import Mux
# https://www.w3.org/Protocols/rfc2616/rfc2616-sec10.html
error() = error(0, "A generic error.", 500)
missing_parameter() = error(10, "Required parameter is missing.", 400)
missing_parameter(n) = error(10, "Required parameter ($n) is missing.", 400)

upgrade_client() =
    error(20, "Incompatible Subsonic REST protocol version. Client must upgrade.", 400)
upgrade_server() =
    error(30, "Incompatible Subsonic REST protocol version. Server must upgrade.", 501)
upgrade_server(m) =
    error(30, "$m. Server must upgrade.", 501)

auth_failed() =
    error(40, "Wrong username or password.", 401)
ldap_unsupported() =
    error(41, "Token authentication not supported for LDAP users.", 501)
unauthorized() =
    error(50, "User is not authorized for the given operation.", 401)

unauthorized(m) =
    error(50, "User is not authorized for the given operation ($m).", 401)

not_found() =
    error(70, "The requested data was not found.", 404)
not_found(n) =
    error(70, "The requested data ($n) was not found.", 404)

# FIXME: to use the status, we need to take the request dict
function error(code, message, error_code)
    (xdoc, xroot) = subsonic(version = "1.1.0", status = "failed")
    er = new_child(xroot, "error")
    set_attributes(er, [("code", string(code)),
                        ("message", string(message))])
    doc_str = string(xdoc)
    free(xdoc)
    return Dict(:status => error_code,
                :body => doc_str)
end