from pathlib import Path


def get_hook_script() -> str:
    return """#!/bin/bash
# Local AI Commit Reviewer - Pre-commit Hook
# Automatically reviews staged changes before committing

set -e

# Allow bypass with --no-verify
if [ "$1" = "--no-verify" ]; then
    exit 0
fi

# Get the directory where this script is located
SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"

# Change to repository root
cd "$SCRIPT_DIR/../.."

# Run the AI commit reviewer
python -m aicr review --hook --strictness balanced || exit 1
"""


def install_pre_commit_hook(
    repo_path: Path,
    content: str | None = None,
    force: bool = False
) -> bool:
    hooks_dir = repo_path / ".git" / "hooks"
    hooks_dir.mkdir(parents=True, exist_ok=True)

    hook_path = hooks_dir / "pre-commit"

    if hook_path.exists() and not force:
        return False

    if content is None:
        content = get_hook_script()

    try:
        hook_path.write_text(content)
        hook_path.chmod(0o755)
        return True
    except OSError:
        return False


def check_hook_installed(repo_path: Path) -> bool:
    hook_path = repo_path / ".git" / "hooks" / "pre-commit"
    if not hook_path.exists():
        return False

    content = hook_path.read_text()
    return "aicr" in content or "local-ai-commit-reviewer" in content


def uninstall_hook(repo_path: Path) -> bool:
    hook_path = repo_path / ".git" / "hooks" / "pre-commit"
    if not hook_path.exists():
        return True

    try:
        hook_path.unlink()
        return True
    except OSError:
        return False