/*
 * Author: Sven Gothel <sgothel@jausoft.com>
 * Copyright (c) 2020 Gothel Software e.K.
 * Copyright (c) 2020 ZAFENA AB
 *
 * Permission is hereby granted, free of charge, to any person obtaining
 * a copy of this software and associated documentation files (the
 * "Software"), to deal in the Software without restriction, including
 * without limitation the rights to use, copy, modify, merge, publish,
 * distribute, sublicense, and/or sell copies of the Software, and to
 * permit persons to whom the Software is furnished to do so, subject to
 * the following conditions:
 *
 * The above copyright notice and this permission notice shall be
 * included in all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
 * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
 * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
 * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 */

#ifndef DBT_DEBUG_HPP_
#define DBT_DEBUG_HPP_

#include <cstdint>
#include <cinttypes>
#include <cstring>
#include <string>
#include <cstdio>
#include <cstdarg>

extern "C" {
    #include <errno.h>
}

#include "DBTEnv.hpp"

// #define PERF_PRINT_ON 1

namespace direct_bt {

    /** Use for environment-variable DBTEnv::DEBUG conditional debug messages, prefix '[elapsed_time] Debug: '. */
    void DBG_PRINT(const char * format, ...);

    /** Use for environment-variable DBTEnv::VERBOSE conditional info messages, prefix '[elapsed_time] Info: '. */
    void INFO_PRINT(const char * format, ...);

    #ifdef PERF_PRINT_ON
        #define PERF_TS_T0()  const uint64_t _t0 = direct_bt::getCurrentMilliseconds()

        #define PERF_TS_TD(m)  { const uint64_t _td = direct_bt::getCurrentMilliseconds() - _t0; \
                                 fprintf(stderr, "[%'9" PRIu64 "] %s done in %d ms,\n", direct_bt::DBTEnv::getElapsedMillisecond(), (m), (int)_td); }
    #else
        #define PERF_TS_T0()
        #define PERF_TS_TD(m)
    #endif

    /** Use for unconditional error messages, prefix '[elapsed_time] Error @ file:line: '. Function also appends last errno and strerror(errno). */
    void ERR_PRINTv(const char *file, const int line, const char * format, va_list args);

    /** Use for unconditional error messages, prefix '[elapsed_time] Error @ file:line: '. Function also appends last errno and strerror(errno). */
    void ERR_PRINT2(const char *file, const int line, const char * format, ...);

    /** Use for unconditional error messages, prefix '[elapsed_time] Error @ FILE:LINE: '. Function also appends last errno and strerror(errno). */
    #define ERR_PRINT(...) { ERR_PRINT2(__FILE__, __LINE__, __VA_ARGS__); }

    /** Use for unconditional warning messages, prefix '[elapsed_time] Warning @ file:line: ' */
    void WARN_PRINTv(const char *file, const int line, const char * format, va_list args);

    /** Use for unconditional warning messages, prefix '[elapsed_time] Warning @ file:line: ' */
    void WARN_PRINT2(const char *file, const int line, const char * format, ...);

    /** Use for unconditional warning messages, prefix '[elapsed_time] Warning @ FILE:LINE: ' */
    #define WARN_PRINT(...) { WARN_PRINT2(__FILE__, __LINE__, __VA_ARGS__); }

    /** Use for unconditional plain messages, prefix '[elapsed_time] '. */
    void PLAIN_PRINT(const char * format, ...);

    /** Use for conditional plain messages, prefix '[elapsed_time] '. */
    void COND_PRINT(const bool condition, const char * format, ...);

    template<class ListElemType>
    inline void printSharedPtrList(std::string prefix, std::vector<std::shared_ptr<ListElemType>> & list) {
        fprintf(stderr, "%s: Start: %zd elements\n", prefix.c_str(), (size_t)list.size());
        int idx = 0;
        for (auto it = list.begin(); it != list.end(); idx++) {
            std::shared_ptr<ListElemType> & e = *it;
            if ( nullptr != e ) {
                fprintf(stderr, "%s[%d]: useCount %zd, mem %p\n", prefix.c_str(), idx, (size_t)e.use_count(), e.get());
            } else {
                fprintf(stderr, "%s[%d]: NULL\n", prefix.c_str(), idx);
            }
            ++it;
        }
    }

} // namespace direct_bt

#endif /* DBT_DEBUG_HPP_ */