# Copyright 2010 New Relic, Inc.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#      http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

from collections import namedtuple

import newrelic.core.trace_node
from newrelic.core.node_mixin import GenericNodeMixin

_RootNode = namedtuple(
    "_RootNode",
    [
        "name",
        "children",
        "start_time",
        "end_time",
        "exclusive",
        "duration",
        "guid",
        "agent_attributes",
        "user_attributes",
        "path",
        "trusted_parent_span",
        "tracing_vendors",
    ],
)


class RootNode(_RootNode, GenericNodeMixin):
    def span_event(self, *args, **kwargs):
        span = super(RootNode, self).span_event(*args, **kwargs)
        i_attrs = span[0]
        i_attrs["transaction.name"] = self.path
        i_attrs["nr.entryPoint"] = True
        if self.trusted_parent_span:
            i_attrs["trustedParentId"] = self.trusted_parent_span
        if self.tracing_vendors:
            i_attrs["tracingVendors"] = self.tracing_vendors
        return span

    def trace_node(self, stats, root, connections):
        name = self.path

        start_time = newrelic.core.trace_node.node_start_time(root, self)
        end_time = newrelic.core.trace_node.node_end_time(root, self)

        root.trace_node_count += 1

        children = []

        for child in self.children:
            if root.trace_node_count > root.trace_node_limit:
                break
            children.append(child.trace_node(stats, root, connections))

        params = self.get_trace_segment_params(root.settings)

        return newrelic.core.trace_node.TraceNode(
            start_time=start_time, end_time=end_time, name=name, params=params, children=children, label=None
        )
