:
        return
    api.send_chat_action(int(job_state["chat_id"]), "typing")
    job_state["last_typing_at"] = now


def summarize_event(event: dict[str, Any]) -> str | None:
    event_type = event.get("type")
    if event_type == "job_status":
        message = str(event.get("message") or "").strip()
        if message == "Запрос принят сервером":
            return "Смотрю, что можно сделать."
        if message == "Ответ готов":
            return "Формулирую ответ."
        return message or None
    if event_type == "model_request":
        return "Думаю над ответом."
    if event_type == "tool_call":
        tool_name = str(event.get("name") or "")
        if tool_name in {"read_file", "list_files", "glob_search", "grep_text", "stat_path"}:
            return "Просматриваю файлы и контекст."
        if tool_name in {"git_status", "git_diff"}:
            return "Проверяю изменения в проекте."
        if tool_name in {"exec_command"}:
            return "Проверяю окружение и команды."
        if tool_name in {"web_search"}:
            return "Ищу нужную информацию."
        return "Проверяю детали."
    if event_type == "tool_result":
        result = event.get("result", {})
        if isinstance(result, dict) and "error" in result:
            return "Наткнулся на проблему, перепроверяю."
        return "Собрал нужные данные."
    if event_type == "error":
        return f"Ошибка: {event.get('message')}"
    if event_type == "approval_result":
        status = event.get("status")
        tool_name = event.get("tool_name")
        if status == "approved":
            return f"Получил подтверждение для {tool_name}."
        return f"Подтверждение для {tool_name} отклонено."
    return None


def format_approval_keyboard(approval_id: str) -> dict[str, Any]:
    return {
        "inline_keyboard": [
            [
                {"text": "Approve", "callback_data": f"approve:{approval_id}"},
                {"text": "Reject", "callback_data": f"reject:{approval_id}"},
            ]
        ]
    }


def format_provider_keyboard(catalog: dict[str, Any]) -> dict[str, Any]:
    rows: list[list[dict[str, str]]] = []
    row: list[dict[str, str]] = []
    for item in catalog.get("providers", []):
        name = str(item.get("name") or "")
        if not name:
            continue
        row.append({"text": name, "callback_data": f"provider:{name}"})
        if len(row) == 2:
            rows.append(row)
            row = []
    if row:
        rows.append(row)
    return {"inline_keyboard": rows}


def format_model_keyboard(provider: str, models: list[dict[str, str]]) -> dict[str, Any]:
    rows = [
        [{"text": str(item.get("name") or item.get("id") or "-"), "callback_data": f"model:{provider}:{item.get('id')}"}]
        for item in models
        if item.get("id")
    ]
    return {"inline_keyboard": rows}


def set_chat_provider(
    state: dict[str, Any],
    chat_id: int,
    provider: str | None,
    *,
    reset_model: bool = True,
) -> dict[str, Any]:
    prefs = get_chat_preferences(state, chat_id)
    prefs["provider"] = provider
    if reset_model:
        prefs["model"] = None
    return prefs


def set_chat_model(state: dict[str, Any], chat_id: int, model: str | None) -> dict[str, Any]:
    prefs = get_chat_preferences(state, chat_id)
    prefs["model"] = model
    return prefs


def format_provider_selection(
    catalog: dict[str, Any],
    selected_provider: str | None,
) -> str:
    lines = ["Выбери провайдера."]
    for item in catalog.get("providers", []):
        name = str(item.get("name") or "")
        if not name:
            continue
        marker = "•" if name == selected_provider else " "
        availability = "ready" if item.get("available") else f"unavailable: {item.get('reason') or 'unknown'}"
        lines.append(f"{marker} {name} ({availability})")
    return "\n".join(lines)


def format_model_selection(
    provider: str,
    models: list[dict[str, str]],
    selected_model: str | None,
) -> str:
    lines = [f"Выбери модель для {provider}."]
    for item in models:
        model_id = str(item.get("id") or "")
        if not model_id:
            continue
        marker = "•" if model_id == selected_model else " "
        description = str(item.get("description") or "").strip()
        suffix = f" ({description})" if description else ""
        lines.append(f"{marker} {model_id}{suffix}")
    return "\n".join(lines)


