"""Demo-console helpers (#12, ADR-005): scripted personas, reset, connect links, outbox access.

Synthetic data only. Scenario files live in `data/synthetic/<slug>.jsonl` (#18); a patient is a scripted persona
when the transliterated first word of the display name equals the slug ("Андрей С." → `andrey.jsonl`).
"""

import inspect
import logging
from importlib import import_module, util
from pathlib import Path

from app.config import get_settings
from app.integrations.base import MemoryOutbox, Outbox, integrations

log = logging.getLogger(__name__)

SEED_MODULE = "scripts.seed_demo"
CONSOLE_PATH = "/console"

_TRANSLIT = {
    "а": "a", "б": "b", "в": "v", "г": "g", "д": "d", "е": "e", "ё": "e", "ж": "zh", "з": "z", "и": "i",
    "й": "y", "к": "k", "л": "l", "м": "m", "н": "n", "о": "o", "п": "p", "р": "r", "с": "s", "т": "t",
    "у": "u", "ф": "f", "х": "kh", "ц": "ts", "ч": "ch", "ш": "sh", "щ": "shch", "ъ": "", "ы": "y", "ь": "",
    "э": "e", "ю": "yu", "я": "ya",
}  # fmt: skip


def persona_slug(display_name: str) -> str:
    first = (display_name.split() or [""])[0].lower()
    return "".join(_TRANSLIT.get(ch, ch if ch.isascii() and ch.isalnum() else "") for ch in first)


def scenario_files(data_dir: Path | None = None) -> dict[str, str]:
    """slug → scenario path relative to the project root, e.g. {"andrey": "data/synthetic/andrey.jsonl"}."""
    root = data_dir or get_settings().data_dir
    folder = root / "synthetic"
    if not folder.is_dir():
        return {}
    return {f.stem: f"data/synthetic/{f.name}" for f in sorted(folder.glob("*.jsonl"))}


async def bot_username() -> str | None:
    """Username of the running Telegram bot (deep links); None when the bot is not started (no TG_BOT_TOKEN)."""
    from app.channels import telegram

    bot = getattr(telegram, "_bot", None)
    if bot is None:
        return None
    try:
        me = await bot.me()  # aiogram caches getMe
    except Exception as exc:  # noqa: BLE001 — network / auth errors: fall back to the web console link
        log.warning("bot username unavailable error=%s", type(exc).__name__)
        return None
    return me.username or None


async def deep_link(code: str) -> str:
    username = await bot_username()
    return f"https://t.me/{username}?start={code}" if username else f"{CONSOLE_PATH}?code={code}"


def memory_outbox() -> MemoryOutbox | None:
    """The in-memory outbox polled by the web console, also when wrapped (Telegram keeps it as `fallback`)."""
    box: Outbox | None = integrations.outbox
    for _ in range(5):
        if isinstance(box, MemoryOutbox):
            return box
        box = getattr(box, "fallback", None)
    return None


async def reset_demo() -> bool:
    """Clock reset is done by the caller; re-seed via `scripts.seed_demo.reset()` (#18) when it exists."""
    box = memory_outbox()
    if box is not None:
        box._q.clear()
    try:
        spec = util.find_spec(SEED_MODULE)
    except ModuleNotFoundError:  # no `scripts` package on the path (e.g. installed app without scripts/)
        spec = None
    if spec is None:
        return False
    reset = getattr(import_module(SEED_MODULE), "reset", None)
    if reset is None:
        return False
    result = reset()
    if inspect.isawaitable(result):
        await result
    return True