{-# 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.RDS.DescribeOptionGroups
-- Copyright   : (c) 2013-2023 Brendan Hay
-- License     : Mozilla Public License, v. 2.0.
-- Maintainer  : Brendan Hay
-- Stability   : auto-generated
-- Portability : non-portable (GHC extensions)
--
-- Describes the available option groups.
--
-- This operation returns paginated results.
module Amazonka.RDS.DescribeOptionGroups
  ( -- * Creating a Request
    DescribeOptionGroups (..),
    newDescribeOptionGroups,

    -- * Request Lenses
    describeOptionGroups_engineName,
    describeOptionGroups_filters,
    describeOptionGroups_majorEngineVersion,
    describeOptionGroups_marker,
    describeOptionGroups_maxRecords,
    describeOptionGroups_optionGroupName,

    -- * Destructuring the Response
    DescribeOptionGroupsResponse (..),
    newDescribeOptionGroupsResponse,

    -- * Response Lenses
    describeOptionGroupsResponse_marker,
    describeOptionGroupsResponse_optionGroupsList,
    describeOptionGroupsResponse_httpStatus,
  )
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
import Amazonka.RDS.Types
import qualified Amazonka.Request as Request
import qualified Amazonka.Response as Response

-- |
--
-- /See:/ 'newDescribeOptionGroups' smart constructor.
data DescribeOptionGroups = DescribeOptionGroups'
  { -- | Filters the list of option groups to only include groups associated with
    -- a specific database engine.
    --
    -- Valid Values:
    --
    -- -   @mariadb@
    --
    -- -   @mysql@
    --
    -- -   @oracle-ee@
    --
    -- -   @oracle-ee-cdb@
    --
    -- -   @oracle-se2@
    --
    -- -   @oracle-se2-cdb@
    --
    -- -   @postgres@
    --
    -- -   @sqlserver-ee@
    --
    -- -   @sqlserver-se@
    --
    -- -   @sqlserver-ex@
    --
    -- -   @sqlserver-web@
    engineName :: Prelude.Maybe Prelude.Text,
    -- | This parameter isn\'t currently supported.
    filters :: Prelude.Maybe [Filter],
    -- | Filters the list of option groups to only include groups associated with
    -- a specific database engine version. If specified, then EngineName must
    -- also be specified.
    majorEngineVersion :: Prelude.Maybe Prelude.Text,
    -- | An optional pagination token provided by a previous DescribeOptionGroups
    -- request. If this parameter is specified, the response includes only
    -- records beyond the marker, up to the value specified by @MaxRecords@.
    marker :: Prelude.Maybe Prelude.Text,
    -- | The maximum number of records to include in the response. If more
    -- records exist than the specified @MaxRecords@ value, a pagination token
    -- called a marker is included in the response so that you can retrieve the
    -- remaining results.
    --
    -- Default: 100
    --
    -- Constraints: Minimum 20, maximum 100.
    maxRecords :: Prelude.Maybe Prelude.Int,
    -- | The name of the option group to describe. Can\'t be supplied together
    -- with EngineName or MajorEngineVersion.
    optionGroupName :: Prelude.Maybe Prelude.Text
  }
  deriving (Prelude.Eq, Prelude.Read, Prelude.Show, Prelude.Generic)

-- |
-- Create a value of 'DescribeOptionGroups' 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:
--
-- 'engineName', 'describeOptionGroups_engineName' - Filters the list of option groups to only include groups associated with
-- a specific database engine.
--
-- Valid Values:
--
-- -   @mariadb@
--
-- -   @mysql@
--
-- -   @oracle-ee@
--
-- -   @oracle-ee-cdb@
--
-- -   @oracle-se2@
--
-- -   @oracle-se2-cdb@
--
-- -   @postgres@
--
-- -   @sqlserver-ee@
--
-- -   @sqlserver-se@
--
-- -   @sqlserver-ex@
--
-- -   @sqlserver-web@
--
-- 'filters', 'describeOptionGroups_filters' - This parameter isn\'t currently supported.
--
-- 'majorEngineVersion', 'describeOptionGroups_majorEngineVersion' - Filters the list of option groups to only include groups associated with
-- a specific database engine version. If specified, then EngineName must
-- also be specified.
--
-- 'marker', 'describeOptionGroups_marker' - An optional pagination token provided by a previous DescribeOptionGroups
-- request. If this parameter is specified, the response includes only
-- records beyond the marker, up to the value specified by @MaxRecords@.
--
-- 'maxRecords', 'describeOptionGroups_maxRecords' - The maximum number of records to include in the response. If more
-- records exist than the specified @MaxRecords@ value, a pagination token
-- called a marker is included in the response so that you can retrieve the
-- remaining results.
--
-- Default: 100
--
-- Constraints: Minimum 20, maximum 100.
--
-- 'optionGroupName', 'describeOptionGroups_optionGroupName' - The name of the option group to describe. Can\'t be supplied together
-- with EngineName or MajorEngineVersion.
newDescribeOptionGroups ::
  DescribeOptionGroups
newDescribeOptionGroups =
  DescribeOptionGroups'
    { engineName = Prelude.Nothing,
      filters = Prelude.Nothing,
      majorEngineVersion = Prelude.Nothing,
      marker = Prelude.Nothing,
      maxRecords = Prelude.Nothing,
      optionGroupName = Prelude.Nothing
    }

