{-# 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.CloudSearch.DescribeExpressions
-- Copyright   : (c) 2013-2023 Brendan Hay
-- License     : Mozilla Public License, v. 2.0.
-- Maintainer  : Brendan Hay
-- Stability   : auto-generated
-- Portability : non-portable (GHC extensions)
--
-- Gets the expressions configured for the search domain. Can be limited to
-- specific expressions by name. By default, shows all expressions and
-- includes any pending changes to the configuration. Set the @Deployed@
-- option to @true@ to show the active configuration and exclude pending
-- changes. For more information, see
-- <http://docs.aws.amazon.com/cloudsearch/latest/developerguide/configuring-expressions.html Configuring Expressions>
-- in the /Amazon CloudSearch Developer Guide/.
module Amazonka.CloudSearch.DescribeExpressions
  ( -- * Creating a Request
    DescribeExpressions (..),
    newDescribeExpressions,

    -- * Request Lenses
    describeExpressions_deployed,
    describeExpressions_expressionNames,
    describeExpressions_domainName,

    -- * Destructuring the Response
    DescribeExpressionsResponse (..),
    newDescribeExpressionsResponse,

    -- * Response Lenses
    describeExpressionsResponse_httpStatus,
    describeExpressionsResponse_expressions,
  )
where

import Amazonka.CloudSearch.Types
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 qualified Amazonka.Request as Request
import qualified Amazonka.Response as Response

-- | Container for the parameters to the @DescribeDomains@ operation.
-- Specifies the name of the domain you want to describe. To restrict the
-- response to particular expressions, specify the names of the expressions
-- you want to describe. To show the active configuration and exclude any
-- pending changes, set the @Deployed@ option to @true@.
--
-- /See:/ 'newDescribeExpressions' smart constructor.
data DescribeExpressions = DescribeExpressions'
  { -- | Whether to display the deployed configuration (@true@) or include any
    -- pending changes (@false@). Defaults to @false@.
    deployed :: Prelude.Maybe Prelude.Bool,
    -- | Limits the @DescribeExpressions@ response to the specified expressions.
    -- If not specified, all expressions are shown.
    expressionNames :: Prelude.Maybe [Prelude.Text],
    -- | The name of the domain you want to describe.
    domainName :: Prelude.Text
  }
  deriving (Prelude.Eq, Prelude.Read, Prelude.Show, Prelude.Generic)

-- |
-- Create a value of 'DescribeExpressions' 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:
--
-- 'deployed', 'describeExpressions_deployed' - Whether to display the deployed configuration (@true@) or include any
-- pending changes (@false@). Defaults to @false@.
--
-- 'expressionNames', 'describeExpressions_expressionNames' - Limits the @DescribeExpressions@ response to the specified expressions.
-- If not specified, all expressions are shown.
--
-- 'domainName', 'describeExpressions_domainName' - The name of the domain you want to describe.
newDescribeExpressions ::
  -- | 'domainName'
  Prelude.Text ->
  DescribeExpressions
newDescribeExpressions pDomainName_ =
  DescribeExpressions'
    { deployed = Prelude.Nothing,
      expressionNames = Prelude.Nothing,
      domainName = pDomainName_
    }

-- | Whether to display the deployed configuration (@true@) or include any
-- pending changes (@false@). Defaults to @false@.
describeExpressions_deployed :: Lens.Lens' DescribeExpressions (Prelude.Maybe Prelude.Bool)
describeExpressions_deployed = Lens.lens (\DescribeExpressions' {deployed} -> deployed) (\s@DescribeExpressions' {} a -> s {deployed = a} :: DescribeExpressions)

-- | Limits the @DescribeExpressions@ response to the specified expressions.
-- If not specified, all expressions are shown.
describeExpressions_expressionNames :: Lens.Lens' DescribeExpressions (Prelude.Maybe [Prelude.Text])
describeExpressions_expressionNames = Lens.lens (\DescribeExpressions' {expressionNames} -> expressionNames) (\s@DescribeExpressions' {} a -> s {expressionNames = a} :: DescribeExpressions) Prelude.. Lens.mapping Lens.coerced

