{-# 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.Lambda.Types.Filter
-- 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.Lambda.Types.Filter where

import qualified Amazonka.Core as Core
import qualified Amazonka.Core.Lens.Internal as Lens
import qualified Amazonka.Data as Data
import qualified Amazonka.Prelude as Prelude

-- | A structure within a @FilterCriteria@ object that defines an event
-- filtering pattern.
--
-- /See:/ 'newFilter' smart constructor.
data Filter = Filter'
  { -- | A filter pattern. For more information on the syntax of a filter
    -- pattern, see
    -- <https://docs.aws.amazon.com/lambda/latest/dg/invocation-eventfiltering.html#filtering-syntax Filter rule syntax>.
    Filter -> Maybe Text
pattern' :: Prelude.Maybe Prelude.Text
  }
  deriving (Filter -> Filter -> Bool
forall a. (a -> a -> Bool) -> (a -> a -> Bool) -> Eq a
/= :: Filter -> Filter -> Bool
$c/= :: Filter -> Filter -> Bool
== :: Filter -> Filter -> Bool
$c== :: Filter -> Filter -> Bool
Prelude.Eq, ReadPrec [Filter]
ReadPrec Filter
Int -> ReadS Filter
ReadS [Filter]
forall a.
(Int -> ReadS a)
-> ReadS [a] -> ReadPrec a -> ReadPrec [a] -> Read a
readListPrec :: ReadPrec [Filter]
$creadListPrec :: ReadPrec [Filter]
readPrec :: ReadPrec Filter
$creadPrec :: ReadPrec Filter
readList :: ReadS [Filter]
$creadList :: ReadS [Filter]
readsPrec :: Int -> ReadS Filter
$creadsPrec :: Int -> ReadS Filter
Prelude.Read, Int -> Filter -> ShowS
[Filter] -> ShowS
Filter -> String
forall a.
(Int -> a -> ShowS) -> (a -> String) -> ([a] -> ShowS) -> Show a
showList :: [Filter] -> ShowS
$cshowList :: [Filter] -> ShowS
show :: Filter -> String
$cshow :: Filter -> String
showsPrec :: Int -> Filter -> ShowS
$cshowsPrec :: Int -> Filter -> ShowS
Prelude.Show, forall x. Rep Filter x -> Filter
forall x. Filter -> Rep Filter x
forall a.
(forall x. a -> Rep a x) -> (forall x. Rep a x -> a) -> Generic a
$cto :: forall x. Rep Filter x -> Filter
$cfrom :: forall x. Filter -> Rep Filter x
Prelude.Generic)

-- |
-- Create a value of 'Filter' 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:
--
-- 'pattern'', 'filter_pattern' - A filter pattern. For more information on the syntax of a filter
-- pattern, see
-- <https://docs.aws.amazon.com/lambda/latest/dg/invocation-eventfiltering.html#filtering-syntax Filter rule syntax>.
newFilter ::
  Filter
newFilter :: Filter
newFilter = Filter' {$sel:pattern':Filter' :: Maybe Text
pattern' = forall a. Maybe a
Prelude.Nothing}

-- | A filter pattern. For more information on the syntax of a filter
-- pattern, see
-- <https://docs.aws.amazon.com/lambda/latest/dg/invocation-eventfiltering.html#filtering-syntax Filter rule syntax>.
filter_pattern :: Lens.Lens' Filter (Prelude.Maybe Prelude.Text)
filter_pattern :: Lens' Filter (Maybe Text)
filter_pattern = forall s a b t. (s -> a) -> (s -> b -> t) -> Lens s t a b
Lens.lens (\Filter' {Maybe Text
pattern' :: Maybe Text
$sel:pattern':Filter' :: Filter -> Maybe Text
pattern'} -> Maybe Text
pattern') (\s :: Filter
s@Filter' {} Maybe Text
a -> Filter
s {$sel:pattern':Filter' :: Maybe Text
pattern' = Maybe Text
a} :: Filter)

instance Data.FromJSON Filter where
  parseJSON :: Value -> Parser Filter
parseJSON =
    forall a. String -> (Object -> Parser a) -> Value -> Parser a
Data.withObject
      String
"Filter"
      (\Object
x -> Maybe Text -> Filter
Filter' 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
"Pattern"))

instance Prelude.Hashable Filter where
  hashWithSalt :: Int -> Filter -> Int
hashWithSalt Int
_salt Filter' {Maybe Text
pattern' :: Maybe Text
$sel:pattern':Filter' :: Filter -> Maybe Text
..} =
    Int
_salt forall a. Hashable a => Int -> a -> Int
`Prelude.hashWithSalt` Maybe Text
pattern'

instance Prelude.NFData Filter where
  rnf :: Filter -> ()
rnf Filter' {Maybe Text
pattern' :: Maybe Text
$sel:pattern':Filter' :: Filter -> Maybe Text
..} = forall a. NFData a => a -> ()
Prelude.rnf Maybe Text
pattern'

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