def format_approval_request(event: dict[str, Any]) -> str:
    return (
        "Нужно подтверждение инструмента.\n"
        f"approval_id: {event.get('approval_id')}\n"
        f"tool: {event.get('tool_name')}\n"
        f"args: {json.dumps(event.get('arguments', {}), ensure_ascii=False)}"
    )


def get_auth_flow(state: dict[str, Any], chat_id: int) -> dict[str, Any] | None:
    return state.setdefault("auth_flows", {}).get(str(chat_id))


def start_auth_flow(
    api: TelegramAPI,
    config: BotConfig,
    state: dict[str, Any],
    chat_id: int,
    *,
    force_new: bool = False,
) -> dict[str, Any]:
    existing = get_auth_flow(state, chat_id)
    now = time.time()
    if existing and not force_new and existing.get("expires_at", 0) > now:
        send_text_chunks(
            api,
            chat_id,
            "Авторизация Qwen OAuth ещё не завершена.\n"
            f"Открой ссылку:\n{existing['verification_uri_complete']}\n\n"
            "Бот сам проверит завершение и продолжит работу.",
        )
        return existing

    started = post_json(f"{config.server_url}/api/v1/auth/device/start", {})
    flow = {
        "flow_id": started["flow_id"],
        "user_code": started.get("user_code"),
        "verification_uri": started.get("verification_uri"),
        "verification_uri_complete": started["verification_uri_complete"],
        "expires_at": started["expires_at"],
        "interval_seconds": started.get("interval_seconds", 2),
        "next_poll_at": now + started.get("interval_seconds", 2),
        "pending_messages": existing.get("pending_messages", []) if existing else [],
    }
    state.setdefault("auth_flows", {})[str(chat_id)] = flow
    send_text_chunks(
        api,
        chat_id,
        "Нужна авторизация Qwen OAuth.\n"
        f"Открой ссылку:\n{flow['verification_uri_complete']}\n\n"
        f"user_code: {flow.get('user_code')}\n"
        "После подтверждения бот сам продолжит работу.",
    )
    return flow


def ensure_auth(api: TelegramAPI, config: BotConfig, state: dict[str, Any], chat_id: int) -> bool:
    status = get_json(f"{config.server_url}/api/v1/auth/status")
    if status.get("ready") or status.get("available_providers"):
        return True
    default_provider = status.get("default_provider")
    fallback_providers = status.get("fallback_providers") or []
    if default_provider != "qwen" and "qwen" not in fallback_providers:
        api.send_message(
            chat_id,
            "На сервере нет доступных model provider-ов. "
            f"Текущий default_provider: {default_provider}. "
            "Для GigaChat/YandexGPT нужно настроить серверные credentials.",
        )
        return False
    start_auth_flow(api, config, state, chat_id)
    return False


def enqueue_pending_message(
    state: dict[str, Any],
    chat_id: int,
    user_id: str,
    session_key: str,
    text: str,
) -> None:
    flow = get_auth_flow(state, chat_id)
    if not flow:
        return
    pending_messages = flow.setdefault("pending_messages", [])
    pending_messages.append(
        {
            "user_id": user_id,
            "session_key": session_key,
            "text": text,
            "created_at": int(time.time()),
        }
    )


def start_chat_job(
    api: TelegramAPI,
    config: BotConfig,
    state: dict[str, Any],
    chat_id: int,
    user_id: str,
    session_key: str,
    text: str,
    *,
    delayed: bool = False,
) -> None:
    session_id = state.setdefault("sessions", {}).get(session_key)
    catalog = get_provider_catalog(config)
    provider, model = get_selected_provider_and_model(state, chat_id, catalog)
    prefix = "Возвращаюсь к вашему сообщению." if delayed else "Смотрю, что можно сделать."
    status_message_id = api.send_message(chat_id, prefix)
    start_result = post_json(
        f"{config.server_url}/api/v1/chat/start",
        {
            "session_id": session_id,
            "user_id": user_id,
            "message": text,
            "provider": provider,
            "model": model,
        },
    )
    state["sessions"][session_key] = start_result["session_id"]
    state.setdefault("active_jobs", {})[start_result["job_id"]] = {
        "job_id": start_result["job_id"],
        "chat_id": chat_id,
        "user_id": user_id,
        "session_key": session_key,
        "session_id": start_result["session_id"],
        "seen_seq": 0,
        "status_message_id": status_message_id,
        "status_message_text": prefix,
        "status_body_text": prefix,
        "requested_provider": provider,
        "requested_model": model,
        "provider": start_result.get("provider") or provider,
        "model": start_result.get("model") or model,
        "fallback_notified": False,
        "last_typing_at": 0.0,
    }
    state.setdefault("chat_active_jobs", {})[str(chat_id)] = start_result["job_id"]


