using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Reflection;
using System.Windows.Forms;

namespace RomCheater.Logging
{
    public interface ILogger
    {
        void Write(string format, params object[] args);
        void WriteLine(string format, params object[] args);
    }


    #region MesageLogger
    [Flags]
    public enum loggerflags
    {
        NONE = 0x0000,              // 000
        INFO = 0x0001,              // 001
        DEBUG = 0x0002,             // 010
        ERROR= 0x0004,              // 100
        DEFAULT = INFO | ERROR | DEBUG,
        ALL = DEFAULT,
    }
    public static class logger
    {
        private static loggerflags logging_flags;
        static logger() { SetLoggingFlags(loggerflags.DEFAULT); }
        public static void SetLoggingFlags(loggerflags flags) { logging_flags = flags; }
        #region sub-classes
        private static string CreateTimeStamp()
        {
            string timestamp = "";
            DateTime now = DateTime.Now;
            timestamp = now.ToString("yyyy/MM/dd HH:mm:ss tt: ");
            return timestamp;
        }
        public static class Info
        {
            private static string CreateNewFormat(string format) { return "    " + CreateTimeStamp()+ "(INFO) " + format; }
            public static void Write(string format, params object[] args) { if (logging_flags.HasFlag(loggerflags.INFO)) { xlogger.Write(CreateNewFormat(format), args); } }
            public static void WriteLine(string format, params object[] args) { if (logging_flags.HasFlag(loggerflags.INFO)) { xlogger.WriteLine(CreateNewFormat(format), args); } }
        }
        public static class Debug
        {
            private static string CreateNewFormat(string format) { return "    " + CreateTimeStamp() + "(DEBUG) " + format; }
            public static void Write(string format, params object[] args) { if (logging_flags.HasFlag(loggerflags.DEBUG)) { xlogger.Write(CreateNewFormat(format), args); } }
            public static void WriteLine(string format, params object[] args) { if (logging_flags.HasFlag(loggerflags.DEBUG)) { xlogger.WriteLine(CreateNewFormat(format), args); } }
        }
        public static class Error
        {
            private static string CreateNewFormat(string format) { return "    " + CreateTimeStamp() + "(ERROR) " + format; }
            public static void Write(string format, params object[] args) { if (logging_flags.HasFlag(loggerflags.ERROR)) { xlogger.Write(CreateNewFormat(format), args); } }
            public static void WriteLine(string format, params object[] args) { if (logging_flags.HasFlag(loggerflags.ERROR)) { xlogger.WriteLine(CreateNewFormat(format), args); } }
        }
        #region Force logging
        public static class ForceLog
        {
            public static class Info
            {
                private static string CreateNewFormat(string format) { return "    " + CreateTimeStamp() + "(FORCED INFO) " + format; }
                public static void Write(string format, params object[] args) { xlogger.Write(CreateNewFormat(format), args); }
                public static void WriteLine(string format, params object[] args) { xlogger.WriteLine(CreateNewFormat(format), args); }
            }
            public static class Debug
            {
                private static string CreateNewFormat(string format) { return "    " + CreateTimeStamp() + "(FORCED DEBUG) " + format; }
                public static void Write(string format, params object[] args) { xlogger.Write(CreateNewFormat(format), args); }
                public static void WriteLine(string format, params object[] args) { xlogger.WriteLine(CreateNewFormat(format), args); }
            }
            public static class Error
            {
                private static string CreateNewFormat(string format) { return "    " + CreateTimeStamp() + "(FORCED ERROR) " + format; }
                public static void Write(string format, params object[] args) { xlogger.Write(CreateNewFormat(format), args); }
                public static void WriteLine(string format, params object[] args) { xlogger.WriteLine(CreateNewFormat(format), args); }
            }
        }
        #endregion
        #endregion

    }
    #endregion

    #region internal static class Logger
    internal static class xlogger
    {
        private static logwriter lh;
        static xlogger() { lh = new logwriter(); }

        #region ILogger Members
        public static void Write(string format, params object[] args)
        {            
            init();
            lh.Write(format, args);
        }
        public static void WriteLine(string format, params object[] args)
        {
            init();
            lh.WriteLine(format, args);
        }
        #endregion

        #region Reflection Support
        private static void init()
        {
            Assembly asm = Assembly.GetEntryAssembly();
            Type[] types = asm.GetTypes();

            foreach (Type t in types)
            {
                if (t.BaseType == typeof(Form))
                {
                    LogWriter lw = null;
                    PropertyInfo[] properties = t.GetProperties(BindingFlags.NonPublic | BindingFlags.Static);
                    foreach (PropertyInfo prop in properties)
                    {
                        if (prop.PropertyType == typeof(LogWriter))
                        {
                            try
                            {
                                lw = (LogWriter)prop.GetValue(null, null);
                                lh = new logwriter(lw);
                                break;
                            }
                            catch (Exception)
                            {
                                throw;
                            }
                        }
                    }                    
                }
            }
        }
        #endregion
    }
    #endregion

    #region internal class LogHelper : ILogger
    internal class logwriter : ILogger
    {
        private LogWriter writer;
        public logwriter() : this(null) { }
        public logwriter(LogWriter writer)
        {
            this.writer = writer;
        }
        #region ILogger Members
        public void Write(string format, params object[] args)
        {
            WriteToLog(format,false, args);
        }
        public void WriteLine(string format, params object[] args)
        {
            WriteToLog(format,true, args);
        }
        private void WriteToLog(string format, bool newline, params object[] args)
        {
            if (writer != null)
            {
                if (newline)
                {
                    writer.Log.WriteLine(format, args);
                }
                else
                {
                    writer.Log.Write(format, args);
                }
            }
        }
        #endregion
    }
#endregion
}