from __future__ import annotations

import logging
import os
from pathlib import Path

from yuxi.channel.extensions.nextcloud_talk.config_schema import NextcloudTalkConfig
from yuxi.channel.extensions.nextcloud_talk.types import ResolvedNextcloudTalkAccount

logger = logging.getLogger(__name__)


def _read_secret_file(file_path: str) -> str:
    p = Path(file_path)
    if not p.is_file():
        logger.warning("Nextcloud Talk: secret file not found: %s", file_path)
        return ""
    if p.is_symlink():
        logger.warning("Nextcloud Talk: secret file is a symlink, refusing to read: %s", file_path)
        return ""
    try:
        return p.read_text(encoding="utf-8").strip()
    except Exception as e:
        logger.warning("Nextcloud Talk: failed to read secret file %s: %s", file_path, e)
        return ""


def _resolve_bot_secret(cfg: NextcloudTalkConfig, account_id: str) -> tuple[str, str]:
    if account_id == "default":
        env_val = os.environ.get("NEXTCLOUD_TALK_BOT_SECRET")
        if env_val:
            return env_val, "env"
    if cfg.bot_secret_file:
        content = _read_secret_file(cfg.bot_secret_file)
        if content:
            return content, "file"
    if cfg.bot_secret:
        return cfg.bot_secret, "config"
    return "", "none"


def _resolve_api_password(cfg: NextcloudTalkConfig) -> tuple[str, str]:
    if cfg.api_password:
        return cfg.api_password, "config"
    if cfg.api_password_file:
        content = _read_secret_file(cfg.api_password_file)
        if content:
            return content, "file"
    return "", "none"


def resolve_nextcloud_talk_account(
    cfg: NextcloudTalkConfig, account_id: str = "default"
) -> ResolvedNextcloudTalkAccount:
    bot_secret, secret_source = _resolve_bot_secret(cfg, account_id)
    api_password, api_password_source = _resolve_api_password(cfg)

    configured = bool(cfg.base_url and bot_secret)

    return ResolvedNextcloudTalkAccount(
        account_id=account_id,
        enabled=cfg.enabled,
        name=cfg.name or account_id,
        configured=configured,
        base_url=cfg.base_url,
        bot_secret=bot_secret,
        secret_source=secret_source,
        api_user=cfg.api_user,
        api_password=api_password,
        api_password_source=api_password_source,
    )


def list_nextcloud_talk_account_ids(cfg: NextcloudTalkConfig) -> list[str]:
    return ["default"]