using Microsoft.Practices.EnterpriseLibrary.Common.Configuration;
using Microsoft.Practices.EnterpriseLibrary.Logging;
using Microsoft.Practices.EnterpriseLibrary.Logging.Configuration;
using Microsoft.Practices.EnterpriseLibrary.Logging.TraceListeners;
using System;
using System.Collections.Generic;
using System.Collections.ObjectModel;
using System.Diagnostics;
using System.Text;

namespace LoggingLibraryTest
{
    [ConfigurationElementType(typeof(CustomTraceListenerData))]
    public class StubTraceListener : CustomTraceListener
    {
        private readonly static List<LogEntry> logEntries_ =
            new List<LogEntry>();
        private readonly static List<string> logMessages_ =
            new List<string>();

        public override void Write(string message)
        {
            StubTraceListener.logMessages_.Add(message);
        }

        public override void WriteLine(string message)
        {
            StubTraceListener.logMessages_.Add(message);
        }

        public override void TraceData(TraceEventCache eventCache,
            string source, TraceEventType eventType, int id,
            object data)
        {
            LogEntry le = data as LogEntry;
            if (le != null)
            {
                StubTraceListener.logEntries_.Add(le);
                if (this.Formatter != null)
                {
                    this.Write(this.Formatter.Format(le));
                    return;
                }
            }
            base.TraceData(eventCache, source, eventType, id, data);
        }

        internal static IList<string> GetLogMessages()
        {
            return new ReadOnlyCollection<string>
                (StubTraceListener.logMessages_);
        }

        internal static IList<LogEntry> GetLogEntries()
        {
            return new ReadOnlyCollection<LogEntry>
                (StubTraceListener.logEntries_);
        }

        internal static void Reset()
        {
            StubTraceListener.logEntries_.Clear();
            StubTraceListener.logMessages_.Clear();
        }
    }
}