/*
 * Copyright (c) 2014 Samsung Electronics Co., Ltd All Rights Reserved
 *
 * Licensed under the Apache License, Version 2.0 (the License);
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an AS IS BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */


#ifndef __TIZEN_APPFW_APP_COMMON_H__
#define __TIZEN_APPFW_APP_COMMON_H__

#include <app_types.h>

#ifdef __cplusplus
extern "C" {
#endif

/**
 * @file app_common.h
 */

/**
 * @addtogroup CAPI_APP_COMMON_MODULE
 * @{
 */


/**
 * @brief Enumeration for system events
 * @since_tizen @if MOBILE 2.3 @elseif WEARABLE 2.3.1 @endif
 */
typedef enum
{
	APP_EVENT_LOW_MEMORY, /**< The low memory event */
	APP_EVENT_LOW_BATTERY, /**< The low battery event */
	APP_EVENT_LANGUAGE_CHANGED, /**< The system language changed event */
	APP_EVENT_DEVICE_ORIENTATION_CHANGED, /**< The device orientation changed event */
	APP_EVENT_REGION_FORMAT_CHANGED, /**< The region format changed event */
	APP_EVENT_SUSPENDED_STATE_CHANGED, /**< The suspended state changed event of the application (since 2.4)
						@see app_event_get_suspended_state */
} app_event_type_e;


/**
 * @brief Enumeration for device orientation.
 * @since_tizen @if MOBILE 2.3 @elseif WEARABLE 2.3.1 @endif
 */
typedef enum
{
	APP_DEVICE_ORIENTATION_0 = 0, /**< The device is oriented in a natural position */
	APP_DEVICE_ORIENTATION_90 = 90, /**< The device's left side is at the top */
	APP_DEVICE_ORIENTATION_180 = 180, /**< The device is upside down */
	APP_DEVICE_ORIENTATION_270 = 270, /**< The device's right side is at the top */
} app_device_orientation_e;


/**
 * @brief Enumeration for low memory status.
 * @since_tizen @if MOBILE 2.3 @elseif WEARABLE 2.3.1 @endif
 */
typedef enum
{
	APP_EVENT_LOW_MEMORY_NORMAL = 0x01, /**< Normal status */
	APP_EVENT_LOW_MEMORY_SOFT_WARNING = 0x02, /**< Soft warning status */
	APP_EVENT_LOW_MEMORY_HARD_WARNING = 0x04, /**< Hard warning status */
} app_event_low_memory_status_e;


/**
 * @brief Enumeration for battery status.
 * @since_tizen @if MOBILE 2.3 @elseif WEARABLE 2.3.1 @endif
 */
typedef enum
{
	APP_EVENT_LOW_BATTERY_POWER_OFF = 1, /**< The battery status is under 1% */
	APP_EVENT_LOW_BATTERY_CRITICAL_LOW, /**< The battery status is under 5% */
} app_event_low_battery_status_e;


/**
 * @brief Enumeration for suspended state
 * @since_tizen 2.4
 */
typedef enum
{
	APP_SUSPENDED_STATE_WILL_ENTER = 0, /**< Application will enter the suspended state */
	APP_SUSPENDED_STATE_DID_EXIT, /**< Application did exit from the suspended state */
} app_suspended_state_e;

/**
 * @brief The event handler that returned from add event handler function
 *
 * @since_tizen @if MOBILE 2.3 @elseif WEARABLE 2.3.1 @endif
 * @see app_event_type_e
 * @see app_add_event_handler
 * @see app_remove_event_handler
 * @see app_event_info_h
 */
typedef struct app_event_handler* app_event_handler_h;


/**
 * @brief The system event information
 *
 * @since_tizen @if MOBILE 2.3 @elseif WEARABLE 2.3.1 @endif
 * @see app_event_get_low_memory_status
 * @see app_event_get_low_battery_status
 * @see app_event_get_language
 * @see app_event_get_region_format
 * @see app_event_get_device_orientation
 * @see app_event_get_suspended_state
 */
typedef struct app_event_info* app_event_info_h;


