/*
Copyright (c) 2019-2023 Péter Magyar

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 "ess_material_cache.h"

#include "modules/modules_enabled.gen.h"

#ifdef MODULE_PROPS_ENABLED
#include "../../props/props/prop_data.h"
#include "../../props/props/prop_data_prop.h"
#include "../../props/props/prop_data_tiled_wall.h"
#include "../../props/tiled_wall/tiled_wall_data.h"

#ifdef MODULE_MESH_DATA_RESOURCE_ENABLED
#include "../../mesh_data_resource/props/prop_data_mesh_data.h"
#endif

#endif

#include "../singletons/ess.h"

#define VARIANT_ARRAY_GET(arr)             \
	Vector<Variant> r;                     \
	for (int i = 0; i < arr.size(); i++) { \
		r.push_back(arr[i].get_ref_ptr()); \
	}                                      \
	return r;

bool ESSMaterialCache::get_initialized() {
	return _initialized;
}
void ESSMaterialCache::set_initialized(const bool value) {
	_initialized = value;
}

bool ESSMaterialCache::mutex_locked() {
	return _locked;
}
void ESSMaterialCache::mutex_lock() {
	_mutex.lock();
}
void ESSMaterialCache::mutex_unlock() {
	_mutex.unlock();
}

int ESSMaterialCache::get_ref_count() {
	return _ref_count;
}
void ESSMaterialCache::set_ref_count(const int value) {
	_ref_count = value;
}
void ESSMaterialCache::inc_ref_count() {
	_ref_count += 1;
}
void ESSMaterialCache::dec_ref_count() {
	_ref_count -= 1;
}

//Materials
Ref<Material> ESSMaterialCache::material_get(const int index) {
	ERR_FAIL_INDEX_V(index, _materials.size(), Ref<Material>(NULL));

	return _materials[index];
}

Ref<Material> ESSMaterialCache::material_lod_get(const int index) {
	ERR_FAIL_COND_V(_materials.size() == 0, Ref<Material>(NULL));

	if (index < 0) {
		return _materials[0];
	}

	if (index >= _materials.size()) {
		return _materials[_materials.size() - 1];
	}

	return _materials[index];
}

void ESSMaterialCache::material_add(const Ref<Material> &value) {
	ERR_FAIL_COND(!value.is_valid());

	_materials.push_back(value);
}

void ESSMaterialCache::material_set(const int index, const Ref<Material> &value) {
	ERR_FAIL_INDEX(index, _materials.size());

	_materials.set(index, value);
}

void ESSMaterialCache::material_remove(const int index) {
	_materials.remove(index);
}

int ESSMaterialCache::material_get_num() const {
	return _materials.size();
}

void ESSMaterialCache::materials_clear() {
	_materials.clear();
}

Vector<Variant> ESSMaterialCache::materials_get() {
	VARIANT_ARRAY_GET(_materials);
}

void ESSMaterialCache::materials_set(const Vector<Variant> &materials) {
	_materials.clear();

	for (int i = 0; i < materials.size(); i++) {
		Ref<Material> material = Ref<Material>(materials[i]);

		_materials.push_back(material);
	}
}

void ESSMaterialCache::texture_add(const Ref<Texture> &texture) {
	_textures.push_back(texture);
}
void ESSMaterialCache::texture_remove(const Ref<Texture> &texture) {
	for (int i = 0; i < _textures.size(); ++i) {
		if (_textures[i] == texture) {
			_textures.remove(i);
			return;
		}
	}
}
void ESSMaterialCache::texture_remove_index(const int index) {
	ERR_FAIL_INDEX(index, _textures.size());

	_textures.remove(index);
}
void ESSMaterialCache::textures_clear() {
	_textures.clear();
}
int ESSMaterialCache::texture_count() {
	return _textures.size();
}
Ref<Texture> ESSMaterialCache::texture_get(const int index) {
	ERR_FAIL_INDEX_V(index, _textures.size(), Ref<Texture>());

	return _textures[index];
}
Ref<AtlasTexture> ESSMaterialCache::texture_get_atlas(const int index) {
	ERR_FAIL_INDEX_V(index, _textures.size(), Ref<AtlasTexture>());

	return texture_get_atlas_tex(_textures[index]);
}
Ref<AtlasTexture> ESSMaterialCache::texture_get_atlas_tex(const Ref<Texture> &texture) {
	return Ref<AtlasTexture>();
}
Rect2 ESSMaterialCache::texture_get_uv_rect(const Ref<Texture> &texture) {
	return Rect2(0, 0, 1, 1);
}

