/*
  Copyright (c) 2021 Alex Diener
  
  This software is provided 'as-is', without any express or implied
  warranty. In no event will the authors be held liable for any damages
  arising from the use of this software.
  
  Permission is granted to anyone to use this software for any purpose,
  including commercial applications, and to alter it and redistribute it
  freely, subject to the following restrictions:
  
  1. The origin of this software must not be misrepresented; you must not
     claim that you wrote the original software. If you use this software
     in a product, an acknowledgment in the product documentation would be
     appreciated but is not required.
  2. Altered source versions must be plainly marked as such, and must not be
     misrepresented as being the original software.
  3. This notice may not be removed or altered from any source distribution.
  
  Alex Diener alex@ludobloom.com
*/

#include "audiosynth/WaveSampler_modified.h"
#include "utilities/IOUtilities.h"
#include "utilities/lookup3.h"
#include <math.h>

#define stemobject_implementation WaveSampler_modified

stemobject_vtable_begin();
stemobject_vtable_entry(dispose);
stemobject_vtable_entry(copy);
stemobject_vtable_entry(isEqual);
stemobject_vtable_entry(hash);
stemobject_vtable_entry(initState);
stemobject_vtable_entry(disposeState);
stemobject_vtable_entry(getPropertyCount);
stemobject_vtable_entry(getPropertyAtIndex);
stemobject_vtable_entry(getPropertyValueStateless);
stemobject_vtable_entry(setPropertyValue);
stemobject_vtable_entry(sample);
stemobject_vtable_end();

WaveSampler_modified * WaveSampler_modified_create(compat_type(WaveSampler *) sampler, unsigned int modifierCount, compat_type(WaveModifier **) modifiers) {
	stemobject_create_implementation(init, sampler, modifierCount, modifiers)
}

static void updateModifierLinkage(WaveSampler_modified * self) {
	self->entryPoint = self->sampler;
	if (self->modifierCount > 0) {
		for (unsigned int modifierIndex = 0; modifierIndex < self->modifierCount; modifierIndex++) {
			if (self->modifiers[modifierIndex]->solo) {
				call_virtual(setUpstream, self->modifiers[modifierIndex], self->sampler);
				self->entryPoint = (WaveSampler *) self->modifiers[modifierIndex];
				return;
			}
		}
		unsigned int modifierIndex = 0;
		for (; modifierIndex < self->modifierCount && self->modifiers[modifierIndex]->mute; modifierIndex++);
		if (modifierIndex == self->modifierCount) {
			self->entryPoint = self->sampler;
		} else {
			call_virtual(setUpstream, self->modifiers[modifierIndex], self->sampler);
			unsigned int lastNonMuteModifierIndex = modifierIndex;
			for (modifierIndex++; modifierIndex < self->modifierCount; modifierIndex++) {
				if (!self->modifiers[modifierIndex]->mute) {
					call_virtual(setUpstream, self->modifiers[modifierIndex], self->modifiers[lastNonMuteModifierIndex]);
					lastNonMuteModifierIndex = modifierIndex;
				}
			}
			self->entryPoint = (WaveSampler *) self->modifiers[lastNonMuteModifierIndex];
		}
	}
}

bool WaveSampler_modified_init(WaveSampler_modified * self, compat_type(WaveSampler *) sampler, unsigned int modifierCount, compat_type(WaveModifier **) modifiers) {
	call_super(init, self);
	self->sampler = sampler;
	self->modifierCount = modifierCount;
	self->modifiers = memdup(modifiers, modifierCount * sizeof(*self->modifiers));
	updateModifierLinkage(self);
	return true;
}

void WaveSampler_modified_dispose(WaveSampler_modified * self) {
	call_virtual(dispose, self->sampler);
	for (unsigned int modifierIndex = 0; modifierIndex < self->modifierCount; modifierIndex++) {
		call_virtual(dispose, self->modifiers[modifierIndex]);
	}
	free(self->modifiers);
	call_super_virtual(dispose, self);
}

