/* -*- c-basic-offset: 2 -*- */
/*
  Copyright(C) 2013-2016  Brazil
  Copyright(C) 2020  Sutou Kouhei <kou@clear-code.com>

  This library is free software; you can redistribute it and/or
  modify it under the terms of the GNU Lesser General Public
  License version 2.1 as published by the Free Software Foundation.

  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
*/

#pragma once

#include "grn.h"

#ifdef __cplusplus
extern "C" {
#endif

#define  GRN_EMERG  GRN_LOG_EMERG
#define  GRN_ALERT  GRN_LOG_ALERT
#define  GRN_CRIT   GRN_LOG_CRIT
#define  GRN_ERROR  GRN_LOG_ERROR
#define  GRN_WARN   GRN_LOG_WARNING
#define  GRN_OK     GRN_LOG_NOTICE

#define ERRCLR(ctx) do {\
  if (ctx) {\
    ((grn_ctx *)ctx)->errlvl = GRN_OK;\
    if (((grn_ctx *)ctx)->rc != GRN_CANCEL) {\
      ((grn_ctx *)ctx)->rc = GRN_SUCCESS;\
      ((grn_ctx *)ctx)->errbuf[0] = '\0';\
    }\
  }\
  errno = 0;\
  grn_gctx.errlvl = GRN_OK;\
  grn_gctx.rc = GRN_SUCCESS;\
} while (0)

GRN_API grn_bool grn_ctx_impl_should_log(grn_ctx *ctx);
GRN_API void grn_ctx_impl_set_current_error_message(grn_ctx *ctx);

GRN_API void grn_ctx_log(grn_ctx *ctx, const char *fmt, ...) GRN_ATTRIBUTE_PRINTF(2);
GRN_API void grn_ctx_logv(grn_ctx *ctx, const char *fmt, va_list ap);
GRN_API void grn_ctx_log_back_trace(grn_ctx *ctx, grn_log_level level);

#define ERRSET(ctx,lvl,r,...) do {\
  grn_ctx *ctx_ = (grn_ctx *)ctx;\
  ctx_->errlvl = (lvl);\
  if (ctx_->rc != GRN_CANCEL) {\
    ctx_->rc = (r);\
  }\
  ctx_->errfile = __FILE__;\
  ctx_->errline = __LINE__;\
  ctx_->errfunc = __FUNCTION__;\
  grn_ctx_log(ctx, __VA_ARGS__);\
  if (grn_ctx_impl_should_log(ctx)) {\
    grn_ctx_impl_set_current_error_message(ctx);\
    GRN_LOG(ctx, lvl, __VA_ARGS__);\
    if (lvl <= GRN_LOG_ERROR) { grn_ctx_log_back_trace(ctx, lvl); } \
  }\
} while (0)

#define ERRP(ctx,lvl) \
  (((ctx) && ((grn_ctx *)(ctx))->errlvl <= (lvl)) || (grn_gctx.errlvl <= (lvl)))

#ifdef ERR
#  undef ERR
#endif /* ERR */
#define CRIT(rc,...) ERRSET(ctx, GRN_CRIT, (rc),  __VA_ARGS__)
#define ERR(rc,...) ERRSET(ctx, GRN_ERROR, (rc),  __VA_ARGS__)
#define WARN(rc,...) ERRSET(ctx, GRN_WARN, (rc),  __VA_ARGS__)
#define MERR(...) ERRSET(ctx, GRN_ALERT, GRN_NO_MEMORY_AVAILABLE,  __VA_ARGS__)
#define ALERT(...) ERRSET(ctx, GRN_ALERT, GRN_SUCCESS,  __VA_ARGS__)

#define ERR_CAST(column, range, element) do {\
  grn_obj inspected;\
  char column_name[GRN_TABLE_MAX_KEY_SIZE];\
  int column_name_size;\
  char range_name[GRN_TABLE_MAX_KEY_SIZE];\
  int range_name_size;\
  GRN_TEXT_INIT(&inspected, 0);\
  grn_inspect(ctx, &inspected, element);\
  if (grn_obj_is_id_accessor(ctx, column)) {\
    grn_strncpy(column_name,\
                GRN_TABLE_MAX_KEY_SIZE,\
                GRN_COLUMN_NAME_ID,\
                GRN_COLUMN_NAME_ID_LEN + 1);\
    column_name_size = GRN_COLUMN_NAME_ID_LEN;\
  } else {\
    column_name_size = grn_obj_name(ctx, column, column_name,\
                                    GRN_TABLE_MAX_KEY_SIZE);\
  }\
  range_name_size = grn_obj_name(ctx, range, range_name,\
                                 GRN_TABLE_MAX_KEY_SIZE);\
  ERR(GRN_INVALID_ARGUMENT, "<%.*s>: failed to cast to <%.*s>: <%.*s>",\
      column_name_size, column_name,\
      range_name_size, range_name,\
      (int)GRN_TEXT_LEN(&inspected), GRN_TEXT_VALUE(&inspected));\
  GRN_OBJ_FIN(ctx, &inspected);\
} while (0)