/**
 * @brief The system event callback function
 *
 * @since_tizen @if MOBILE 2.3 @elseif WEARABLE 2.3.1 @endif
 * @param[in] event_info The system event information
 * @param[in] user_data The user data passed from the add event handler function
 *
 * @see app_add_event_handler
 * @see app_event_info_h
 *
 * @remarks If the given @a event_info has #APP_SUSPENDED_STATE_WILL_ENTER value,
 *	the application should not call any asynchronous operations in this callback.
 *	After the callback returns, process of the application will be changed to suspended
 *	state immediately. Thus, asynchronous operations may work incorrectly. (since 2.4)
 *
 */
typedef void (*app_event_cb)(app_event_info_h event_info, void *user_data);


/**
 * @brief Gets the low memory status from given event info
 *
 * @since_tizen @if MOBILE 2.3 @elseif WEARABLE 2.3.1 @endif
 * @param[in] event_info The system event info
 * @param[out] status The low memory status
 *
 * @return 0 on success, otherwise a negative error value
 * @retval #APP_ERROR_NONE Successful
 * @retval #APP_ERROR_INVALID_PARAMETER Invalid parameter
 * @retval #APP_ERROR_INVALID_CONTEXT Invalid event context
 *
 * @see app_event_info_h
 * @see app_event_low_memory_status_e
 */
int app_event_get_low_memory_status(app_event_info_h event_info, app_event_low_memory_status_e *status);


/**
 * @brief Gets the low battery status from given event info
 *
 * @since_tizen @if MOBILE 2.3 @elseif WEARABLE 2.3.1 @endif
 * @param[in] event_info The system event info
 * @param[out] status The low battery status
 *
 * @return 0 on success, otherwise a negative error value
 * @retval #APP_ERROR_NONE Successful
 * @retval #APP_ERROR_INVALID_PARAMETER Invalid parameter
 * @retval #APP_ERROR_INVALID_CONTEXT Invalid event context
 *
 * @see app_event_info_h
 * @see app_event_low_battery_status_e
 */
int app_event_get_low_battery_status(app_event_info_h event_info, app_event_low_battery_status_e *status);


/**
 * @brief Gets the language from given event info
 *
 * @since_tizen @if MOBILE 2.3 @elseif WEARABLE 2.3.1 @endif
 * @remarks @a lang must be released using free()
 * @param[in] event_info The system event info
 * @param[out] lang The language changed
 *
 * @return 0 on success, otherwise a negative error value
 * @retval #APP_ERROR_NONE Successful
 * @retval #APP_ERROR_INVALID_PARAMETER Invalid parameter
 * @retval #APP_ERROR_INVALID_CONTEXT Invalid event context
 *
 * @see app_event_info_h
 */
int app_event_get_language(app_event_info_h event_info, char **lang);


/**
 * @brief Gets the region format from given event info
 *
 * @since_tizen @if MOBILE 2.3 @elseif WEARABLE 2.3.1 @endif
 * @remarks @a region must be released using free()
 * @param[in] event_info The system event info
 * @param[out] region The region format changed
 *
 * @return 0 on success, otherwise a negative error value
 * @retval #APP_ERROR_NONE Successful
 * @retval #APP_ERROR_INVALID_PARAMETER Invalid parameter
 * @retval #APP_ERROR_INVALID_CONTEXT Invalid event context
 *
 * @see app_event_info_h
 */
int app_event_get_region_format(app_event_info_h event_info, char **region);


/**
 * @brief Gets the device orientation from given event info
 *
 * @since_tizen @if MOBILE 2.3 @elseif WEARABLE 2.3.1 @endif
 * @param[in] event_info The system event info
 * @param[out] orientation The device orientation changed
 *
 * @return 0 on success, otherwise a negative error value
 * @retval #APP_ERROR_NONE Successful
 * @retval #APP_ERROR_INVALID_PARAMETER Invalid parameter
 * @retval #APP_ERROR_INVALID_CONTEXT Invalid event context
 *
 * @see app_event_info_h
 * @see app_device_orientation_e
 */
int app_event_get_device_orientation(app_event_info_h event_info, app_device_orientation_e *orientation);


