# Copyright 2019 Amazon.com, Inc. or its affiliates. All Rights Reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License").
# You may not use this file except in compliance with the License.
# A copy of the License is located at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# or in the "license" file accompanying this file. This file is distributed
# on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either
# express or implied. See the License for the specific language governing
# permissions and limitations under the License.
from __future__ import absolute_import

from enum import Enum


class Field(Enum):

    # Common fields
    Comment          = 'comment'
    InputPath        = 'input_path'
    OutputPath       = 'output_path'
    Parameters       = 'parameters'
    ResultPath       = 'result_path'
    Next             = 'next'
    Retry            = 'retry'
    Catch            = 'catch'
    Branches         = 'branches'
    End              = 'end'
    Version          = 'version'

    # Pass state fields
    Result           = 'result'

    # Fail state fields
    Error            = 'error'
    Cause            = 'cause'

    # Wait state fields
    Seconds          = 'seconds'
    Timestamp        = 'timestamp'
    SecondsPath      = 'seconds_path'
    TimestampPath    = 'timestamp_path'

    # Choice state fields
    Choices          = 'choices'
    Default          = 'default'

    # Map state fields
    Iterator         = 'iterator'
    ItemsPath        = 'items_path'
    MaxConcurrency   = 'max_concurrency'

    # Task state fields
    Resource             = 'resource'
    TimeoutSeconds       = 'timeout_seconds'
    TimeoutSecondsPath   = 'timeout_seconds_path'
    HeartbeatSeconds     = 'heartbeat_seconds'
    HeartbeatSecondsPath = 'heartbeat_seconds_path'

    # Retry and catch fields
    ErrorEquals      = 'error_equals'
    IntervalSeconds  = 'interval_seconds'
    MaxAttempts      = 'max_attempts'
    BackoffRate      = 'backoff_rate'
    NextStep         = 'next_step'