/*
  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 "audiolab/Globals.h"
#include "audiolab/MuteSoloTextListView.h"
#include "audiolab/Utilities.h"
#include "audiolab/WaveSamplerLayersView.h"
#include "audiosynth/GeneralSynthConfiguration.h"
#include "audiosynth/WaveSampler_modified.h"
#include "audiosynth/WaveSampler_sine.h"
#include "audiosynth/WaveSampler_spline.h"
#include "shell/ShellKeyCodes.h"
#include "uitoolkit/UIToolkitAppearance.h"
#include "uitoolkit/UIToolkitDrawing.h"
#include "utilities/AutoFreePool.h"
#include "utilities/IOUtilities.h"
#include "stem_core.h"
#include <stdio.h>

#define stemobject_implementation WaveSamplerLayersView

v_begin();
v_func(dispose);
v_end();

#define LAYERS_VIEW_WIDTH 630
#define LAYERS_VIEW_HEIGHT 342
#define CONTROL_AREA_LEFT 210
#define CONTROL_AREA_TOP (LAYERS_VIEW_HEIGHT - 110)
#define CONTROL_AREA_2_TOP (LAYERS_VIEW_HEIGHT - 110 - CONTROL_OFFSET_Y * 4)

WaveSamplerLayersView * WaveSamplerLayersView_create(Vector2f position, Vector2f relativeOrigin, WaveSampler_layered * waveSampler, WaveSamplerLayersView_liveUpdateCallback liveUpdateCallback, WaveSamplerLayersView_updateCompleteCallback updateCompleteCallback, UIWindowView_callback closeCallback, void * callbackContext, UIWindowRoot * windowRoot, UIAppearance appearance) {
	stemobject_create_implementation(init, position, relativeOrigin, waveSampler, liveUpdateCallback, updateCompleteCallback, closeCallback, callbackContext, windowRoot, appearance)
}

static void updateLayerList(WaveSamplerLayersView * self) {
	struct UITextListView_item items[self->waveSampler->layerCount];
	for (unsigned int layerIndex = 0; layerIndex < self->waveSampler->layerCount; layerIndex++) {
		GeneralSynthConfiguration_waveType waveType = getWaveType(self->waveSampler->layers[layerIndex].sampler);
		if (waveType == WAVE_TYPE_MODIFIED) {
			char layerName[32];
			snprintf_safe(layerName, sizeof(layerName), "%s (modified)", getWaveSamplerHumanReadableName(getWaveType(((WaveSampler_modified *) self->waveSampler->layers[layerIndex].sampler)->sampler)));
			char * layerNameDup = AutoFreePool_add(strdup(layerName));
			items[layerIndex].text = STR(layerNameDup);
		} else {
			items[layerIndex].text = STR(getWaveSamplerHumanReadableName(waveType));
		}
		items[layerIndex].identifier = layerIndex;
	}
	UITextListView_setItems(self->layerListView, self->waveSampler->layerCount, items);
	UITextListView_setSelectedItemIdentifier(self->layerListView, self->selectedLayerIndex);
}

static void samplerParameterChangeInProgressCallback(void * context) {
	WaveSamplerLayersView * self = context;
	self->waveShapeView->sampleMultiplier = self->waveSampler->layers[self->selectedLayerIndex].blend;
	self->waveShapeView->frequencyOffset = self->waveSampler->layers[self->selectedLayerIndex].frequencyOffset;
	self->waveShapeView->phaseOffset = self->waveSampler->layers[self->selectedLayerIndex].phaseOffset;
	self->liveUpdateCallback(self->callbackContext);
}

static void samplerParameterChangeCompleteCallback(void * context, const char * description) {
	WaveSamplerLayersView * self = context;
	updateLayerList(self);
	self->updateCompleteCallback(self->callbackContext, description);
}

static void showLayerControls(WaveSamplerLayersView * self, struct WaveSampler_layered_layer layer) {
	self->waveSplineEditView->spline = NULL;
	if (self->waveControlPanel != NULL) {
		call_virtual(removeElement, self, self->waveControlPanel);
		self->waveControlPanel = NULL;
	}
	self->waveControlPanel = createWaveSamplerSynthControls(layer.sampler, VECTOR2f(CONTROL_AREA_LEFT, CONTROL_AREA_2_TOP), samplerParameterChangeInProgressCallback, samplerParameterChangeCompleteCallback, self, self->windowRoot, g_uiAppearance);
	if (self->waveControlPanel != NULL) {
		call_virtual(addElement, self, self->waveControlPanel, true);
	}
	if (getWaveType(layer.sampler) == WAVE_TYPE_SPLINE) {
		self->waveSplineEditView->spline = &((WaveSampler_spline *) layer.sampler)->spline;
	}
	