#define USER_MESSAGE_SIZE 1024

#ifdef WIN32

#define SERR(...) do {\
  grn_rc rc;\
  int error_code;\
  const char *system_message;\
  char user_message[USER_MESSAGE_SIZE];\
  error_code = GetLastError();\
  system_message = grn_current_error_message();\
  rc = grn_windows_error_code_to_rc(error_code);\
  grn_snprintf(user_message,\
               USER_MESSAGE_SIZE, USER_MESSAGE_SIZE,\
               __VA_ARGS__);\
  ERR(rc, "system error[%d]: %s: %s",\
      error_code, system_message, user_message);\
} while (0)

#define SOERR(...) do {\
  grn_rc rc;\
  const char *m;\
  char user_message[USER_MESSAGE_SIZE];\
  int e = WSAGetLastError();\
  switch (e) {\
  case WSANOTINITIALISED :\
    rc = GRN_SOCKET_NOT_INITIALIZED;\
    m = "please call grn_com_init first";\
    break;\
  case WSAEFAULT :\
    rc = GRN_BAD_ADDRESS;\
    m = "bad address";\
    break;\
  case WSAEINVAL :\
    rc = GRN_INVALID_ARGUMENT;\
    m = "invalid argument";\
    break;\
  case WSAEMFILE :\
    rc = GRN_TOO_MANY_OPEN_FILES;\
    m = "too many sockets";\
    break;\
  case WSAEWOULDBLOCK :\
    rc = GRN_OPERATION_WOULD_BLOCK;\
    m = "operation would block";\
    break;\
  case WSAENOTSOCK :\
    rc = GRN_NOT_SOCKET;\
    m = "given fd is not socket fd";\
    break;\
  case WSAEOPNOTSUPP :\
    rc = GRN_OPERATION_NOT_SUPPORTED;\
    m = "operation is not supported";\
    break;\
  case WSAEADDRINUSE :\
    rc = GRN_ADDRESS_IS_IN_USE;\
    m = "address is already in use";\
    break;\
  case WSAEADDRNOTAVAIL :\
    rc = GRN_ADDRESS_IS_NOT_AVAILABLE;\
    m = "address is not available";\
    break;\
  case WSAENETDOWN :\
    rc = GRN_NETWORK_IS_DOWN;\
    m = "network is down";\
    break;\
  case WSAENOBUFS :\
    rc = GRN_NO_BUFFER;\
    m = "no buffer";\
    break;\
  case WSAEISCONN :\
    rc = GRN_SOCKET_IS_ALREADY_CONNECTED;\
    m = "socket is already connected";\
    break;\
  case WSAENOTCONN :\
    rc = GRN_SOCKET_IS_NOT_CONNECTED;\
    m = "socket is not connected";\
    break;\
  case WSAESHUTDOWN :\
    rc = GRN_SOCKET_IS_ALREADY_SHUTDOWNED;\
    m = "socket is already shutdowned";\
    break;\
  case WSAETIMEDOUT :\
    rc = GRN_OPERATION_TIMEOUT;\
    m = "connection time out";\
    break;\
  case WSAECONNREFUSED :\
    rc = GRN_CONNECTION_REFUSED;\
    m = "connection refused";\
    break;\
  case WSAEINTR :\
    rc = GRN_INTERRUPTED_FUNCTION_CALL;\
    m = "interrupted function call";\
    break;\
  case WSAECONNRESET :\
    rc = GRN_CONNECTION_RESET;\
    m = "connection reset by peer";\
    break;\
  default:\
    rc = GRN_UNKNOWN_ERROR;\
    m = "unknown error";\
    break;\
  }\
  grn_snprintf(user_message,\
               USER_MESSAGE_SIZE, USER_MESSAGE_SIZE,\
               __VA_ARGS__);\
  ERR(rc, "socket error[%d]: %s: %s",\
      e, m, user_message);\
} while (0)