-- | The name of the domain you want to describe.
describeExpressions_domainName :: Lens.Lens' DescribeExpressions Prelude.Text
describeExpressions_domainName = Lens.lens (\DescribeExpressions' {domainName} -> domainName) (\s@DescribeExpressions' {} a -> s {domainName = a} :: DescribeExpressions)

instance Core.AWSRequest DescribeExpressions where
  type
    AWSResponse DescribeExpressions =
      DescribeExpressionsResponse
  request overrides =
    Request.postQuery (overrides defaultService)
  response =
    Response.receiveXMLWrapper
      "DescribeExpressionsResult"
      ( \s h x ->
          DescribeExpressionsResponse'
            Prelude.<$> (Prelude.pure (Prelude.fromEnum s))
            Prelude.<*> ( x
                            Data..@? "Expressions"
                            Core..!@ Prelude.mempty
                            Prelude.>>= Data.parseXMLList "member"
                        )
      )

instance Prelude.Hashable DescribeExpressions where
  hashWithSalt _salt DescribeExpressions' {..} =
    _salt
      `Prelude.hashWithSalt` deployed
      `Prelude.hashWithSalt` expressionNames
      `Prelude.hashWithSalt` domainName

instance Prelude.NFData DescribeExpressions where
  rnf DescribeExpressions' {..} =
    Prelude.rnf deployed
      `Prelude.seq` Prelude.rnf expressionNames
      `Prelude.seq` Prelude.rnf domainName

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

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

instance Data.ToQuery DescribeExpressions where
  toQuery DescribeExpressions' {..} =
    Prelude.mconcat
      [ "Action"
          Data.=: ("DescribeExpressions" :: Prelude.ByteString),
        "Version"
          Data.=: ("2013-01-01" :: Prelude.ByteString),
        "Deployed" Data.=: deployed,
        "ExpressionNames"
          Data.=: Data.toQuery
            ( Data.toQueryList "member"
                Prelude.<$> expressionNames
            ),
        "DomainName" Data.=: domainName
      ]

-- | The result of a @DescribeExpressions@ request. Contains the expressions
-- configured for the domain specified in the request.
--
-- /See:/ 'newDescribeExpressionsResponse' smart constructor.
data DescribeExpressionsResponse = DescribeExpressionsResponse'
  { -- | The response's http status code.
    httpStatus :: Prelude.Int,
    -- | The expressions configured for the domain.
    expressions :: [ExpressionStatus]
  }
  deriving (Prelude.Eq, Prelude.Read, Prelude.Show, Prelude.Generic)

-- |
-- Create a value of 'DescribeExpressionsResponse' 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:
--
-- 'httpStatus', 'describeExpressionsResponse_httpStatus' - The response's http status code.
--
-- 'expressions', 'describeExpressionsResponse_expressions' - The expressions configured for the domain.
newDescribeExpressionsResponse ::
  -- | 'httpStatus'
  Prelude.Int ->
  DescribeExpressionsResponse
newDescribeExpressionsResponse pHttpStatus_ =
  DescribeExpressionsResponse'
    { httpStatus =
        pHttpStatus_,
      expressions = Prelude.mempty
    }

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

-- | The expressions configured for the domain.
describeExpressionsResponse_expressions :: Lens.Lens' DescribeExpressionsResponse [ExpressionStatus]
describeExpressionsResponse_expressions = Lens.lens (\DescribeExpressionsResponse' {expressions} -> expressions) (\s@DescribeExpressionsResponse' {} a -> s {expressions = a} :: DescribeExpressionsResponse) Prelude.. Lens.coerced

instance Prelude.NFData DescribeExpressionsResponse where
  rnf DescribeExpressionsResponse' {..} =
    Prelude.rnf httpStatus
      `Prelude.seq` Prelude.rnf expressions