/*
 * VsqNrpn.cs
 * Copyright (c) 2008-2009 kbinani
 *
 * This file is part of Boare.Lib.Vsq.
 *
 * Boare.Lib.Vsq is free software; you can redistribute it and/or
 * modify it under the terms of the BSD License.
 *
 * Boare.Lib.Vsq is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
 */
using System;
using System.Collections.Generic;

namespace Boare.Lib.Vsq {

    public struct VsqNrpn : IComparable<VsqNrpn> {
        public int Clock;
        public ushort Nrpn;
        public byte DataMsb;
        public byte DataLsb;
        public bool DataLsbSpecified;
        public bool msbOmitRequired;
        private List<VsqNrpn> m_list;

        public VsqNrpn( int clock, ushort nrpn, byte data_msb ) {
            Clock = clock;
            Nrpn = nrpn;
            DataMsb = data_msb;
            DataLsb = 0x0;
            DataLsbSpecified = false;
            msbOmitRequired = false;
            m_list = new List<VsqNrpn>();
        }

        public VsqNrpn( int clock, ushort nrpn, byte data_msb, byte data_lsb ) {
            Clock = clock;
            Nrpn = nrpn;
            DataMsb = data_msb;
            DataLsb = data_lsb;
            DataLsbSpecified = true;
            msbOmitRequired = false;
            m_list = new List<VsqNrpn>();
        }

        public VsqNrpn[] expand() {
            List<VsqNrpn> ret = new List<VsqNrpn>();
            if ( DataLsbSpecified ) {
                VsqNrpn v = new VsqNrpn( Clock, Nrpn, DataMsb, DataLsb );
                v.msbOmitRequired = msbOmitRequired;
                ret.Add( v );
            } else {
                VsqNrpn v = new VsqNrpn( Clock, Nrpn, DataMsb );
                v.msbOmitRequired = msbOmitRequired;
                ret.Add( v );
            }
            for ( int i = 0; i < m_list.Count; i++ ) {
                ret.AddRange( m_list[i].expand() );
            }
            return ret.ToArray();
        }

        public static List<VsqNrpn> sort( List<VsqNrpn> list ) {
            List<VsqNrpn> ret = new List<VsqNrpn>();
            list.Sort();
            if ( list.Count >= 2 ) {
                List<VsqNrpn> work = new List<VsqNrpn>(); //workには、clockが同じNRPNだけが入る
                int last_clock = list[0].Clock;
                work.Add( list[0] );
                for ( int i = 1; i < list.Count; i++ ) {
                    if ( list[i].Clock == last_clock ) {
                        work.Add( list[i] );
                    } else {
                        // まずworkを並べ替え
                        last_clock = list[i].Clock;
                        bool changed = true;
                        while ( changed ) {
                            changed = false;
                            for ( int j = 0; j < work.Count - 1; j++ ) {
                                byte nrpn_msb0 = (byte)((work[j].Nrpn >> 8) & 0xff);
                                byte nrpn_msb1 = (byte)((work[j + 1].Nrpn >> 8) & 0xff);
                                if ( nrpn_msb1 > nrpn_msb0 ) {
                                    VsqNrpn buf = work[j];
                                    work[j] = work[j + 1];
                                    work[j + 1] = buf;
                                    changed = true;
                                }
                            }
                        }
                        for ( int j = 0; j < work.Count; j++ ) {
                            ret.Add( work[j] );
                        }
                        work.Clear();
                        work.Add( list[i] );
                    }
                }
                for ( int j = 0; j < work.Count; j++ ) {
                    ret.Add( work[j] );
                }
            } else {
                for ( int i = 0; i < list.Count; i++ ) {
                    ret.Add( list[i] );
                }
            }
            return ret;
        }

        public static VsqNrpn[] merge( VsqNrpn[] src1, VsqNrpn[] src2 ) {
            List<VsqNrpn> ret = new List<VsqNrpn>();
            for ( int i = 0; i < src1.Length; i++ ) {
                ret.Add( src1[i] );
            }
            for ( int i = 0; i < src2.Length; i++ ) {
                ret.Add( src2[i] );
            }
            ret.Sort();
            return ret.ToArray();
        }

        public static NrpnData[] convert( VsqNrpn[] source ) {
            ushort nrpn = (ushort)source[0].Nrpn;
            byte msb = (byte)(nrpn >> 8);
            byte lsb = (byte)(nrpn - (nrpn << 8));
            List<NrpnData> ret = new List<NrpnData>();
            ret.Add( new NrpnData( source[0].Clock, 0x63, msb ) );
            ret.Add( new NrpnData( source[0].Clock, 0x62, lsb ) );
            ret.Add( new NrpnData( source[0].Clock, 0x06, source[0].DataMsb ) );
            if ( source[0].DataLsbSpecified ) {
                ret.Add( new NrpnData( source[0].Clock, 0x26, source[0].DataLsb ) );
            }
            for ( int i = 1; i < source.Length; i++ ) {
                VsqNrpn item = source[i];
                ushort tnrpn = item.Nrpn;
                msb = (byte)(tnrpn >> 8);
                lsb = (byte)(tnrpn - (tnrpn << 8));
                if ( item.msbOmitRequired ) {
                    ret.Add( new NrpnData( item.Clock, 0x62, lsb ) );
                    ret.Add( new NrpnData( item.Clock, 0x06, item.DataMsb ) );
                    if ( item.DataLsbSpecified ) {
                        ret.Add( new NrpnData( item.Clock, 0x26, item.DataLsb ) );
                    }
                } else {
                    ret.Add( new NrpnData( item.Clock, 0x63, msb ) );
                    ret.Add( new NrpnData( item.Clock, 0x62, lsb ) );
                    ret.Add( new NrpnData( item.Clock, 0x06, item.DataMsb ) );
                    if ( item.DataLsbSpecified ) {
                        ret.Add( new NrpnData( item.Clock, 0x26, item.DataLsb ) );
                    }
                }
            }
            return ret.ToArray();
        }

        public int CompareTo( VsqNrpn item ) {
            return Clock - item.Clock;
        }

        public void append( ushort nrpn, byte data_msb ) {
            m_list.Add( new VsqNrpn( Clock, nrpn, data_msb ) );
        }

        public void append( ushort nrpn, byte data_msb, byte data_lsb ) {
            m_list.Add( new VsqNrpn( Clock, nrpn, data_msb, data_lsb ) );
        }

        public void append( ushort nrpn, byte data_msb, bool msb_omit_required ) {
            VsqNrpn v = new VsqNrpn( Clock, nrpn, data_msb );
            v.msbOmitRequired = msb_omit_required;
            m_list.Add( v );
        }

        public void append( ushort nrpn, byte data_msb, byte data_lsb, bool msb_omit_required ) {
            VsqNrpn v = new VsqNrpn( Clock, nrpn, data_msb, data_lsb );
            v.msbOmitRequired = msb_omit_required;
            m_list.Add( v );
        }
    }

}