#define ERRNO_ERR(...) do {\
  grn_rc rc;\
  int errno_keep = errno;\
  grn_bool show_errno = GRN_FALSE;\
  const char *system_message;\
  char user_message[USER_MESSAGE_SIZE];\
  system_message = grn_strerror(errno);\
  switch (errno_keep) {\
  case EPERM : rc = GRN_OPERATION_NOT_PERMITTED; break;\
  case ENOENT : rc = GRN_NO_SUCH_FILE_OR_DIRECTORY; break;\
  case ESRCH : rc = GRN_NO_SUCH_PROCESS; break;\
  case EINTR : rc = GRN_INTERRUPTED_FUNCTION_CALL; break;\
  case EIO : rc = GRN_INPUT_OUTPUT_ERROR; break;\
  case E2BIG : rc = GRN_ARG_LIST_TOO_LONG; break;\
  case ENOEXEC : rc = GRN_EXEC_FORMAT_ERROR; break;\
  case EBADF : rc = GRN_BAD_FILE_DESCRIPTOR; break;\
  case ECHILD : rc = GRN_NO_CHILD_PROCESSES; break;\
  case EAGAIN: rc = GRN_OPERATION_WOULD_BLOCK; break;\
  case ENOMEM : rc = GRN_NO_MEMORY_AVAILABLE; break;\
  case EACCES : rc = GRN_PERMISSION_DENIED; break;\
  case EFAULT : rc = GRN_BAD_ADDRESS; break;\
  case EEXIST : rc = GRN_FILE_EXISTS; break;\
  /* case EXDEV : */\
  case ENODEV : rc = GRN_NO_SUCH_DEVICE; break;\
  case ENOTDIR : rc = GRN_NOT_A_DIRECTORY; break;\
  case EISDIR : rc = GRN_IS_A_DIRECTORY; break;\
  case EINVAL : rc = GRN_INVALID_ARGUMENT; break;\
  case EMFILE : rc = GRN_TOO_MANY_OPEN_FILES; break;\
  case ENOTTY : rc = GRN_INAPPROPRIATE_I_O_CONTROL_OPERATION; break;\
  case EFBIG : rc = GRN_FILE_TOO_LARGE; break;\
  case ENOSPC : rc = GRN_NO_SPACE_LEFT_ON_DEVICE; break;\
  case ESPIPE : rc = GRN_INVALID_SEEK; break;\
  case EROFS : rc = GRN_READ_ONLY_FILE_SYSTEM; break;\
  case EMLINK : rc = GRN_TOO_MANY_LINKS; break;\
  case EPIPE : rc = GRN_BROKEN_PIPE; break;\
  case EDOM : rc = GRN_DOMAIN_ERROR; break;\
  case ERANGE : rc = GRN_RANGE_ERROR; break;\
  case EDEADLOCK : rc = GRN_RESOURCE_DEADLOCK_AVOIDED; break;\
  case ENAMETOOLONG : rc = GRN_FILENAME_TOO_LONG; break;\
  case EILSEQ : rc = GRN_ILLEGAL_BYTE_SEQUENCE; break;\
  case ECONNRESET : rc = GRN_CONNECTION_RESET; break;\
  /* case STRUNCATE : */\
  default :\
    rc = GRN_UNKNOWN_ERROR;\
    show_errno = GRN_TRUE;\
    break;\
  }\
  grn_snprintf(user_message,\
               USER_MESSAGE_SIZE, USER_MESSAGE_SIZE,\
               __VA_ARGS__);\
  if (show_errno) {\
    ERR(rc, "system call error[%d]: %s: %s",\
        errno_keep, system_message, user_message);\
  } else {\
    ERR(rc, "system call error: %s: %s",\
        system_message, user_message);\
  }\
} while (0)

