/*
    Copyright (C) 2008 Hans Baier

    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation; either version 2 of the License, or
    (at your option) any later version.

    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 for more details.

    You should have received a copy of the GNU General Public License
    along with this program; if not, write to the Free Software
    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.

    $Id$
*/

#include <algorithm>
#include <iostream>

#include "midi++/midnam_patch.h"
#include "pbd/compose.h"
#include "pbd/convert.h"
#include "pbd/error.h"
#include "pbd/failed_constructor.h"

using namespace std;
using PBD::error;

namespace MIDI
{

namespace Name
{

Patch::Patch (PatchBank* b)
{
	use_bank_info (b);
}

Patch::Patch (std::string a_number, std::string a_name, PatchBank* a_bank)
	: _number (a_number)
	, _name (a_name)
{
	use_bank_info (a_bank);
}

XMLNode&
Patch::get_state (void)
{
	XMLNode* node = new XMLNode("Patch");
	node->add_property("Number", _number);
	node->add_property("Name",   _name);
	/*
	typedef std::list< boost::shared_ptr< Evoral::MIDIEvent<double> > > PatchMidiCommands;
	XMLNode* commands = node->add_child("PatchMIDICommands");
	for (PatchMidiCommands::const_iterator event = _patch_midi_commands.begin();
	    event != _patch_midi_commands.end();
	    ++event) {
		commands->add_child_copy(*((((Evoral::MIDIEvent&)*event)).to_xml()));
	}
	*/

	return *node;
}

int initialize_primary_key_from_commands (PatchPrimaryKey& id, const XMLNode* node)
{
	const XMLNodeList events = node->children();
	for (XMLNodeList::const_iterator i = events.begin(); i != events.end(); ++i) {
		XMLNode* node = *i;
		if (node->name() == "ControlChange") {
			string control = node->property("Control")->value();
			assert(control != "");
			string value = node->property("Value")->value();
			assert(value != "");

			if (control == "0") {
				id.msb = PBD::atoi(value);
			} else if (control == "32") {
				id.lsb = PBD::atoi(value);
			}
		} else if (node->name() == "ProgramChange") {
			string number = node->property("Number")->value();
			assert(number != "");
			id.program_number = PBD::atoi(number);
		}
	}

	return 0;
}

int
Patch::set_state (const XMLTree&, const XMLNode& node)
{
	if (node.name() != "Patch") {
		cerr << "Incorrect node " << node.name() << " handed to Patch" << endl;
		return -1;
	}

	const XMLProperty* prop = node.property ("Number");

	if (!prop) {
		return -1;
	}
	_number = prop->value();

	prop = node.property ("Name");

	if (!prop) {
		return -1;
	}
	_name   = prop->value();

	XMLNode* commands = node.child("PatchMIDICommands");

	if (commands) {
		if (initialize_primary_key_from_commands(_id, commands)) {
			return -1;
		}
	} else {
		string program_change = node.property("ProgramChange")->value();
		assert(program_change.length());
		_id.program_number = PBD::atoi(program_change);
	}

	return 0;
}

int
Patch::use_bank_info (PatchBank* bank)
{
	if (bank) {
		if (bank->patch_primary_key() ) {
			_id.msb = bank->patch_primary_key()->msb;
			_id.lsb = bank->patch_primary_key()->lsb;
		} else {
			return -1;
		}
	}

	if (!_id.is_sane()) {
		return -1;
	}

	return 0;
}

XMLNode&
Note::get_state (void)
{
	XMLNode* node = new XMLNode("Note");
	node->add_property("Number", _number);
	node->add_property("Name",   _name);

	return *node;
}

int
Note::set_state (const XMLTree&, const XMLNode& node)
{
	assert(node.name() == "Note");
	_number = node.property("Number")->value();
	_name   = node.property("Name")->value();

	return 0;
}

XMLNode&
NoteNameList::get_state (void)
{
	XMLNode* node = new XMLNode("NoteNameList");
	node->add_property("Name",   _name);

