"""Load intern catalog from config.yaml."""

from __future__ import annotations

from pathlib import Path
from typing import Any

import yaml

from .interns.base import Intern
from .interns.bulk_text_read import BulkTextRead
from .interns.grep_audit import GrepAudit
from .interns.repo_read import RepoRead
from .interns.transcript_distill import TranscriptDistill

# Explicit registry — MVP choice (see design spec open questions).
INTERN_CLASSES: dict[str, type[Intern]] = {
    "bulk_text_read": BulkTextRead,
    "grep_audit": GrepAudit,
    "repo_read": RepoRead,
    "transcript_distill": TranscriptDistill,
}


def load_config(config_path: Path) -> dict[str, Any]:
    with open(config_path, encoding="utf-8") as f:
        return yaml.safe_load(f)


def load_interns(config: dict[str, Any], client: Any = None, safety: Any = None) -> list[Intern]:
    """Instantiate interns from config, wiring shared client and safety."""
    interns = []
    for intern_id, intern_cfg in config.get("interns", {}).items():
        cls = INTERN_CLASSES.get(intern_id)
        if cls is None:
            continue
        interns.append(cls(config=intern_cfg, client=client, safety=safety))
    return interns