"""Runtime bootstrap for the knowtation MCP namespace (§KD-5a.A(c))."""

from __future__ import annotations

import logging
import pathlib

from muse.plugins.knowtation.attestation import (
    load_air_config,
    register_knowtation_attestation_provider,
)
from muse.plugins.knowtation.icp_push_hook import register_knowtation_icp_push_hook

logger = logging.getLogger(__name__)

_DOMAIN_IGNORE_BLOCK = """\
[domain.knowtation]
patterns = [
    "data/",
    ".obsidian/",
]
"""


def ensure_knowtation_museignore(root: pathlib.Path) -> None:
    """Ensure ``.museignore`` excludes ``data/`` and ``.obsidian/`` (§KD-5a.A(d))."""
    ignore_path = root / ".museignore"
    if ignore_path.exists():
        text = ignore_path.read_text(encoding="utf-8")
        if "[domain.knowtation]" in text and "data/" in text:
            return
        if "[domain.knowtation]" not in text:
            merged = text.rstrip() + "\n\n" + _DOMAIN_IGNORE_BLOCK
            ignore_path.write_text(merged, encoding="utf-8")
        return
    ignore_path.write_text(
        "# Muse ignore patterns\n\n" + _DOMAIN_IGNORE_BLOCK,
        encoding="utf-8",
    )


def bootstrap_knowtation_mcp(root: pathlib.Path) -> None:
    """Register attestation + ICP push hook at MCP server start (not ``__init__.py``).

    Idempotent — safe to call on every server initialisation when the active
    domain is ``knowtation``.

    Args:
        root: Muse repository root (contains ``.muse/``).
    """
    ensure_knowtation_museignore(root)
    cfg = load_air_config(root / ".muse" / "air.yaml")
    register_knowtation_attestation_provider(cfg)
    register_knowtation_icp_push_hook()
    logger.debug("knowtation MCP bootstrap: attestation + ICP push hook registered")


__all__ = ["bootstrap_knowtation_mcp", "ensure_knowtation_museignore"]