	return *node;
}

int
NoteNameList::set_state (const XMLTree& tree, const XMLNode& node)
{
	assert(node.name() == "NoteNameList");
	_name   = node.property("Name")->value();

	boost::shared_ptr<XMLSharedNodeList> notes = tree.find("//Note");
	for (XMLSharedNodeList::const_iterator i = notes->begin(); i != notes->end(); ++i) {
		boost::shared_ptr<Note> note(new Note());
		note->set_state (tree, *(*i));
		_notes.push_back(note);
	}

	return 0;
}


XMLNode&
PatchBank::get_state (void)
{
	XMLNode* node = new XMLNode("PatchBank");
	node->add_property("Name",   _name);
	XMLNode* patch_name_list = node->add_child("PatchNameList");
	for (PatchNameList::iterator patch = _patch_name_list.begin();
	    patch != _patch_name_list.end();
	    ++patch) {
		patch_name_list->add_child_nocopy((*patch)->get_state());
	}

	return *node;
}

int
PatchBank::set_state (const XMLTree& tree, const XMLNode& node)
{
	assert(node.name() == "PatchBank");
	_name   = node.property("Name")->value();

	XMLNode* commands = node.child("MIDICommands");
	if (commands) {
		_id = new PatchPrimaryKey();
		if (initialize_primary_key_from_commands(*_id, commands)) {
			return -1;
		}
	}

	XMLNode* patch_name_list = node.child("PatchNameList");

	if (patch_name_list) {
		const XMLNodeList patches = patch_name_list->children();
		for (XMLNodeList::const_iterator i = patches.begin(); i != patches.end(); ++i) {
			boost::shared_ptr<Patch> patch(new Patch(this));
			patch->set_state(tree, *(*i));
			_patch_name_list.push_back(patch);
		}
	} else {
		XMLNode* use_patch_name_list = node.child ("UsesPatchNameList");
		if (use_patch_name_list) {
			_patch_list_name = node.property ("Name")->value();
		} else {
			error << "Patch without patch name list - patchfile will be ignored" << endmsg;
			return -1;
		}
	}

	return 0;
}

int
PatchBank::set_patch_name_list (const PatchNameList& pnl)
{
	_patch_name_list = pnl;
	_patch_list_name = "";
	
	for (PatchNameList::iterator p = _patch_name_list.begin(); p != _patch_name_list.end(); p++) {
		if ((*p)->use_bank_info (this)) {
			return -1;
		}
	}

	return 0;
}

XMLNode&
ChannelNameSet::get_state (void)
{
	XMLNode* node = new XMLNode("ChannelNameSet");
	node->add_property("Name",   _name);

	XMLNode* available_for_channels = node->add_child("AvailableForChannels");
	assert(available_for_channels);

	for (uint8_t channel = 0; channel < 16; ++channel) {
		XMLNode* available_channel = available_for_channels->add_child("AvailableChannel");
		assert(available_channel);

		available_channel->add_property("Channel", (long) channel);

		if (_available_for_channels.find(channel) != _available_for_channels.end()) {
			available_channel->add_property("Available", "true");
		} else {
			available_channel->add_property("Available", "false");
		}
	}

	for (PatchBanks::iterator patch_bank = _patch_banks.begin();
	    patch_bank != _patch_banks.end();
	    ++patch_bank) {
		node->add_child_nocopy((*patch_bank)->get_state());
	}

	return *node;
}

int
ChannelNameSet::set_state (const XMLTree& tree, const XMLNode& node)
{
	assert(node.name() == "ChannelNameSet");
	_name   = node.property("Name")->value();
	const XMLNodeList children = node.children();
	for (XMLNodeList::const_iterator i = children.begin(); i != children.end(); ++i) {
		XMLNode* node = *i;
		assert(node);
		if (node->name() == "AvailableForChannels") {
			boost::shared_ptr<XMLSharedNodeList> channels =
				tree.find("//AvailableChannel[@Available = 'true']/@Channel");
			for(XMLSharedNodeList::const_iterator i = channels->begin();
			    i != channels->end();
			    ++i) {
				_available_for_channels.insert(atoi((*i)->attribute_value().c_str()));
			}
		}

