/*********************************************************************************
 *
 * Inviwo - Interactive Visualization Workshop
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 * Copyright (c) 2018-2020 Inviwo Foundation
 * All rights reserved.
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 * Redistribution and use in source and binary forms, with or without
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#include <inviwo/meta/includetools.hpp>
#include <inviwo/meta/util.hpp>

#include <fstream>
#include <streambuf>
#include <regex>
#include <sstream>
#include <fmt/format.h>

namespace inviwo::meta::util {

bool replaceInclude(std::filesystem::path file, std::string_view oldInclude,
                    std::string_view newInclude) {

    const auto data = [&file]() {
        std::ifstream ifs{file};
        if (!ifs) throw util::makeError("Unable to open module file '{}'", file.generic_string());
        return std::string((std::istreambuf_iterator<char>(ifs)), std::istreambuf_iterator<char>());
    }();

    const auto reInclude = std::regex(fmt::format(R"(#include\s* {})", oldInclude));

    if (std::regex_search(data, reInclude)) {

        const auto replaced =
            std::regex_replace(data, reInclude, fmt::format(R"(#include {})", newInclude));

        std::ofstream ofs{file};
        if (!ofs) throw util::makeError("Unable to open module file '{}'", file.generic_string());
        ofs << replaced;

        return true;
    } else {
        return false;
    }
}

}  // namespace inviwo::meta::util