def enqueue_chat_message(
    state: dict[str, Any],
    chat_id: int,
    user_id: str,
    session_key: str,
    text: str,
    *,
    delayed: bool = False,
) -> int:
    queue = state.setdefault("chat_queues", {}).setdefault(str(chat_id), [])
    queue.append(
        {
            "user_id": user_id,
            "session_key": session_key,
            "text": text,
            "delayed": delayed,
            "created_at": int(time.time()),
        }
    )
    return len(queue)


def start_or_queue_chat_job(
    api: TelegramAPI,
    config: BotConfig,
    state: dict[str, Any],
    chat_id: int,
    user_id: str,
    session_key: str,
    text: str,
    *,
    delayed: bool = False,
) -> None:
    active_job_id = state.setdefault("chat_active_jobs", {}).get(str(chat_id))
    if active_job_id:
        queue_size = enqueue_chat_message(
            state,
            chat_id,
            user_id,
            session_key,
            text,
            delayed=delayed,
        )
        api.send_message(
            chat_id,
            f"В этом чате уже есть активный запрос. Сообщение поставлено в очередь: {queue_size}.",
        )
        return
    start_chat_job(
        api,
        config,
        state,
        chat_id,
        user_id,
        session_key,
        text,
        delayed=delayed,
    )


def start_next_queued_job(
    api: TelegramAPI,
    config: BotConfig,
    state: dict[str, Any],
    chat_id: int,
) -> None:
    if state.setdefault("chat_active_jobs", {}).get(str(chat_id)):
        return
    queue = state.setdefault("chat_queues", {}).get(str(chat_id)) or []
    if not queue:
        return
    next_item = queue.pop(0)
    if not queue:
        state["chat_queues"].pop(str(chat_id), None)
    start_chat_job(
        api,
        config,
        state,
        chat_id,
        next_item["user_id"],
        next_item["session_key"],
        next_item["text"],
        delayed=bool(next_item.get("delayed")),
    )


def poll_auth_flow(
    api: TelegramAPI,
    config: BotConfig,
    state: dict[str, Any],
    chat_id: int,
    *,
    force: bool = False,
) -> bool:
    flow = get_auth_flow(state, chat_id)
    if not flow:
        return False
    now = time.time()
    if flow.get("expires_at", 0) <= now:
        state["auth_flows"].pop(str(chat_id), None)
        api.send_message(chat_id, "OAuth flow истёк. Запусти /auth ещё раз.")
        return False
    if not force and now < flow.get("next_poll_at", 0):
        return False

    try:
        result = post_json(
            f"{config.server_url}/api/v1/auth/device/poll",
            {"flow_id": flow["flow_id"]},
        )
    except error.HTTPError as exc:
        body = exc.read().decode("utf-8", errors="replace")
        state["auth_flows"].pop(str(chat_id), None)
        send_text_chunks(
            api,
            chat_id,
            "Не удалось завершить OAuth flow на сервере.\n"
            f"Ответ сервера: {body}\n"
            "Запусти /auth ещё раз.",
        )
        return False

    if not result.get("done"):
        interval = result.get("interval_seconds", flow.get("interval_seconds", 2))
        flow["interval_seconds"] = interval
        flow["next_poll_at"] = now + interval
        return False

    state["auth_flows"].pop(str(chat_id), None)
    api.send_message(chat_id, "Qwen OAuth успешно настроен.")
    for item in flow.get("pending_messages", []):
        start_or_queue_chat_job(
            api,
            config,
            state,
            chat_id,
            item["user_id"],
            item["session_key"],
            item["text"],
            delayed=True,
        )
    if not flow.get("pending_messages"):
        api.send_message(chat_id, "Можно отправлять обычные сообщения.")
    return True


