use super::types::*;

pub enum Namespace {
    Dav,
    CalDav,
}

pub struct CalExtension {}
impl Extension for CalExtension {
    type Error = Violation;
    type Namespace = Namespace;

    fn namespaces() -> &'static [(&'static str, &'static str)] {
        return &[ ("D", "DAV:"), ("C", "urn:ietf:params:xml:ns:caldav") ][..]
    }

    fn short_ns(ns: Self::Namespace) -> &'static str {
        match ns {
            Namespace::Dav => "D",
            Namespace::CalDav => "C",
        }
    }
}

pub enum Violation {
    /// (CALDAV:supported-filter): The CALDAV:comp-filter (see
    /// Section 9.7.1), CALDAV:prop-filter (see Section 9.7.2), and
    /// CALDAV:param-filter (see Section 9.7.3) XML elements used in the
    /// CALDAV:filter XML element (see Section 9.7) in the REPORT request
    /// only make reference to components, properties, and parameters for
    /// which queries are supported by the server, i.e., if the CALDAV:
    /// filter element attempts to reference an unsupported component,
    /// property, or parameter, this precondition is violated.  Servers
    /// SHOULD report the CALDAV:comp-filter, CALDAV:prop-filter, or
    /// CALDAV:param-filter for which it does not provide support.
    ///
    /// <!ELEMENT supported-filter (comp-filter*,
    ///                             prop-filter*,
    ///                             param-filter*)>
    SupportedFilter,
}