{-# 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.Batch.DescribeJobDefinitions
-- 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 a list of job definitions. You can specify a @status@ (such as
-- @ACTIVE@) to only return job definitions that match that status.
--
-- This operation returns paginated results.
module Amazonka.Batch.DescribeJobDefinitions
  ( -- * Creating a Request
    DescribeJobDefinitions (..),
    newDescribeJobDefinitions,

    -- * Request Lenses
    describeJobDefinitions_jobDefinitionName,
    describeJobDefinitions_jobDefinitions,
    describeJobDefinitions_maxResults,
    describeJobDefinitions_nextToken,
    describeJobDefinitions_status,

    -- * Destructuring the Response
    DescribeJobDefinitionsResponse (..),
    newDescribeJobDefinitionsResponse,

    -- * Response Lenses
    describeJobDefinitionsResponse_jobDefinitions,
    describeJobDefinitionsResponse_nextToken,
    describeJobDefinitionsResponse_httpStatus,
  )
where

import Amazonka.Batch.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

-- | Contains the parameters for @DescribeJobDefinitions@.
--
-- /See:/ 'newDescribeJobDefinitions' smart constructor.
data DescribeJobDefinitions = DescribeJobDefinitions'
  { -- | The name of the job definition to describe.
    jobDefinitionName :: Prelude.Maybe Prelude.Text,
    -- | A list of up to 100 job definitions. Each entry in the list can either
    -- be an ARN in the format
    -- @arn:aws:batch:${Region}:${Account}:job-definition\/${JobDefinitionName}:${Revision}@
    -- or a short version using the form @${JobDefinitionName}:${Revision}@.
    jobDefinitions :: Prelude.Maybe [Prelude.Text],
    -- | The maximum number of results returned by @DescribeJobDefinitions@ in
    -- paginated output. When this parameter is used, @DescribeJobDefinitions@
    -- only returns @maxResults@ results in a single page and a @nextToken@
    -- response element. The remaining results of the initial request can be
    -- seen by sending another @DescribeJobDefinitions@ request with the
    -- returned @nextToken@ value. This value can be between 1 and 100. If this
    -- parameter isn\'t used, then @DescribeJobDefinitions@ returns up to 100
    -- results and a @nextToken@ value if applicable.
    maxResults :: Prelude.Maybe Prelude.Int,
    -- | The @nextToken@ value returned from a previous paginated
    -- @DescribeJobDefinitions@ request where @maxResults@ was used and the
    -- results exceeded the value of that parameter. Pagination continues from
    -- the end of the previous results that returned the @nextToken@ value.
    -- This value is @null@ when there are no more results to return.
    --
    -- Treat this token as an opaque identifier that\'s only used to retrieve
    -- the next items in a list and not for other programmatic purposes.
    nextToken :: Prelude.Maybe Prelude.Text,
    -- | The status used to filter job definitions.
    status :: Prelude.Maybe Prelude.Text
  }
  deriving (Prelude.Eq, Prelude.Read, Prelude.Show, Prelude.Generic)

-- |
-- Create a value of 'DescribeJobDefinitions' 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:
--
-- 'jobDefinitionName', 'describeJobDefinitions_jobDefinitionName' - The name of the job definition to describe.
--
-- 'jobDefinitions', 'describeJobDefinitions_jobDefinitions' - A list of up to 100 job definitions. Each entry in the list can either
-- be an ARN in the format
-- @arn:aws:batch:${Region}:${Account}:job-definition\/${JobDefinitionName}:${Revision}@
-- or a short version using the form @${JobDefinitionName}:${Revision}@.
--
-- 'maxResults', 'describeJobDefinitions_maxResults' - The maximum number of results returned by @DescribeJobDefinitions@ in
-- paginated output. When this parameter is used, @DescribeJobDefinitions@
-- only returns @maxResults@ results in a single page and a @nextToken@
-- response element. The remaining results of the initial request can be
-- seen by sending another @DescribeJobDefinitions@ request with the
-- returned @nextToken@ value. This value can be between 1 and 100. If this
-- parameter isn\'t used, then @DescribeJobDefinitions@ returns up to 100
-- results and a @nextToken@ value if applicable.
--
-- 'nextToken', 'describeJobDefinitions_nextToken' - The @nextToken@ value returned from a previous paginated
-- @DescribeJobDefinitions@ request where @maxResults@ was used and the
-- results exceeded the value of that parameter. Pagination continues from
-- the end of the previous results that returned the @nextToken@ value.
-- This value is @null@ when there are no more results to return.
--
-- Treat this token as an opaque identifier that\'s only used to retrieve
-- the next items in a list and not for other programmatic purposes.
--
-- 'status', 'describeJobDefinitions_status' - The status used to filter job definitions.
newDescribeJobDefinitions ::
  DescribeJobDefinitions
newDescribeJobDefinitions =
  DescribeJobDefinitions'
    { jobDefinitionName =
        Prelude.Nothing,
      jobDefinitions = Prelude.Nothing,
      maxResults = Prelude.Nothing,
      nextToken = Prelude.Nothing,
      status = Prelude.Nothing
    }

