#  Copyright (c) 2015-2018 Cisco Systems, Inc.
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"""Schema v3 Validation Module."""

from __future__ import annotations

import json
import logging

from pathlib import Path
from typing import TYPE_CHECKING

from jsonschema import validate as jsonschema_validate
from jsonschema.exceptions import ValidationError

from molecule import api
from molecule.data import __file__ as data_module


if TYPE_CHECKING:
    from molecule.types import ConfigData


LOG = logging.getLogger(__name__)


def validate(c: ConfigData) -> list[str]:
    """Perform schema validation.

    Args:
        c: Dictionary of configuration data.

    Returns:
        Any errors generated by the schema validation.
    """
    result = []
    schemas = []

    schema_files = [str(Path(data_module).parent / "molecule.json")]

    # Only add driver schema if driver section exists
    if "driver" in c and "name" in c["driver"]:
        driver_name = c["driver"]["name"]

        driver_schema_file = None
        if driver_name in api.drivers():
            driver_schema_file = api.drivers()[driver_name].schema_file()

        if driver_schema_file is None:
            msg = f"Driver {driver_name} does not provide a schema."
            LOG.warning(msg)
        elif not Path(driver_schema_file).exists():
            msg = f"Schema {driver_schema_file} for driver {driver_name} not found."
            LOG.warning(msg)
        else:
            schema_files.append(driver_schema_file)

    for schema_file in schema_files:
        with Path(schema_file).open(encoding="utf-8") as f:
            schema = json.load(f)
        schemas.append(schema)

    try:
        for schema in schemas:
            jsonschema_validate(c, schema)
    except ValidationError as exc:
        # handle validation error for driver name
        if exc.json_path == "$.driver.name" and exc.message.endswith(
            (
                "is not of type 'string'",
                "is not valid under any of the given schemas",
            ),
        ):
            wrong_driver_name = str(exc.message.split()[0])
            if isinstance(exc.schema, dict):
                driver_name_err_msg = exc.schema["messages"]["anyOf"]
            else:
                driver_name_err_msg = "is not a valid driver name"
            result.append(f"{wrong_driver_name} {driver_name_err_msg}")
        else:
            result.append(exc.message)

    return result
