from django.conf import settings
from django.core import checks

from anymail.utils import get_anymail_setting


def check_deprecated_settings(app_configs, **kwargs):
    errors = []

    anymail_settings = getattr(settings, "ANYMAIL", {})

    # anymail.W001: reserved [was deprecation warning that became anymail.E001]

    # anymail.E001: rename WEBHOOK_AUTHORIZATION to WEBHOOK_SECRET
    if "WEBHOOK_AUTHORIZATION" in anymail_settings:
        errors.append(checks.Error(
            "The ANYMAIL setting 'WEBHOOK_AUTHORIZATION' has been renamed 'WEBHOOK_SECRET' to improve security.",
            hint="You must update your settings.py.",
            id="anymail.E001",
        ))
    if hasattr(settings, "ANYMAIL_WEBHOOK_AUTHORIZATION"):
        errors.append(checks.Error(
            "The ANYMAIL_WEBHOOK_AUTHORIZATION setting has been renamed ANYMAIL_WEBHOOK_SECRET to improve security.",
            hint="You must update your settings.py.",
            id="anymail.E001",
        ))

    return errors


def check_insecure_settings(app_configs, **kwargs):
    errors = []

    # anymail.W002: DEBUG_API_REQUESTS can leak private information
    if get_anymail_setting("debug_api_requests", default=False) and not settings.DEBUG:
        errors.append(checks.Warning(
            "You have enabled the ANYMAIL setting DEBUG_API_REQUESTS, which can "
            "leak API keys and other sensitive data into logs or the console.",
            hint="You should not use DEBUG_API_REQUESTS in production deployment.",
            id="anymail.W002",
        ))

    return errors