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// license:BSD-3-Clause
// copyright-holders:Ryan Holtz
//============================================================
//
//  suppressorreader.cpp - Reads pass-skipping conditions
//
//============================================================

#include "emu.h"
#include <string>

#include "suppressorreader.h"

#include "suppressor.h"
#include "slider.h"

const suppressor_reader::string_to_enum suppressor_reader::CONDITION_NAMES[suppressor_reader::CONDITION_COUNT] = {
	{ "equal",      bgfx_suppressor::condition_type::CONDITION_EQUAL },
	{ "notequal",   bgfx_suppressor::condition_type::CONDITION_NOTEQUAL }
};

const suppressor_reader::string_to_enum suppressor_reader::COMBINE_NAMES[suppressor_reader::COMBINE_COUNT] = {
	{ "and", bgfx_suppressor::combine_mode::COMBINE_AND },
	{ "or",  bgfx_suppressor::combine_mode::COMBINE_OR }
};

bgfx_suppressor* suppressor_reader::read_from_value(const Value& value, std::string prefix, std::map<std::string, bgfx_slider*>& sliders)
{
	if (!validate_parameters(value, prefix))
	{
		return nullptr;
	}

	std::string name = value["name"].GetString();
	uint32_t condition = uint32_t(get_enum_from_value(value, "condition", bgfx_suppressor::condition_type::CONDITION_EQUAL, CONDITION_NAMES, CONDITION_COUNT));
	bgfx_suppressor::combine_mode mode = bgfx_suppressor::combine_mode(get_enum_from_value(value, "combine", bgfx_suppressor::combine_mode::COMBINE_OR, COMBINE_NAMES, COMBINE_COUNT));

	std::vector<bgfx_slider*> check_sliders;
	check_sliders.push_back(sliders[name + "0"]);

	int slider_count;
	switch (check_sliders[0]->type())
	{
		case bgfx_slider::slider_type::SLIDER_FLOAT:
		case bgfx_slider::slider_type::SLIDER_INT:
		case bgfx_slider::slider_type::SLIDER_INT_ENUM:
			slider_count = 1;
			break;
		case bgfx_slider::slider_type::SLIDER_VEC2:
			slider_count = 2;
			break;
		case bgfx_slider::slider_type::SLIDER_COLOR:
			slider_count = 3;
			break;
		default:
			slider_count = 0;
			break;
	}

	int values[4];
	if (slider_count > 1)
	{
		get_values(value, prefix, "value", values, slider_count);
		if (!READER_CHECK(slider_count == value["value"].GetArray().Size(), (prefix + "Expected " + std::to_string(slider_count) + " values, got " + std::to_string(value["value"].GetArray().Size()) + "\n").c_str())) return nullptr;
		for (int index = 1; index < slider_count; index++)
		{
			check_sliders.push_back(sliders[name + std::to_string(index)]);
		}
	}
	else
	{
		values[0] = get_int(value, "value", 0);
	}

	return new bgfx_suppressor(check_sliders, condition, mode, values);
}

bool suppressor_reader::validate_parameters(const Value& value, std::string prefix)
{
	if (!READER_CHECK(value["type"].IsString(), (prefix + "Value 'type' must be a string\n").c_str())) return false;
	if (!READER_CHECK(value.HasMember("name"), (prefix + "Must have string value 'name'\n").c_str())) return false;
	if (!READER_CHECK(value["name"].IsString(), (prefix + "Value 'name' must be a string\n").c_str())) return false;
	if (!READER_CHECK(value.HasMember("value"), (prefix + "Must have numeric or array value 'value'\n").c_str())) return false;
	if (!READER_CHECK(value["value"].IsNumber() || value["value"].IsArray(), (prefix + "Value 'value' must be a number or array the size of the corresponding slider type\n").c_str())) return false;
	return true;
}

bool suppressor_reader::get_values(const Value& value, std::string prefix, std::string name, int* values, const int count)
{
	const char* name_str = name.c_str();
	const Value& value_array = value[name_str];
	for (uint32_t i = 0; i < value_array.Size() && i < count; i++)
	{
		if (!READER_CHECK(value_array[i].IsInt(), (prefix + "value[" + std::to_string(i) + "] must be an integer\n").c_str())) return false;
		values[i] = value_array[i].GetInt();
	}
	return true;
}