{-# LANGUAGE DeriveGeneric #-}
{-# LANGUAGE DuplicateRecordFields #-}
{-# LANGUAGE NamedFieldPuns #-}
{-# LANGUAGE OverloadedStrings #-}
{-# LANGUAGE RecordWildCards #-}
{-# LANGUAGE StrictData #-}
{-# LANGUAGE NoImplicitPrelude #-}
{-# OPTIONS_GHC -fno-warn-unused-imports #-}
{-# OPTIONS_GHC -fno-warn-unused-matches #-}

-- Derived from AWS service descriptions, licensed under Apache 2.0.

-- |
-- Module      : Amazonka.LexV2Models.Types.MessageGroup
-- Copyright   : (c) 2013-2023 Brendan Hay
-- License     : Mozilla Public License, v. 2.0.
-- Maintainer  : Brendan Hay
-- Stability   : auto-generated
-- Portability : non-portable (GHC extensions)
module Amazonka.LexV2Models.Types.MessageGroup where

import qualified Amazonka.Core as Core
import qualified Amazonka.Core.Lens.Internal as Lens
import qualified Amazonka.Data as Data
import Amazonka.LexV2Models.Types.Message
import qualified Amazonka.Prelude as Prelude

-- | Provides one or more messages that Amazon Lex should send to the user.
--
-- /See:/ 'newMessageGroup' smart constructor.
data MessageGroup = MessageGroup'
  { -- | Message variations to send to the user. When variations are defined,
    -- Amazon Lex chooses the primary message or one of the variations to send
    -- to the user.
    MessageGroup -> Maybe [Message]
variations :: Prelude.Maybe [Message],
    -- | The primary message that Amazon Lex should send to the user.
    MessageGroup -> Message
message :: Message
  }
  deriving (MessageGroup -> MessageGroup -> Bool
forall a. (a -> a -> Bool) -> (a -> a -> Bool) -> Eq a
/= :: MessageGroup -> MessageGroup -> Bool
$c/= :: MessageGroup -> MessageGroup -> Bool
== :: MessageGroup -> MessageGroup -> Bool
$c== :: MessageGroup -> MessageGroup -> Bool
Prelude.Eq, ReadPrec [MessageGroup]
ReadPrec MessageGroup
Int -> ReadS MessageGroup
ReadS [MessageGroup]
forall a.
(Int -> ReadS a)
-> ReadS [a] -> ReadPrec a -> ReadPrec [a] -> Read a
readListPrec :: ReadPrec [MessageGroup]
$creadListPrec :: ReadPrec [MessageGroup]
readPrec :: ReadPrec MessageGroup
$creadPrec :: ReadPrec MessageGroup
readList :: ReadS [MessageGroup]
$creadList :: ReadS [MessageGroup]
readsPrec :: Int -> ReadS MessageGroup
$creadsPrec :: Int -> ReadS MessageGroup
Prelude.Read, Int -> MessageGroup -> ShowS
[MessageGroup] -> ShowS
MessageGroup -> String
forall a.
(Int -> a -> ShowS) -> (a -> String) -> ([a] -> ShowS) -> Show a
showList :: [MessageGroup] -> ShowS
$cshowList :: [MessageGroup] -> ShowS
show :: MessageGroup -> String
$cshow :: MessageGroup -> String
showsPrec :: Int -> MessageGroup -> ShowS
$cshowsPrec :: Int -> MessageGroup -> ShowS
Prelude.Show, forall x. Rep MessageGroup x -> MessageGroup
forall x. MessageGroup -> Rep MessageGroup x
forall a.
(forall x. a -> Rep a x) -> (forall x. Rep a x -> a) -> Generic a
$cto :: forall x. Rep MessageGroup x -> MessageGroup
$cfrom :: forall x. MessageGroup -> Rep MessageGroup x
Prelude.Generic)

-- |
-- Create a value of 'MessageGroup' with all optional fields omitted.
--
-- Use <https://hackage.haskell.org/package/generic-lens generic-lens> or <https://hackage.haskell.org/package/optics optics> to modify other optional fields.
--
-- The following record fields are available, with the corresponding lenses provided
-- for backwards compatibility:
--
-- 'variations', 'messageGroup_variations' - Message variations to send to the user. When variations are defined,
-- Amazon Lex chooses the primary message or one of the variations to send
-- to the user.
--
-- 'message', 'messageGroup_message' - The primary message that Amazon Lex should send to the user.
newMessageGroup ::
  -- | 'message'
  Message ->
  MessageGroup
newMessageGroup :: Message -> MessageGroup
newMessageGroup Message
pMessage_ =
  MessageGroup'
    { $sel:variations:MessageGroup' :: Maybe [Message]
variations = forall a. Maybe a
Prelude.Nothing,
      $sel:message:MessageGroup' :: Message
message = Message
pMessage_
    }