-- | Filters the list of option groups to only include groups associated with
-- a specific database engine.
--
-- Valid Values:
--
-- -   @mariadb@
--
-- -   @mysql@
--
-- -   @oracle-ee@
--
-- -   @oracle-ee-cdb@
--
-- -   @oracle-se2@
--
-- -   @oracle-se2-cdb@
--
-- -   @postgres@
--
-- -   @sqlserver-ee@
--
-- -   @sqlserver-se@
--
-- -   @sqlserver-ex@
--
-- -   @sqlserver-web@
describeOptionGroups_engineName :: Lens.Lens' DescribeOptionGroups (Prelude.Maybe Prelude.Text)
describeOptionGroups_engineName = Lens.lens (\DescribeOptionGroups' {engineName} -> engineName) (\s@DescribeOptionGroups' {} a -> s {engineName = a} :: DescribeOptionGroups)

-- | This parameter isn\'t currently supported.
describeOptionGroups_filters :: Lens.Lens' DescribeOptionGroups (Prelude.Maybe [Filter])
describeOptionGroups_filters = Lens.lens (\DescribeOptionGroups' {filters} -> filters) (\s@DescribeOptionGroups' {} a -> s {filters = a} :: DescribeOptionGroups) Prelude.. Lens.mapping Lens.coerced

-- | Filters the list of option groups to only include groups associated with
-- a specific database engine version. If specified, then EngineName must
-- also be specified.
describeOptionGroups_majorEngineVersion :: Lens.Lens' DescribeOptionGroups (Prelude.Maybe Prelude.Text)
describeOptionGroups_majorEngineVersion = Lens.lens (\DescribeOptionGroups' {majorEngineVersion} -> majorEngineVersion) (\s@DescribeOptionGroups' {} a -> s {majorEngineVersion = a} :: DescribeOptionGroups)

-- | An optional pagination token provided by a previous DescribeOptionGroups
-- request. If this parameter is specified, the response includes only
-- records beyond the marker, up to the value specified by @MaxRecords@.
describeOptionGroups_marker :: Lens.Lens' DescribeOptionGroups (Prelude.Maybe Prelude.Text)
describeOptionGroups_marker = Lens.lens (\DescribeOptionGroups' {marker} -> marker) (\s@DescribeOptionGroups' {} a -> s {marker = a} :: DescribeOptionGroups)

-- | The maximum number of records to include in the response. If more
-- records exist than the specified @MaxRecords@ value, a pagination token
-- called a marker is included in the response so that you can retrieve the
-- remaining results.
--
-- Default: 100
--
-- Constraints: Minimum 20, maximum 100.
describeOptionGroups_maxRecords :: Lens.Lens' DescribeOptionGroups (Prelude.Maybe Prelude.Int)
describeOptionGroups_maxRecords = Lens.lens (\DescribeOptionGroups' {maxRecords} -> maxRecords) (\s@DescribeOptionGroups' {} a -> s {maxRecords = a} :: DescribeOptionGroups)

-- | The name of the option group to describe. Can\'t be supplied together
-- with EngineName or MajorEngineVersion.
describeOptionGroups_optionGroupName :: Lens.Lens' DescribeOptionGroups (Prelude.Maybe Prelude.Text)
describeOptionGroups_optionGroupName = Lens.lens (\DescribeOptionGroups' {optionGroupName} -> optionGroupName) (\s@DescribeOptionGroups' {} a -> s {optionGroupName = a} :: DescribeOptionGroups)

instance Core.AWSPager DescribeOptionGroups where
  page rq rs
    | Core.stop
        ( rs
            Lens.^? describeOptionGroupsResponse_marker
            Prelude.. Lens._Just
        ) =
        Prelude.Nothing
    | Core.stop
        ( rs
            Lens.^? describeOptionGroupsResponse_optionGroupsList
            Prelude.. Lens._Just
        ) =
        Prelude.Nothing
    | Prelude.otherwise =
        Prelude.Just
          Prelude.$ rq
          Prelude.& describeOptionGroups_marker
          Lens..~ rs
          Lens.^? describeOptionGroupsResponse_marker
          Prelude.. Lens._Just

instance Core.AWSRequest DescribeOptionGroups where
  type
    AWSResponse DescribeOptionGroups =
      DescribeOptionGroupsResponse
  request overrides =
    Request.postQuery (overrides defaultService)
  response =
    Response.receiveXMLWrapper
      "DescribeOptionGroupsResult"
      ( \s h x ->
          DescribeOptionGroupsResponse'
            Prelude.<$> (x Data..@? "Marker")
            Prelude.<*> ( x
                            Data..@? "OptionGroupsList"
                            Core..!@ Prelude.mempty
                            Prelude.>>= Core.may (Data.parseXMLList "OptionGroup")
                        )
            Prelude.<*> (Prelude.pure (Prelude.fromEnum s))
      )

