/* See COPYING.txt for the full license governing this code. */

/**

 * \file SDL_visualtest_action_configparser.h

 *

 * Header file for the parser for action config files.

 */

#ifndef _SDL_visualtest_action_configparser_h

#define _SDL_visualtest_action_configparser_h

/** The maximum length of one line in the actions file */

#define MAX_ACTION_LINE_LENGTH 300

/* Set up for C function definitions, even when using C++ */

#ifdef __cplusplus

extern "C" {

#endif

/**

 * Type of the action.

 */

typedef enum

{

    /*! Launch an application with some given arguments */

    SDL_ACTION_LAUNCH = 0,

    /*! Kill the SUT process */

    SDL_ACTION_KILL,

    /*! Quit (Gracefully exit) the SUT process */

    SDL_ACTION_QUIT,

    /*! Take a screenshot of the SUT window */

    SDL_ACTION_SCREENSHOT,

    /*! Verify a previously taken screenshot */

    SDL_ACTION_VERIFY

} SDLVisualTest_ActionType;

/**

 * Struct that defines an action that will be performed on the SUT process at

 * a specific time.

 */

typedef struct SDLVisualTest_Action

{

    /*! The type of action to be performed */

    SDLVisualTest_ActionType type;

    /*! The time, in milliseconds from the launch of the SUT, when the action

        will be performed */

    int time;

    /*! Any additional information needed to perform the action. */

    union

    {

        /*! The path and arguments to the process to be launched */

        struct

        {

            char* path;

            char* args;

        } process;

    } extra;

} SDLVisualTest_Action;

/**

 * Struct for a node in the action queue. 

 */

typedef struct SDLVisualTest_ActionNode

{

    /*! The action in this node */

    SDLVisualTest_Action action;

    /*! Pointer to the next element in the queue */

    struct SDLVisualTest_ActionNode* next;

} SDLVisualTest_ActionNode;

/**

 * Queue structure for actions loaded from the actions config file. 

 */

typedef struct SDLVisualTest_ActionQueue

{

    /*! Pointer to the front of the queue */

    SDLVisualTest_ActionNode* front;

    /*! Pointer to the rear of the queue */

    SDLVisualTest_ActionNode* rear;

    /*! Number of nodes in the queue */

    int size;

} SDLVisualTest_ActionQueue;

/**

 * Add an action pointed to by \c action to the rear of the action queue pointed

 * to by \c queue.

 *

 * \return 1 on success, 0 on failure.

 */

int SDLVisualTest_EnqueueAction(SDLVisualTest_ActionQueue* queue,

                                SDLVisualTest_Action action);

/**

 * Remove an action from the front of the action queue pointed to by \c queue.

 *

 * \return 1 on success, 0 on failure.

 */

int SDLVisualTest_DequeueAction(SDLVisualTest_ActionQueue* queue);

/**

 * Initialize the action queue pointed to by \c queue.

 */

void SDLVisualTest_InitActionQueue(SDLVisualTest_ActionQueue* queue);

/**

 * Get the action at the front of the action queue pointed to by \c queue.

 * The returned action pointer may become invalid after subsequent dequeues.

 *

 * \return pointer to the action on success, NULL on failure.

 */

SDLVisualTest_Action* SDLVisualTest_GetQueueFront(SDLVisualTest_ActionQueue* queue);

/**

 * Check if the queue pointed to by \c queue is empty or not.

 *

 * \return 1 if the queue is empty, 0 otherwise.

 */

int SDLVisualTest_IsActionQueueEmpty(SDLVisualTest_ActionQueue* queue);

/**

 * Dequeues all the elements in the queque pointed to by \c queue.

 */

void SDLVisualTest_EmptyActionQueue(SDLVisualTest_ActionQueue* queue);

/**

 * Inserts an action \c action into the queue pointed to by \c queue such that

 * the times of actions in the queue increase as we move from the front to the

 * rear.

 *

 * \return 1 on success, 0 on failure.

 */

int SDLVisualTest_InsertIntoActionQueue(SDLVisualTest_ActionQueue* queue,

                                        SDLVisualTest_Action action);

/**

 * Parses an action config file with path \c file and populates an action queue

 * pointed to by \c queue with actions.

 *

 * \return 1 on success, 0 on failure.

 */

int SDLVisualTest_ParseActionConfig(char* file, SDLVisualTest_ActionQueue* queue);

/* Ends C function definitions when using C++ */

#ifdef __cplusplus

}

#endif

#endif /* _SDL_visualtest_action_configparser_h */