#else /* WIN32 */

#define SERR(...) do {\
  grn_rc rc;\
  int errno_keep = errno;\
  grn_bool show_errno = GRN_FALSE;\
  const char *system_message = grn_current_error_message();\
  char user_message[USER_MESSAGE_SIZE];\
  switch (errno_keep) {\
  case ELOOP : rc = GRN_TOO_MANY_SYMBOLIC_LINKS; break;\
  case ENAMETOOLONG : rc = GRN_FILENAME_TOO_LONG; break;\
  case ENOENT : rc = GRN_NO_SUCH_FILE_OR_DIRECTORY; break;\
  case ENOMEM : rc = GRN_NO_MEMORY_AVAILABLE; break;\
  case ENOTDIR : rc = GRN_NOT_A_DIRECTORY; break;\
  case EPERM : rc = GRN_OPERATION_NOT_PERMITTED; break;\
  case ESRCH : rc = GRN_NO_SUCH_PROCESS; break;\
  case EINTR : rc = GRN_INTERRUPTED_FUNCTION_CALL; break;\
  case EIO : rc = GRN_INPUT_OUTPUT_ERROR; break;\
  case ENXIO : rc = GRN_NO_SUCH_DEVICE_OR_ADDRESS; break;\
  case E2BIG : rc = GRN_ARG_LIST_TOO_LONG; break;\
  case ENOEXEC : rc = GRN_EXEC_FORMAT_ERROR; break;\
  case EBADF : rc = GRN_BAD_FILE_DESCRIPTOR; break;\
  case ECHILD : rc = GRN_NO_CHILD_PROCESSES; break;\
  case EACCES : rc = GRN_PERMISSION_DENIED; break;\
  case EFAULT : rc = GRN_BAD_ADDRESS; break;\
  case EBUSY : rc = GRN_RESOURCE_BUSY; break;\
  case EEXIST : rc = GRN_FILE_EXISTS; break;\
  case ENODEV : rc = GRN_NO_SUCH_DEVICE; break;\
  case EISDIR : rc = GRN_IS_A_DIRECTORY; break;\
  case EINVAL : rc = GRN_INVALID_ARGUMENT; break;\
  case EMFILE : rc = GRN_TOO_MANY_OPEN_FILES; break;\
  case EFBIG : rc = GRN_FILE_TOO_LARGE; break;\
  case ENOSPC : rc = GRN_NO_SPACE_LEFT_ON_DEVICE; break;\
  case EROFS : rc = GRN_READ_ONLY_FILE_SYSTEM; break;\
  case EMLINK : rc = GRN_TOO_MANY_LINKS; break;\
  case EPIPE : rc = GRN_BROKEN_PIPE; break;\
  case EDOM : rc = GRN_DOMAIN_ERROR; break;\
  case ERANGE : rc = GRN_RANGE_ERROR; break;\
  case ENOTSOCK : rc = GRN_NOT_SOCKET; break;\
  case EADDRINUSE : rc = GRN_ADDRESS_IS_IN_USE; break;\
  case ENETDOWN : rc = GRN_NETWORK_IS_DOWN; break;\
  case ENOBUFS : rc = GRN_NO_BUFFER; break;\
  case EISCONN : rc = GRN_SOCKET_IS_ALREADY_CONNECTED; break;\
  case ENOTCONN : rc = GRN_SOCKET_IS_NOT_CONNECTED; break;\
    /*\
  case ESOCKTNOSUPPORT :\
  case EOPNOTSUPP :\
  case EPFNOSUPPORT :\
    */\
  case EPROTONOSUPPORT : rc = GRN_OPERATION_NOT_SUPPORTED; break;\
  case ESHUTDOWN : rc = GRN_SOCKET_IS_ALREADY_SHUTDOWNED; break;\
  case ETIMEDOUT : rc = GRN_OPERATION_TIMEOUT; break;\
  case ECONNREFUSED: rc = GRN_CONNECTION_REFUSED; break;\
  case EAGAIN: rc = GRN_OPERATION_WOULD_BLOCK; break;\
  case ECONNRESET: rc = GRN_CONNECTION_RESET; break;\
  default :\
    rc = GRN_UNKNOWN_ERROR;\
    show_errno = GRN_TRUE;\
    break;\
  }\
  grn_snprintf(user_message,\
               USER_MESSAGE_SIZE, USER_MESSAGE_SIZE,\
               __VA_ARGS__);\
  if (show_errno) {\
    ERR(rc, "system call error[%d]: %s: %s",\
        errno_keep, system_message, user_message);\
  } else {\
    ERR(rc, "system call error: %s: %s",\
        system_message, user_message);\
  }\
} while (0)

#define SOERR(...) SERR(__VA_ARGS__)

#define ERRNO_ERR(...) SERR(__VA_ARGS__)

#endif /* WIN32 */

#define GERR(rc,...) ERRSET(&grn_gctx, GRN_ERROR, (rc),  __VA_ARGS__)
#define GMERR(...)   ERRSET(&grn_gctx, GRN_ALERT, GRN_NO_MEMORY_AVAILABLE,  __VA_ARGS__)


GRN_API const char *grn_current_error_message(void);
GRN_API const char *grn_strerror(int error_code);

GRN_API grn_rc grn_windows_error_code_to_rc(int error_code);

#ifdef __cplusplus
}
#endif