		if (node->name() == "PatchBank") {
			boost::shared_ptr<PatchBank> bank(new PatchBank());
			bank->set_state(tree, *node);
			_patch_banks.push_back(bank);
			const PatchBank::PatchNameList& patches = bank->patch_name_list();
			for (PatchBank::PatchNameList::const_iterator patch = patches.begin();
			     patch != patches.end();
			     ++patch) {
				_patch_map[(*patch)->patch_primary_key()] = *patch;
				_patch_list.push_back((*patch)->patch_primary_key());
			}
		}
	}

	return 0;
}

int
CustomDeviceMode::set_state(const XMLTree& tree, const XMLNode& a_node)
{
	assert(a_node.name() == "CustomDeviceMode");

	_name = a_node.property("Name")->value();

	boost::shared_ptr<XMLSharedNodeList> channel_name_set_assignments =
		tree.find("//ChannelNameSetAssign");
	for(XMLSharedNodeList::const_iterator i = channel_name_set_assignments->begin();
	    i != channel_name_set_assignments->end();
	    ++i) {
		int channel = atoi((*i)->property("Channel")->value().c_str());
		string name_set = (*i)->property("NameSet")->value();
		assert( 1 <= channel && channel <= 16 );
		_channel_name_set_assignments[channel - 1] = name_set;
	}
	return 0;
}

XMLNode&
CustomDeviceMode::get_state(void)
{
	XMLNode* custom_device_mode = new XMLNode("CustomDeviceMode");
	custom_device_mode->add_property("Name",   _name);
	XMLNode* channel_name_set_assignments =
		custom_device_mode->add_child("ChannelNameSetAssignments");
	for (int i = 0; i < 15 && !_channel_name_set_assignments[i].empty(); i++) {
		XMLNode* channel_name_set_assign =
			channel_name_set_assignments->add_child("ChannelNameSetAssign");
		channel_name_set_assign->add_property("Channel", i + 1);
		channel_name_set_assign->add_property("NameSet", _channel_name_set_assignments[i]);
	}

	return *custom_device_mode;
}

int
MasterDeviceNames::set_state(const XMLTree& tree, const XMLNode& a_node)
{
	// Manufacturer
	boost::shared_ptr<XMLSharedNodeList> manufacturer = tree.find("//Manufacturer");
	assert(manufacturer->size() == 1);
	_manufacturer = manufacturer->front()->content();

	// Models
	boost::shared_ptr<XMLSharedNodeList> models = tree.find("//Model");
	assert(models->size() >= 1);
	for (XMLSharedNodeList::iterator i = models->begin();
	     i != models->end();
	     ++i) {
		const XMLNodeList& contents = (*i)->children();
		assert(contents.size() == 1);
		XMLNode * content = *(contents.begin());
		assert(content->is_content());
		_models.push_back(content->content());
	}

	// CustomDeviceModes
	boost::shared_ptr<XMLSharedNodeList> custom_device_modes = tree.find("//CustomDeviceMode");
	for (XMLSharedNodeList::iterator i = custom_device_modes->begin();
	     i != custom_device_modes->end();
	     ++i) {
		boost::shared_ptr<CustomDeviceMode> custom_device_mode(new CustomDeviceMode());
		custom_device_mode->set_state(tree, *(*i));

		_custom_device_modes[custom_device_mode->name()] = custom_device_mode;
		_custom_device_mode_names.push_back(custom_device_mode->name());
	}

	// ChannelNameSets
	boost::shared_ptr<XMLSharedNodeList> channel_name_sets = tree.find("//ChannelNameSet");
	for (XMLSharedNodeList::iterator i = channel_name_sets->begin();
	     i != channel_name_sets->end();
	     ++i) {
		boost::shared_ptr<ChannelNameSet> channel_name_set(new ChannelNameSet());
		channel_name_set->set_state(tree, *(*i));
		_channel_name_sets[channel_name_set->name()] = channel_name_set;
	}

