/*
  ZynAddSubFX - a software synthesizer

  Config.cpp - Configuration file functions
  Copyright (C) 2003-2005 Nasca Octavian Paul
  Author: Nasca Octavian Paul

  This program is free software; you can redistribute it and/or modify
  it under the terms of version 2 of the GNU General Public License
  as published by the Free Software Foundation.

  This program 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.  See the
  GNU General Public License (version 2 or later) for more details.

  You should have received a copy of the GNU General Public License (version 2)
  along with this program; if not, write to the Free Software Foundation,
  Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA

*/
#include <stdio.h>
#include <math.h>
#include <stdlib.h>
#include <string.h>


#include "Config.h"
#include "XMLwrapper.h"

using namespace std;

Config::Config()
{}
void Config::init()
{
    maxstringsize = MAX_STRING_SIZE; //for ui
    //defaults
    cfg.SampleRate      = 44100;
    cfg.SoundBufferSize = 256;
    cfg.OscilSize  = 1024;
    cfg.SwapStereo = 0;

    cfg.LinuxOSSWaveOutDev = new char[MAX_STRING_SIZE];
    snprintf(cfg.LinuxOSSWaveOutDev, MAX_STRING_SIZE, "/dev/dsp");
    cfg.LinuxOSSSeqInDev = new char[MAX_STRING_SIZE];
    snprintf(cfg.LinuxOSSSeqInDev, MAX_STRING_SIZE, "/dev/sequencer");

    cfg.DumpFile = "zynaddsubfx_dump.txt";

    cfg.WindowsWaveOutId = 0;
    cfg.WindowsMidiInId  = 0;

    cfg.BankUIAutoClose = 0;
    cfg.DumpNotesToFile = 0;
    cfg.DumpAppend      = 1;

    cfg.GzipCompression = 3;

    cfg.Interpolation = 0;
    cfg.CheckPADsynth = 1;
    cfg.IgnoreProgramChange = 0;

    cfg.UserInterfaceMode = 0;
    cfg.VirKeybLayout     = 1;
    winwavemax = 1;
    winmidimax = 1;
    //try to find out how many input midi devices are there
    winmididevices = new winmidionedevice[winmidimax];
    for(int i = 0; i < winmidimax; ++i) {
        winmididevices[i].name = new char[MAX_STRING_SIZE];
        for(int j = 0; j < MAX_STRING_SIZE; ++j)
            winmididevices[i].name[j] = '\0';
    }


//get the midi input devices name
    cfg.currentBankDir = "./testbnk";

    char filename[MAX_STRING_SIZE];
    getConfigFileName(filename, MAX_STRING_SIZE);
    readConfig(filename);

    if(cfg.bankRootDirList[0].empty()) {
        //banks
        cfg.bankRootDirList[0] = "~/banks";
        cfg.bankRootDirList[1] = "./";
        cfg.bankRootDirList[2] = "/usr/share/zynaddsubfx/banks";
        cfg.bankRootDirList[3] = "/usr/local/share/zynaddsubfx/banks";
        cfg.bankRootDirList[4] = "../banks";
        cfg.bankRootDirList[5] = "banks";
    }

    if(cfg.presetsDirList[0].empty()) {
        //presets
        cfg.presetsDirList[0] = "./";
        cfg.presetsDirList[1] = "../presets";
        cfg.presetsDirList[2] = "presets";
        cfg.presetsDirList[3] = "/usr/share/zynaddsubfx/presets";
        cfg.presetsDirList[4] = "/usr/local/share/zynaddsubfx/presets";
    }
    cfg.LinuxALSAaudioDev = "default";
    cfg.nameTag = "";
}

Config::~Config()
{
    delete [] cfg.LinuxOSSWaveOutDev;
    delete [] cfg.LinuxOSSSeqInDev;

    for(int i = 0; i < winmidimax; ++i)
        delete [] winmididevices[i].name;
    delete [] winmididevices;
}


void Config::save()
{
    char filename[MAX_STRING_SIZE];
    getConfigFileName(filename, MAX_STRING_SIZE);
    saveConfig(filename);
}

void Config::clearbankrootdirlist()
{
    for(int i = 0; i < MAX_BANK_ROOT_DIRS; ++i)
        cfg.bankRootDirList[i].clear();
}

void Config::clearpresetsdirlist()
{
    for(int i = 0; i < MAX_BANK_ROOT_DIRS; ++i)
        cfg.presetsDirList[i].clear();
}

void Config::readConfig(const char *filename)
{
    XMLwrapper xmlcfg;
    if(xmlcfg.loadXMLfile(filename) < 0)
        return;
    if(xmlcfg.enterbranch("CONFIGURATION")) {
        cfg.SampleRate = xmlcfg.getpar("sample_rate",
                                       cfg.SampleRate,
                                       4000,
                                       1024000);
        cfg.SoundBufferSize = xmlcfg.getpar("sound_buffer_size",
                                            cfg.SoundBufferSize,
                                            16,
                                            8192);
        cfg.OscilSize = xmlcfg.getpar("oscil_size",
                                      cfg.OscilSize,
                                      MAX_AD_HARMONICS * 2,
                                      131072);
        cfg.SwapStereo = xmlcfg.getpar("swap_stereo",
                                       cfg.SwapStereo,
                                       0,
                                       1);
        cfg.BankUIAutoClose = xmlcfg.getpar("bank_window_auto_close",
                                            cfg.BankUIAutoClose,
                                            0,
                                            1);

        cfg.DumpNotesToFile = xmlcfg.getpar("dump_notes_to_file",
                                            cfg.DumpNotesToFile,
                                            0,
                                            1);
        cfg.DumpAppend = xmlcfg.getpar("dump_append",
                                       cfg.DumpAppend,
                                       0,
                                       1);
        cfg.DumpFile = xmlcfg.getparstr("dump_file", "");