-- | The name of the job definition to describe.
describeJobDefinitions_jobDefinitionName :: Lens.Lens' DescribeJobDefinitions (Prelude.Maybe Prelude.Text)
describeJobDefinitions_jobDefinitionName = Lens.lens (\DescribeJobDefinitions' {jobDefinitionName} -> jobDefinitionName) (\s@DescribeJobDefinitions' {} a -> s {jobDefinitionName = a} :: DescribeJobDefinitions)

-- | A list of up to 100 job definitions. Each entry in the list can either
-- be an ARN in the format
-- @arn:aws:batch:${Region}:${Account}:job-definition\/${JobDefinitionName}:${Revision}@
-- or a short version using the form @${JobDefinitionName}:${Revision}@.
describeJobDefinitions_jobDefinitions :: Lens.Lens' DescribeJobDefinitions (Prelude.Maybe [Prelude.Text])
describeJobDefinitions_jobDefinitions = Lens.lens (\DescribeJobDefinitions' {jobDefinitions} -> jobDefinitions) (\s@DescribeJobDefinitions' {} a -> s {jobDefinitions = a} :: DescribeJobDefinitions) Prelude.. Lens.mapping Lens.coerced

-- | The maximum number of results returned by @DescribeJobDefinitions@ in
-- paginated output. When this parameter is used, @DescribeJobDefinitions@
-- only returns @maxResults@ results in a single page and a @nextToken@
-- response element. The remaining results of the initial request can be
-- seen by sending another @DescribeJobDefinitions@ request with the
-- returned @nextToken@ value. This value can be between 1 and 100. If this
-- parameter isn\'t used, then @DescribeJobDefinitions@ returns up to 100
-- results and a @nextToken@ value if applicable.
describeJobDefinitions_maxResults :: Lens.Lens' DescribeJobDefinitions (Prelude.Maybe Prelude.Int)
describeJobDefinitions_maxResults = Lens.lens (\DescribeJobDefinitions' {maxResults} -> maxResults) (\s@DescribeJobDefinitions' {} a -> s {maxResults = a} :: DescribeJobDefinitions)

-- | The @nextToken@ value returned from a previous paginated
-- @DescribeJobDefinitions@ request where @maxResults@ was used and the
-- results exceeded the value of that parameter. Pagination continues from
-- the end of the previous results that returned the @nextToken@ value.
-- This value is @null@ when there are no more results to return.
--
-- Treat this token as an opaque identifier that\'s only used to retrieve
-- the next items in a list and not for other programmatic purposes.
describeJobDefinitions_nextToken :: Lens.Lens' DescribeJobDefinitions (Prelude.Maybe Prelude.Text)
describeJobDefinitions_nextToken = Lens.lens (\DescribeJobDefinitions' {nextToken} -> nextToken) (\s@DescribeJobDefinitions' {} a -> s {nextToken = a} :: DescribeJobDefinitions)

-- | The status used to filter job definitions.
describeJobDefinitions_status :: Lens.Lens' DescribeJobDefinitions (Prelude.Maybe Prelude.Text)
describeJobDefinitions_status = Lens.lens (\DescribeJobDefinitions' {status} -> status) (\s@DescribeJobDefinitions' {} a -> s {status = a} :: DescribeJobDefinitions)

instance Core.AWSPager DescribeJobDefinitions where
  page rq rs
    | Core.stop
        ( rs
            Lens.^? describeJobDefinitionsResponse_nextToken
            Prelude.. Lens._Just
        ) =
        Prelude.Nothing
    | Core.stop
        ( rs
            Lens.^? describeJobDefinitionsResponse_jobDefinitions
            Prelude.. Lens._Just
        ) =
        Prelude.Nothing
    | Prelude.otherwise =
        Prelude.Just
          Prelude.$ rq
          Prelude.& describeJobDefinitions_nextToken
          Lens..~ rs
          Lens.^? describeJobDefinitionsResponse_nextToken
          Prelude.. Lens._Just

instance Core.AWSRequest DescribeJobDefinitions where
  type
    AWSResponse DescribeJobDefinitions =
      DescribeJobDefinitionsResponse
  request overrides =
    Request.postJSON (overrides defaultService)
  response =
    Response.receiveJSON
      ( \s h x ->
          DescribeJobDefinitionsResponse'
            Prelude.<$> (x Data..?> "jobDefinitions" Core..!@ Prelude.mempty)
            Prelude.<*> (x Data..?> "nextToken")
            Prelude.<*> (Prelude.pure (Prelude.fromEnum s))
      )