	UIFloatEditText_setValue(self->editText_blend, layer.blend);
	UISlider_setValue(self->slider_blend, layer.blend);
	UIFloatEditText_setValue(self->editText_frequencyOffset, layer.frequencyOffset);
	UISlider_setValue(self->slider_frequencyOffset, layer.frequencyOffset);
	UIFloatEditText_setValue(self->editText_phaseOffset, layer.phaseOffset);
	UISlider_setValue(self->slider_phaseOffset, layer.phaseOffset);
	
	self->waveShapeView->samplerObject = (SamplerObject *) layer.sampler;
	self->waveShapeView->sampleMultiplier = layer.blend;
	self->waveShapeView->frequencyOffset = layer.frequencyOffset;
	self->waveShapeView->phaseOffset = layer.phaseOffset;
}

static void updateControls(WaveSamplerLayersView * self) {
	updateLayerList(self);
	showLayerControls(self, self->waveSampler->layers[self->selectedLayerIndex]);
	UIPopUpMenu_setSelectedItemIdentifier(self->waveTypePopUp, getWaveType(self->waveSampler->layers[self->selectedLayerIndex].sampler));
}

static void layerSelectedCallback(UIListViewBase * listView, double referenceTime, void * context) {
	WaveSamplerLayersView * self = context;
	self->selectedLayerIndex = UITextListView_getSelectedItemIdentifier((UITextListView *) listView);
	UIPopUpMenu_setSelectedItemIdentifier(self->waveTypePopUp, getWaveType(self->waveSampler->layers[self->selectedLayerIndex].sampler));
	showLayerControls(self, self->waveSampler->layers[self->selectedLayerIndex]);
}

static bool getMuteSoloStateCallback(MuteSoloTextListView * listView, unsigned int lineIndex, bool * outMute, bool * outSolo, void * context) {
	WaveSamplerLayersView * self = context;
	*outMute = self->waveSampler->layers[lineIndex].mute;
	*outSolo = self->waveSampler->layers[lineIndex].solo;
	return true;
}

static void toggleMuteSoloStateCallback(MuteSoloTextListView * listView, unsigned int lineIndex, unsigned int modifiers, bool solo, void * context) {
	WaveSamplerLayersView * self = context;
	if (solo) {
		if (self->waveSampler->layers[lineIndex].solo) {
			self->waveSampler->layers[lineIndex].solo = false;
		} else {
			for (unsigned int layerIndex = 0; layerIndex < self->waveSampler->layerCount; layerIndex++) {
				self->waveSampler->layers[layerIndex].solo = false;
			}
			self->waveSampler->layers[lineIndex].solo = true;
			self->selectedLayerIndex = lineIndex;
			updateControls(self);
			call_virtual(scrollToLine, self->layerListView, self->selectedLayerIndex);
		}
	} else {
		self->waveSampler->layers[lineIndex].solo = false;
		if (modifiers & MODIFIER_SHIFT_BIT) {
			bool mute = !self->waveSampler->layers[lineIndex].mute;
			for (unsigned int layerIndex = 0; layerIndex < self->waveSampler->layerCount; layerIndex++) {
				self->waveSampler->layers[layerIndex].mute = mute;
			}
		} else {
			self->waveSampler->layers[lineIndex].mute = !self->waveSampler->layers[lineIndex].mute;
		}
	}
	if (self->liveUpdateCallback != NULL) {
		self->liveUpdateCallback(self->callbackContext);
	}
	if (self->updateCompleteCallback != NULL) {
		self->updateCompleteCallback(self->callbackContext, solo ? "set wave layer solo" : "set wave layer mute");
	}
}

