from __future__ import annotations

from dataclasses import dataclass, field
from pathlib import Path

import yaml


@dataclass(slots=True)
class RepoReviewConfig:
    enabled: bool = True
    default_mode: str = "summary"
    max_diff_bytes: int = 200000
    include_tests: bool = True
    focus: list[str] = field(default_factory=lambda: ["correctness", "security", "maintainability"])
    ignore: list[str] = field(default_factory=list)
    allow_fix: bool = False


def load_repo_review_config(repo_root: Path) -> RepoReviewConfig:
    path = repo_root / ".codex-review.yml"
    if not path.exists():
        return RepoReviewConfig()
    raw = yaml.safe_load(path.read_text(encoding="utf-8")) or {}
    review = raw.get("review", {}) or {}
    commands = raw.get("commands", {}) or {}
    return RepoReviewConfig(
        enabled=bool(raw.get("enabled", True)),
        default_mode=str(review.get("default_mode", "summary")),
        max_diff_bytes=int(review.get("max_diff_bytes", 200000)),
        include_tests=bool(review.get("include_tests", True)),
        focus=list(review.get("focus", ["correctness", "security", "maintainability"])),
        ignore=list(raw.get("ignore", [])),
        allow_fix=bool(commands.get("allow_fix", False)),
    )