from __future__ import unicode_literals

from django.conf import settings
from django.core.exceptions import ImproperlyConfigured


if not (getattr(settings, "SITE_ID") and
        "django.contrib.sites" in settings.INSTALLED_APPS):
    raise ImproperlyConfigured("django.contrib.sites is required")


# The maximum allowed length for field values.
FIELD_MAX_LENGTH = getattr(settings, "FORMS_BUILDER_FIELD_MAX_LENGTH", 2000)

# The maximum allowed length for field labels.
LABEL_MAX_LENGTH = getattr(settings, "FORMS_BUILDER_LABEL_MAX_LENGTH", 200)

# Sequence of custom fields that will be added to the form field types.
EXTRA_FIELDS = getattr(settings, "FORMS_BUILDER_EXTRA_FIELDS", ())

# Sequence of custom widgets that will add/update form fields widgets.
EXTRA_WIDGETS = getattr(settings, "FORMS_BUILDER_EXTRA_WIDGETS", ())

# The absolute path where files will be uploaded to.
UPLOAD_ROOT = getattr(settings, "FORMS_BUILDER_UPLOAD_ROOT", None)

# Boolean controlling whether HTML5 form fields are used.
USE_HTML5 = getattr(settings, "FORMS_BUILDER_USE_HTML5", True)

# Boolean controlling whether forms are associated to Django's Sites framework.
USE_SITES = getattr(settings, "FORMS_BUILDER_USE_SITES", False)

# Boolean controlling whether form slugs are editable in the admin.
EDITABLE_SLUGS = getattr(settings, "FORMS_BUILDER_EDITABLE_SLUGS", False)

# Char to start a quoted choice with.
CHOICES_QUOTE = getattr(settings, "FORMS_BUILDER_CHOICES_QUOTE", "`")

# Char to end a quoted choice with.
CHOICES_UNQUOTE = getattr(settings, "FORMS_BUILDER_CHOICES_UNQUOTE", "`")

# Char to use as a field delimiter when exporting form responses as CSV.
CSV_DELIMITER = getattr(settings, "FORMS_BUILDER_CSV_DELIMITER", ",")

# The maximum allowed length for field help text
HELPTEXT_MAX_LENGTH = getattr(settings, "FORMS_BUILDER_HELPTEXT_MAX_LENGTH", 100)

# The maximum allowed length for field choices
CHOICES_MAX_LENGTH = getattr(settings, "FORMS_BUILDER_CHOICES_MAX_LENGTH", 1000)

# Does sending emails fail silently or raise an exception.
EMAIL_FAIL_SILENTLY = getattr(settings, "FORMS_BUILDER_EMAIL_FAIL_SILENTLY",
                              settings.DEBUG)

# Django SITE_ID - need a default since no longer provided in settings.py.
SITE_ID = getattr(settings, "SITE_ID", 1)