"""Validators for plugin configuration and project artifacts."""
import os
import yaml
from typing import Dict, Any, List


def validate_config(config_path: str) -> Dict[str, Any]:
    """Validate default_config.yaml and return errors."""
    errors = []
    if not os.path.exists(config_path):
        return {"valid": False, "errors": ["config file not found"]}
    try:
        with open(config_path, "r") as f:
            config = yaml.safe_load(f)
        if not isinstance(config, dict):
            errors.append("config is not a mapping")
    except Exception as e:
        errors.append(f"YAML parse error: {e}")
    return {"valid": len(errors) == 0, "errors": errors}


def validate_project_init(project_root: str) -> List[str]:
    """Validate that a project has been properly initialized."""
    required_dirs = [
        ".a0",
        "specs/current",
        "docs",
        "deploy",
    ]
    missing = []
    for d in required_dirs:
        if not os.path.isdir(os.path.join(project_root, d)):
            missing.append(d)
    return missing