#ifndef __GE_INPUT_H__
#define __GE_INPUT_H__

#include <stdint.h>

struct ge_input;
typedef struct ge_input ge_input_t;
typedef union ge_input_event {
    void*       ctx;
    uintptr_t   num;
} ge_input_event_t;

typedef int(*ge_input_send_func_t)(ge_input_t* ctx, ge_input_event_t event);
typedef int(*ge_input_peek_func_t)(ge_input_t* ctx, ge_input_event_t* event);
typedef int(*ge_input_recv_func_t)(ge_input_t* ctx, ge_input_event_t* event);

struct ge_input {
    void* context;
    ge_input_send_func_t    func_send;
    ge_input_peek_func_t    func_peek;
    ge_input_recv_func_t    func_recv;
};

#ifdef __GE_INPUT_EASY_IMPLIMENT_H__

DECLARE_GE_KFIFO(ge_input_fifo, ge_input_event_t, 16, ge_input_fifo_t);

static int ge_input_send (ge_input_t* ctx, ge_input_event_t event) {
    struct ge_input_fifo_t* fifo = (struct ge_input_fifo_t*)ctx->context;
    if (ge_kfifo_is_full(fifo)) {
        return -1;
    }
    ge_kfifo_put(fifo, event);
    return 0;
}

static int ge_input_peek (ge_input_t* ctx, ge_input_event_t* event) {
    struct ge_input_fifo_t* fifo = (struct ge_input_fifo_t*)ctx->context;
    if (ge_kfifo_is_empty(fifo)) {
        return -1;
    }
    ge_kfifo_peek(fifo, event);
    return 0;
}

static int ge_input_recv (ge_input_t* ctx, ge_input_event_t* event) {
    struct ge_input_fifo_t* fifo = (struct ge_input_fifo_t*)ctx->context;
    if (ge_kfifo_is_empty(fifo)) {
        return -1;
    }
    ge_kfifo_get(fifo, event);
    return 0;
}

#endif

#endif // __GE_INPUT_H__