# tool/core/protocol.py
VERSION = {
    "min_protocol_version": 1,
    "max_protocol_version": 1,
    "current_protocol_version": None
}

SYNC_SEQ = b'BUZZ'

ERRORS = {
    0x00: "NONE",
    0x01: "INVALID_COMMAND",
    0x02: "INVALID_PARAMETERS",
    0x03: "MISSING_PARAMETERS",

    0x10: "FILE_NOT_FOUND",
    0x11: "ALREADY_EXISTS",
    0x12: "NOT_A_DIRECTORY",
    0x13: "IS_A_DIRECTORY",
    0x14: "ACCESS_DENIED",
    0x15: "NO_SPACE",
    0x16: "FILE_TOO_LARGE",

    0x20: "IO_ERROR",
    0x21: "TIMEOUT",
    0x22: "CRC_MISMATCH",
    0x23: "TRANSFER_ABORTED",

    0x30: "NOT_SUPPORTED",
    0x31: "BUSY",
    0x32: "INTERNAL_ERROR",

    0x40: "NOT_IMPLEMENTED",
}

FRAME_TYPE_REQUEST = 0x01
FRAME_TYPE_ACK = 0x10
FRAME_TYPE_RESPONSE = 0x11
FRAME_TYPE_STREAM_START = 0x12
FRAME_TYPE_STREAM_CHUNK = 0x13
FRAME_TYPE_STREAM_END = 0x14
FRAME_TYPE_LIST_START = 0x15
FRAME_TYPE_LIST_CHUNK = 0x16
FRAME_TYPE_LIST_END = 0x17
FRAME_TYPE_ERROR = 0xFF

FRAME_TYPES = {
    'request': FRAME_TYPE_REQUEST,
    'ack': FRAME_TYPE_ACK,
    'response': FRAME_TYPE_RESPONSE,
    'error': FRAME_TYPE_ERROR,
    'stream_start': FRAME_TYPE_STREAM_START,
    'stream_chunk': FRAME_TYPE_STREAM_CHUNK,
    'stream_end': FRAME_TYPE_STREAM_END,
    'list_start': FRAME_TYPE_LIST_START,
    'list_chunk': FRAME_TYPE_LIST_CHUNK,
    'list_end': FRAME_TYPE_LIST_END
}

CMD_GET_PROTOCOL_VERSION = 0x00
CMD_GET_FIRMWARE_STATUS = 0x01
CMD_GET_FLASH_INFO = 0x02

CMD_LIST_DIR = 0x10
CMD_CRC_32 = 0x11
CMD_MKDIR = 0x12
CMD_RM = 0x13
CMD_STAT = 0x18
CMD_RENAME = 0x19

CMD_PUT_FILE = 0x20
CMD_PUT_FW = 0x21
CMD_GET_FILE = 0x22

COMMANDS = {
    'get_protocol_version': CMD_GET_PROTOCOL_VERSION,
    'get_firmware_status': CMD_GET_FIRMWARE_STATUS,
    'get_flash_info': CMD_GET_FLASH_INFO,
    'list_dir': CMD_LIST_DIR,
    'stat': CMD_STAT,
    'rm': CMD_RM,
    'rename': CMD_RENAME,
    'mkdir': CMD_MKDIR,
    'crc_32': CMD_CRC_32,
    'put_file': CMD_PUT_FILE,
    'get_file': CMD_GET_FILE,
    'put_fw': CMD_PUT_FW,
}