#ifndef LINUXCNC_WEB_WASM_SIM_PROTOCOL_H
#define LINUXCNC_WEB_WASM_SIM_PROTOCOL_H

#include <stdint.h>

#ifdef __cplusplus
extern "C" {
#endif

enum sim_protocol_result {
    SIM_PROTOCOL_OK = 0,
    SIM_PROTOCOL_ERR_SCHEMA = -100,
    SIM_PROTOCOL_ERR_SEQUENCE = -101,
    SIM_PROTOCOL_ERR_STATE = -102,
    SIM_PROTOCOL_ERR_OPERATION_ID = -103,
    SIM_PROTOCOL_ERR_KIND = -104,
    SIM_PROTOCOL_ERR_ARGUMENT = -105,
    SIM_PROTOCOL_ERR_TICK = -106,
};

enum sim_protocol_state {
    SIM_PROTOCOL_NEW = 0,
    SIM_PROTOCOL_HELLO = 1,
    SIM_PROTOCOL_ATTACHED = 2,
    SIM_PROTOCOL_READY = 3,
    SIM_PROTOCOL_PAUSED = 4,
    SIM_PROTOCOL_DESTROYED = 5,
};

/* The protocol validator is deliberately independent of JSON and malloc. */
void sim_protocol_reset(void);
int32_t sim_protocol_accept(uint32_t schema_version, uint32_t seq,
                            const char *kind, const char *operation_id,
                            uint32_t simulation_tick);
int32_t sim_protocol_pause(void);
int32_t sim_protocol_resume(void);
int32_t sim_protocol_state_value(void);
uint32_t sim_protocol_last_seq(void);
uint32_t sim_protocol_tick(void);
uint32_t sim_protocol_checkpoint_size(void);
int32_t sim_protocol_checkpoint_export(uint8_t *output, uint32_t capacity);
int32_t sim_protocol_checkpoint_restore(const uint8_t *input, uint32_t length);
int32_t sim_protocol_set_tick(uint32_t simulation_tick);

#ifdef __cplusplus
}
#endif

#endif