#ifdef MODULE_PROPS_ENABLED
void ESSMaterialCache::prop_add_textures(const Ref<PropData> &prop) {
	if (!prop.is_valid()) {
		return;
	}

	for (int i = 0; i < prop->get_prop_count(); ++i) {
#ifdef MODULE_MESH_DATA_RESOURCE_ENABLED
		Ref<PropDataMeshData> pdm = prop->get_prop(i);

		if (pdm.is_valid()) {
			Ref<Texture> tex = pdm->get_texture();

			if (!tex.is_valid())
				continue;

			texture_add(tex);

			continue;
		}
#endif

		Ref<PropDataTiledWall> pdtw = prop->get_prop(i);

		if (pdtw.is_valid()) {
			Ref<TiledWallData> twd = pdtw->get_data();

			if (!twd.is_valid())
				continue;

			twd->setup_ess_cache(Ref<ESSMaterialCache>(this));

			continue;
		}

		Ref<PropDataProp> pdp = prop->get_prop(i);

		if (pdp.is_valid()) {
			prop_add_textures(pdp->get_prop());
		}
	}
}
void ESSMaterialCache::prop_remove_textures(const Ref<PropData> &prop) {
	if (!prop.is_valid()) {
		return;
	}

	for (int i = 0; i < prop->get_prop_count(); ++i) {
#ifdef MODULE_MESH_DATA_RESOURCE_ENABLED
		Ref<PropDataMeshData> pdm = prop->get_prop(i);

		if (pdm.is_valid()) {
			Ref<Texture> tex = pdm->get_texture();

			if (!tex.is_valid())
				continue;

			texture_remove(tex);
		}
#endif

		Ref<PropDataTiledWall> pdtw = prop->get_prop(i);

		if (pdtw.is_valid()) {
			Ref<TiledWallData> twd = pdtw->get_data();

			if (!twd.is_valid())
				continue;

			for (int j = 0; j < twd->get_tile_count(); ++j) {
				const Ref<Texture> &tex = twd->get_tile_texture(j);

				if (tex.is_valid()) {
					texture_remove(tex);
				}
			}

			for (int j = 0; j < twd->get_flavour_tile_count(); ++j) {
				const Ref<Texture> &tex = twd->get_flavour_tile_texture(j);

				if (tex.is_valid()) {
					texture_remove(tex);
				}
			}

			continue;
		}

		Ref<PropDataProp> pdp = prop->get_prop(i);

		if (pdp.is_valid()) {
			prop_remove_textures(pdp);
		}
	}
}
#endif

void ESSMaterialCache::refresh_rects() {
	_initialized = true;
}

void ESSMaterialCache::initial_setup_default() {
	//Note: call only on the main thread! Shader->duplicate() can crash if done from an another thread!

	ESS *ess = ESS::get_singleton();

	ERR_FAIL_COND(!ess);

	ess->ensure_materials_loaded();

	int matc = ess->material_get_num();
	for (int i = 0; i < matc; ++i) {
		Ref<Material> m = ess->material_get(i);

		ERR_CONTINUE(!m.is_valid());

		Ref<Material> md = m->duplicate();

		_materials.push_back(md);
	}
}

void ESSMaterialCache::setup_material_albedo(Ref<Texture> texture) {
	if (has_method("_setup_material_albedo"))
		call("_setup_material_albedo", texture);
}

ESSMaterialCache::ESSMaterialCache() {
	_ref_count = 0;
	_initialized = false;
	_locked = false;
}

ESSMaterialCache::~ESSMaterialCache() {
	_materials.clear();
}

void ESSMaterialCache::_bind_methods() {
	ClassDB::bind_method(D_METHOD("get_initialized"), &ESSMaterialCache::get_initialized);
	ClassDB::bind_method(D_METHOD("set_initialized", "value"), &ESSMaterialCache::set_initialized);
	ADD_PROPERTY(PropertyInfo(Variant::BOOL, "initialized"), "set_initialized", "get_initialized");

