/**************************************************************************/
/*  gltf_buffer_view.cpp                                                  */
/**************************************************************************/
/*                         This file is part of:                          */
/*                             GODOT ENGINE                               */
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/* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */
/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur.                  */
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/* 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     */
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#include "gltf_buffer_view.h"
#include "gltf_buffer_view.compat.inc"

#include "../gltf_state.h"

void GLTFBufferView::_bind_methods() {
	ClassDB::bind_method(D_METHOD("load_buffer_view_data", "state"), &GLTFBufferView::load_buffer_view_data);

	ClassDB::bind_method(D_METHOD("get_buffer"), &GLTFBufferView::get_buffer);
	ClassDB::bind_method(D_METHOD("set_buffer", "buffer"), &GLTFBufferView::set_buffer);
	ClassDB::bind_method(D_METHOD("get_byte_offset"), &GLTFBufferView::get_byte_offset);
	ClassDB::bind_method(D_METHOD("set_byte_offset", "byte_offset"), &GLTFBufferView::set_byte_offset);
	ClassDB::bind_method(D_METHOD("get_byte_length"), &GLTFBufferView::get_byte_length);
	ClassDB::bind_method(D_METHOD("set_byte_length", "byte_length"), &GLTFBufferView::set_byte_length);
	ClassDB::bind_method(D_METHOD("get_byte_stride"), &GLTFBufferView::get_byte_stride);
	ClassDB::bind_method(D_METHOD("set_byte_stride", "byte_stride"), &GLTFBufferView::set_byte_stride);
	ClassDB::bind_method(D_METHOD("get_indices"), &GLTFBufferView::get_indices);
	ClassDB::bind_method(D_METHOD("set_indices", "indices"), &GLTFBufferView::set_indices);

	ADD_PROPERTY(PropertyInfo(Variant::INT, "buffer"), "set_buffer", "get_buffer"); // GLTFBufferIndex
	ADD_PROPERTY(PropertyInfo(Variant::INT, "byte_offset"), "set_byte_offset", "get_byte_offset"); // int
	ADD_PROPERTY(PropertyInfo(Variant::INT, "byte_length"), "set_byte_length", "get_byte_length"); // int
	ADD_PROPERTY(PropertyInfo(Variant::INT, "byte_stride"), "set_byte_stride", "get_byte_stride"); // int
	ADD_PROPERTY(PropertyInfo(Variant::BOOL, "indices"), "set_indices", "get_indices"); // bool
}

GLTFBufferIndex GLTFBufferView::get_buffer() const {
	return buffer;
}

void GLTFBufferView::set_buffer(GLTFBufferIndex p_buffer) {
	buffer = p_buffer;
}

int GLTFBufferView::get_byte_offset() const {
	return byte_offset;
}

void GLTFBufferView::set_byte_offset(int p_byte_offset) {
	byte_offset = p_byte_offset;
}

int GLTFBufferView::get_byte_length() const {
	return byte_length;
}

void GLTFBufferView::set_byte_length(int p_byte_length) {
	byte_length = p_byte_length;
}

int GLTFBufferView::get_byte_stride() const {
	return byte_stride;
}

void GLTFBufferView::set_byte_stride(int p_byte_stride) {
	byte_stride = p_byte_stride;
}

bool GLTFBufferView::get_indices() const {
	return indices;
}

void GLTFBufferView::set_indices(bool p_indices) {
	indices = p_indices;
}

Vector<uint8_t> GLTFBufferView::load_buffer_view_data(const Ref<GLTFState> p_state) const {
	ERR_FAIL_COND_V(p_state.is_null(), Vector<uint8_t>());
	ERR_FAIL_COND_V_MSG(byte_stride > 0, Vector<uint8_t>(), "Buffer views with byte stride are not yet supported by this method.");
	const TypedArray<Vector<uint8_t>> &buffers = p_state->get_buffers();
	ERR_FAIL_INDEX_V(buffer, buffers.size(), Vector<uint8_t>());
	const PackedByteArray &buffer_data = buffers[buffer];
	const int64_t byte_end = byte_offset + byte_length;
	return buffer_data.slice(byte_offset, byte_end);
}