#include "ipc.h"

#define NTAB(t)     ((int) (sizeof (t) / sizeof (t)[0]))

struct ipc_errors_verbose {
	enum ipc_errors error_code;
	char * explanation_string;
};

static struct ipc_errors_verbose ipc_errors_verbose [] = {

	/* general errors */
	IPC_ERROR_NONE, "no error"
	, IPC_ERROR_NOT_ENOUGH_MEMORY, "not enough memory"
	, IPC_ERROR_CLOSED_RECIPIENT, "closed recipient"

	, IPC_ERROR_SERVER_INIT__NO_ENVIRONMENT_PARAM, "ipc_server_init: no environment param"
	, IPC_ERROR_SERVER_INIT__NO_SERVICE_PARAM,     "ipc_server_init: no service param"
	, IPC_ERROR_SERVER_INIT__NO_SERVER_NAME_PARAM, "ipc_server_init: no server name param"
	, IPC_ERROR_SERVER_INIT__MALLOC,               "ipc_server_init: error on malloc function"

	, IPC_ERROR_CONNECTION__NO_SERVER,            "ipc_connection: no server parameter"
	, IPC_ERROR_CONNECTION__NO_SERVICE_NAME,      "ipc_connection: no service name parameter"
	, IPC_ERROR_CONNECTION__NO_ENVIRONMENT_PARAM, "ipc_connection: no environment param"
	, IPC_ERROR_USOCK_CONNECT__CONNECT,           "ipc_connection: error on the connect function"

	, IPC_ERROR_CONNECTION_GEN__NO_CINFO, "ipc_connection_gen: no cinfo"

	, IPC_ERROR_ACCEPT__NO_SERVICE_PARAM, "ipc_accept: no service param"
	, IPC_ERROR_ACCEPT__NO_CLIENT_PARAM,  "ipc_accept: no client param"
	, IPC_ERROR_ACCEPT,                   "ipc_accept: error on accept function"

	, IPC_ERROR_HANDLE_NEW_CONNECTION__NO_CINFO_PARAM,  "ipc_handle_new_connection: no cinfo param"
	, IPC_ERROR_HANDLE_NEW_CONNECTION__NO_CINFOS_PARAM, "ipc_handle_new_connection: no cinfos param"

	, IPC_ERROR_WAIT_EVENT__SELECT,           "ipc_wait_event: error on the select function"
	, IPC_ERROR_WAIT_EVENT__NO_CLIENTS_PARAM, "ipc_wait_event: no clients param"
	, IPC_ERROR_WAIT_EVENT__NO_EVENT_PARAM,   "ipc_wait_event: no event param"

	, IPC_ERROR_HANDLE_NEW_CONNECTION__MALLOC, "ipc_handle_new_connection: error on malloc function"

	, IPC_ERROR_ADD__EMPTY_LIST,         "ipc_clients_add: empty list: realloc failed"
	, IPC_ERROR_ADD__NO_PARAM_CLIENTS,   "ipc_clients_add: no param client list"
	, IPC_ERROR_ADD__NO_PARAM_CLIENT,    "ipc_clients_add: no param client"

	, IPC_ERROR_ADD_FD__NO_PARAM_CINFOS,  "ipc_add_fd: no cinfos param"
	, IPC_ERROR_ADD_FD__EMPTY_LIST,       "ipc_add_fd: empty list after realloc (memory problem)"

	, IPC_ERROR_DEL_FD__NO_PARAM_CINFOS,    "ipc_del_fd: no cinfos param"
	, IPC_ERROR_DEL_FD__EMPTIED_LIST,       "ipc_del_fd: empty list after realloc (memory problem)"
	, IPC_ERROR_DEL_FD__EMPTY_LIST,         "ipc_del_fd: empty list"
	, IPC_ERROR_DEL_FD__CANNOT_FIND_CLIENT, "ipc_del_fd: cannot find user"

	, IPC_ERROR_DEL__EMPTY_LIST,         "ipc_clients_del: empty list"
	, IPC_ERROR_DEL__EMPTIED_LIST,       "ipc_clients_del: cannot realloc"
	, IPC_ERROR_DEL__CANNOT_FIND_CLIENT, "ipc_clients_del: cannot find client"
	, IPC_ERROR_DEL__NO_CLIENTS_PARAM,   "ipc_clients_del: no clients param"
	, IPC_ERROR_DEL__NO_CLIENT_PARAM,    "ipc_clients_del: no client param"
	

