import yaml
import time
from pathlib import Path

BASE_DIR = Path(__file__).resolve().parent.parent


def load_schema(name: str) -> dict:
    """
    Load schema YAML từ app/schemas/<name>.yaml
    """
    path = BASE_DIR / "schemas" / f"{name}.yaml"
    with open(path, "r", encoding="utf-8") as f:
        return yaml.safe_load(f)


def render_response(schema: dict, data):
    schema_type = schema.get("type")

    # ---------- ARRAY ----------
    if schema_type == "array":
        if not isinstance(data, list):
            return []

        item_schema = schema.get("item", {})
        return [
            render_response(
                {
                    "type": "object",
                    "fields": item_schema.get("fields", {})
                },
                item
            )
            for item in data
        ]

    # ---------- OBJECT ----------
    if schema_type == "object":
        fields = schema.get("fields", {})
        result = {}

        for key, field_cfg in fields.items():
            if key in data:
                result[key] = data[key]

        return result

    # ---------- FALLBACK ----------
    return data