from __future__ import absolute_import

from .api import Request, Response
from .struct import Struct
from .types import Array, Bytes, Int16, Int32, Schema, String


class JoinGroupResponse_v0(Response):
    API_KEY = 11
    API_VERSION = 0
    SCHEMA = Schema(
        ('error_code', Int16),
        ('generation_id', Int32),
        ('group_protocol', String('utf-8')),
        ('leader_id', String('utf-8')),
        ('member_id', String('utf-8')),
        ('members', Array(
            ('member_id', String('utf-8')),
            ('member_metadata', Bytes)))
    )


class JoinGroupResponse_v1(Response):
    API_KEY = 11
    API_VERSION = 1
    SCHEMA = JoinGroupResponse_v0.SCHEMA


class JoinGroupRequest_v0(Request):
    API_KEY = 11
    API_VERSION = 0
    RESPONSE_TYPE = JoinGroupResponse_v0
    SCHEMA = Schema(
        ('group', String('utf-8')),
        ('session_timeout', Int32),
        ('member_id', String('utf-8')),
        ('protocol_type', String('utf-8')),
        ('group_protocols', Array(
            ('protocol_name', String('utf-8')),
            ('protocol_metadata', Bytes)))
    )
    UNKNOWN_MEMBER_ID = ''


class JoinGroupRequest_v1(Request):
    API_KEY = 11
    API_VERSION = 1
    RESPONSE_TYPE = JoinGroupResponse_v1
    SCHEMA = Schema(
        ('group', String('utf-8')),
        ('session_timeout', Int32),
        ('rebalance_timeout', Int32),
        ('member_id', String('utf-8')),
        ('protocol_type', String('utf-8')),
        ('group_protocols', Array(
            ('protocol_name', String('utf-8')),
            ('protocol_metadata', Bytes)))
    )
    UNKNOWN_MEMBER_ID = ''


JoinGroupRequest = [JoinGroupRequest_v0, JoinGroupRequest_v1]
JoinGroupResponse = [JoinGroupResponse_v0, JoinGroupResponse_v1]


class ProtocolMetadata(Struct):
    SCHEMA = Schema(
        ('version', Int16),
        ('subscription', Array(String('utf-8'))), # topics list
        ('user_data', Bytes)
    )


class SyncGroupResponse_v0(Response):
    API_KEY = 14
    API_VERSION = 0
    SCHEMA = Schema(
        ('error_code', Int16),
        ('member_assignment', Bytes)
    )


class SyncGroupRequest_v0(Request):
    API_KEY = 14
    API_VERSION = 0
    RESPONSE_TYPE = SyncGroupResponse_v0
    SCHEMA = Schema(
        ('group', String('utf-8')),
        ('generation_id', Int32),
        ('member_id', String('utf-8')),
        ('group_assignment', Array(
            ('member_id', String('utf-8')),
            ('member_metadata', Bytes)))
    )


SyncGroupRequest = [SyncGroupRequest_v0]
SyncGroupResponse = [SyncGroupResponse_v0]


class MemberAssignment(Struct):
    SCHEMA = Schema(
        ('version', Int16),
        ('assignment', Array(
            ('topic', String('utf-8')),
            ('partitions', Array(Int32)))),
        ('user_data', Bytes)
    )


class HeartbeatResponse_v0(Response):
    API_KEY = 12
    API_VERSION = 0
    SCHEMA = Schema(
        ('error_code', Int16)
    )


class HeartbeatRequest_v0(Request):
    API_KEY = 12
    API_VERSION = 0
    RESPONSE_TYPE = HeartbeatResponse_v0
    SCHEMA = Schema(
        ('group', String('utf-8')),
        ('generation_id', Int32),
        ('member_id', String('utf-8'))
    )


HeartbeatRequest = [HeartbeatRequest_v0]
HeartbeatResponse = [HeartbeatResponse_v0]


class LeaveGroupResponse_v0(Response):
    API_KEY = 13
    API_VERSION = 0
    SCHEMA = Schema(
        ('error_code', Int16)
    )


class LeaveGroupRequest_v0(Request):
    API_KEY = 13
    API_VERSION = 0
    RESPONSE_TYPE = LeaveGroupResponse_v0
    SCHEMA = Schema(
        ('group', String('utf-8')),
        ('member_id', String('utf-8'))
    )


LeaveGroupRequest = [LeaveGroupRequest_v0]
LeaveGroupResponse = [LeaveGroupResponse_v0]