#Most of the data formats, structures, and magic values

MC_PROTOCOL_VERSION = 4

SERVER_TO_CLIENT    = 0x01
CLIENT_TO_SERVER    = 0x02

HANDSHAKE_STATE     = 0x00
STATUS_STATE        = 0x01
LOGIN_STATE         = 0x02
PLAY_STATE          = 0x03

data_types = {
    'bool'  : ('?', 1),
    'ubyte' : ('B', 1),
    'byte'  : ('b', 1),
    'ushort': ('H', 2),
    'short' : ('h', 2),
    'uint'  : ('I', 4),
    'int'   : ('i', 4),
    'long'  : ('q', 8),
    'float' : ('f', 4),
    'double': ('d', 8),
}


names = {
    HANDSHAKE_STATE: {
        CLIENT_TO_SERVER: {
            0x00: 'Handshake',
        }

    STATUS_STATE: {
        SERVER_TO_CLIENT: {
            0x00: 'Status Response',
            0x01: 'Status Ping',
        },
        CLIENT_TO_SERVER: {
            0x00: 'Status Request',
            0x01: 'Status Ping',
        },
    },

    LOGIN_STATE: {
        SERVER_TO_CLIENT: {
            0x00: 'Disconnect',
            0x01: 'Encryption Request',
            0x02: 'Login Request',
        },
        CLIENT_TO_SERVER: {
            0x00: 'Login Start',
            0x01: 'Encryption Response',
        },
    },

    PLAY_STATE: {
        SERVER_TO_CLIENT: {
            0x00: 'Keep Alive',
            0x01: 'Join Game',
            0x02: 'Chat Message',
            0x03: 'Time Update',
            0x04: 'Entity Equipment',
            0x05: 'Spawn Position',
            0x06: 'Update Health',
            0x07: 'Respawn',
            0x08: 'Player Position and Look',
            0x09: 'Held Item Change',
            0x0A: 'Use Bed',
            0x0B: 'Animation',
            0x0C: 'Spawn Player',
            0x0D: 'Collect Item',
            0x0E: 'Spawn Object',
            0x0F: 'Spawn Mob',
            0x10: 'Spawn Painting',
            0x11: 'Spawn Experience Orb',
            0x12: 'Entity Velocity',
            0x13: 'Destroy Entities',
            0x14: 'Entity',
            0x15: 'Entity Relative Move',
            0x16: 'Entity Look',
            0x17: 'Entity Look and Relative Move',
            0x18: 'Entity Teleport',
            0x19: 'Entity Head Look',
            0x1A: 'Entity Status',
            0x1B: 'Attach Entity',
            0x1D: 'Entity Metadata',
            0x1E: 'Remove Entity Effect',
            0x1F: 'Set Experience',
            0x20: 'Entity Properties',
            0x21: 'Chunk Data',
            0x22: 'Multi Block Change',
            0x23: 'Block Change',
            0x24: 'Block Action',
            0x25: 'Block Break Animation',
            0x26: 'Map Chunk Bulk',
            0x27: 'Explosion',
            0x28: 'Effect',
            0x29: 'Sound Effect',
            0x2A: 'Particle',
            0x2B: 'Change Game State',
            0x2C: 'Spawn Global Entity',
            0x2D: 'Open Window',
            0x2E: 'Close Window',
            0x2F: 'Set Slot',
            0x30: 'Window Items',
            0x31: 'Window Property',
            0x32: 'Confirm Transaction',
            0x33: 'Update Sign',
            0x34: 'Maps',
            0x35: 'Update Block Entity',
            0x36: 'Sign Editor Open',
            0x37: 'Statistics',
            0x38: 'Player List Item',
            0x39: 'Player Abilities',
            0x3A: 'Tab-Complete',
            0x3B: 'Scoreboard Objective',
            0x3C: 'Update Score',
            0x3D: 'Display Scoreboard',
            0x3E: 'Teams',
            0x3F: 'Plugin Message',
            0x40: 'Disconnect',
        },

