CLI

"""CLI for skills-ref library."""

import json import sys from pathlib import Path

import click

from .errors import SkillError from .parser import read_properties from .prompt import to_prompt from .validator import validate

def _is_skill_md_file(path: Path) -> bool: """Check if path points directly to a SKILL.md or skill.md file.""" return path.is_file() and path.name.lower() == "skill.md"

@click.group() @click.version_option() def main(): """Reference library for Agent Skills.""" pass

@main.command("validate") @click.argument("skill_path", type=click.Path(exists=True, path_type=Path)) def validate_cmd(skill_path: Path): """Validate a skill directory.

Checks that the skill has a valid SKILL.md with proper frontmatter,
correct naming conventions, and required fields.

Exit codes:
    0: Valid skill
    1: Validation errors found
"""
if _is_skill_md_file(skill_path):
    skill_path = skill_path.parent

errors = validate(skill_path)

if errors:
    click.echo(f"Validation failed for {skill_path}:", err=True)
    for error in errors:
        click.echo(f"  - {error}", err=True)
    sys.exit(1)
else:
    click.echo(f"Valid skill: {skill_path}")

@main.command("read-properties") @click.argument("skill_path", type=click.Path(exists=True, path_type=Path)) def read_properties_cmd(skill_path: Path): """Read and print skill properties as JSON.

Parses the YAML frontmatter from SKILL.md and outputs the
properties as JSON.

Exit codes:
    0: Success
    1: Parse error
"""
try:
    if _is_skill_md_file(skill_path):
        skill_path = skill_path.parent

    props = read_properties(skill_path)
    click.echo(json.dumps(props.to_dict(), indent=2))
except SkillError as e:
    click.echo(f"Error: {e}", err=True)
    sys.exit(1)

@main.command("to-prompt") @click.argument( "skill_paths", type=click.Path(exists=True, path_type=Path), nargs=-1, required=True ) def to_prompt_cmd(skill_paths: tuple[Path, ...]): """Generate XML for agent prompts.

Accepts one or more skill directories.

Exit codes:
    0: Success
    1: Error
"""
try:
    resolved_paths = []
    for skill_path in skill_paths:
        if _is_skill_md_file(skill_path):
            resolved_paths.append(skill_path.parent)
        else:
            resolved_paths.append(skill_path)

    output = to_prompt(resolved_paths)
    click.echo(output)
except SkillError as e:
    click.echo(f"Error: {e}", err=True)
    sys.exit(1)

if name == "main": main()