WaveSampler_modified * WaveSampler_modified_copy(WaveSampler_modified * self) {
	stemobject_copy_implementation(initCopy)
}

bool WaveSampler_modified_isEqual(WaveSampler_modified * self, compat_type(WaveSampler_modified *) compareUntyped) {
	WaveSampler_modified * compare = compareUntyped;
	if (!call_super_virtual(isEqual, self, compare) || self->modifierCount != compare->modifierCount) {
		return false;
	}
	for (unsigned int modifierIndex = 0; modifierIndex < self->modifierCount; modifierIndex++) {
		if (!call_virtual(isEqual, self->modifiers[modifierIndex], compare->modifiers[modifierIndex])) {
			return false;
		}
	}
	return call_virtual(isEqual, self->sampler, compare->sampler);
}

uint32_t WaveSampler_modified_hash(WaveSampler_modified * self, uint32_t initval) {
	for (unsigned int modifierIndex = 0; modifierIndex < self->modifierCount; modifierIndex++) {
		initval = call_virtual(hash, self->modifiers[modifierIndex], initval);
	}
	return initval;
}

void WaveSampler_modified_initCopy(WaveSampler_modified * self, WaveSampler_modified * original) {
	call_super(initCopy, self, (WaveSampler *) original);
	self->sampler = call_virtual(copy, original->sampler);
	self->modifierCount = original->modifierCount;
	if (self->modifierCount == 0) {
		self->modifiers = NULL;
	} else {
		self->modifiers = malloc(self->modifierCount * sizeof(*self->modifiers));
		for (unsigned int modifierIndex = 0; modifierIndex < self->modifierCount; modifierIndex++) {
			self->modifiers[modifierIndex] = call_virtual(copy, original->modifiers[modifierIndex]);
		}
	}
	updateModifierLinkage(self);
}

SamplerObject_state * WaveSampler_modified_initState(WaveSampler_modified * self) {
	return call_virtual(initState, self->entryPoint);
}

void WaveSampler_modified_disposeState(WaveSampler_modified * self, SamplerObject_state * state) {
	call_virtual(disposeState, self->entryPoint, state);
}

unsigned int WaveSampler_modified_getPropertyCount(WaveSampler_modified * self) {
	return call_virtual(getPropertyCount, self->entryPoint);
}

SynthProperty WaveSampler_modified_getPropertyAtIndex(WaveSampler_modified * self, unsigned int index) {
	return call_virtual(getPropertyAtIndex, self->entryPoint, index);
}

float WaveSampler_modified_getPropertyValueStateless(WaveSampler_modified * self, SynthPropertyIdentifier propertyIdentifier) {
	return call_virtual(getPropertyValueStateless, self->entryPoint, propertyIdentifier);
}

void WaveSampler_modified_setPropertyValue(WaveSampler_modified * self, SamplerObject_state * state, SynthPropertyIdentifier propertyIdentifier, float value) {
	call_virtual(setPropertyValue, self->entryPoint, state, propertyIdentifier, value);
}

float WaveSampler_modified_sample(WaveSampler_modified * self, SamplerObject_state * state, float phase, float phaseDelta, float time, float timeDelta) {
	return call_virtual(sample, self->entryPoint, state, phase, phaseDelta, time, timeDelta);
}

void WaveSampler_modified_addModifier(WaveSampler_modified * self, compat_type(WaveModifier *) modifier) {
	WaveModifier * modifierTyped = modifier;
	self->modifiers = realloc(self->modifiers, (self->modifierCount + 1) * sizeof(*self->modifiers));
	if (self->modifierCount == 0) {
		call_virtual(setUpstream, modifierTyped, self->sampler);
	} else {
		call_virtual(setUpstream, modifierTyped, self->modifiers[self->modifierCount - 1]);
	}
	self->modifiers[self->modifierCount++] = modifier;
	updateModifierLinkage(self);
}

void WaveSampler_modified_reorderModifier(WaveSampler_modified * self, unsigned int modifierIndex, int offset) {
	WaveModifier * swap = self->modifiers[modifierIndex];
	int direction = (offset > 0) * 2 - 1;
	for (unsigned int swapIndex = modifierIndex; swapIndex != modifierIndex + offset; swapIndex += direction) {
		self->modifiers[swapIndex] = self->modifiers[swapIndex + direction];
	}
	self->modifiers[modifierIndex + offset] = swap;
	updateModifierLinkage(self);
}

void WaveSampler_modified_removeModifier(WaveSampler_modified * self, unsigned int modifierIndex) {
	if (modifierIndex < self->modifierCount) {
		call_virtual(dispose, self->modifiers[modifierIndex]);
		self->modifierCount--;
		if (modifierIndex < self->modifierCount) {
			for (; modifierIndex < self->modifierCount; modifierIndex++) {
				self->modifiers[modifierIndex] = self->modifiers[modifierIndex + 1];
			}
			if (modifierIndex == 0) {
				call_virtual(setUpstream, self->modifiers[modifierIndex], self->sampler);
			} else {
				call_virtual(setUpstream, self->modifiers[modifierIndex], self->modifiers[modifierIndex - 1]);
			}
		}
		updateModifierLinkage(self);
	}
}

void WaveSampler_modified_modifiersUpdated(WaveSampler_modified * self) {
	updateModifierLinkage(self);
}