#pragma once

#include "CodegenConfig.hpp"
#include "CodegenMacros.hpp"

#include "CodegenOutput.inl"

#include <Macros.hpp>
#include <ScopeGuard.hpp>

#include <cstdio>
#include <cstdlib>
#include <filesystem>

namespace Utils {

std::string ReadFileAsString(const std::filesystem::path& path) {
	auto file = Utils::OpenCstdioFile(path, Utils::Read);
	if (!file) throw std::runtime_error("Failed to open source file.");
	DEFER { fclose(file); };

	fseek(file, 0, SEEK_END);
	auto fileSize = ftell(file);
	rewind(file);

	std::string result(fileSize, '\0');
	fread(result.data(), fileSize, 1, file);

	return result;
}

bool WriteOutputFile(const CodegenOutput& output, std::string_view dir, std::string_view filename, std::string_view additionalSuffix = {}) {
	char path[2048];
	snprintf(path, sizeof(path), "%.*s/%.*s%.*s", PRINTF_STRING_VIEW(dir), PRINTF_STRING_VIEW(filename), PRINTF_STRING_VIEW(additionalSuffix));

	auto outputFile = Utils::OpenCstdioFile(path, Utils::WriteTruncate);
	if (!outputFile) {
		printf("[ERROR] unable to open output file %s\n", path);
		return false;
	}
	DEFER { fclose(outputFile); };

	DEBUG_PRINTF("Writing output %s\n", path);
	output.Write(outputFile);

	return true;
}

void ProduceGeneratedHeaderFileHeader(CodegenOutput& output) {
	output.AddOutputThing(CodegenOutputThing{
		.text = &R"""(
// This file is generated. Any changes will be overidden when building.
#pragma once

#include <MetadataBase.hpp>
)"""[1],
	});
}

void ProduceGeneratedSourceFileHeader(CodegenOutput& output) {
	output.AddOutputThing(CodegenOutputThing{
		.text = &R"""(
// This file is generated. Any changes will be overidden when building.
#include "GeneratedCode.hpp"

#include <frozen/string.h>
#include <frozen/unordered_map.h>
using namespace std::literals;
		)"""[1],
	});
}

} // namespace Utils