/*
Crafter.Build
Copyright (C) 2025 Catcrafts®
Catcrafts.net

This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 3.0 of the License, or (at your option) any later version.

 This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.

You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301 USA
*/

module;
#include <iostream>
#include <memory>
#include <stdexcept>
#include <array>
#include <string>
#include <cstdio>
#include <string_view>
#include <regex>
export module Crafter.Build:Bounce;

namespace Crafter::Build {
    export std::string RunCommand(const std::string_view cmd) {
        std::array<char, 128> buffer;
        std::string result;

        std::string with = std::string(cmd) + " 2>&1";
        // Open pipe to file
        FILE* pipe = popen(with.c_str(), "r");
        if (!pipe) throw std::runtime_error("popen() failed!");

        // Read till end of process:
        while (fgets(buffer.data(), buffer.size(), pipe) != nullptr) {
            result += buffer.data();
        }

        // Close pipe
        pclose(pipe);
        return result;
    }

    export void RunCommandIgnore(const std::string_view cmd) {
        std::string with = std::string(cmd) + " > /dev/null 2>&1";
        FILE* pipe = popen(with.c_str(), "r");
        if (!pipe) throw std::runtime_error("popen() failed!");
        pclose(pipe);
    }

    export struct ClangError {
        std::string filename;
        uint32_t line_number;
        std::string error_message;
        std::string code;
    };

    export std::vector<ClangError> RunClang(const std::string_view cmd) {
        std::string result = RunCommand(cmd);
        std::vector<ClangError> errors;
        
        std::regex error_regex(R"((/[^:]+\.cpp):(\d+):\d+: error: (.*)\n\s*[0-9| ]*\s*(.*))");
        std::smatch match;

        while (std::regex_search(result, match, error_regex)) {
            ClangError error;
            error.filename = match[1].str();
            error.line_number = std::stoi(match[2].str());
            error.error_message = match[3].str();
            error.code = match[4].str();
            errors.push_back(error);
            result = match.suffix().str();
        }

        if(result != "" && errors.size() == 0) {
            throw std::runtime_error(result);
        }

        return errors;
    }
}