        cfg.GzipCompression = xmlcfg.getpar("gzip_compression",
                                            cfg.GzipCompression,
                                            0,
                                            9);

        cfg.currentBankDir = xmlcfg.getparstr("bank_current", "");
        cfg.Interpolation  = xmlcfg.getpar("interpolation",
                                           cfg.Interpolation,
                                           0,
                                           1);

        cfg.CheckPADsynth = xmlcfg.getpar("check_pad_synth",
                                          cfg.CheckPADsynth,
                                          0,
                                          1);

        cfg.IgnoreProgramChange = xmlcfg.getpar("ignore_program_change",
                                          cfg.IgnoreProgramChange,
                                          0,
                                          1);


        cfg.UserInterfaceMode = xmlcfg.getpar("user_interface_mode",
                                              cfg.UserInterfaceMode,
                                              0,
                                              2);
        cfg.VirKeybLayout = xmlcfg.getpar("virtual_keyboard_layout",
                                          cfg.VirKeybLayout,
                                          0,
                                          10);

        //get bankroot dirs
        for(int i = 0; i < MAX_BANK_ROOT_DIRS; ++i)
            if(xmlcfg.enterbranch("BANKROOT", i)) {
                cfg.bankRootDirList[i] = xmlcfg.getparstr("bank_root", "");
                xmlcfg.exitbranch();
            }

        //get preset root dirs
        for(int i = 0; i < MAX_BANK_ROOT_DIRS; ++i)
            if(xmlcfg.enterbranch("PRESETSROOT", i)) {
                cfg.presetsDirList[i] = xmlcfg.getparstr("presets_root", "");
                xmlcfg.exitbranch();
            }

        //linux stuff
        xmlcfg.getparstr("linux_oss_wave_out_dev",
                         cfg.LinuxOSSWaveOutDev,
                         MAX_STRING_SIZE);
        xmlcfg.getparstr("linux_oss_seq_in_dev",
                         cfg.LinuxOSSSeqInDev,
                         MAX_STRING_SIZE);

        //windows stuff
        cfg.WindowsWaveOutId = xmlcfg.getpar("windows_wave_out_id",
                                             cfg.WindowsWaveOutId,
                                             0,
                                             winwavemax);
        cfg.WindowsMidiInId = xmlcfg.getpar("windows_midi_in_id",
                                            cfg.WindowsMidiInId,
                                            0,
                                            winmidimax);

        xmlcfg.exitbranch();
    }

    cfg.OscilSize = (int) powf(2, ceil(logf(cfg.OscilSize - 1.0f) / logf(2.0f)));
}

void Config::saveConfig(const char *filename)
{
    XMLwrapper *xmlcfg = new XMLwrapper();

    xmlcfg->beginbranch("CONFIGURATION");

    xmlcfg->addpar("sample_rate", cfg.SampleRate);
    xmlcfg->addpar("sound_buffer_size", cfg.SoundBufferSize);
    xmlcfg->addpar("oscil_size", cfg.OscilSize);
    xmlcfg->addpar("swap_stereo", cfg.SwapStereo);
    xmlcfg->addpar("bank_window_auto_close", cfg.BankUIAutoClose);

    xmlcfg->addpar("dump_notes_to_file", cfg.DumpNotesToFile);
    xmlcfg->addpar("dump_append", cfg.DumpAppend);
    xmlcfg->addparstr("dump_file", cfg.DumpFile);

    xmlcfg->addpar("gzip_compression", cfg.GzipCompression);

    xmlcfg->addpar("check_pad_synth", cfg.CheckPADsynth);
    xmlcfg->addpar("ignore_program_change", cfg.IgnoreProgramChange);

    xmlcfg->addparstr("bank_current", cfg.currentBankDir);

    xmlcfg->addpar("user_interface_mode", cfg.UserInterfaceMode);
    xmlcfg->addpar("virtual_keyboard_layout", cfg.VirKeybLayout);


    for(int i = 0; i < MAX_BANK_ROOT_DIRS; ++i)
        if(!cfg.bankRootDirList[i].empty()) {
            xmlcfg->beginbranch("BANKROOT", i);
            xmlcfg->addparstr("bank_root", cfg.bankRootDirList[i]);
            xmlcfg->endbranch();
        }

    for(int i = 0; i < MAX_BANK_ROOT_DIRS; ++i)
        if(!cfg.presetsDirList[i].empty()) {
            xmlcfg->beginbranch("PRESETSROOT", i);
            xmlcfg->addparstr("presets_root", cfg.presetsDirList[i]);
            xmlcfg->endbranch();
        }

    xmlcfg->addpar("interpolation", cfg.Interpolation);

    //linux stuff
    xmlcfg->addparstr("linux_oss_wave_out_dev", cfg.LinuxOSSWaveOutDev);
    xmlcfg->addparstr("linux_oss_seq_in_dev", cfg.LinuxOSSSeqInDev);

    //windows stuff
    xmlcfg->addpar("windows_wave_out_id", cfg.WindowsWaveOutId);
    xmlcfg->addpar("windows_midi_in_id", cfg.WindowsMidiInId);

    xmlcfg->endbranch();

    int tmp = cfg.GzipCompression;
    cfg.GzipCompression = 0;
    xmlcfg->saveXMLfile(filename);
    cfg.GzipCompression = tmp;

    delete (xmlcfg);
}

void Config::getConfigFileName(char *name, int namesize)
{
    name[0] = 0;
    snprintf(name, namesize, "%s%s", getenv("HOME"), "/.zynaddsubfxXML.cfg");
}