        CLIENT_TO_SERVER: {
            0x00: 'Keep Alive',
            0x01: 'Chat Message',
            0x02: 'Use Entity',
            0x03: 'Player',
            0x04: 'Player Position',
            0x05: 'Player Look',
            0x06: 'Player Position and Look',
            0x07: 'Player Digging',
            0x08: 'Player Block Placement',
            0x09: 'Held Item Change',
            0x0A: 'Animation',
            0x0B: 'Entity Action',
            0x0C: 'Steer Vehicle',
            0x0D: 'Close Window',
            0x0E: 'Click Window',
            0x0F: 'Confirm Transaction',
            0x10: 'Creative Inventory Action',
            0x11: 'Enchant Item',
            0x12: 'Update Sign',
            0x13: 'Player Abilities',
            0x14: 'Tab-Complete',
            0x15: 'Client Settings',
            0x16: 'Client Status',
            0x17: 'Plugin Message',
        },
    },
}

packet_structs = {
    HANDSHAKE_STATE: {
        CLIENT_TO_SERVER: {
            #Handshake
            0x00: (
                ('varint', 'protocol_version'),
                ('string', 'host'),
                ('ushort', 'port'),
                ('varint', 'next_state'),
            ),
        },
    },

    STATUS_STATE: {
        SERVER_TO_CLIENT: {
            #Status Response
            0x00: (
                ('string', 'json_response'),
            ),
            #Status Ping
            0x01: (
                ('long', 'time'),
            ),
        },
        CLIENT_TO_SERVER: {
            #Status Request
            #Empty Packet
            0x00: (),
            #Status Ping
            0x01: (
                ('long', 'time'),
            ),
        },
    },

    LOGIN_STATE: {
        SERVER_TO_CLIENT: {
            #Disconnect
            0x00: (
                ('string', 'json_data'),
            ),
            #Encryption Request
            0x01: (
                ('string', 'server_id'),
            ),
            #Login Success
            0x02: (
                ('string', 'uuid'),
                ('string', 'username'),
            ),
        },
        CLIENT_TO_SERVER: {
            #Login Start
            0x00: (
                ('string', 'name'),
            ),
            #Encryption Response
            #Covered entirely in extensions
            0x01: (),
        },
    },