	ClassDB::bind_method(D_METHOD("mutex_locked"), &ESSMaterialCache::mutex_locked);
	ClassDB::bind_method(D_METHOD("mutex_lock"), &ESSMaterialCache::mutex_lock);
	ClassDB::bind_method(D_METHOD("mutex_unlock"), &ESSMaterialCache::mutex_unlock);

	ClassDB::bind_method(D_METHOD("get_ref_count"), &ESSMaterialCache::get_ref_count);
	ClassDB::bind_method(D_METHOD("set_ref_count", "value"), &ESSMaterialCache::set_ref_count);
	ADD_PROPERTY(PropertyInfo(Variant::INT, "mat_ref_count"), "set_ref_count", "get_ref_count");
	ClassDB::bind_method(D_METHOD("inc_ref_count"), &ESSMaterialCache::inc_ref_count);
	ClassDB::bind_method(D_METHOD("dec_ref_count"), &ESSMaterialCache::dec_ref_count);

	BIND_VMETHOD(MethodInfo("_setup_material_albedo", PropertyInfo(Variant::OBJECT, "texture", PROPERTY_HINT_RESOURCE_TYPE, "Texture")));

	ClassDB::bind_method(D_METHOD("material_get", "index"), &ESSMaterialCache::material_get);
	ClassDB::bind_method(D_METHOD("material_lod_get", "index"), &ESSMaterialCache::material_lod_get);
	ClassDB::bind_method(D_METHOD("material_add", "value"), &ESSMaterialCache::material_add);
	ClassDB::bind_method(D_METHOD("material_set", "index", "value"), &ESSMaterialCache::material_set);
	ClassDB::bind_method(D_METHOD("material_remove", "index"), &ESSMaterialCache::material_remove);
	ClassDB::bind_method(D_METHOD("material_get_num"), &ESSMaterialCache::material_get_num);
	ClassDB::bind_method(D_METHOD("materials_clear"), &ESSMaterialCache::materials_clear);

	ClassDB::bind_method(D_METHOD("materials_get"), &ESSMaterialCache::materials_get);
	ClassDB::bind_method(D_METHOD("materials_set"), &ESSMaterialCache::materials_set);
	ADD_PROPERTY(PropertyInfo(Variant::ARRAY, "materials", PROPERTY_HINT_NONE, "23/20:Material", PROPERTY_USAGE_DEFAULT, "Material"), "materials_set", "materials_get");

	ClassDB::bind_method(D_METHOD("texture_add", "texture"), &ESSMaterialCache::texture_add);
	ClassDB::bind_method(D_METHOD("texture_remove", "texture"), &ESSMaterialCache::texture_remove);
	ClassDB::bind_method(D_METHOD("texture_remove_index", "index"), &ESSMaterialCache::texture_remove_index);
	ClassDB::bind_method(D_METHOD("textures_clear"), &ESSMaterialCache::textures_clear);
	ClassDB::bind_method(D_METHOD("texture_count"), &ESSMaterialCache::texture_count);
	ClassDB::bind_method(D_METHOD("texture_get", "index"), &ESSMaterialCache::texture_get);
	ClassDB::bind_method(D_METHOD("texture_get_atlas", "index"), &ESSMaterialCache::texture_get_atlas);
	ClassDB::bind_method(D_METHOD("texture_get_atlas_tex", "index"), &ESSMaterialCache::texture_get_atlas_tex);
	ClassDB::bind_method(D_METHOD("texture_get_uv_rect", "texture"), &ESSMaterialCache::texture_get_uv_rect);

#ifdef MODULE_PROPS_ENABLED
	ClassDB::bind_method(D_METHOD("prop_add_textures", "prop"), &ESSMaterialCache::prop_add_textures);
	ClassDB::bind_method(D_METHOD("prop_remove_textures", "prop"), &ESSMaterialCache::prop_remove_textures);
#endif

	ClassDB::bind_method(D_METHOD("refresh_rects"), &ESSMaterialCache::refresh_rects);

	ClassDB::bind_method(D_METHOD("setup_material_albedo", "texture"), &ESSMaterialCache::setup_material_albedo);

	ClassDB::bind_method(D_METHOD("initial_setup_default"), &ESSMaterialCache::initial_setup_default);
}