	// NoteNameLists
	boost::shared_ptr<XMLSharedNodeList> note_name_lists = tree.find("//NoteNameList");
	for (XMLSharedNodeList::iterator i = note_name_lists->begin();
	     i != note_name_lists->end();
	     ++i) {
		boost::shared_ptr<NoteNameList> note_name_list(new NoteNameList());
		note_name_list->set_state (tree, *(*i));
		_note_name_lists.push_back(note_name_list);
	}

	// global/post-facto PatchNameLists
	boost::shared_ptr<XMLSharedNodeList> patch_name_lists = tree.find("/child::MIDINameDocument/child::MasterDeviceNames/child::PatchNameList");
	for (XMLSharedNodeList::iterator i = patch_name_lists->begin();
	     i != patch_name_lists->end();
	     ++i) {

		PatchBank::PatchNameList patch_name_list;
		const XMLNodeList patches = (*i)->children();

		for (XMLNodeList::const_iterator p = patches.begin(); p != patches.end(); ++p) {
			boost::shared_ptr<Patch> patch(new Patch());
			patch->set_state(tree, *(*p));
			patch_name_list.push_back(patch);
		}

		if (!patch_name_list.empty()) {
			_patch_name_lists[(*i)->property ("Name")->value()] = patch_name_list;
		}
	}

	/* now traverse patches and hook up anything that used UsePatchNameList
	 * to the right patch list
	 */

	for (ChannelNameSets::iterator cns = _channel_name_sets.begin(); cns != _channel_name_sets.end(); ++cns) {
		ChannelNameSet::PatchBanks pbs = cns->second->patch_banks();
		for (ChannelNameSet::PatchBanks::iterator pb = pbs.begin(); pb != pbs.end(); ++pb) {
			std::string pln = (*pb)->patch_list_name();
			if (!pln.empty()) {
				PatchNameLists::iterator p = _patch_name_lists.find (pln);
				if (p != _patch_name_lists.end()) {
					if ((*pb)->set_patch_name_list (p->second)) {
						return -1;
					}
				} else {
					error << string_compose ("Patch list name %1 was not found - patch file ignored", pln) << endmsg;
					return -1;
				}
			}
		}
	}

	return 0;
}

XMLNode&
MasterDeviceNames::get_state(void)
{
	static XMLNode nothing("<nothing>");
	return nothing;
}

MIDINameDocument::MIDINameDocument (const string& filename)
{
	if (!_document.read (filename)) {
		throw failed_constructor ();
	}
	
	set_state (_document, *_document.root());
}

int
MIDINameDocument::set_state (const XMLTree& tree, const XMLNode& a_node)
{
	// Author

	boost::shared_ptr<XMLSharedNodeList> author = tree.find("//Author");
	if (author->size() < 1) {
		error << "No author information in MIDNAM file" << endmsg;
		return -1;
	}
	_author = author->front()->content();

	// MasterDeviceNames

	boost::shared_ptr<XMLSharedNodeList> master_device_names_list = tree.find ("//MasterDeviceNames");

	for (XMLSharedNodeList::iterator i = master_device_names_list->begin();
	     i != master_device_names_list->end();
	     ++i) {
		boost::shared_ptr<MasterDeviceNames> master_device_names(new MasterDeviceNames());

		if (master_device_names->set_state(tree, *(*i))) {
			return -1;
		}

		for (MasterDeviceNames::Models::const_iterator model = master_device_names->models().begin();
		     model != master_device_names->models().end();
		     ++model) {
			_master_device_names_list.insert(
				std::pair<std::string, boost::shared_ptr<MasterDeviceNames> >
				(*model,      master_device_names));
			
			_all_models.push_back(*model);
		}
	}

	return 0;
}

XMLNode&
MIDINameDocument::get_state(void)
{
	static XMLNode nothing("<nothing>");
	return nothing;
}


} //namespace Name

} //namespace MIDI