static void deleteLineCallback(UIListViewBase * listView, unsigned int modifiers, bool isRepeat, double referenceTime, void * context) {
	WaveSamplerLayersView * self = context;
	if (!isRepeat && self->waveSampler->layerCount > 1) {
		WaveSampler_layered_removeLayer(self->waveSampler, self->selectedLayerIndex);
		if (self->selectedLayerIndex >= self->waveSampler->layerCount) {
			self->selectedLayerIndex = self->waveSampler->layerCount - 1;
		}
		updateControls(self);
		call_virtual(scrollToLine, self->layerListView, self->selectedLayerIndex);
		if (self->liveUpdateCallback != NULL) {
			self->liveUpdateCallback(self->callbackContext);
		}
		if (self->updateCompleteCallback != NULL) {
			self->updateCompleteCallback(self->callbackContext, "delete wave layer");
		}
	}
}

static void addLayerCallback(UIButton * button, unsigned int modifiers, double referenceTime, void * context) {
	WaveSamplerLayersView * self = context;
	struct WaveSampler_layered_layer layer;
	layer.blend = 1.0f;
	layer.mute = false;
	layer.solo = false;
	layer.frequencyOffset = 0.0f;
	layer.phaseOffset = 0.0f;
	layer.sampler = (WaveSampler *) WaveSampler_sine_create();
	WaveSampler_layered_addLayer(self->waveSampler, layer);
	self->selectedLayerIndex = self->waveSampler->layerCount - 1;
	updateControls(self);
	call_virtual(scrollToLine, self->layerListView, self->selectedLayerIndex);
	call_virtual(setFocusedElement, self, self->layerListView, NULL, UI_NONE);
	if (self->liveUpdateCallback != NULL) {
		self->liveUpdateCallback(self->callbackContext);
	}
	if (self->updateCompleteCallback != NULL) {
		self->updateCompleteCallback(self->callbackContext, "add wave layer");
	}
}

static void waveTypeCallback(UIPopUpMenu * popUpMenu, int itemIdentifier, unsigned int modifiers, double referenceTime, void * context) {
	WaveSamplerLayersView * self = context;
	GeneralSynthConfiguration_waveType waveType = itemIdentifier;
	if (waveType == getWaveType(self->waveSampler->layers[self->selectedLayerIndex].sampler)) {
		return;
	}
	
	self->waveSampler->layers[self->selectedLayerIndex].sampler = changeWaveSamplerType(waveType, self->waveSampler->layers[self->selectedLayerIndex].sampler);
	updateControls(self);
	if (self->liveUpdateCallback != NULL) {
		self->liveUpdateCallback(self->callbackContext);
	}
	if (self->updateCompleteCallback != NULL) {
		self->updateCompleteCallback(self->callbackContext, "change layer wave type");
	}
}

static void copyParametersCallback(UIButton * button, unsigned int modifiers, double referenceTime, void * context) {
	WaveSamplerLayersView * self = context;
	copyWaveParametersToClipboard(self->waveSampler->layers[self->selectedLayerIndex].sampler);
}

static void pasteParametersCallback(UIButton * button, unsigned int modifiers, double referenceTime, void * context) {
	WaveSamplerLayersView * self = context;
	WaveSampler * waveSampler = createWaveSamplerFromClipboard();
	if (waveSampler == NULL) {
		Shell_systemBeep();
	} else {
		call_virtual(dispose, self->waveSampler->layers[self->selectedLayerIndex].sampler);
		self->waveSampler->layers[self->selectedLayerIndex].sampler = waveSampler;
		updateControls(self);
		if (self->liveUpdateCallback != NULL) {
			self->liveUpdateCallback(self->callbackContext);
		}
		if (self->updateCompleteCallback != NULL) {
			self->updateCompleteCallback(self->callbackContext, "paste wave layer");
		}
	}
}

