using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Xml.Linq;
using rage.Generator;
using rage.ToolLib;

namespace rage
{
    class Note : IComparable
    {
        public int tone;
        public string waveName;


        public Note(string waveName)
        {
            this.waveName = waveName;
            // past the last _ we have the note id - e.g.: HONKYTONK_XX
            string noteIndex = waveName.Substring(waveName.LastIndexOf("_") + 1); 
            this.tone = int.Parse(noteIndex);
        }

        public int CompareTo(Object note)
        {

            if (note == null)
            {
                return 1;
            }
            else
            {
                return this.tone.CompareTo(((Note)note).tone);
            }
        }

        override public string ToString()
        {
            return waveName;
        }
        
    }

    class NoteRange
    {
        Note baseNote;
        public int firstToneId;
        public int lastToneId;

        private int releaseTime = 333;

        public NoteRange(Note note, int firstToneId, int lastToneId) 
        {
            baseNote = note;
            this.firstToneId = firstToneId;
            this.lastToneId = lastToneId;
        }
                
        public XElement AsSimpleSound(string instrumentName, string instrumentTypeName)
        {
            XElement simpleSound = new XElement("SimpleSound");

            simpleSound.SetAttributeValue("name", instrumentTypeName + "_" + instrumentName + "_" + baseNote.waveName);
            simpleSound.SetAttributeValue("folder", instrumentTypeName + "_" + instrumentName + "_COMPONENTS");

            XElement waveRef = new XElement("WaveRef");
            XElement waveName = new XElement("WaveName", baseNote.waveName);
            XElement bankName = new XElement("BankName", "SCRIPT\\" + instrumentName);


            XElement release = new XElement("ReleaseTime", releaseTime);

            waveRef.Add(waveName);
            waveRef.Add(bankName);
            simpleSound.Add(waveRef);
            simpleSound.Add(release);

            return simpleSound;
        }

        public XElement AsNoteRange(string instrumentName, string instrumentTypeName)
        {

            XElement rangeKey = new XElement("Range");

            XElement firstNoteIdElement = new XElement("FirstNoteId");
            firstNoteIdElement.SetValue(firstToneId);
            rangeKey.Add(firstNoteIdElement);

            XElement lastNoteIdElement = new XElement("LastNoteId");
            lastNoteIdElement.SetValue(lastToneId);
            rangeKey.Add(lastNoteIdElement);

            XElement mode = new XElement("Mode");
            mode.SetValue("NOTE_RANGE_TRACK_PITCH");
            rangeKey.Add(mode);

            XElement soundRef = new XElement("SoundRef");
            soundRef.SetValue(instrumentTypeName + "_" + instrumentName + "_" + baseNote.waveName);
            rangeKey.Add(soundRef);

            return rangeKey;
        }

        override public string ToString()
        {
            return baseNote.ToString(); ;
        }
        
    }

    class Instrument
    {

        List<Note> notes;
        List<NoteRange> noteRanges;
        string name;
        string type;

        public Instrument(string instrumentName, string instrumentTypeName)
        {
            notes = new List<Note>();
            noteRanges = new List<NoteRange>();
            name = instrumentName;
            type = instrumentTypeName;
        }

        public void AddNote(Note note) 
        {
            notes.Add(note);
        }

        public void GenerateAndSortNoteRange()
        {
            notes.Sort();

            int lastFirstToneId = 128;
            notes.Reverse();

            foreach (Note note in notes)
            {
                NoteRange newNoteRange = new NoteRange(note, note.tone, lastFirstToneId);
                lastFirstToneId = newNoteRange.firstToneId - 1;

                noteRanges.Add(newNoteRange);
            }

            noteRanges.Reverse();
            NoteRange firstRange = noteRanges.First<NoteRange>();
            firstRange.firstToneId = 0;

        }

        public List<XElement> AsXML()
        {
            List<XElement> elements = new List<XElement>();

            foreach (NoteRange range in noteRanges)
            {
                elements.Add(range.AsSimpleSound(name, type));
            }

            XElement currentNoteMap = new XElement("NoteMap");
            currentNoteMap.SetAttributeValue("name", name + "_NoteMap");

            foreach (NoteRange range in noteRanges)
            {
                currentNoteMap.Add(range.AsNoteRange(name, type));
            }
            elements.Add(currentNoteMap);

            return elements;
        }

        override public string ToString()
        {
            return name + "_" + type;
        }
    }


    public class InstrumentNoteMapGenerator : IGenerator
    {
        #region IGenerator Members

        public bool Init(rage.ToolLib.Logging.ILog log, string workingPath, rage.audProjectSettings projectSettings, Types.ITypeDefinitionsManager typeDefManager, params string[] args)
        {   
            return true;
        }
        
        public XDocument Generate(rage.ToolLib.Logging.ILog log, XDocument inputDoc)
        {
            var outputDoc = new XDocument();
            XElement objsElem = new XElement("Objects");

            List<Instrument> instruments = new List<Instrument>();

            foreach (XElement packRoot in inputDoc.Descendants("Pack"))
            {
                foreach (XElement firstLevelElement in packRoot.Descendants("BankFolder"))
                {
                    string baseBankFolderName = firstLevelElement.Attribute("name").Value;
                    if (baseBankFolderName.ToUpper().Equals("INSTRUMENTS"))
                    {
                        foreach (XElement secondLevelElement in firstLevelElement.Descendants("BankFolder"))
                        {
                            string instrumentTypeName = secondLevelElement.Attribute("name").Value;
                            instrumentTypeName = instrumentTypeName.ToUpper();

                            foreach (XElement instrumentBank in secondLevelElement.Descendants("Bank"))
                            {
                                string instrumentName = instrumentBank.Attribute("name").Value;
                                instrumentName = instrumentName.ToUpper();
                                
                                Instrument newInstrument = new Instrument(instrumentName, instrumentTypeName);
                                
                                foreach (XElement waveElement in instrumentBank.Descendants("Wave"))
                                {
                                    string soundName = waveElement.Attribute("builtName").Value;
                                    soundName = soundName.Substring(0, soundName.Length - 4); // remove the extension
                                    soundName = soundName.ToUpper();

                                    Note newNote = new Note(soundName);

                                    newInstrument.AddNote(newNote);

                                }

                                instruments.Add(newInstrument);
                            }
                        }
                    }
                }
            }
                        
            foreach (Instrument instrument in instruments)
            {
                instrument.GenerateAndSortNoteRange();
                List<XElement> elements = instrument.AsXML();
                objsElem.Add(elements.ToArray());
            }

            outputDoc.Add(objsElem);
            return outputDoc;
        }

        public void Shutdown()
        {
            
        }

        #endregion
    }
}