instance Prelude.Hashable DescribeJobDefinitions where
  hashWithSalt _salt DescribeJobDefinitions' {..} =
    _salt
      `Prelude.hashWithSalt` jobDefinitionName
      `Prelude.hashWithSalt` jobDefinitions
      `Prelude.hashWithSalt` maxResults
      `Prelude.hashWithSalt` nextToken
      `Prelude.hashWithSalt` status

instance Prelude.NFData DescribeJobDefinitions where
  rnf DescribeJobDefinitions' {..} =
    Prelude.rnf jobDefinitionName
      `Prelude.seq` Prelude.rnf jobDefinitions
      `Prelude.seq` Prelude.rnf maxResults
      `Prelude.seq` Prelude.rnf nextToken
      `Prelude.seq` Prelude.rnf status

instance Data.ToHeaders DescribeJobDefinitions where
  toHeaders =
    Prelude.const
      ( Prelude.mconcat
          [ "Content-Type"
              Data.=# ( "application/x-amz-json-1.1" ::
                          Prelude.ByteString
                      )
          ]
      )

instance Data.ToJSON DescribeJobDefinitions where
  toJSON DescribeJobDefinitions' {..} =
    Data.object
      ( Prelude.catMaybes
          [ ("jobDefinitionName" Data..=)
              Prelude.<$> jobDefinitionName,
            ("jobDefinitions" Data..=)
              Prelude.<$> jobDefinitions,
            ("maxResults" Data..=) Prelude.<$> maxResults,
            ("nextToken" Data..=) Prelude.<$> nextToken,
            ("status" Data..=) Prelude.<$> status
          ]
      )

instance Data.ToPath DescribeJobDefinitions where
  toPath = Prelude.const "/v1/describejobdefinitions"

instance Data.ToQuery DescribeJobDefinitions where
  toQuery = Prelude.const Prelude.mempty

-- | /See:/ 'newDescribeJobDefinitionsResponse' smart constructor.
data DescribeJobDefinitionsResponse = DescribeJobDefinitionsResponse'
  { -- | The list of job definitions.
    jobDefinitions :: Prelude.Maybe [JobDefinition],
    -- | The @nextToken@ value to include in a future @DescribeJobDefinitions@
    -- request. When the results of a @DescribeJobDefinitions@ request exceed
    -- @maxResults@, this value can be used to retrieve the next page of
    -- results. This value is @null@ when there are no more results to return.
    nextToken :: 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 'DescribeJobDefinitionsResponse' 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:
--
-- 'jobDefinitions', 'describeJobDefinitionsResponse_jobDefinitions' - The list of job definitions.
--
-- 'nextToken', 'describeJobDefinitionsResponse_nextToken' - The @nextToken@ value to include in a future @DescribeJobDefinitions@
-- request. When the results of a @DescribeJobDefinitions@ request exceed
-- @maxResults@, this value can be used to retrieve the next page of
-- results. This value is @null@ when there are no more results to return.
--
-- 'httpStatus', 'describeJobDefinitionsResponse_httpStatus' - The response's http status code.
newDescribeJobDefinitionsResponse ::
  -- | 'httpStatus'
  Prelude.Int ->
  DescribeJobDefinitionsResponse
newDescribeJobDefinitionsResponse pHttpStatus_ =
  DescribeJobDefinitionsResponse'
    { jobDefinitions =
        Prelude.Nothing,
      nextToken = Prelude.Nothing,
      httpStatus = pHttpStatus_
    }

-- | The list of job definitions.
describeJobDefinitionsResponse_jobDefinitions :: Lens.Lens' DescribeJobDefinitionsResponse (Prelude.Maybe [JobDefinition])
describeJobDefinitionsResponse_jobDefinitions = Lens.lens (\DescribeJobDefinitionsResponse' {jobDefinitions} -> jobDefinitions) (\s@DescribeJobDefinitionsResponse' {} a -> s {jobDefinitions = a} :: DescribeJobDefinitionsResponse) Prelude.. Lens.mapping Lens.coerced

-- | The @nextToken@ value to include in a future @DescribeJobDefinitions@
-- request. When the results of a @DescribeJobDefinitions@ request exceed
-- @maxResults@, this value can be used to retrieve the next page of
-- results. This value is @null@ when there are no more results to return.
describeJobDefinitionsResponse_nextToken :: Lens.Lens' DescribeJobDefinitionsResponse (Prelude.Maybe Prelude.Text)
describeJobDefinitionsResponse_nextToken = Lens.lens (\DescribeJobDefinitionsResponse' {nextToken} -> nextToken) (\s@DescribeJobDefinitionsResponse' {} a -> s {nextToken = a} :: DescribeJobDefinitionsResponse)

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

instance
  Prelude.NFData
    DescribeJobDefinitionsResponse
  where
  rnf DescribeJobDefinitionsResponse' {..} =
    Prelude.rnf jobDefinitions
      `Prelude.seq` Prelude.rnf nextToken
      `Prelude.seq` Prelude.rnf httpStatus