instance Prelude.Hashable DescribeOptionGroups where
  hashWithSalt _salt DescribeOptionGroups' {..} =
    _salt
      `Prelude.hashWithSalt` engineName
      `Prelude.hashWithSalt` filters
      `Prelude.hashWithSalt` majorEngineVersion
      `Prelude.hashWithSalt` marker
      `Prelude.hashWithSalt` maxRecords
      `Prelude.hashWithSalt` optionGroupName

instance Prelude.NFData DescribeOptionGroups where
  rnf DescribeOptionGroups' {..} =
    Prelude.rnf engineName
      `Prelude.seq` Prelude.rnf filters
      `Prelude.seq` Prelude.rnf majorEngineVersion
      `Prelude.seq` Prelude.rnf marker
      `Prelude.seq` Prelude.rnf maxRecords
      `Prelude.seq` Prelude.rnf optionGroupName

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

instance Data.ToPath DescribeOptionGroups where
  toPath = Prelude.const "/"

instance Data.ToQuery DescribeOptionGroups where
  toQuery DescribeOptionGroups' {..} =
    Prelude.mconcat
      [ "Action"
          Data.=: ("DescribeOptionGroups" :: Prelude.ByteString),
        "Version"
          Data.=: ("2014-10-31" :: Prelude.ByteString),
        "EngineName" Data.=: engineName,
        "Filters"
          Data.=: Data.toQuery
            (Data.toQueryList "Filter" Prelude.<$> filters),
        "MajorEngineVersion" Data.=: majorEngineVersion,
        "Marker" Data.=: marker,
        "MaxRecords" Data.=: maxRecords,
        "OptionGroupName" Data.=: optionGroupName
      ]

-- | List of option groups.
--
-- /See:/ 'newDescribeOptionGroupsResponse' smart constructor.
data DescribeOptionGroupsResponse = DescribeOptionGroupsResponse'
  { -- | An optional pagination token provided by a previous request. If this
    -- parameter is specified, the response includes only records beyond the
    -- marker, up to the value specified by @MaxRecords@.
    marker :: Prelude.Maybe Prelude.Text,
    -- | List of option groups.
    optionGroupsList :: Prelude.Maybe [OptionGroup],
    -- | The response's http status code.
    httpStatus :: Prelude.Int
  }
  deriving (Prelude.Eq, Prelude.Read, Prelude.Show, Prelude.Generic)

-- |
-- Create a value of 'DescribeOptionGroupsResponse' 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:
--
-- 'marker', 'describeOptionGroupsResponse_marker' - An optional pagination token provided by a previous request. If this
-- parameter is specified, the response includes only records beyond the
-- marker, up to the value specified by @MaxRecords@.
--
-- 'optionGroupsList', 'describeOptionGroupsResponse_optionGroupsList' - List of option groups.
--
-- 'httpStatus', 'describeOptionGroupsResponse_httpStatus' - The response's http status code.
newDescribeOptionGroupsResponse ::
  -- | 'httpStatus'
  Prelude.Int ->
  DescribeOptionGroupsResponse
newDescribeOptionGroupsResponse pHttpStatus_ =
  DescribeOptionGroupsResponse'
    { marker =
        Prelude.Nothing,
      optionGroupsList = Prelude.Nothing,
      httpStatus = pHttpStatus_
    }

-- | An optional pagination token provided by a previous request. If this
-- parameter is specified, the response includes only records beyond the
-- marker, up to the value specified by @MaxRecords@.
describeOptionGroupsResponse_marker :: Lens.Lens' DescribeOptionGroupsResponse (Prelude.Maybe Prelude.Text)
describeOptionGroupsResponse_marker = Lens.lens (\DescribeOptionGroupsResponse' {marker} -> marker) (\s@DescribeOptionGroupsResponse' {} a -> s {marker = a} :: DescribeOptionGroupsResponse)

-- | List of option groups.
describeOptionGroupsResponse_optionGroupsList :: Lens.Lens' DescribeOptionGroupsResponse (Prelude.Maybe [OptionGroup])
describeOptionGroupsResponse_optionGroupsList = Lens.lens (\DescribeOptionGroupsResponse' {optionGroupsList} -> optionGroupsList) (\s@DescribeOptionGroupsResponse' {} a -> s {optionGroupsList = a} :: DescribeOptionGroupsResponse) Prelude.. Lens.mapping Lens.coerced

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

instance Prelude.NFData DescribeOptionGroupsResponse where
  rnf DescribeOptionGroupsResponse' {..} =
    Prelude.rnf marker
      `Prelude.seq` Prelude.rnf optionGroupsList
      `Prelude.seq` Prelude.rnf httpStatus