def process_auth_flows(
    api: TelegramAPI,
    config: BotConfig,
    state: dict[str, Any],
) -> None:
    for chat_id_raw in list(state.setdefault("auth_flows", {}).keys()):
        try:
            poll_auth_flow(api, config, state, int(chat_id_raw), force=False)
        except Exception as exc:
            print(f"auth flow poll error for chat {chat_id_raw}: {exc}")


def process_active_jobs(
    api: TelegramAPI,
    config: BotConfig,
    state: dict[str, Any],
) -> None:
    active_jobs = state.setdefault("active_jobs", {})
    pending_approvals = state.setdefault("pending_approvals", {})
    for job_id in list(active_jobs.keys()):
        job_state = active_jobs[job_id]
        keep_job_typing(api, job_state)
        poll_result = post_json(
            f"{config.server_url}/api/v1/chat/poll",
            {"job_id": job_id, "since_seq": job_state.get("seen_seq", 0)},
        )
        for event in poll_result.get("events", []):
            seq = int(event.get("seq", 0))
            job_state["seen_seq"] = max(job_state.get("seen_seq", 0), seq)
            if event.get("type") == "approval_request":
                pending_approvals[str(job_state["chat_id"])] = {
                    "approval_id": event["approval_id"],
                    "job_id": job_id,
                }
                api.send_message(
                    int(job_state["chat_id"]),
                    format_approval_request(event),
                    reply_markup=format_approval_keyboard(str(event["approval_id"])),
                )
                continue
            if event.get("type") == "model_request":
                selection_reason = str(event.get("selection_reason") or "")
                if (
                    "fell back to" in selection_reason
                    and not job_state.get("fallback_notified")
                ):
                    requested_provider = job_state.get("requested_provider") or "unknown"
                    api.send_message(
                        int(job_state["chat_id"]),
                        "Выбранный провайдер не ответил, поэтому продолжаю через запасной вариант.\n"
                        f"Изначально был выбран: {requested_provider}",
                    )
                    job_state["fallback_notified"] = True
                if event.get("provider"):
                    job_state["provider"] = event.get("provider")
                if event.get("model"):
                    job_state["model"] = event.get("model")
            summary = summarize_event(event)
            if summary and summary != job_state.get("status_body_text"):
                update_status_message(api, job_state, summary)

        status = poll_result.get("status")
        if status == "completed":
            state["sessions"][job_state["session_key"]] = poll_result["session_id"]
            set_final_message(
                api,
                job_state,
                poll_result.get("answer") or "Пустой ответ от модели.",
            )
            active_jobs.pop(job_id, None)
            state.setdefault("chat_active_jobs", {}).pop(str(job_state["chat_id"]), None)
            pending = pending_approvals.get(str(job_state["chat_id"]))
            if pending and pending.get("job_id") == job_id:
                pending_approvals.pop(str(job_state["chat_id"]), None)
            start_next_queued_job(api, config, state, int(job_state["chat_id"]))
        elif status == "failed":
            set_final_message(
                api,
                job_state,
                f"Job завершился с ошибкой: {poll_result.get('error')}",
            )
            active_jobs.pop(job_id, None)
            state.setdefault("chat_active_jobs", {}).pop(str(job_state["chat_id"]), None)
            pending = pending_approvals.get(str(job_state["chat_id"]))
            if pending and pending.get("job_id") == job_id:
                pending_approvals.pop(str(job_state["chat_id"]), None)
            start_next_queued_job(api, config, state, int(job_state["chat_id"]))
        elif status == "canceled":
            set_final_message(
                api,
                job_state,
                f"Job отменён: {poll_result.get('error') or 'Canceled by operator'}",
            )
            active_jobs.pop(job_id, None)
            state.setdefault("chat_active_jobs", {}).pop(str(job_state["chat_id"]), None)
            pending = pending_approvals.get(str(job_state["chat_id"]))
            if pending and pending.get("job_id") == job_id:
                pending_approvals.pop(str(job_state["chat_id"]), None)
            start_next_queued_job(api, config, state, int(job_state["chat_id"]))