	/* unix socket */

	, IPC_ERROR_USOCK_SEND, "usock_send: cannot send message"

	, IPC_ERROR_USOCK_CONNECT__SOCKET,                "usock_connect: error on socket function"
	, IPC_ERROR_USOCK_CONNECT__WRONG_FILE_DESCRIPTOR, "usock_connect: wrong file descriptor"
	, IPC_ERROR_USOCK_CONNECT__EMPTY_PATH,            "usock_connect: empty path"

	, IPC_ERROR_USOCK_CLOSE, "usock_close: close function"

	, IPC_ERROR_USOCK_REMOVE__UNLINK,  "usock_remove: unlink function"
	, IPC_ERROR_USOCK_REMOVE__NO_FILE, "usock_remove: file not found"

	, IPC_ERROR_USOCK_INIT__EMPTY_FILE_DESCRIPTOR, "usock_init: no file descriptor"
	, IPC_ERROR_USOCK_INIT__WRONG_FILE_DESCRIPTOR, "usock_init: wrong file descriptor"
	, IPC_ERROR_USOCK_INIT__EMPTY_PATH,            "usock_init: empty path"
	, IPC_ERROR_USOCK_INIT__BIND,                  "usock_init: error on bind function"
	, IPC_ERROR_USOCK_INIT__LISTEN,                "usock_init: error on listen function"

	, IPC_ERROR_USOCK_ACCEPT__PATH_FILE_DESCRIPTOR, "ipc_usock_accept: no path file descriptor"
	, IPC_ERROR_USOCK_ACCEPT,                       "ipc_usock_accept: error on accept function"

	, IPC_ERROR_USOCK_RECV__NO_BUFFER, "ipc_usock_recv: no buffer in usock_recv"
	, IPC_ERROR_USOCK_RECV__NO_LENGTH, "ipc_usock_recv: no length in usock_recv"
	, IPC_ERROR_USOCK_RECV,            "ipc_usock_recv: cannot receive message in usock_recv"


	/* message function errors */

	, IPC_ERROR_MESSAGE_NEW__NO_MESSAGE_PARAM, "ipc_message_new: no message param"
	, IPC_ERROR_MESSAGE_READ__NO_MESSAGE_PARAM,  "ipc_message_read: no message param"

	, IPC_ERROR_MESSAGE_WRITE__NO_MESSAGE_PARAM, "ipc_message_write: no message param"
	, IPC_ERROR_MESSAGE_WRITE__NOT_ENOUGH_DATA,  "ipc_message_write: no enough data sent"

	, IPC_ERROR_MESSAGE_FORMAT__NO_MESSAGE_PARAM,    "ipc_message_format: no message param"
	, IPC_ERROR_MESSAGE_FORMAT__INCONSISTENT_PARAMS, "ipc_message_format: inconsistent params"
	, IPC_ERROR_MESSAGE_FORMAT__LENGTH,              "ipc_message_format: length param > maximum allowed"

	, IPC_ERROR_MESSAGE_FORMAT_WRITE__EMPTY_MESSAGE, "ipc_message_format_write: empty message"
	, IPC_ERROR_MESSAGE_FORMAT_WRITE__EMPTY_MSIZE,   "ipc_message_format_write: empty message size"
	, IPC_ERROR_MESSAGE_FORMAT_WRITE__EMPTY_BUFFER,  "ipc_message_format_write: empty buffer"

	, IPC_ERROR_MESSAGE_FORMAT_READ__EMPTY_MESSAGE, "ipc_message_format_read: empty message"
	, IPC_ERROR_MESSAGE_FORMAT_READ__EMPTY_BUFFER,  "ipc_message_format_read: empty buffer"
	, IPC_ERROR_MESSAGE_FORMAT_READ__MESSAGE_SIZE,  "ipc_message_format_read: message size > maximum allowed"

	, IPC_ERROR_MESSAGE_EMPTY__EMPTY_MESSAGE_LIST, "ipc_message_empty: empty message list"
};

const char * ipc_errors_get (enum ipc_errors e)
{
	for (int i = 0 ; i < NTAB(ipc_errors_verbose) ; i++) {
		if (ipc_errors_verbose[i].error_code == e) {
			return ipc_errors_verbose[i].explanation_string;
		}
	}

	return NULL;
}