#ifndef __EX_LOG_H__
#define __EX_LOG_H__

#include "ex_types.h"
#include "ex_thread.h"

#define EX_LOG_LEVEL_DEBUG          0
#define EX_LOG_LEVEL_VERBOSE        1
#define EX_LOG_LEVEL_INFO           2
#define EX_LOG_LEVEL_WARN           3
#define EX_LOG_LEVEL_ERROR          4

#define EX_LOG_FILE_MAX_SIZE        1024*1024*10
#define EX_LOG_FILE_MAX_COUNT       10

class ExLogger
{
public:
    ExLogger();
    ~ExLogger();

    bool set_log_file(const ex_wstr &log_path, const ex_wstr &log_name, ex_u32 max_filesize, ex_u8 max_count);
    void log_a(int level, const char *fmt, va_list valist);
    void log_w(int level, const wchar_t *fmt, va_list valist);
    bool write_a(const char *buf);
    bool write_w(const wchar_t *buf);

protected:
    bool _open_file();

    // 将现有日志文件改名备份，然后新开一个日志文件
    bool _rotate_file();

public:
    ExThreadLock lock;
    int          min_level;
    bool         debug_mode;
    bool         to_console;

#ifdef EX_OS_WIN32
    HANDLE console_handle;
#endif

protected:
    ex_u32  m_filesize;
    ex_u32  m_max_filesize;
    ex_u8   m_max_count;
    ex_wstr m_path;
    ex_wstr m_filename;
    ex_wstr m_fullname;

#ifdef EX_OS_WIN32
    HANDLE m_file;
#else
    FILE *m_file;
#endif
};

void EXLOG_USE_LOGGER(ExLogger *logger);

void EXLOG_LEVEL(int min_level);
void EXLOG_DEBUG(bool debug_mode);

// 设定日志文件名及路径，如未指定路径，则为可执行程序所在目录下的log目录。
void EXLOG_FILE(const wchar_t *log_file, const wchar_t *log_path = nullptr, ex_u32 max_filesize = EX_LOG_FILE_MAX_SIZE, ex_u8 max_filecount = EX_LOG_FILE_MAX_COUNT);

void EXLOG_CONSOLE(bool output_to_console);

#define EXLOGD ex_printf_d
#define EXLOGV ex_printf_v
#define EXLOGI ex_printf_i
#define EXLOGW ex_printf_w
#define EXLOGE ex_printf_e
#define EXLOG_BIN ex_printf_bin

#ifdef EX_OS_WIN32
#define EXLOGE_WIN ex_printf_e_lasterror
void ex_printf_e_lasterror(const char* fmt, ...);
void ex_printf_e_lasterror(const wchar_t* fmt, ...);
#endif


void ex_printf_d(const char *fmt, ...);
void ex_printf_v(const char *fmt, ...);
void ex_printf_i(const char *fmt, ...);
void ex_printf_w(const char *fmt, ...);
void ex_printf_e(const char *fmt, ...);

void ex_printf_d(const wchar_t *fmt, ...);
void ex_printf_v(const wchar_t *fmt, ...);
void ex_printf_i(const wchar_t *fmt, ...);
void ex_printf_w(const wchar_t *fmt, ...);
void ex_printf_e(const wchar_t *fmt, ...);

void ex_printf_bin(const ex_u8 *bin_data, size_t bin_size, const char *fmt, ...);
void ex_printf_bin(const ex_u8 *bin_data, size_t bin_size, const wchar_t *fmt, ...);


#endif // __EX_LOG_H__