{-# 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.ElasticBeanstalk.DescribeApplications
-- Copyright   : (c) 2013-2023 Brendan Hay
-- License     : Mozilla Public License, v. 2.0.
-- Maintainer  : Brendan Hay
-- Stability   : auto-generated
-- Portability : non-portable (GHC extensions)
--
-- Returns the descriptions of existing applications.
module Amazonka.ElasticBeanstalk.DescribeApplications
  ( -- * Creating a Request
    DescribeApplications (..),
    newDescribeApplications,

    -- * Request Lenses
    describeApplications_applicationNames,

    -- * Destructuring the Response
    DescribeApplicationsResponse (..),
    newDescribeApplicationsResponse,

    -- * Response Lenses
    describeApplicationsResponse_applications,
    describeApplicationsResponse_httpStatus,
  )
where

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

-- | Request to describe one or more applications.
--
-- /See:/ 'newDescribeApplications' smart constructor.
data DescribeApplications = DescribeApplications'
  { -- | If specified, AWS Elastic Beanstalk restricts the returned descriptions
    -- to only include those with the specified names.
    applicationNames :: Prelude.Maybe [Prelude.Text]
  }
  deriving (Prelude.Eq, Prelude.Read, Prelude.Show, Prelude.Generic)

-- |
-- Create a value of 'DescribeApplications' 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:
--
-- 'applicationNames', 'describeApplications_applicationNames' - If specified, AWS Elastic Beanstalk restricts the returned descriptions
-- to only include those with the specified names.
newDescribeApplications ::
  DescribeApplications
newDescribeApplications =
  DescribeApplications'
    { applicationNames =
        Prelude.Nothing
    }

-- | If specified, AWS Elastic Beanstalk restricts the returned descriptions
-- to only include those with the specified names.
describeApplications_applicationNames :: Lens.Lens' DescribeApplications (Prelude.Maybe [Prelude.Text])
describeApplications_applicationNames = Lens.lens (\DescribeApplications' {applicationNames} -> applicationNames) (\s@DescribeApplications' {} a -> s {applicationNames = a} :: DescribeApplications) Prelude.. Lens.mapping Lens.coerced

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

instance Prelude.Hashable DescribeApplications where
  hashWithSalt _salt DescribeApplications' {..} =
    _salt `Prelude.hashWithSalt` applicationNames

instance Prelude.NFData DescribeApplications where
  rnf DescribeApplications' {..} =
    Prelude.rnf applicationNames

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

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

instance Data.ToQuery DescribeApplications where
  toQuery DescribeApplications' {..} =
    Prelude.mconcat
      [ "Action"
          Data.=: ("DescribeApplications" :: Prelude.ByteString),
        "Version"
          Data.=: ("2010-12-01" :: Prelude.ByteString),
        "ApplicationNames"
          Data.=: Data.toQuery
            ( Data.toQueryList "member"
                Prelude.<$> applicationNames
            )
      ]

-- | Result message containing a list of application descriptions.
--
-- /See:/ 'newDescribeApplicationsResponse' smart constructor.
data DescribeApplicationsResponse = DescribeApplicationsResponse'
  { -- | This parameter contains a list of ApplicationDescription.
    applications :: Prelude.Maybe [ApplicationDescription],
    -- | The response's http status code.
    httpStatus :: Prelude.Int
  }
  deriving (Prelude.Eq, Prelude.Read, Prelude.Show, Prelude.Generic)

-- |
-- Create a value of 'DescribeApplicationsResponse' 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:
--
-- 'applications', 'describeApplicationsResponse_applications' - This parameter contains a list of ApplicationDescription.
--
-- 'httpStatus', 'describeApplicationsResponse_httpStatus' - The response's http status code.
newDescribeApplicationsResponse ::
  -- | 'httpStatus'
  Prelude.Int ->
  DescribeApplicationsResponse
newDescribeApplicationsResponse pHttpStatus_ =
  DescribeApplicationsResponse'
    { applications =
        Prelude.Nothing,
      httpStatus = pHttpStatus_
    }

-- | This parameter contains a list of ApplicationDescription.
describeApplicationsResponse_applications :: Lens.Lens' DescribeApplicationsResponse (Prelude.Maybe [ApplicationDescription])
describeApplicationsResponse_applications = Lens.lens (\DescribeApplicationsResponse' {applications} -> applications) (\s@DescribeApplicationsResponse' {} a -> s {applications = a} :: DescribeApplicationsResponse) Prelude.. Lens.mapping Lens.coerced

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

instance Prelude.NFData DescribeApplicationsResponse where
  rnf DescribeApplicationsResponse' {..} =
    Prelude.rnf applications
      `Prelude.seq` Prelude.rnf httpStatus