#ifndef PROTOCOL_H
#define PROTOCOL_H

#include <zephyr/kernel.h>
#include <stdint.h>

#define PROTOCOL_MAX_PATH_LEN 32U

typedef enum {
    PS_WAIT_SYNC = 0,
    PS_READ_HEADER,
    PS_READ_PAYLOAD,
    PS_READ_PAYLOAD_CRC,
} protocol_state_t;

typedef enum {
    CMD_INVALID = 0,
    CMD_GET_PROTOCOL_VERSION = 0x00,
    CMD_GET_FIRMWARE_STATUS = 0x01,
    CMD_GET_FLASH_STATUS = 0x02,
    CMD_CONFIRM_FIRMWARE = 0x03,
    CMD_REBOOT = 0x04,
    CMD_LIST_DIR = 0x10,
    CMD_CHECK_FILE_CRC = 0x11,
    CMD_MKDIR = 0x12,
    CMD_RM = 0x13,
    CMD_PUT_FILE_START = 0x14,
    CMD_PUT_FILE_CHUNK = 0x15,
    CMD_PUT_FILE_END = 0x16,
    CMD_PUT_FW_START = 0x17,
    CMD_STAT = 0x18,
    CMD_RENAME = 0x19,
    CMD_RM_R = 0x1A,
    CMD_GET_FILE = 0x1B,
    CMD_GET_TAG_BLOB = 0x20,
    CMD_SET_TAG_BLOB_START = 0x21,
    CMD_SET_TAG_BLOB_CHUNK = 0x22,
    CMD_SET_TAG_BLOB_END = 0x23,
} protocol_cmd_t;

typedef enum {
    FRAME_REQ = 0x01,
    FRAME_RESP_ACK = 0x10,
    FRAME_RESP_DATA = 0x11,
    FRAME_RESP_STREAM_START = 0x12,
    FRAME_RESP_STREAM_CHUNK = 0x13,
    FRAME_RESP_STREAM_END = 0x14,
    FRAME_RESP_ERROR = 0x7F,
} protocol_frame_type_t;

typedef enum {
    P_ERR_NONE = 0x00,
    P_ERR_INVALID_COMMAND = 0x01,
    P_ERR_INVALID_PARAMETERS = 0x02,
    P_ERR_COMMAND_TOO_LONG = 0x03,

    P_ERR_FILE_NOT_FOUND = 0x10,
    P_ERR_ALREADY_EXISTS = 0x11,
    P_ERR_NOT_A_DIRECTORY = 0x12,
    P_ERR_IS_A_DIRECTORY = 0x13,
    P_ERR_ACCESS_DENIED = 0x14,
    P_ERR_NO_SPACE = 0x15,
    P_ERR_FILE_TOO_LARGE = 0x16,

    P_ERR_IO = 0x20,
    P_ERR_TIMEOUT = 0x21,
    P_ERR_CRC_MISMATCH = 0x22,
    P_ERR_TRANSFER_ABORTED = 0x23,

    P_ERR_NOT_SUPPORTED = 0x30,
    P_ERR_BUSY = 0x31,
    P_ERR_INTERNAL = 0x32,
} protocol_error_t;

void protocol_thread_entry(void *p1, void *p2, void *p3);

#endif // PROTOCOL_H