/*
    Copyright (C) 2005 Paul Davis 
    Written by Taybin Rutkin

    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.


*/

#include <gtkmm/box.h>
#include <gtkmm/stock.h>

#include <ardour/audio_library.h>
#include <ardour/sndfile_helpers.h>

#include "sfdb_ui.h"

#include "i18n.h"

std::string length2string (const int32_t frames, const int32_t sample_rate);

SoundFileBox::SoundFileBox ()
	:
	_session(0),
	current_pid(0),
	fields(Gtk::ListStore::create(label_columns)),
	main_box (false, 3),
	top_box (true, 4),
	bottom_box (true, 4),
	play_btn(_("Play")),
	stop_btn(_("Stop")),
	add_field_btn(_("Add Field...")),
	remove_field_btn(_("Remove Field"))
{
	set_name (X_("SoundFileBox"));
	border_frame.set_label (_("Soundfile Info"));
	border_frame.add (main_box);

	pack_start (border_frame);
	set_border_width (4);

	path_box.set_spacing (4);
	path_box.pack_start (path, false, false);
	path_box.pack_start (path_entry, true, true);

	main_box.set_border_width (4);

	main_box.pack_start(label, false, false);
	main_box.pack_start(path_box, false, false);
	main_box.pack_start(length, false, false);
	main_box.pack_start(format, false, false);
	main_box.pack_start(channels, false, false);
	main_box.pack_start(samplerate, false, false);
	main_box.pack_start(field_view, true, true);
	main_box.pack_start(top_box, false, false);
	main_box.pack_start(bottom_box, false, false);

	field_view.set_size_request(200, 150);
	top_box.set_homogeneous(true);
	top_box.pack_start(add_field_btn);
	top_box.pack_start(remove_field_btn);

	remove_field_btn.set_sensitive(false);

	bottom_box.set_homogeneous(true);
	bottom_box.pack_start(play_btn);
	bottom_box.pack_start(stop_btn);

	play_btn.signal_clicked().connect (mem_fun (*this, &SoundFileBox::play_btn_clicked));
	stop_btn.signal_clicked().connect (mem_fun (*this, &SoundFileBox::stop_btn_clicked));

	add_field_btn.signal_clicked().connect
	                (mem_fun (*this, &SoundFileBox::add_field_clicked));
	remove_field_btn.signal_clicked().connect
	                (mem_fun (*this, &SoundFileBox::remove_field_clicked));

	field_view.get_selection()->signal_changed().connect (mem_fun (*this, &SoundFileBox::field_selected));
	ARDOUR::Library->fields_changed.connect (mem_fun (*this, &SoundFileBox::setup_fields));

	show_all();
	stop_btn.hide();
}

void
SoundFileBox::set_session(ARDOUR::Session* s)
{
	_session = s;

    if (!_session) {
		play_btn.set_sensitive(false);
	} else {
		_session->AuditionActive.connect(mem_fun (*this, &SoundFileBox::audition_status_changed));
	}
}

int
SoundFileBox::setup_labels (string filename) 
{
    SNDFILE *sf;

    if ((sf = sf_open ((char *) filename.c_str(), SFM_READ, &sf_info)) < 0) {
        error << string_compose(_("file \"%1\" could not be opened"), filename) << endmsg;
        return -1;
    }

    if (sf_info.frames == 0 && sf_info.channels == 0 &&
		sf_info.samplerate == 0 && sf_info.format == 0 &&
	   	sf_info.sections == 0) {
		/* .. ok, its not a sound file */
	    error << string_compose(_("file \"%1\" appears not to be an audio file"), filename) << endmsg;
	    return -1;
	}

	label.set_alignment (0.0f, 0.0f);
    label.set_text ("Label: " + ARDOUR::Library->get_label(filename));

	path.set_text ("Path: ");
	path_entry.set_text (filename);
	path_entry.set_position (-1);

	length.set_alignment (0.0f, 0.0f);
	length.set_text (string_compose("Length: %1", length2string(sf_info.frames, sf_info.samplerate)));

	format.set_alignment (0.0f, 0.0f);
	format.set_text (string_compose("Format: %1, %2", 
				sndfile_major_format(sf_info.format),
				sndfile_minor_format(sf_info.format)));

	channels.set_alignment (0.0f, 0.0f);
	channels.set_text (string_compose("Channels: %1", sf_info.channels));

	samplerate.set_alignment (0.0f, 0.0f);
	samplerate.set_text (string_compose("Samplerate: %1", sf_info.samplerate));

	return 0;
}

void
SoundFileBox::setup_fields ()
{}

void
SoundFileBox::play_btn_clicked ()
{}

void
SoundFileBox::stop_btn_clicked ()
{}

void
SoundFileBox::add_field_clicked ()
{}

void
SoundFileBox::remove_field_clicked ()
{}

void
SoundFileBox::audition_status_changed (bool state)
{}

void
SoundFileBox::field_selected ()
{}

bool
SoundFileBox::update (std::string filename)
{
	return true;
}

SoundFileBrowser::SoundFileBrowser (std::string title)
	:
	ArdourDialog(title),
	chooser(Gtk::FILE_CHOOSER_ACTION_OPEN)
{
	get_vbox()->pack_start(chooser);
	chooser.set_preview_widget(preview);

	chooser.signal_update_preview().connect(mem_fun(*this, &SoundFileBrowser::update_preview));
}

void
SoundFileBrowser::set_session (ARDOUR::Session* s)
{
	preview.set_session(s);
}

void
SoundFileBrowser::update_preview ()
{
	chooser.set_preview_widget_active(preview.update(chooser.get_filename()));
}

SoundFileChooser::SoundFileChooser (std::string title)
	:
	SoundFileBrowser(title)
{
	add_button (Gtk::Stock::OPEN, Gtk::RESPONSE_OK);
	add_button (Gtk::Stock::CANCEL, Gtk::RESPONSE_CANCEL);
}

SoundFileOmega::SoundFileOmega (std::string title)
	:
	SoundFileBrowser(title),
	embed_btn (_("Embed")),
	import_btn (_("Import")),
	split_check (_("Split Channels"))
{
	get_action_area()->pack_start(embed_btn);
	get_action_area()->pack_start(import_btn);
	add_button (Gtk::Stock::CLOSE, Gtk::RESPONSE_CLOSE);

	chooser.set_extra_widget(split_check);

	embed_btn.signal_clicked().connect (mem_fun (*this, &SoundFileOmega::embed_clicked));
	import_btn.signal_clicked().connect (mem_fun (*this, &SoundFileOmega::import_clicked));
}

void
SoundFileOmega::embed_clicked ()
{
	Embedded (chooser.get_filenames(), split_check.get_active());
}

void
SoundFileOmega::import_clicked ()
{
	Imported (chooser.get_filenames(), split_check.get_active());
}

std::string
length2string (const int32_t frames, const int32_t sample_rate)
{
    int secs = (int) (frames / (float) sample_rate);
    int hrs =  secs / 3600;
    secs -= (hrs * 3600);
    int mins = secs / 60;
    secs -= (mins * 60);

    int total_secs = (hrs * 3600) + (mins * 60) + secs;
    int frames_remaining = frames - (total_secs * sample_rate);
    float fractional_secs = (float) frames_remaining / sample_rate;

    char duration_str[32];
    sprintf (duration_str, "%02d:%02d:%05.2f", hrs, mins, (float) secs + fractional_secs);

    return duration_str;
}