#include <string.h>

#include "plugin_manager_util.h"

/******************************************************************************
 * Malloc
 ******************************************************************************/

char *safe_dup(const char *str)
{
	if (str == NULL)
	{
		return NULL;
	}

	char *dup = safe_alloc(char, strlen(str) + 1);
	memcpy(dup, str, strlen(str));

	return dup;
}

/******************************************************************************
 * Session State
 ******************************************************************************/

struct session_state_map
{
	const char *state_str;
	enum session_state state_int;
};

static struct session_state_map state_map[] = {
	{"SESSION_STATE_INVALID", SESSION_STATE_INVALID},
	{"SESSION_STATE_OPENING", SESSION_STATE_OPENING},
	{"SESSION_STATE_ACTIVE", SESSION_STATE_ACTIVE},
	{"SESSION_STATE_CLOSING", SESSION_STATE_CLOSING},
	{"SESSION_STATE_ALL", SESSION_STATE_ALL},
};

enum session_state session_state_str2int(const char *state_str)
{
	enum session_state state_int = SESSION_STATE_INVALID;
	int num = sizeof(state_map) / sizeof(state_map[0]);

	char *buffer = safe_dup(state_str);
	char *token = strtok(buffer, "|");
	while (token)
	{
		for (int i = 0; i < num; i++)
		{
			if (strcmp(token, state_map[i].state_str) == 0)
			{
				state_int = (enum session_state)(state_int | state_map[i].state_int);
			}
		}
		token = strtok(NULL, "|");
	}
	safe_free(buffer);

	return state_int;
}

void session_state_int2str(enum session_state state_int, char *buffer, int size)
{
	int used = 0;
	int num = sizeof(state_map) / sizeof(state_map[0]);

	if (state_int == SESSION_STATE_INVALID)
	{
		snprintf(buffer, size, "%s", "SESSION_STATE_INVALID");
		return;
	}

	if (state_int == SESSION_STATE_ALL)
	{
		snprintf(buffer, size, "%s", "SESSION_STATE_ALL");
		return;
	}

	for (int i = 0; i < num; i++)
	{
		if (state_map[i].state_int & state_int)
		{
			if (state_map[i].state_int == SESSION_STATE_ALL && state_int != SESSION_STATE_ALL)
			{
				continue;
			}
			used += snprintf(buffer + used, size - used, "%s|", state_map[i].state_str);
		}
	}

	if (used)
	{
		buffer[used - 1] = '\0';
	}
}