def cancel_chat_work(
    api: TelegramAPI,
    config: BotConfig,
    state: dict[str, Any],
    chat_id: int,
    actor: str,
    *,
    clear_queue: bool,
) -> bool:
    canceled = False
    active_job_id = state.setdefault("chat_active_jobs", {}).get(str(chat_id))
    if active_job_id:
        post_json(
            f"{config.server_url}/api/v1/chat/cancel",
            {
                "job_id": active_job_id,
                "actor": actor,
                "reason": "Canceled from Telegram bot",
            },
        )
        canceled = True
    if clear_queue:
        queue = state.setdefault("chat_queues", {}).pop(str(chat_id), [])
        canceled = canceled or bool(queue)
    pending = state.setdefault("pending_approvals", {}).get(str(chat_id))
    if pending and pending.get("job_id") == active_job_id:
        state["pending_approvals"].pop(str(chat_id), None)
    return canceled


def handle_message(api: TelegramAPI, config: BotConfig, state: dict[str, Any], message: dict[str, Any]) -> None:
    chat_id = message["chat"]["id"]
    user_id = str(message.get("from", {}).get("id", chat_id))
    text = (message.get("text") or "").strip()
    if not text:
        api.send_message(chat_id, "Поддерживаются только текстовые сообщения.")
        return

    session_key = f"{chat_id}:{user_id}"
    session_id = state.setdefault("sessions", {}).get(session_key)
    state.setdefault("auth_flows", {})

    if text == "/start":
        api.send_message(
            chat_id,
            "new-qwen bot готов.\nКоманды доступны через Telegram menu: /help, /auth, /status, /provider, /model, /session, /cancel, /clear.",
        )
        return

    if text == "/help":
        api.send_message(
            chat_id,
            "Команды:\n"
            "/auth - начать Qwen OAuth\n"
            "/auth_check [flow_id] - проверить авторизацию\n"
            "/status - статус OAuth и сервера\n"
            "/provider [name] - выбрать провайдера\n"
            "/model [id] - выбрать модель\n"
            "/session - показать текущую сессию\n"
            "/cancel - отменить активный запрос и очистить очередь\n"
            "/approve [approval_id] - подтвердить инструмент\n"
            "/reject [approval_id] - отклонить инструмент\n"
            "/clear - очистить контекст",
        )
        return

    if text.startswith("/approve") or text.startswith("/reject"):
        parts = text.split(maxsplit=1)
        approval = state.setdefault("pending_approvals", {}).get(str(chat_id))
        approval_id = parts[1] if len(parts) == 2 else approval.get("approval_id") if approval else None
        if not approval_id:
            api.send_message(chat_id, "Нет pending approval для этого чата.")
            return
        response = post_json(
            f"{config.server_url}/api/v1/approval/respond",
            {
                "approval_id": approval_id,
                "approved": text.startswith("/approve"),
                "actor": user_id,
            },
        )
        if response.get("status") != "pending":
            state["pending_approvals"].pop(str(chat_id), None)
        api.send_message(
            chat_id,
            f"Approval {approval_id}: {response.get('status')}",
        )
        return

    if text == "/auth":
        start_auth_flow(api, config, state, chat_id, force_new=True)
        return

    if text.startswith("/auth_check"):
        parts = text.split(maxsplit=1)
        if len(parts) == 2:
            flow = get_auth_flow(state, chat_id)
            if flow:
                flow["flow_id"] = parts[1]
        flow = get_auth_flow(state, chat_id)
        if not flow:
            api.send_message(chat_id, "Нет активного flow_id. Сначала вызови /auth.")
            return
        if not poll_auth_flow(api, config, state, chat_id, force=True):
            api.send_message(chat_id, "Авторизация ещё не завершена. Повторите команду через пару секунд.")
        return