    PLAY_STATE: {
        SERVER_TO_CLIENT: {
            #Keep Alive
            0x00: (
                ('int', 'keep_alive'),
            ),
            #Join Game
            0x01: (
                ('int'   , 'eid'),
                ('ubyte' , 'gamemode'),
                ('byte'  , 'dimension'),
                ('ubyte' , 'difficulty'),
                ('ubyte' , 'max_players'),
                ('string', 'level_type'),
            ),
            #Chat Message
            0x02: (
                ('string', 'json_data'),
            ),
            #Time Update
            0x03: (
                ('long', 'world_age'),
                ('long', 'time_of_day'),
            ),
            #Entity Equipment
            0x04: (
                ('int'  , 'eid'),
                ('short', 'slot'),
                ('slot' , 'item'),
            ),
            #Spawn Position
            0x05: (
                ('int', 'x'),
                ('int', 'y'),
                ('int', 'z'),
            ),
            #Update Health
            0x06: (
                ('float', 'health'),
                ('short', 'food'),
                ('float', 'saturation'),
            ),
            #Respawn
            0x07: (
                ('int'   , 'dimension'),
                ('ubyte' , 'difficulty'),
                ('ubyte' , 'gamemode'),
                ('string', 'level_type'),
            ),
            #Player Position and Look
            0x08: (
                ('double', 'x'),
                ('double', 'y'),
                ('double', 'z'),
                ('float' , 'yaw'),
                ('pitch' , 'float'),
                ('bool'  , 'on_ground'),
            ),
            #Held Item Change
            0x09: (
                ('byte', 'slot'),
            ),
            #Use Bed
            0x0A: (
                ('int'  , 'eid'),
                ('int'  , 'x'),
                ('ubyte', 'y'),
                ('int'  , 'z')
            ),
            #Animation
            0x0B: (
                ('varint', 'eid'),
                ('ubyte' , 'animation'),
            ),
            #Spawn Player
            0x0C: (
                ('varint', 'eid'),
                ('string', 'player_uuid'),
                ('string', 'player_name'),
                ('int'   , 'x'),
                ('int'   , 'y'),
                ('int'   , 'z'),
                ('byte'  , 'yaw'),
                ('byte'  , 'pitch'),
                ('short' , 'current_item'),
                ('metadata', 'metadata'),
            ),
            #Collect Item
            0x0D: (
                ('int', 'collected_eid'),
                ('int', 'collector_eid'),
            ),
            #Spawn Object
            0x0E: (
                ('varint', 'eid'),
                ('ubyte' , 'type'),
                ('int'   , 'x'),
                ('int'   , 'y'),
                ('int'   , 'z'),
                ('byte'  , 'pitch'),
                ('byte'  , 'yaw'),
                ('object_data', 'data'),
            ),
            #Spawn Mob
            0x0F: (
                ('varint', 'eid'),
                ('ubyte' , 'type'),
                ('int'   , 'x'),
                ('int'   , 'y'),
                ('int'   , 'z'),
                ('byte'  , 'pitch'),
                ('byte'  , 'head_pitch'),
                ('byte'  , 'yaw'),
                ('short' , 'velocity_x'),
                ('short' , 'velocity_y'),
                ('short' , 'velocity_z'),
                ('metadata', 'metadata'),
            ),
            #Spawn Painting
            0x10: (
                ('varint', 'eid'),
                ('string', 'title'),
                ('int'   , 'x'),
                ('int'   , 'y'),
                ('int'   , 'z'),
                ('int'   , 'direction'),
            ),
            #Spawn Experience Orb
            0x11: (
                ('varint', 'eid'),
                ('ubyte' , 'type'),
                ('int'   , 'x'),
                ('int'   , 'y'),
                ('int'   , 'z'),
                ('short' , 'count'),
            ),
            #Entity Velocity
            0x12: (
                ('int'  , 'eid'),
                ('short', 'velocity_x'),
                ('short', 'velocity_y'),
                ('short', 'velocity_z'),
            ),
            #Destroy Entities
            0x13: (
                ('byte', 'count'),
            ),
            #Entity
            0x14: (
                ('int', 'eid'),
            ),
            #Entity Relative Move
            0x15: (
                ('int' , 'eid'),
                ('byte', 'dx'),
                ('byte', 'dy'),
                ('byte', 'dz'),
            ),
            #Entity Look
            0x16: (
                ('int' , 'eid'),
                ('byte', 'yaw'),
                ('byte', 'pitch'),
            ),
            #Entity Look and Relative Move
            0x17: (
                ('int' , 'eid'),
                ('byte', 'dx'),
                ('byte', 'dy'),
                ('byte', 'dz'),
                ('byte', 'yaw'),
                ('byte', 'pitch'),
            ),
            #Entity Teleport
            0x18: (
                ('int' , 'eid'),
                ('int' , 'x'),
                ('int' , 'y'),
                ('int' , 'z'),
                ('byte', 'yaw'),
                ('byte', 'pitch'),
            ),
            #Entity Head Look
            0x19: (
                ('int' , 'eid'),
                ('byte', 'head_yaw'),
            ),
            #Entity Status
            0x1A: (
                ('int' , 'eid'),
                ('byte', 'status')
            ),
            #Attach Entity
            0x1B: (
                ('int' , 'eid'),
                ('int' , 'v_eid'),
                ('bool', 'leash'),
