#ifndef TASK01_DELAY_STATE_H
#define TASK01_DELAY_STATE_H

#include <stdint.h>

#include "FreeRTOS.h"
#include "task.h"

#define FC04_PERIOD_TICKS          2U
#define FC04_RELEASE_COUNT         3U
#define FC04_TASK_STACK_WORDS      192U
#define FC04_PERIODIC_PRIORITY     3U
#define FC04_SUSPEND_PRIORITY      2U
#define FC04_OBSERVER_PRIORITY     1U
#define FC04_TIMEOUT_TICKS         20U

typedef enum
{
    FC04_PHASE_PREPARED = 0,
    FC04_PHASE_READY,
    FC04_PHASE_BLOCKED,
    FC04_PHASE_SUSPENDED,
    FC04_PHASE_RUNNING,
    FC04_PHASE_COMPLETED
} Fc04Phase;

typedef struct
{
    TaskHandle_t handle;
    uintptr_t created_handle;
    volatile Fc04Phase phase;
    TickType_t initial_tick;
    TickType_t release_tick[ FC04_RELEASE_COUNT ];
    volatile uint32_t release_count;
    uintptr_t entry_sp;
    uintptr_t stack_low;
    uintptr_t stack_high;
} PeriodicContext;

typedef struct
{
    TaskHandle_t handle;
    uintptr_t created_handle;
    volatile Fc04Phase phase;
    volatile uint32_t resumed;
    uintptr_t entry_sp;
} SuspendContext;

typedef struct
{
    TaskHandle_t handle;
    volatile Fc04Phase phase;
    volatile eTaskState periodic_state;
    volatile eTaskState suspend_state;
    volatile uint32_t pass;
} ObserverContext;

void periodic_task_entry( void * context );
void suspend_task_entry( void * context );
void observer_task_entry( void * context );
void fc04_checkpoint( uint32_t point, const void * subject );
void fc04_checkpoint_committed( uint32_t point, const void * subject );

#endif