/*
    Copyright (C) 2014 Paul Davis
    Author: David Robillard

    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 "ardour/value_as_string.h"

namespace ARDOUR {

std::string
value_as_string(const Evoral::ParameterDescriptor& desc,
                double                             v)
{
	char buf[32];

	if (desc.scale_points) {
		// Check if value is on a scale point
		for (Evoral::ScalePoints::const_iterator i = desc.scale_points->begin();
		     i != desc.scale_points->end();
		     ++i) {
			if (i->second == v) {
				return i->first;  // Found it, return scale point label
			}
		}
	}

	// Value is not a scale point, print it normally
	if (desc.unit == Evoral::ParameterDescriptor::MIDI_NOTE) {
		if (v >= 0 && v <= 127) {
			const int         num          = rint(v);
			static const char names[12][3] = {
				"C", "C#", "D", "D#", "E", "F", "F#", "G", "G#", "A", "A#", "B"
			};
			snprintf(buf, sizeof(buf), "%s %d", names[num % 12], (num / 12) - 2);
		} else {
			// Odd, invalid range, just print the number
			snprintf(buf, sizeof(buf), "%.0f", v);
		}
	} else if (!desc.print_fmt.empty()) {
		snprintf(buf, sizeof(buf), desc.print_fmt.c_str(), v);
	} else if (desc.integer_step) {
		snprintf(buf, sizeof(buf), "%d", (int)v);
	} else {
		snprintf(buf, sizeof(buf), "%.3f", v);
	}
	if (desc.print_fmt.empty() && desc.unit == Evoral::ParameterDescriptor::DB) {
		// TODO: Move proper dB printing from AutomationLine here
		return std::string(buf) + " dB";
	}
	return buf;
}

std::string
value_as_string(const Evoral::ParameterDescriptor& desc,
                const Evoral::Variant&             val)
{
	// Only numeric support, for now
	return value_as_string(desc, val.to_double());
}

}  // namespace ARDOUR