            ),
            #Entity Metadata
            0x1D: (
                ('int'  , 'eid'),
                ('byte' , 'effect'),
                ('byte' , 'amplifier'),
                ('short', 'duration'),
            ),
            #Remove Entity Effect
            0x1E: (
                ('int' , 'eid'),
                ('byte', 'effect'),
            ),
            #Set Experience
            0x1F: (
                ('float', 'exp_bar'),
                ('short', 'level'),
                ('short', 'total_exp'),
            ),
            #Entity Properties
            0x20: (
                ('int', 'eid'),
                ('int', 'count'),
            ),
            #Chunk Data
            0x21: (
                ('int'   , 'chunk_x'),
                ('int'   , 'chunk_z'),
                ('bool'  , 'continuous'),
                ('ushort', 'primary_bitmap'),
                ('ushort', 'add_bitmap'),
                ('int'   , 'size'),
            ),
            #Multi Block Change
            0x22: (
                ('int'  , 'chunk_x'),
                ('int'  , 'chunk_z'),
                ('short', 'count'),
                ('int'  , 'size'),
            ),
            #Block Change
            0x23: (
                ('int'   , 'x'),
                ('ubyte' , 'y'),
                ('int'   , 'z'),
                ('varint', 'block_type'),
                ('ubyte' , 'data'),
            ),
            #Block Action
            0x24: (
                ('int'   , 'x'),
                ('short' , 'y'),
                ('int'   , 'z'),
                ('ubyte' , 'byte_1'),
                ('ubyte' , 'byte_2'),
                ('varint', 'block_type'),
            ),
            #Block Break Animation
            0x25: (
                ('varint', 'eid'),
                ('int'   , 'x'),
                ('int'   , 'y'),
                ('int'   , 'z'),
                ('byte'  , 'stage'),
            ),
            #Map Chunk Bulk
            0x26: (
                ('short', 'count'),
                ('int'  , 'size'),
                ('bool' , 'sky_light'),
            ),
            #Explosion
            0x27: (
                ('float', 'x'),
                ('float', 'y'),
                ('float', 'z'),
                ('float', 'radius'),
                ('int'  , 'count'),
            ),
            #Effect
            0x28: (
                ('int' , 'effect'),
                ('int' , 'x'),
                ('byte', 'y'),
                ('int' , 'z'),
                ('int' , 'data'),
                ('bool', 'no_rel_vol'),
            ),
            #Sound Effect
            0x29: (
                ('string', 'name'),
                ('int'   , 'ef_x'),
                ('int'   , 'ef_y'),
                ('int'   , 'ef_z'),
                ('float' , 'vol'),
                ('ubyte' , 'pitch'),
            ),
            #Particle
            0x2A: (
                ('string', 'name'),
                ('float' , 'x'),
                ('float' , 'y'),
                ('float' , 'z'),
                ('float' , 'off_x'),
                ('float' , 'off_y'),
                ('float' , 'off_z'),
                ('float' , 'speed'),
                ('float' , 'num'),
            ),
            #Change Game State
            0x2B: (
                ('ubyte', 'reason'),
                ('float', 'value'),
            ),
            #Spawn Global Entity
            0x2C: (
                ('varint', 'eid'),
                ('byte', 'type'),
                ('int' , 'x'),
                ('int' , 'y'),
                ('int' , 'z'),
            ),
            #Open Window
            0x2D: (
                ('ubyte' , 'window_id'),
                ('ubyte' , 'inv_type'),
                ('string', 'title'),
                ('ubyte' , 'slot_count'),
                ('bool'  , 'use_title'),
                ('int'   , 'eid'),
            ),
            #Close Window
            0x2E: (
                ('ubyte', 'window_id'),
            ),
            #Set Slot
            0x2F: (
                ('ubyte', 'window_id'),
                ('short', 'slot'),
                ('slot' , 'slot_data'),
            ),
            #Window Items
            0x30: (
                ('ubyte', 'window_id'),
                ('short', 'count'),
            ),
            #Window Property
            0x31: (
                ('ubyte', 'window_id'),
                ('short', 'property'),
                ('short', 'value'),
            ),
            #Confirm Transaction
            0x32: (
                ('ubyte', 'window_id'),
                ('short', 'action'),
                ('bool' , 'accepted'),
            ),
            #Update Sign
            0x33: (
                ('int'   , 'x'),
                ('short' , 'y'),
                ('int'   , 'z'),
                ('string', 'line_1'),
                ('string', 'line_2'),
                ('string', 'line_3'),
                ('string', 'line_4'),
            ),
            #Maps
            0x34: (
                ('varint', 'item_damage'),
                ('short' , 'size'),
            ),
            #Update Block Entity
            0x35: (
                ('int'   , 'x'),
                ('short' , 'y'),
                ('int'   , 'z'),
                ('ubyte' , 'action'),
                ('short' , 'size'),
            ),
            #Sign Editor Open
            0x36: (
                ('int'   , 'x'),
                ('int'   , 'y'),
                ('int'   , 'z'),
            ),
            #Statistics
            0x37: (
                ('varint', 'count'),
            ),
            #Player List Item
            0x38: (
                ('string', 'player_name'),
                ('bool'  , 'online'),
                ('short' , 'ping'),