    if text == "/status":
        status = get_json(f"{config.server_url}/api/v1/auth/status")
        catalog = get_provider_catalog(config)
        queue_size = len(state.setdefault("chat_queues", {}).get(str(chat_id), []))
        active_job = state.setdefault("chat_active_jobs", {}).get(str(chat_id))
        provider, model = get_selected_provider_and_model(state, chat_id, catalog)
        providers_info = "\n".join(
            [
                f"  - {item['name']}: model={item.get('model')}, available={item.get('available')}"
                for item in catalog.get("providers", [])
            ]
        ) or "  Нет доступных провайдеров"
        send_text_chunks(
            api,
            chat_id,
            "Сервер доступен.\n"
            f"OAuth: {'configured' if status.get('authenticated') else 'not configured'}\n"
            f"ready: {status.get('ready')}\n"
            f"available_providers: {', '.join(status.get('available_providers') or []) or '-'}\n"
            f"default_provider: {status.get('default_provider')}\n"
            f"fallback_providers: {', '.join(status.get('fallback_providers') or []) or '-'}\n"
            f"selected_provider: {provider}\n"
            f"selected_model: {model}\n"
            f"resource_url: {status.get('resource_url')}\n"
            f"expires_at: {status.get('expires_at')}\n"
            f"tool_policy: {status.get('tool_policy')}\n"
            f"Провайдеры и модели:\n{providers_info}\n"
            f"active_job: {active_job}\n"
            f"queued_messages: {queue_size}",
        )
        return

    if text.startswith("/provider"):
        catalog = get_provider_catalog(config)
        parts = text.split(maxsplit=1)
        if len(parts) == 1:
            provider, _ = get_selected_provider_and_model(state, chat_id, catalog)
            api.send_message(
                chat_id,
                format_provider_selection(catalog, provider),
                reply_markup=format_provider_keyboard(catalog),
            )
            return
        provider_name = parts[1].strip()
        provider_names = {str(item.get("name") or "") for item in catalog.get("providers", [])}
        if provider_name not in provider_names:
            api.send_message(chat_id, f"Неизвестный provider: {provider_name}")
            return
        set_chat_provider(state, chat_id, provider_name, reset_model=True)
        _, model = get_selected_provider_and_model(state, chat_id, catalog)
        api.send_message(chat_id, f"Выбран provider: {provider_name}\nmodel: {model or '-'}")
        return

    if text.startswith("/model"):
        catalog = get_provider_catalog(config)
        provider, selected_model = get_selected_provider_and_model(state, chat_id, catalog)
        provider_map = {str(item.get("name") or ""): item for item in catalog.get("providers", [])}
        provider_info = provider_map.get(provider or "")
        models = provider_info.get("models", []) if provider_info else []
        parts = text.split(maxsplit=1)
        if len(parts) == 1:
            api.send_message(
                chat_id,
                format_model_selection(provider or "-", models, selected_model),
                reply_markup=format_model_keyboard(provider or "-", models),
            )
            return
        model_id = parts[1].strip()
        valid_model_ids = {str(item.get("id") or "") for item in models}
        if model_id not in valid_model_ids:
            api.send_message(chat_id, f"Неизвестная модель для {provider}: {model_id}")
            return
        set_chat_model(state, chat_id, model_id)
        api.send_message(chat_id, f"Выбрана модель: {model_id}\nprovider: {provider}")
        return

    if text == "/cancel":
        canceled = cancel_chat_work(
            api,
            config,
            state,
            chat_id,
            user_id,
            clear_queue=True,
        )
        if canceled:
            api.send_message(chat_id, "Активный job отменён, очередь чата очищена.")
        else:
            api.send_message(chat_id, "Для этого чата нет активных или queued jobs.")
        return

    if text == "/session":
        if not session_id:
            api.send_message(chat_id, "У этого чата ещё нет активной сессии.")
            return
        session = post_json(
            f"{config.server_url}/api/v1/session/get",
            {"session_id": session_id},
        )
        send_text_chunks(
            api,
            chat_id,
            "session_id: {session_id}\nmessages: {count}\nlast_answer: {last_answer}".format(
                session_id=session_id,
                count=len(session.get("messages", [])),
                last_answer=session.get("last_answer") or "-",
            ),
        )
        return

    if text == "/clear":
        cancel_chat_work(
            api,
            config,
            state,
            chat_id,
            user_id,
            clear_queue=True,
        )
        if session_id:
            post_json(f"{config.server_url}/api/v1/session/clear", {"session_id": session_id})
            state["sessions"].pop(session_key, None)
        api.send_message(chat_id, "Контекст сессии очищен.")
        return

    if not ensure_auth(api, config, state, chat_id):
        enqueue_pending_message(state, chat_id, user_id, session_key, text)
        api.send_message(chat_id, "Сообщение поставлено в очередь до завершения авторизации.")
        return