/**
 * @brief Gets the suspended state of the application from given event info.
 *
 * @since_tizen 2.4
 * @param[in] event_info The handle for getting the suspended state
 * @param[out] state The suspended state of the application
 *
 * @return 0 on success, otherwise a negative error value
 * @retval #APP_ERROR_NONE Successful
 * @retval #APP_ERROR_INVALID_PARAMETER Invalid parameter
 * @retval #APP_ERROR_INVALID_CONTEXT Invalid event context
 *
 * @remarks The application should not use any asynchronous operations in #APP_SUSPENDED_STATE_WILL_ENTER event.
 *	Because applications will be changed to suspended state just after #APP_SUSPENDED_STATE_WILL_ENTER,
 *	asynchronous calls are not guaranteed to work properly.
 */
int app_event_get_suspended_state(app_event_info_h event_info, app_suspended_state_e *state);


/**
 * @brief Gets the ID of the application.
 *
 * @since_tizen @if MOBILE 2.3 @elseif WEARABLE 2.3.1 @endif
 * @remarks @a id must be released using free().
 *
 * @param[out] id The ID of the application
 *
 * @return @c 0 on success,
 *         otherwise a negative error value
 *
 * @retval #APP_ERROR_NONE Successful
 * @retval #APP_ERROR_INVALID_PARAMETER Invalid parameter
 * @retval #APP_ERROR_INVALID_CONTEXT The application is illegally launched, not launched by the launch system
 * @retval #APP_ERROR_OUT_OF_MEMORY Out of memory
 */
int app_get_id(char **id);


/**
 * @brief Gets the localized name of the application.
 *
 * @since_tizen @if MOBILE 2.3 @elseif WEARABLE 2.3.1 @endif
 * @remarks @a name must be released using free().
 *
 * @param[out] name The name of the application
 *
 * @return @c 0 on success,
 *         otherwise a negative error value
 *
 * @retval #APP_ERROR_NONE Successful
 * @retval #APP_ERROR_INVALID_PARAMETER Invalid parameter
 * @retval #APP_ERROR_INVALID_CONTEXT The application is illegally launched, not launched by the launch system
 * @retval #APP_ERROR_OUT_OF_MEMORY Out of memory
 */
int app_get_name(char **name);


/**
 * @brief Gets the version of the application package.
 *
 * @since_tizen @if MOBILE 2.3 @elseif WEARABLE 2.3.1 @endif
 * @remarks @a version must be released using free().
 *
 * @param[out] version The version of the application
 *
 * @return @c 0 on success,
 *         otherwise a negative error value
 *
 * @retval #APP_ERROR_NONE Successful
 * @retval #APP_ERROR_INVALID_PARAMETER Invalid parameter
 * @retval #APP_ERROR_INVALID_CONTEXT The application is illegally launched, not launched by the launch system
 * @retval #APP_ERROR_OUT_OF_MEMORY Out of memory
 */
int app_get_version(char **version);


/**
 * @brief	Gets the absolute path to the application's data directory which is used to store private
 *          data of the application.
 * @details	An application can read and write its own files in the application's data directory.
 * @since_tizen @if MOBILE 2.3 @elseif WEARABLE 2.3.1 @endif
 * @remarks	The returned path should be released.
 *
 * @return	The absolute path to the application's data directory, @n
 *	        otherwise a null pointer if the memory is insufficient
 */
char *app_get_data_path(void);


/**
 * @brief	Gets the absolute path to the application's cache directory which is used to store
 *          temporary data of the application.
 * @details	An application can read and write its own files in the application's cache directory.
 * @since_tizen @if MOBILE 2.3 @elseif WEARABLE 2.3.1 @endif
 * @remarks	The returned path should be released. @n
 *          The files stored in the application's cache directory can be removed by Setting
 *          application or platform while the application is running.
 *
 * @return	The absolute path to the application's cache directory, @n
 *          otherwise a null pointer if the memory is insufficient
 */
char *app_get_cache_path(void);


/**
 * @brief	Gets the absolute path to the application resource directory. The resource files
 *          are delivered with the application package.
 * @details	An application can only read its own files in the application's resource directory.
 * @since_tizen @if MOBILE 2.3 @elseif WEARABLE 2.3.1 @endif
 * @remarks	The returned path should be released.
 *
 * @return	The absolute path to the application's resource directory, @n
 *          otherwise a null pointer if the memory is insufficient
 */
char *app_get_resource_path(void);


/**
 * @brief	Gets the absolute path to the application's shared data directory which is used to share
 *          data with other applications.
 * @details	An application can read and write its own files in the application's shared data
 *          directory and others can only read the files.
 * @since_tizen @if MOBILE 2.3 @elseif WEARABLE 2.3.1 @endif
 * @remarks	The returned path should be released.
 *
 * @return	The absolute path to the application's shared data directory, @n
 *          otherwise a null pointer if the memory is insufficient
 */
char *app_get_shared_data_path(void);


