// <copyright file="DriverProcessStartedEventArgs.cs" company="Selenium Committers">
// Licensed to the Software Freedom Conservancy (SFC) under one
// or more contributor license agreements.  See the NOTICE file
// distributed with this work for additional information
// regarding copyright ownership.  The SFC licenses this file
// to you 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 System;
using System.Diagnostics;
using System.IO;

namespace OpenQA.Selenium
{
    /// <summary>
    /// Provides data for the DriverProcessStarted event of a <see cref="DriverService"/> object.
    /// </summary>
    public class DriverProcessStartedEventArgs : EventArgs
    {
        private int processId;
        private StreamReader standardOutputStreamReader;
        private StreamReader standardErrorStreamReader;

        /// <summary>
        /// Initializes a new instance of the <see cref="DriverProcessStartingEventArgs"/> class.
        /// </summary>
        /// <param name="driverProcess">The <see cref="Process"/> object started.</param>
        public DriverProcessStartedEventArgs(Process driverProcess)
        {
            this.processId = driverProcess.Id;
            if (driverProcess.StartInfo.RedirectStandardOutput && !driverProcess.StartInfo.UseShellExecute)
            {
                this.standardOutputStreamReader = driverProcess.StandardOutput;
            }

            if (driverProcess.StartInfo.RedirectStandardError && !driverProcess.StartInfo.UseShellExecute)
            {
                this.standardErrorStreamReader = driverProcess.StandardError;
            }
        }

        /// <summary>
        /// Gets the unique ID of the driver executable process.
        /// </summary>
        public int ProcessId
        {
            get { return this.processId; }
        }

        /// <summary>
        /// Gets a <see cref="StreamReader"/> object that can be used to read the contents
        /// printed to stdout by a driver service process.
        /// </summary>
        public StreamReader StandardOutputStreamReader
        {
            get { return this.standardOutputStreamReader; }
        }

        /// <summary>
        /// Gets a <see cref="StreamReader"/> object that can be used to read the contents
        /// printed to stderr by a driver service process.
        /// </summary>
        public StreamReader StandardErrorStreamReader
        {
            get { return standardErrorStreamReader; }
        }
    }
}
