"""Tests for config validation."""

import pytest

from config import (
    AppConfig,
    BatchSettings,
    Environment,
    MySQLSettings,
    SAPSettings,
    validate_config,
)


def _make_config() -> AppConfig:
    """Build a default (dev) AppConfig instance."""
    cfg = AppConfig()
    cfg.env = Environment.DEV
    return cfg


def test_validate_config_passes_for_defaults() -> None:
    """Test that the default dev configuration is valid."""
    validate_config(_make_config())


def test_validate_config_rejects_batch_size_out_of_range() -> None:
    """Test that MAX_BATCH_SIZE outside [50, 500] fails validation."""
    cfg = _make_config()
    cfg.batch = BatchSettings(MAX_BATCH_SIZE=49)

    with pytest.raises(ValueError, match='MAX_BATCH_SIZE'):
        validate_config(cfg)

    cfg.batch = BatchSettings(MAX_BATCH_SIZE=501)

    with pytest.raises(ValueError, match='MAX_BATCH_SIZE'):
        validate_config(cfg)


def test_validate_config_rejects_stale_sync_minutes_out_of_range() -> None:
    """Test that STALE_SYNC_MINUTES outside [1, 240] fails validation."""
    cfg = _make_config()
    cfg.batch = BatchSettings(STALE_SYNC_MINUTES=0)

    with pytest.raises(ValueError, match='STALE_SYNC_MINUTES'):
        validate_config(cfg)

    cfg.batch = BatchSettings(STALE_SYNC_MINUTES=241)

    with pytest.raises(ValueError, match='STALE_SYNC_MINUTES'):
        validate_config(cfg)


def test_validate_config_rejects_non_https_sap_api() -> None:
    """Test that a non-https SAP API URL fails validation."""
    cfg = _make_config()
    cfg.sap = SAPSettings(API='http://connect-tsme.sonymusic.com')

    with pytest.raises(ValueError, match='sap.API'):
        validate_config(cfg)


def test_validate_config_requires_mysql_credentials_in_managed_env() -> None:
    """Test that managed environments require MySQL host, user, and password."""
    cfg = _make_config()
    cfg.env = Environment.QA
    cfg.mysql = MySQLSettings(host='', user='', password='')

    with pytest.raises(ValueError) as exc_info:
        validate_config(cfg)

    message = str(exc_info.value)
    assert 'mysql.host' in message
    assert 'mysql.user' in message
    assert 'mysql.password' in message


def test_validate_config_collects_multiple_errors() -> None:
    """Test that all validation errors are reported together."""
    cfg = _make_config()
    cfg.batch = BatchSettings(MAX_BATCH_SIZE=0, STALE_SYNC_MINUTES=0)

    with pytest.raises(ValueError) as exc_info:
        validate_config(cfg)

    message = str(exc_info.value)
    assert 'MAX_BATCH_SIZE' in message
    assert 'STALE_SYNC_MINUTES' in message