/**
 * @brief	Gets the absolute path to the application's shared resource directory which is used to
 *          share resources with other applications.
 * @details	An application can read its own files in the application's shared resource directory
 *          and others can only read the files.
 * @since_tizen @if MOBILE 2.3 @elseif WEARABLE 2.3.1 @endif
 * @remarks	The returned path should be released.
 *
 * @return	The absolute path to the application's shared resource directory, @n
 *          otherwise a null pointer if the memory is insufficient
 */
char *app_get_shared_resource_path(void);


/**
 * @brief	Gets the absolute path to the application's shared trusted directory which is used to share data
 *          with a family of trusted applications.
 * @details	An application can read and write its own files in the application's shared trusted directory
 *          and the family applications signed with the same certificate can read and write the files in the
 *          shared trusted directory.
 * @since_tizen @if MOBILE 2.3 @elseif WEARABLE 2.3.1 @endif
 * @remarks	The returned path should be released.
 *
 * @return	The absolute path to the application's shared trusted directory, @n
 *          otherwise a null pointer if the memory is insufficient
 */
char *app_get_shared_trusted_path(void);


/**
 * @brief	Gets the absolute path to the application's external data directory which is used to
 *          store data of the application.
 * @details	An application can read and write its own files in the application's external data
 *          directory.
 * @since_tizen @if MOBILE 2.3 @elseif WEARABLE 2.3.1 @endif
 * @remarks	The returned path should be released. @n
 *          The important files stored in the application's external data directory should be
 *          encrypted because they can be exported via the external sdcard.
 * @remarks	To access the path returned by this function requires the privilege
 *              that is "http://tizen.org/privilege/externalstorage.appdata".
 *
 * @return	The absolute path to the application's external data directory, @n
 *			otherwise a null pointer if the memory is insufficient
 */
char *app_get_external_data_path(void);


/**
 * @brief	Gets the absolute path to the application's external cache directory which is used to
 *          store temporary data of the application.
 * @details	An application can read and write its own files in the application's external cache
 *          directory.
 * @since_tizen @if MOBILE 2.3 @elseif WEARABLE 2.3.1 @endif
 * @remarks	The returned path should be released. @n
 *          The files stored in the application's external cache directory can be removed by
 *          Setting application while the application is running. @n
 *          The important files stored in the application's external cache directory should be
 *          encrypted because they can be exported via the external sdcard.
 * @remarks	To access the path returned by this function requires the privilege
 *              that is "http://tizen.org/privilege/externalstorage.appdata".
 *
 * @return	The absolute path to the application's external cache directory, @n
 *          otherwise a null pointer if the memory is insufficient
 */
char *app_get_external_cache_path(void);


/**
 * @deprecated Deprecated since 2.4.
 * @brief	Gets the absolute path to the application's external shared data directory which is
 *          used to share data with other applications.
 * @details	An application can read and write its own files in the application's external shared
 *          data directory and others can only read the files.
 * @since_tizen @if MOBILE 2.3 @elseif WEARABLE 2.3.1 @endif
 * @remarks	The specified @a path should be released.
 * @remarks	To access the path returned by this function requires the privilege
 *              that is "http://tizen.org/privilege/externalstorage.appdata".
 * @remarks	The function may not work as intended in certain devices due to some implementation issues.
 *
 * @return	The absolute path to the application's external shared data directory, @n
 *          otherwise a null pointer if the memory is insufficient
 */
char *app_get_external_shared_data_path(void);

/**
 * @brief       Gets the absolute path to the application's TEP(Tizen Expansion Package) directory.
 *              The resource files are delivered with the expansion package.
 * @details     An application can only read its own files in the application's TEP(Tizen Expansion Package) directory.
 * @since_tizen 2.4
 * @remarks     The returned path should be released.
 *
 * @return      The absolute path to the application's TEP(Tizen Expansion Package) directory, @n
 *              otherwise a null pointer if the memory is insufficient
 **/
char *app_get_tep_resource_path(void);

/**
 * @}
 */

#ifdef __cplusplus
}
#endif

#endif /* __TIZEN_APPFW_APP_H__ */
