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 loggerflags
    public class loggerflagsbase<TValue> 
        where TValue : IConvertible
    {
         static loggerflagsbase()
        {
            value_pairs = new Dictionary<TValue, EnumNameValuePair<TValue>>();
            name_pairs = new Dictionary<string, EnumNameValuePair<TValue>>();
            
            init_dicts();
        }
        protected loggerflagsbase() 
        {
            CurrentValue = NONE;
        }
        //protected loggerflags(ushort t) : this() { CurrentValue = new EnumNameValuePair< ushort>("", t); }
        protected loggerflagsbase(EnumNameValuePair< TValue> t) { CurrentValue = t; }
        protected loggerflagsbase(loggerflagsbase<TValue> t) { this.CurrentValue = t.CurrentValue; }
        private static void init_dicts()
        {
            value_pairs = new Dictionary<TValue, EnumNameValuePair< TValue>>();
            name_pairs = new Dictionary<string, EnumNameValuePair< TValue>>();
            add_dict_entry(NONE);
            add_dict_entry(INFO);
            add_dict_entry(DEBUG);
            add_dict_entry(ERROR);
            add_dict_entry(VERBOSE_DEBUG);
            add_dict_entry(VERBOSE_ERROR);
            add_dict_entry(DEFAULT);
            add_dict_entry(ALL);
        }

        private static void add_dict_entry(EnumNameValuePair<TValue> value)
        {
            try
            {
                value_pairs.Add(value, value);
                name_pairs.Add(value, value);
            }
            catch { }
        }

        #region implicit operators
        public static implicit operator loggerflagsbase<TValue>(EnumNameValuePair<TValue> t) { return new loggerflagsbase<TValue>(t); }
        public static implicit operator EnumNameValuePair<TValue>(loggerflagsbase<TValue> t) { return new loggerflagsbase<TValue>(t); }
        public static implicit operator loggerflagsbase<TValue>(TValue t) 
        {
            foreach (KeyValuePair<TValue, EnumNameValuePair<TValue>> pair in value_pairs) { EnumNameValuePair<TValue> l = pair.Value; if (l.Value.Equals(t)) { return new loggerflagsbase<TValue>(l); } }
            return loggerflagsbase<TValue>.NONE;
        }
        public static implicit operator TValue(loggerflagsbase<TValue> t) { return t.CurrentValue.Value; }
        public static implicit operator string(loggerflagsbase<TValue> t) { return t.CurrentValue.Name; }

        #region operator overloads
        public static bool operator ==(loggerflagsbase<TValue> x, loggerflagsbase<TValue> y) { return x.CurrentValue == y.CurrentValue; }
        public static bool operator !=(loggerflagsbase<TValue> x, loggerflagsbase<TValue> y) { return x.CurrentValue != y.CurrentValue; }
        public override bool Equals(object obj)
        {
            loggerflags t = (obj as loggerflags);
            if (t == null) return false;
            return this.CurrentValue.Equals(t);
        }
        public override int GetHashCode()
        {
            return CurrentValue.GetHashCode();
        }
        public override string ToString()
        {
            
            return CurrentValue.ToString();
        }
        #endregion
        #endregion
        #region binary bit flags
        public static EnumNameValuePair<TValue> NONE = new EnumNameValuePair<TValue>("NONE", Binary<TValue>.ToValue("00000"));
        public static EnumNameValuePair<TValue> INFO = new EnumNameValuePair<TValue>("INFO", Binary<TValue>.ToValue("00001"));
        public static EnumNameValuePair<TValue> DEBUG = new EnumNameValuePair<TValue>("DEBUG", Binary<TValue>.ToValue("00010"));
        public static EnumNameValuePair<TValue> ERROR = new EnumNameValuePair<TValue>("ERROR", Binary<TValue>.ToValue("00100"));
        public static EnumNameValuePair<TValue> VERBOSE_DEBUG = new EnumNameValuePair<TValue>("VERBOSE_DEBUG", Binary<TValue>.ToValue("01000"));
        public static EnumNameValuePair<TValue> VERBOSE_ERROR = new EnumNameValuePair<TValue>("VERBOSE_ERROR", Binary<TValue>.ToValue("10000"));
        public static EnumNameValuePair<TValue> WARN = new EnumNameValuePair<TValue>("WARN", Binary<TValue>.ToValue("100000"));
        public static EnumNameValuePair<TValue> DEFAULT = new EnumNameValuePair<TValue>("DEFAULT", EnumNameValuePair<TValue>.bitwise_or(INFO, DEBUG, ERROR, WARN));
        public static EnumNameValuePair<TValue> ALL = new EnumNameValuePair<TValue>("ALL", EnumNameValuePair<TValue>.bitwise_or(DEFAULT, VERBOSE_DEBUG, VERBOSE_ERROR));
        #endregion

