{-# LANGUAGE DeriveGeneric #-}
{-# LANGUAGE DuplicateRecordFields #-}
{-# LANGUAGE NamedFieldPuns #-}
{-# LANGUAGE OverloadedStrings #-}
{-# LANGUAGE RecordWildCards #-}
{-# LANGUAGE StrictData #-}
{-# LANGUAGE TypeFamilies #-}
{-# LANGUAGE NoImplicitPrelude #-}
{-# OPTIONS_GHC -fno-warn-unused-binds #-}
{-# 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.ListLayers
-- Copyright   : (c) 2013-2023 Brendan Hay
-- License     : Mozilla Public License, v. 2.0.
-- Maintainer  : Brendan Hay
-- Stability   : auto-generated
-- Portability : non-portable (GHC extensions)
--
-- Lists
-- <https://docs.aws.amazon.com/lambda/latest/dg/invocation-layers.html Lambda layers>
-- and shows information about the latest version of each. Specify a
-- <https://docs.aws.amazon.com/lambda/latest/dg/lambda-runtimes.html runtime identifier>
-- to list only layers that indicate that they\'re compatible with that
-- runtime. Specify a compatible architecture to include only layers that
-- are compatible with that
-- <https://docs.aws.amazon.com/lambda/latest/dg/foundation-arch.html instruction set architecture>.
--
-- This operation returns paginated results.
module Amazonka.Lambda.ListLayers
  ( -- * Creating a Request
    ListLayers (..),
    newListLayers,

    -- * Request Lenses
    listLayers_compatibleArchitecture,
    listLayers_compatibleRuntime,
    listLayers_marker,
    listLayers_maxItems,

    -- * Destructuring the Response
    ListLayersResponse (..),
    newListLayersResponse,

    -- * Response Lenses
    listLayersResponse_layers,
    listLayersResponse_nextMarker,
    listLayersResponse_httpStatus,
  )
where

import qualified Amazonka.Core as Core
import qualified Amazonka.Core.Lens.Internal as Lens
import qualified Amazonka.Data as Data
import Amazonka.Lambda.Types
import qualified Amazonka.Prelude as Prelude
import qualified Amazonka.Request as Request
import qualified Amazonka.Response as Response

-- | /See:/ 'newListLayers' smart constructor.
data ListLayers = ListLayers'
  { -- | The compatible
    -- <https://docs.aws.amazon.com/lambda/latest/dg/foundation-arch.html instruction set architecture>.
    compatibleArchitecture :: Prelude.Maybe Architecture,
    -- | A runtime identifier. For example, @go1.x@.
    compatibleRuntime :: Prelude.Maybe Runtime,
    -- | A pagination token returned by a previous call.
    marker :: Prelude.Maybe Prelude.Text,
    -- | The maximum number of layers to return.
    maxItems :: Prelude.Maybe Prelude.Natural
  }
  deriving (Prelude.Eq, Prelude.Read, Prelude.Show, Prelude.Generic)

-- |
-- Create a value of 'ListLayers' 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:
--
-- 'compatibleArchitecture', 'listLayers_compatibleArchitecture' - The compatible
-- <https://docs.aws.amazon.com/lambda/latest/dg/foundation-arch.html instruction set architecture>.
--
-- 'compatibleRuntime', 'listLayers_compatibleRuntime' - A runtime identifier. For example, @go1.x@.
--
-- 'marker', 'listLayers_marker' - A pagination token returned by a previous call.
--
-- 'maxItems', 'listLayers_maxItems' - The maximum number of layers to return.
newListLayers ::
  ListLayers
newListLayers =
  ListLayers'
    { compatibleArchitecture =
        Prelude.Nothing,
      compatibleRuntime = Prelude.Nothing,
      marker = Prelude.Nothing,
      maxItems = Prelude.Nothing
    }

-- | The compatible
-- <https://docs.aws.amazon.com/lambda/latest/dg/foundation-arch.html instruction set architecture>.
listLayers_compatibleArchitecture :: Lens.Lens' ListLayers (Prelude.Maybe Architecture)
listLayers_compatibleArchitecture = Lens.lens (\ListLayers' {compatibleArchitecture} -> compatibleArchitecture) (\s@ListLayers' {} a -> s {compatibleArchitecture = a} :: ListLayers)

-- | A runtime identifier. For example, @go1.x@.
listLayers_compatibleRuntime :: Lens.Lens' ListLayers (Prelude.Maybe Runtime)
listLayers_compatibleRuntime = Lens.lens (\ListLayers' {compatibleRuntime} -> compatibleRuntime) (\s@ListLayers' {} a -> s {compatibleRuntime = a} :: ListLayers)

-- | A pagination token returned by a previous call.
listLayers_marker :: Lens.Lens' ListLayers (Prelude.Maybe Prelude.Text)
listLayers_marker = Lens.lens (\ListLayers' {marker} -> marker) (\s@ListLayers' {} a -> s {marker = a} :: ListLayers)

