/*
 *  mdaParameter.cpp
 *  mda-vst3
 *
 *  Created by Arne Scheffler on 6/15/08.
 *
 *  mda VST Plug-ins
 *
 *  Copyright (c) 2008 Paul Kellett
 *
 *  Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
 *  The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
 *  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 *
 */

#include "mdaParameter.h"
#include "pluginterfaces/base/futils.h"

namespace Steinberg {
namespace Vst {
namespace mda {

//-----------------------------------------------------------------------------
BaseParameter::BaseParameter (const TChar* title, const TChar* units, int32 stepCount, ParamValue defaultValueNormalized, int32 flags, int32 tag, UnitID unitID)
{
	Steinberg::UString (info.title, USTRINGSIZE (info.title)).assign (title);
	Steinberg::UString uUnits (info.units, USTRINGSIZE (info.units));
	if (units)
	{
		uUnits.assign (units);
	}

	info.stepCount = stepCount;
	info.defaultNormalizedValue = defaultValueNormalized;
	info.flags = flags;
	info.id = tag;
	info.unitId = unitID;
}

//-----------------------------------------------------------------------------
bool BaseParameter::fromString (const TChar* string, ParamValue& _valueNormalized) const
{
	UString wrapper ((TChar*)string, USTRINGSIZE (String128));
	double value;
	if (wrapper.scanFloat (value))
	{
		if (value < 0)
			value = 0;
		else if (value > 1)
			value = 1;
		_valueNormalized = toNormalized (value);
		return true;
	}
	return false;
}

//-----------------------------------------------------------------------------
bool BaseParameter::setNormalized (ParamValue v)
{
	return Parameter::setNormalized (v);
}

//-----------------------------------------------------------------------------
//-----------------------------------------------------------------------------
//-----------------------------------------------------------------------------
IndexedParameter::IndexedParameter (const TChar* title, const TChar* units, int32 stepCount, ParamValue defaultValueNormalized, int32 flags, int32 tag, UnitID unitID)
: BaseParameter (title, units, stepCount, defaultValueNormalized, flags, tag, unitID)
, indexString (nullptr)
{
	indexString = new String128[stepCount+1];
	for (int32 i = 0; i <= stepCount; i++)
		indexString[i][0] = 0;
}

//-----------------------------------------------------------------------------
IndexedParameter::~IndexedParameter ()
{
	delete[] indexString;
}

//-----------------------------------------------------------------------------
ParamValue IndexedParameter::toPlain (ParamValue _valueNormalized) const
{
	return (ParamValue) (FromNormalized<ParamValue> (_valueNormalized, info.stepCount));
}

//-----------------------------------------------------------------------------
ParamValue IndexedParameter::toNormalized (ParamValue plainValue) const
{
	return ToNormalized<ParamValue> (plainValue, info.stepCount);
}

//-----------------------------------------------------------------------------
void IndexedParameter::toString (ParamValue _valueNormalized, String128 string) const
{
	memcpy (string, indexString[(int32)toPlain (_valueNormalized)], 128 * sizeof (TChar));
}

//-----------------------------------------------------------------------------
bool IndexedParameter::fromString (const TChar* string, ParamValue& _valueNormalized) const
{
	if (string[0] == 0)
		return false;

	for (int32 i = 0; i <= info.stepCount; i++)
	{
		int32 pos = 0;
		do
		{
			if (string[pos] != indexString[i][pos])
				break;
			pos++;
			if (string[pos] == 0 && indexString[i][pos] == 0)
			{
				_valueNormalized = toNormalized (i);
				return true;
			}
		} while (string[pos] != 0 && indexString[i][pos] != 0);
	}
	UString128 str (string);
	int64 value;
	if (str.scanInt (value) && value <= info.stepCount)
	{
		_valueNormalized = toNormalized (static_cast<Vst::ParamValue> (value));
		return true;
	}
	return false;
}

//-----------------------------------------------------------------------------
void IndexedParameter::setIndexString (int32 index, const String128 str)
{
	if (index <= info.stepCount)
		memcpy (indexString[index], str, sizeof (String128));
}

//-----------------------------------------------------------------------------
//-----------------------------------------------------------------------------
//-----------------------------------------------------------------------------
ScaledParameter::ScaledParameter (	const TChar* title, 
									const TChar* units, 
									int32 stepCount, 
									ParamValue defaultValueNormalized,
									int32 flags,
									int32 tag,
									ParamValue minValue,
									ParamValue maxValue,
									bool printAsInteger,
									UnitID unitID)
: BaseParameter (title, units, stepCount, defaultValueNormalized, flags, tag, unitID)
, minValue (minValue)
, maxValue (maxValue)
, printAsInteger (printAsInteger)
{
	setPrecision (2);
}

//-----------------------------------------------------------------------------
ParamValue ScaledParameter::toPlain (ParamValue _valueNormalized) const
{
	return _valueNormalized * (maxValue - minValue) + minValue;
}

//-----------------------------------------------------------------------------
ParamValue ScaledParameter::toNormalized (ParamValue plainValue) const
{
	return (plainValue - minValue) / (maxValue - minValue);
}

//-----------------------------------------------------------------------------
void ScaledParameter::toString (ParamValue _valueNormalized, String128 string) const
{
	UString wrapper (string, USTRINGSIZE (String128));
	if (printAsInteger)
		wrapper.printInt (static_cast<int64> (toPlain (_valueNormalized)));
	else
		wrapper.printFloat (toPlain (_valueNormalized), precision);
}

//-----------------------------------------------------------------------------
bool ScaledParameter::fromString (const TChar* string, ParamValue& _valueNormalized) const
{
	UString wrapper ((TChar*)string, USTRINGSIZE (String128));
	double value;
	if (wrapper.scanFloat (value))
	{
		if (value < minValue)
			value = minValue;
		else if (value > maxValue)
			value = maxValue;
		_valueNormalized = toNormalized (value);
		return true;
	}
	return false;
}

}}} // namespaces
