#ifndef LINUXCNC_WEB_WASM_SIM_PROGRAM_H
#define LINUXCNC_WEB_WASM_SIM_PROGRAM_H

#include "sim_interpreter.h"

#ifdef __cplusplus
extern "C" {
#endif

#define SIM_PROGRAM_SOURCE_CAPACITY 131072u
#define SIM_PROGRAM_LINE_CAPACITY 4096u
#define SIM_PROGRAM_CANONICAL_CAPACITY 4096u
#define SIM_PROGRAM_SUBROUTINE_CAPACITY 16u
#define SIM_PROGRAM_SUBROUTINE_NAME_CAPACITY 48u
#define SIM_PROGRAM_CALL_DEPTH 8u
#define SIM_PROGRAM_CALL_PARAMETER_CAPACITY 30u

enum sim_program_result {
    SIM_PROGRAM_OK = 0,
    SIM_PROGRAM_ERR_ARGUMENT = -1100,
    SIM_PROGRAM_ERR_RANGE = -1101,
    SIM_PROGRAM_ERR_STATE = -1102,
    SIM_PROGRAM_ERR_CONTROL = -1103,
    SIM_PROGRAM_ERR_BUFFER = -1104,
    SIM_PROGRAM_ERR_INTERPRETER = -1105,
};

enum sim_program_status {
    SIM_PROGRAM_IDLE = 0,
    SIM_PROGRAM_LOADED = 1,
    SIM_PROGRAM_RUNNING = 2,
    SIM_PROGRAM_PAUSED = 3,
    SIM_PROGRAM_COMPLETED = 4,
    SIM_PROGRAM_ABORTED = 5,
    SIM_PROGRAM_ERROR = 6,
};

typedef struct sim_program_subroutine {
    char name[SIM_PROGRAM_SUBROUTINE_NAME_CAPACITY];
    uint32_t body_line;
    uint32_t end_line;
} sim_program_subroutine;

typedef struct sim_program_call_frame {
    uint32_t return_line;
    double parameters[SIM_PROGRAM_CALL_PARAMETER_CAPACITY];
} sim_program_call_frame;

typedef struct sim_program {
    sim_interpreter interpreter;
    char source[SIM_PROGRAM_SOURCE_CAPACITY];
    uint32_t line_offsets[SIM_PROGRAM_LINE_CAPACITY + 1u];
    uint32_t source_length;
    uint32_t line_count;
    uint32_t main_line_count;
    uint32_t current_line;
    uint32_t status;
    int32_t last_error;
    uint32_t error_line;
    sim_posemath_segment motion;
    uint32_t has_motion;
    sim_program_subroutine subroutines[SIM_PROGRAM_SUBROUTINE_CAPACITY];
    uint32_t subroutine_count;
    sim_program_call_frame call_stack[SIM_PROGRAM_CALL_DEPTH];
    uint32_t call_depth;
    uint32_t has_control;
    int32_t control_code;
    double rapid_velocity;
} sim_program;

uint32_t sim_program_size(void);
int32_t sim_program_requires_subroutines(const char *source, uint32_t length);
int32_t sim_program_init(sim_program *program);
int32_t sim_program_reset(sim_program *program);
int32_t sim_program_load(sim_program *program, const char *source, uint32_t length);
int32_t sim_program_add_subroutine(sim_program *program, const char *source, uint32_t length);
int32_t sim_program_set_rapid_velocity(sim_program *program, double velocity);
int32_t sim_program_start(sim_program *program);
int32_t sim_program_pause(sim_program *program);
int32_t sim_program_resume(sim_program *program);
int32_t sim_program_abort(sim_program *program);
int32_t sim_program_step(sim_program *program);
int32_t sim_program_execute_block(sim_program *program, const char *block, uint32_t length);
int32_t sim_program_seek(sim_program *program, uint32_t line);
int32_t sim_program_read_motion(const sim_program *program, sim_posemath_segment *segment);
int32_t sim_program_clear_motion(sim_program *program);
uint32_t sim_program_canonical(const sim_program *program, char *output, uint32_t capacity);
uint64_t sim_program_state_hash(const sim_program *program);

#ifdef __cplusplus
}
#endif

#endif