#include "log.hpp"

#include <windows.h>

#include <filesystem>
#include <string>

namespace t5de::log {

// Each line is one appending write, so lines from several processes don't mix.
void write(std::string_view line)
{
    static const HANDLE file = [] {
        wchar_t temp[MAX_PATH + 1];
        const DWORD length = GetTempPathW(MAX_PATH + 1, temp);
        if (length == 0 || length > MAX_PATH) {
            return INVALID_HANDLE_VALUE;
        }
        return CreateFileW((std::filesystem::path(temp) / L"t5de-renderer-process.log").c_str(), FILE_APPEND_DATA,
                           FILE_SHARE_READ | FILE_SHARE_WRITE | FILE_SHARE_DELETE, nullptr, OPEN_ALWAYS,
                           FILE_ATTRIBUTE_NORMAL, nullptr);
    }();
    if (file != INVALID_HANDLE_VALUE) {
        const std::string text = std::format("{}: {}\n", GetCurrentProcessId(), line);
        DWORD written = 0;
        WriteFile(file, text.data(), static_cast<DWORD>(text.size()), &written, nullptr);
    }
}

} // namespace t5de::log