    start_or_queue_chat_job(api, config, state, chat_id, user_id, session_key, text)


def handle_callback_query(
    api: TelegramAPI,
    config: BotConfig,
    state: dict[str, Any],
    callback_query: dict[str, Any],
) -> None:
    callback_query_id = str(callback_query.get("id") or "")
    data = str(callback_query.get("data") or "")
    message = callback_query.get("message") or {}
    chat = message.get("chat") or {}
    chat_id = int(chat.get("id"))
    message_id = int(message.get("message_id"))
    actor = str((callback_query.get("from") or {}).get("id") or chat_id)
    if ":" not in data:
        api.answer_callback_query(callback_query_id, "Неизвестное действие")
        return

    action, approval_id = data.split(":", 1)
    if action not in {"approve", "reject"}:
        if action == "provider":
            catalog = get_provider_catalog(config)
            provider_names = {str(item.get("name") or "") for item in catalog.get("providers", [])}
            if approval_id not in provider_names:
                api.answer_callback_query(callback_query_id, "Неизвестный провайдер")
                return
            set_chat_provider(state, chat_id, approval_id, reset_model=True)
            provider, model = get_selected_provider_and_model(state, chat_id, catalog)
            api.edit_message_text(
                chat_id,
                message_id,
                f"Выбран provider: {provider}\nmodel: {model or '-'}",
                reply_markup={"inline_keyboard": []},
            )
            api.answer_callback_query(callback_query_id, "Провайдер переключен")
            return
        if action == "model":
            provider, model_id = approval_id.split(":", 1) if ":" in approval_id else ("", "")
            catalog = get_provider_catalog(config)
            provider_map = {str(item.get("name") or ""): item for item in catalog.get("providers", [])}
            provider_info = provider_map.get(provider)
            model_ids = {
                str(item.get("id") or "")
                for item in (provider_info.get("models", []) if provider_info else [])
            }
            if model_id not in model_ids:
                api.answer_callback_query(callback_query_id, "Неизвестная модель")
                return
            set_chat_provider(state, chat_id, provider, reset_model=False)
            set_chat_model(state, chat_id, model_id)
            api.edit_message_text(
                chat_id,
                message_id,
                f"Выбрана модель: {model_id}\nprovider: {provider}",
                reply_markup={"inline_keyboard": []},
            )
            api.answer_callback_query(callback_query_id, "Модель переключена")
            return
        api.answer_callback_query(callback_query_id, "Неизвестное действие")
        return

    response = post_json(
        f"{config.server_url}/api/v1/approval/respond",
        {
            "approval_id": approval_id,
            "approved": action == "approve",
            "actor": actor,
        },
    )
    status = str(response.get("status") or "unknown")
    pending = state.setdefault("pending_approvals", {}).get(str(chat_id))
    if response.get("status") != "pending":
        state["pending_approvals"].pop(str(chat_id), None)

    api.edit_message_text(
        chat_id,
        message_id,
        f"Approval {approval_id}: {status}",
        reply_markup={"inline_keyboard": []},
    )
    api.answer_callback_query(
        callback_query_id,
        "Подтверждено" if action == "approve" else "Отклонено",
    )


def main() -> None:
    config = BotConfig.load()
    api = TelegramAPI(config.token, proxy_url=config.proxy_url)
    state = load_state()
    ensure_bot_commands(api, state)
    save_state(state)
    print("new-qwen bot polling started")
    while True:
        try:
            process_auth_flows(api, config, state)
            process_active_jobs(api, config, state)
            timeout = config.poll_timeout
            if state.get("active_jobs"):
                timeout = min(timeout, 3)
            updates = api.get_updates(state.get("offset"), timeout)
            for update in updates:
                state["offset"] = update["update_id"] + 1
                message = update.get("message")
                if message:
                    handle_message(api, config, state, message)
                callback_query = update.get("callback_query")
                if callback_query:
                    handle_callback_query(api, config, state, callback_query)
                save_state(state)
            save_state(state)
        except Exception as exc:
            print(f"bot loop error: {exc}")
            time.sleep(3)


if __name__ == "__main__":
    main()