﻿/*
 * 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.
 */

namespace DotPulsar.Internal.Extensions
{
    using System;
    using System.Diagnostics;

    public static class ActivityExtensions
    {
        private const string _exceptionEventName = "exception";
        private const string _exceptionStackTrace = "exception.stacktrace";
        private const string _exceptionType = "exception.type";
        private const string _exceptionMessage = "exception.message";
        private const string _messageId = "messaging.message_id";
        private const string _payloadSize = "messaging.message_payload_size_bytes";
        private const string _statusCode = "otel.status_code";

        public static void AddException(this Activity activity, Exception exception)
        {
            activity.SetStatusCode("ERROR");

            var exceptionTags = new ActivityTagsCollection
            {
                { _exceptionType, exception.GetType().FullName },
                { _exceptionStackTrace, exception.ToString() }
            };

            if (!string.IsNullOrWhiteSpace(exception.Message))
                exceptionTags.Add(_exceptionMessage, exception.Message);

            var activityEvent = new ActivityEvent(_exceptionEventName, default, exceptionTags);
            activity.AddEvent(activityEvent);
        }

        public static void SetMessageId(this Activity activity, MessageId messageId)
            => activity.SetTag(_messageId, messageId.ToString());

        public static void SetStatusCode(this Activity activity, string statusCode)
            => activity.SetTag(_statusCode, statusCode);

        public static void SetPayloadSize(this Activity activity, long payloadSize)
            => activity.SetTag(_payloadSize, payloadSize);
    }
}