-- | Message variations to send to the user. When variations are defined,
-- Amazon Lex chooses the primary message or one of the variations to send
-- to the user.
messageGroup_variations :: Lens.Lens' MessageGroup (Prelude.Maybe [Message])
messageGroup_variations :: Lens' MessageGroup (Maybe [Message])
messageGroup_variations = forall s a b t. (s -> a) -> (s -> b -> t) -> Lens s t a b
Lens.lens (\MessageGroup' {Maybe [Message]
variations :: Maybe [Message]
$sel:variations:MessageGroup' :: MessageGroup -> Maybe [Message]
variations} -> Maybe [Message]
variations) (\s :: MessageGroup
s@MessageGroup' {} Maybe [Message]
a -> MessageGroup
s {$sel:variations:MessageGroup' :: Maybe [Message]
variations = Maybe [Message]
a} :: MessageGroup) forall b c a. (b -> c) -> (a -> b) -> a -> c
Prelude.. forall (f :: * -> *) (g :: * -> *) s t a b.
(Functor f, Functor g) =>
AnIso s t a b -> Iso (f s) (g t) (f a) (g b)
Lens.mapping forall s t a b. (Coercible s a, Coercible t b) => Iso s t a b
Lens.coerced

-- | The primary message that Amazon Lex should send to the user.
messageGroup_message :: Lens.Lens' MessageGroup Message
messageGroup_message :: Lens' MessageGroup Message
messageGroup_message = forall s a b t. (s -> a) -> (s -> b -> t) -> Lens s t a b
Lens.lens (\MessageGroup' {Message
message :: Message
$sel:message:MessageGroup' :: MessageGroup -> Message
message} -> Message
message) (\s :: MessageGroup
s@MessageGroup' {} Message
a -> MessageGroup
s {$sel:message:MessageGroup' :: Message
message = Message
a} :: MessageGroup)

instance Data.FromJSON MessageGroup where
  parseJSON :: Value -> Parser MessageGroup
parseJSON =
    forall a. String -> (Object -> Parser a) -> Value -> Parser a
Data.withObject
      String
"MessageGroup"
      ( \Object
x ->
          Maybe [Message] -> Message -> MessageGroup
MessageGroup'
            forall (f :: * -> *) a b. Functor f => (a -> b) -> f a -> f b
Prelude.<$> (Object
x forall a. FromJSON a => Object -> Key -> Parser (Maybe a)
Data..:? Key
"variations" forall a. Parser (Maybe a) -> a -> Parser a
Data..!= forall a. Monoid a => a
Prelude.mempty)
            forall (f :: * -> *) a b. Applicative f => f (a -> b) -> f a -> f b
Prelude.<*> (Object
x forall a. FromJSON a => Object -> Key -> Parser a
Data..: Key
"message")
      )

instance Prelude.Hashable MessageGroup where
  hashWithSalt :: Int -> MessageGroup -> Int
hashWithSalt Int
_salt MessageGroup' {Maybe [Message]
Message
message :: Message
variations :: Maybe [Message]
$sel:message:MessageGroup' :: MessageGroup -> Message
$sel:variations:MessageGroup' :: MessageGroup -> Maybe [Message]
..} =
    Int
_salt
      forall a. Hashable a => Int -> a -> Int
`Prelude.hashWithSalt` Maybe [Message]
variations
      forall a. Hashable a => Int -> a -> Int
`Prelude.hashWithSalt` Message
message

instance Prelude.NFData MessageGroup where
  rnf :: MessageGroup -> ()
rnf MessageGroup' {Maybe [Message]
Message
message :: Message
variations :: Maybe [Message]
$sel:message:MessageGroup' :: MessageGroup -> Message
$sel:variations:MessageGroup' :: MessageGroup -> Maybe [Message]
..} =
    forall a. NFData a => a -> ()
Prelude.rnf Maybe [Message]
variations
      seq :: forall a b. a -> b -> b
`Prelude.seq` forall a. NFData a => a -> ()
Prelude.rnf Message
message

instance Data.ToJSON MessageGroup where
  toJSON :: MessageGroup -> Value
toJSON MessageGroup' {Maybe [Message]
Message
message :: Message
variations :: Maybe [Message]
$sel:message:MessageGroup' :: MessageGroup -> Message
$sel:variations:MessageGroup' :: MessageGroup -> Maybe [Message]
..} =
    [Pair] -> Value
Data.object
      ( forall a. [Maybe a] -> [a]
Prelude.catMaybes
          [ (Key
"variations" forall kv v. (KeyValue kv, ToJSON v) => Key -> v -> kv
Data..=) forall (f :: * -> *) a b. Functor f => (a -> b) -> f a -> f b
Prelude.<$> Maybe [Message]
variations,
            forall a. a -> Maybe a
Prelude.Just (Key
"message" forall kv v. (KeyValue kv, ToJSON v) => Key -> v -> kv
Data..= Message
message)
          ]
      )