/* SPDX-License-Identifier: GPL-3.0-or-later

 * Copyright © 2016-2025 The TokTok team.

 * Copyright © 2013-2015 Tox project.

 */

/**

 * Text logging abstraction.

 */

#include "logger.h"

#include <assert.h>

#include <stdarg.h>

#include <stdio.h>

#include <stdlib.h>

#include <string.h>

#include "ccompat.h"

#include "mem.h"

struct Logger {

    const Memory *_Nonnull mem;

    logger_cb *_Nullable callback;

    void *_Nullable context;

    void *_Nullable userdata;

};

/*

 * Public Functions

 */

Logger *logger_new(const Memory *mem)

{

    Logger *log = (Logger *)mem_alloc(mem, sizeof(Logger));

    if (log == nullptr) {

        return nullptr;

    }

    log->mem = mem;

    return log;

}

void logger_kill(Logger *log)

{

    if (log == nullptr) {

        return;

    }

    mem_delete(log->mem, log);

}

void logger_callback_log(Logger *log, logger_cb *function, void *context, void *userdata)

{

    assert(log != nullptr);

    log->callback = function;

    log->context  = context;

    log->userdata = userdata;

}

void logger_write(const Logger *log, Logger_Level level, const char *file, uint32_t line, const char *func,

                  const char *format, ...)

{

    if (log == nullptr) {

        return;

    }

    if (log->callback == nullptr) {

        return;

    }

    // Only pass the file name, not the entire file path, for privacy reasons.

    // The full path may contain PII of the person compiling toxcore (their

    // username and directory layout).

    const char *filename = strrchr(file, '/');

    if (filename != nullptr) {

        file = &filename[1];

    }

#if defined(_WIN32) || defined(__CYGWIN__)

    // On Windows, the path separator *may* be a backslash, so we look for that

    // one too.

    const char *windows_filename = strrchr(file, '\\');

    file = windows_filename != nullptr ? windows_filename + 1 : file;

#endif /* WIN32 */

    // Format message

    char msg[1024];

    va_list args;

    va_start(args, format);

    vsnprintf(msg, sizeof(msg), format, args);

    va_end(args);

    log->callback(log->context, level, file, line, func, msg, log->userdata);

}

void logger_abort(void)

{

    abort();

}