            ),
            #Player Abilities
            0x39: (
                ('byte', 'flags'),
                ('float', 'flying_speed'),
                ('float', 'walking_speed'),
            ),
            #Tab-Complete
            0x3A: (
                ('varint', 'count')
            ),
            #Scoreboard Objective
            0x3B: (
                ('string', 'obj_name'),
                ('string', 'obj_val'),
                ('byte'  , 'action'),
            ),
            #Update Score
            0x3C: (
                ('string', 'item_name'),
                ('byte'  , 'action'),
                ('string', 'score_name'),
                ('int'   , 'value'),
            ),
            #Display Scoreboard
            0x3D: (
                ('byte'  , 'position'),
                ('string', 'score_name'),
            ),
            #Teams
            0x3E: (
                ('string', 'team_name'),
                ('byte'  , 'mode'),
                ('string', 'display_name'),
                ('string', 'prefix'),
                ('string', 'suffix'),
                ('byte'  , 'friendly_fire'),
                ('short' , 'count'),
            ),
            #Plugin Message
            0x3F: (
                ('string', 'channel'),
                ('short' , 'size'),
            ),
            #Disconnect
            0x40: (
                ('string', 'reason'),
            ),
        },

        CLIENT_TO_SERVER: {
            #Keep Alive
            0x00: (
                ('int', 'keep_alive'),
            ),
            #Chat Message
            0x01: (
                ('string', 'message'),
            ),
            #Use Entity
            0x02: (
                ('int' , 'target'),
                ('byte', 'mouse'),
            ),
            #Player
            0x03: (
                ('bool', 'on_ground'),
            ),
            #Player Position
            0x04: (
                ('double', 'x'),
                ('double', 'y'),
                ('double', 'stance'),
                ('double', 'z'),
                ('bool'  , 'on_ground'),
            ),
            #Player Look
            0x05: (
                ('float', 'yaw'),
                ('float', 'pitch'),
                ('bool' , 'on_ground'),
            ),
            #Player Position and Look
            0x06: (
                ('double', 'x'),
                ('double', 'y'),
                ('double', 'stance'),
                ('double', 'z'),
                ('float', 'yaw'),
                ('float', 'pitch'),
                ('bool' , 'on_ground'),
            ),
            #Player Digging
            0x07: (
                ('byte' , 'status'),
                ('int'  , 'x'),
                ('ubyte', 'y'),
                ('int'  , 'z'),
                ('byte' , 'face'),
            ),
            #Player Block Placement
            0x08: (
                ('int'  , 'x'),
                ('ubyte', 'y'),
                ('int'  , 'z'),
                ('byte' , 'direction'),
                ('slot' , 'held_item'),
                ('byte' , 'cur_pos_x'),
                ('byte' , 'cur_pos_y'),
                ('byte' , 'cur_pos_z'),
            ),
            #Held Item Change
            0x09: (
                ('short', 'slot'),
            ),
            #Animation
            0x0A: (
                ('int', 'eid'),
                ('byte', 'animation'),
            ),
            #Entity Action
            0x0B: (
                ('int' , 'eid'),
                ('byte', 'action'),
                ('int' , 'jump_boost'),
            ),
            #Steer Vehicle
            0x0C: (
                ('float', 'sideways'),
                ('float', 'forward'),
                ('bool' , 'jump'),
                ('bool' , 'unmount'),
            ),
            #Close Window
            0x0D: (
                ('byte', 'window_id'),
            ),
            #Click Window
            0x0E: (
                ('byte' , 'window_id'),
                ('short', 'slot'),
                ('byte' , 'button'),
                ('short', 'action'),
                ('byte' , 'mode'),
                ('slot' , 'clicked_item'),
            ),
            #Confirm Transaction
            0x0F: (
                ('byte' , 'window_id'),
                ('short', 'action'),
                ('bool' , 'accepted'),
            ),
            #Creative Inventory Action
            0x10: (
                ('short', 'slot'),
                ('slot' , 'clicked_item'),
            ),
            #Enchant Item
            0x11: (
                ('byte', 'window_id'),
                ('byte', 'enchantment'),
            ),
            #Update Sign
            0x12: (
                ('int'   , 'x'),
                ('short' , 'y'),
                ('int'   , 'z'),
                ('string', 'line_1'),
                ('string', 'line_2'),
                ('string', 'line_3'),
                ('string', 'line_4'),
            ),
            #Player Abilities
            0x13: (
                ('byte', 'flags'),
                ('float', 'flying_speed'),
                ('float', 'walking_speed'),
            ),
            #Tab-Complete
            0x14: (
                ('string', 'text'),
            ),
            #Client Settings
            0x15: (
                ('string', 'locale'),
                ('byte'  , 'view_distance'),
                ('byte'  , 'chat_flags'),
                ('bool'  , 'unused'),
                ('byte'  , 'difficulty'),
                ('bool'  , 'show_cape'),
            ),
            #Client Status
            0x16: (
                ('byte', 'action'),
            ),
            #Plugin Message
            0x17: (
                ('string', 'channel'),
                ('short' , 'size'),
            )
        },
    },
}