defineSynthControlSliderCallback_extended(struct WaveSampler_layered_layer, (&self->waveSampler->layers[self->selectedLayerIndex]), blend,           blend,           "wave layer blend",            0.05f,        samplerParameterChangeInProgressCallback, samplerParameterChangeCompleteCallback, self);
defineSynthControlSliderCallback_extended(struct WaveSampler_layered_layer, (&self->waveSampler->layers[self->selectedLayerIndex]), frequencyOffset, frequencyOffset, "wave layer frequency offset", 1.0f / 12.0f, samplerParameterChangeInProgressCallback, samplerParameterChangeCompleteCallback, self);
defineSynthControlSliderCallback_extended(struct WaveSampler_layered_layer, (&self->waveSampler->layers[self->selectedLayerIndex]), phaseOffset,     phaseOffset,     "wave layer phase offset",     0.05f,        samplerParameterChangeInProgressCallback, samplerParameterChangeCompleteCallback, self);

bool WaveSamplerLayersView_init(WaveSamplerLayersView * self, Vector2f position, Vector2f relativeOrigin, WaveSampler_layered * waveSampler, WaveSamplerLayersView_liveUpdateCallback liveUpdateCallback, WaveSamplerLayersView_updateCompleteCallback updateCompleteCallback, UIWindowView_callback closeCallback, void * callbackContext, UIWindowRoot * windowRoot, UIAppearance appearance) {
	call_super(init, self, position, relativeOrigin, VECTOR2f_ZERO, VECTOR2f(LAYERS_VIEW_WIDTH, LAYERS_VIEW_HEIGHT), STRL("Wave layers"), closeCallback, NULL, callbackContext, windowRoot, appearance);
	self->backgroundColor = COLOR4f_PREMULTIPLIED(0.5f, 0.65f, 0.575f, 0.95f);
	self->titleColorBottom = COLOR4f(0.75f, 0.9f, 0.825f, 1.0f);
	self->titleColorTop = Color4f_interpolate(COLOR4f(0.75f, 0.9f, 0.825f, 1.0f), COLOR4f(1.0f, 1.0f, 1.0f, 1.0f), 0.625f);
	self->waveSampler = waveSampler;
	self->selectedLayerIndex = 0;
	self->liveUpdateCallback = liveUpdateCallback;
	self->updateCompleteCallback = updateCompleteCallback;
	self->waveControlPanel = NULL;
	UITypeface * typeface = UIToolkit_getUITypeface(self->appearance, UIToolkit_currentContext()->drawingInterface);
	float lineHeight = call_virtual(getLineHeight, typeface);
	UIButton * addLayerButton, * pasteButton;
	call_virtual(addElement, self, self->layerListView = (UITextListView *) MuteSoloTextListView_create(0, NULL, VECTOR2f(5, LAYERS_VIEW_HEIGHT - 5), VECTOR2f(0.0f, 1.0f), 200, lineHeight + 2, 7, SELECT_MODE_SINGLE_NO_DESELECT, NULL, layerSelectedCallback, getMuteSoloStateCallback, toggleMuteSoloStateCallback, deleteLineCallback, self, appearance), true);
	call_virtual(addElement, self, addLayerButton = UIButton_create(STRL("Add layer"), VECTOR2f(5, call_virtual2(getBounds, self->layerListView).yMin - 5), VECTOR2f(0.0f, 1.0f), 0, OVERFLOW_RESIZE, addLayerCallback, self, appearance), true);
	call_virtual(addElement, self, self->waveShapeView = WaveShapeView_create(VECTOR2f(CONTROL_AREA_LEFT, LAYERS_VIEW_HEIGHT - 5), VECTOR2f(0.0f, 1.0f), VECTOR2f(415, 100), self->waveSampler->layers[self->selectedLayerIndex].sampler, appearance), true);
	call_virtual(addElement, self, self->waveSplineEditView = SplineEditView_create(VECTOR2f(CONTROL_AREA_LEFT + 42, LAYERS_VIEW_HEIGHT - 5), VECTOR2f(0.0f, 1.0f), VECTOR2f(332, 100), NULL, -1.0f, 1.0f, samplerParameterChangeInProgressCallback, samplerParameterChangeCompleteCallback, self, appearance), true);
	struct UITextListView_item waveTypeItems[] = {
		{STR(getWaveSamplerHumanReadableName(WAVE_TYPE_SINE)),        WAVE_TYPE_SINE},
		{STR(getWaveSamplerHumanReadableName(WAVE_TYPE_PULSE)),       WAVE_TYPE_PULSE},
		{STR(getWaveSamplerHumanReadableName(WAVE_TYPE_SAWTOOTH)),    WAVE_TYPE_SAWTOOTH},
		{STR(getWaveSamplerHumanReadableName(WAVE_TYPE_TRIANGLE)),    WAVE_TYPE_TRIANGLE},
		{STR(getWaveSamplerHumanReadableName(WAVE_TYPE_SPIKE)),       WAVE_TYPE_SPIKE},
		{STR(getWaveSamplerHumanReadableName(WAVE_TYPE_WHITE_NOISE)), WAVE_TYPE_WHITE_NOISE},
		{STR(getWaveSamplerHumanReadableName(WAVE_TYPE_PINK_NOISE)),  WAVE_TYPE_PINK_NOISE},
		{STR(getWaveSamplerHumanReadableName(WAVE_TYPE_BITNOISE)),    WAVE_TYPE_BITNOISE},
		{STR(getWaveSamplerHumanReadableName(WAVE_TYPE_SPLINE)),      WAVE_TYPE_SPLINE},
		{STR(getWaveSamplerHumanReadableName(WAVE_TYPE_PCM_DATA)),    WAVE_TYPE_PCM_DATA},
		{STR(getWaveSamplerHumanReadableName(WAVE_TYPE_LAYERED)),     WAVE_TYPE_LAYERED},
		{STR(getWaveSamplerHumanReadableName(WAVE_TYPE_MODIFIED)),    WAVE_TYPE_MODIFIED}
	};
	UIContainer_addElement((UIContainer *) self, self->waveTypePopUp = UIPopUpMenu_create(sizeof_count(waveTypeItems), waveTypeItems, VECTOR2f(CONTROL_AREA_LEFT, CONTROL_AREA_TOP), VECTOR2f(0.0f, 1.0f), 0.0f, OVERFLOW_RESIZE, waveTypeCallback, self, appearance), true);
	UIContainer_addElement((UIContainer *) self, pasteButton = UIButton_create(STRL("Paste"), VECTOR2f(LAYERS_VIEW_WIDTH - 5, CONTROL_AREA_TOP), VECTOR2f(1.0f, 1.0f), 0, OVERFLOW_RESIZE, pasteParametersCallback, self, g_uiAppearance), true);
	UIContainer_addElement((UIContainer *) self, UIButton_create(STRL("Copy"), VECTOR2f(pasteButton->position.x - pasteButton->width - 2, pasteButton->position.y), VECTOR2f(1.0f, 1.0f), 0, OVERFLOW_RESIZE, copyParametersCallback, self, g_uiAppearance), true);
	