-- | The maximum number of layers to return.
listLayers_maxItems :: Lens.Lens' ListLayers (Prelude.Maybe Prelude.Natural)
listLayers_maxItems = Lens.lens (\ListLayers' {maxItems} -> maxItems) (\s@ListLayers' {} a -> s {maxItems = a} :: ListLayers)

instance Core.AWSPager ListLayers where
  page rq rs
    | Core.stop
        ( rs
            Lens.^? listLayersResponse_nextMarker
            Prelude.. Lens._Just
        ) =
        Prelude.Nothing
    | Core.stop
        ( rs
            Lens.^? listLayersResponse_layers
            Prelude.. Lens._Just
        ) =
        Prelude.Nothing
    | Prelude.otherwise =
        Prelude.Just
          Prelude.$ rq
          Prelude.& listLayers_marker
          Lens..~ rs
          Lens.^? listLayersResponse_nextMarker
          Prelude.. Lens._Just

instance Core.AWSRequest ListLayers where
  type AWSResponse ListLayers = ListLayersResponse
  request overrides =
    Request.get (overrides defaultService)
  response =
    Response.receiveJSON
      ( \s h x ->
          ListLayersResponse'
            Prelude.<$> (x Data..?> "Layers" Core..!@ Prelude.mempty)
            Prelude.<*> (x Data..?> "NextMarker")
            Prelude.<*> (Prelude.pure (Prelude.fromEnum s))
      )

instance Prelude.Hashable ListLayers where
  hashWithSalt _salt ListLayers' {..} =
    _salt
      `Prelude.hashWithSalt` compatibleArchitecture
      `Prelude.hashWithSalt` compatibleRuntime
      `Prelude.hashWithSalt` marker
      `Prelude.hashWithSalt` maxItems

instance Prelude.NFData ListLayers where
  rnf ListLayers' {..} =
    Prelude.rnf compatibleArchitecture
      `Prelude.seq` Prelude.rnf compatibleRuntime
      `Prelude.seq` Prelude.rnf marker
      `Prelude.seq` Prelude.rnf maxItems

instance Data.ToHeaders ListLayers where
  toHeaders = Prelude.const Prelude.mempty

instance Data.ToPath ListLayers where
  toPath = Prelude.const "/2018-10-31/layers"

instance Data.ToQuery ListLayers where
  toQuery ListLayers' {..} =
    Prelude.mconcat
      [ "CompatibleArchitecture"
          Data.=: compatibleArchitecture,
        "CompatibleRuntime" Data.=: compatibleRuntime,
        "Marker" Data.=: marker,
        "MaxItems" Data.=: maxItems
      ]

-- | /See:/ 'newListLayersResponse' smart constructor.
data ListLayersResponse = ListLayersResponse'
  { -- | A list of function layers.
    layers :: Prelude.Maybe [LayersListItem],
    -- | A pagination token returned when the response doesn\'t contain all
    -- layers.
    nextMarker :: Prelude.Maybe Prelude.Text,
    -- | The response's http status code.
    httpStatus :: Prelude.Int
  }
  deriving (Prelude.Eq, Prelude.Read, Prelude.Show, Prelude.Generic)

-- |
-- Create a value of 'ListLayersResponse' 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:
--
-- 'layers', 'listLayersResponse_layers' - A list of function layers.
--
-- 'nextMarker', 'listLayersResponse_nextMarker' - A pagination token returned when the response doesn\'t contain all
-- layers.
--
-- 'httpStatus', 'listLayersResponse_httpStatus' - The response's http status code.
newListLayersResponse ::
  -- | 'httpStatus'
  Prelude.Int ->
  ListLayersResponse
newListLayersResponse pHttpStatus_ =
  ListLayersResponse'
    { layers = Prelude.Nothing,
      nextMarker = Prelude.Nothing,
      httpStatus = pHttpStatus_
    }

-- | A list of function layers.
listLayersResponse_layers :: Lens.Lens' ListLayersResponse (Prelude.Maybe [LayersListItem])
listLayersResponse_layers = Lens.lens (\ListLayersResponse' {layers} -> layers) (\s@ListLayersResponse' {} a -> s {layers = a} :: ListLayersResponse) Prelude.. Lens.mapping Lens.coerced

-- | A pagination token returned when the response doesn\'t contain all
-- layers.
listLayersResponse_nextMarker :: Lens.Lens' ListLayersResponse (Prelude.Maybe Prelude.Text)
listLayersResponse_nextMarker = Lens.lens (\ListLayersResponse' {nextMarker} -> nextMarker) (\s@ListLayersResponse' {} a -> s {nextMarker = a} :: ListLayersResponse)

-- | The response's http status code.
listLayersResponse_httpStatus :: Lens.Lens' ListLayersResponse Prelude.Int
listLayersResponse_httpStatus = Lens.lens (\ListLayersResponse' {httpStatus} -> httpStatus) (\s@ListLayersResponse' {} a -> s {httpStatus = a} :: ListLayersResponse)

instance Prelude.NFData ListLayersResponse where
  rnf ListLayersResponse' {..} =
    Prelude.rnf layers
      `Prelude.seq` Prelude.rnf nextMarker
      `Prelude.seq` Prelude.rnf httpStatus