// <copyright file="TestOpenTracingWithConsoleExporter.cs" company="OpenTelemetry Authors">
// Copyright The OpenTelemetry Authors
//
// 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.
// </copyright>

using OpenTelemetry.Context.Propagation;
using OpenTelemetry.Resources;
using OpenTelemetry.Shims.OpenTracing;
using OpenTelemetry.Trace;
using OpenTelemetry.Trace.Configuration;
using OpenTracing;

namespace Examples.Console
{
    internal class TestOpenTracingWithConsoleExporter
    {
        internal static object Run(OpenTracingShimOptions options)
        {
            // Enable OpenTelemetry for the source "MyCompany.MyProduct.MyWebServer"
            // and use Console exporter.
            using var openTelemetry = OpenTelemetrySdk.EnableOpenTelemetry(
                (builder) => builder.AddActivitySource("MyCompany.MyProduct.MyWebServer")
                    .SetResource(Resources.CreateServiceResource("MyServiceName"))
                    .UseConsoleExporter(opt => opt.DisplayAsJson = options.DisplayAsJson));

            // The above line is required only in applications
            // which decide to use OpenTelemetry.

            // Following shows how to use the OpenTracing shim

            var tracer = new TracerShim(TracerProvider.GetTracer("MyCompany.MyProduct.MyWebServer"), new TraceContextFormat());

            using (IScope parentScope = tracer.BuildSpan("Parent").StartActive(finishSpanOnDispose: true))
            {
                parentScope.Span.SetTag("my", "value");
                parentScope.Span.SetOperationName("parent span new name");

                // The child scope will automatically use parentScope as its parent.
                using (IScope childScope = tracer.BuildSpan("Child").StartActive(finishSpanOnDispose: true))
                {
                    childScope.Span.SetTag("Child Tag", "Child Tag Value").SetTag("ch", "value").SetTag("more", "attributes");
                }
            }

            System.Console.WriteLine("Press Enter key to exit.");

            return null;
        }
    }
}