	float controlY = CONTROL_AREA_TOP - 14.0f - CONTROL_OFFSET_Y;
	addSynthControlSlider(self, CONTROL_AREA_LEFT + CONTROL_DEFAULT_X, self->waveSampler->layers[self->selectedLayerIndex].blend,           "Blend",        blend,            0.0f, 1.0f, 1.0f);
	addSynthControlSlider(self, CONTROL_AREA_LEFT + CONTROL_DEFAULT_X, self->waveSampler->layers[self->selectedLayerIndex].frequencyOffset, "Freq offset",  frequencyOffset, -5.0f, 5.0f, 0.0f);
	addSynthControlSlider(self, CONTROL_AREA_LEFT + CONTROL_DEFAULT_X, self->waveSampler->layers[self->selectedLayerIndex].phaseOffset,     "Phase offset", phaseOffset,      0.0f, 1.0f, 0.0f);
	updateControls(self);
	return true;
}

void WaveSamplerLayersView_dispose(WaveSamplerLayersView * self) {
	call_super_virtual(dispose, self);
}

void WaveSamplerLayersView_setSelectedLayer(WaveSamplerLayersView * self, unsigned int layerIndex) {
	if (layerIndex < self->waveSampler->layerCount) {
		UITextListView_setSelectedItemIdentifier(self->layerListView, layerIndex);
		self->selectedLayerIndex = layerIndex;
		showLayerControls(self, self->waveSampler->layers[layerIndex]);
	}
}

void WaveSamplerLayersView_layerListUpdated(WaveSamplerLayersView * self) {
	updateControls(self);
}