        protected static Dictionary<TValue, EnumNameValuePair<TValue>> value_pairs;
        protected static Dictionary<string, EnumNameValuePair<TValue>> name_pairs;
        private EnumNameValuePair<TValue> CurrentValue { get; set; }

        public bool HasFlag(TValue flag)
        {
            bool hasflag = false;
            TValue value = this.CurrentValue;
            if (!(EnumNameValuePair<TValue>.bitwise_and(flag, value)).Equals(value))
                hasflag = true;
            return hasflag;
        }

        public static List<TValue> GetValues() { return value_pairs.Keys.ToList(); }
        public static List<string> GetNames() { return name_pairs.Keys.ToList(); }

        public string Name { get { return CurrentValue.Name; } }
        public TValue Value { get { return CurrentValue.Value; } }
    }
    //[Flags]
    public class loggerflags : loggerflagsbase<ushort>
    {
          protected loggerflags() :base()        {        }
        //protected loggerflags(ushort t) : this() { CurrentValue = new EnumNameValuePair< ushort>("", t); }
          protected loggerflags(EnumNameValuePair<ushort> t) : base(t) { }
          protected loggerflags(loggerflagsbase<ushort> t) : base(t) { }
        #region implicit operators
          public static implicit operator loggerflags(EnumNameValuePair<ushort> t) { return new loggerflags(t); }
          public static implicit operator EnumNameValuePair<ushort>(loggerflags t) { return new loggerflags(t.Value); }
          public static implicit operator ushort(loggerflags t) { return t.Value; }
          public static implicit operator loggerflags(ushort t) { return new loggerflags(t); }
          public static implicit operator string(loggerflags t) { return t.Name; }
        #endregion

    }
    
    public static class logger
    {
        private static loggerflags logging_flags;
        static logger() { SetLoggingFlags(loggerflags.DEFAULT); }
        public static void SetLoggingFlags(loggerflags flags) { logging_flags = flags; }
        public static loggerflags GetLoggingFlags() { return logging_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 Warn
        {
            private static string CreateNewFormat(string format) { return "    " + CreateTimeStamp() + "(WARN) " + format; }
            public static void Write(string format, params object[] args) { if (logging_flags.HasFlag(loggerflags.WARN)) { xlogger.Write(CreateNewFormat(format), args); } }
            public static void WriteLine(string format, params object[] args) { if (logging_flags.HasFlag(loggerflags.WARN)) { 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 VerboseDebug
        {
            private static string CreateNewFormat(string format) { return "    " + CreateTimeStamp() + "(VERBOSE DEBUG) " + format; }
            public static void Write(string format, params object[] args) { if (logging_flags.HasFlag(loggerflags.VERBOSE_DEBUG)) { xlogger.Write(CreateNewFormat(format), args); } }
            public static void WriteLine(string format, params object[] args) { if (logging_flags.HasFlag(loggerflags.VERBOSE_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); } }
        }
        public static class VerboseError
        {
            private static string CreateNewFormat(string format) { return "    " + CreateTimeStamp() + "(VERBOSE ERROR) " + format; }
            public static void Write(string format, params object[] args) { if (logging_flags.HasFlag(loggerflags.VERBOSE_ERROR)) { xlogger.Write(CreateNewFormat(format), args); } }
            public static void WriteLine(string format, params object[] args) { if (logging_flags.HasFlag(loggerflags.VERBOSE_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 Warn
            {
                private static string CreateNewFormat(string format) { return "    " + CreateTimeStamp() + "(FORCED Warn) " + 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
}