{-# 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.CodeCommit.ListPullRequests
-- 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 a list of pull requests for a specified repository. The return
-- list can be refined by pull request status or pull request author ARN.
--
-- This operation returns paginated results.
module Amazonka.CodeCommit.ListPullRequests
  ( -- * Creating a Request
    ListPullRequests (..),
    newListPullRequests,

    -- * Request Lenses
    listPullRequests_authorArn,
    listPullRequests_maxResults,
    listPullRequests_nextToken,
    listPullRequests_pullRequestStatus,
    listPullRequests_repositoryName,

    -- * Destructuring the Response
    ListPullRequestsResponse (..),
    newListPullRequestsResponse,

    -- * Response Lenses
    listPullRequestsResponse_nextToken,
    listPullRequestsResponse_httpStatus,
    listPullRequestsResponse_pullRequestIds,
  )
where

import Amazonka.CodeCommit.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

-- | /See:/ 'newListPullRequests' smart constructor.
data ListPullRequests = ListPullRequests'
  { -- | Optional. The Amazon Resource Name (ARN) of the user who created the
    -- pull request. If used, this filters the results to pull requests created
    -- by that user.
    authorArn :: Prelude.Maybe Prelude.Text,
    -- | A non-zero, non-negative integer used to limit the number of returned
    -- results.
    maxResults :: Prelude.Maybe Prelude.Int,
    -- | An enumeration token that, when provided in a request, returns the next
    -- batch of the results.
    nextToken :: Prelude.Maybe Prelude.Text,
    -- | Optional. The status of the pull request. If used, this refines the
    -- results to the pull requests that match the specified status.
    pullRequestStatus :: Prelude.Maybe PullRequestStatusEnum,
    -- | The name of the repository for which you want to list pull requests.
    repositoryName :: Prelude.Text
  }
  deriving (Prelude.Eq, Prelude.Read, Prelude.Show, Prelude.Generic)

-- |
-- Create a value of 'ListPullRequests' 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:
--
-- 'authorArn', 'listPullRequests_authorArn' - Optional. The Amazon Resource Name (ARN) of the user who created the
-- pull request. If used, this filters the results to pull requests created
-- by that user.
--
-- 'maxResults', 'listPullRequests_maxResults' - A non-zero, non-negative integer used to limit the number of returned
-- results.
--
-- 'nextToken', 'listPullRequests_nextToken' - An enumeration token that, when provided in a request, returns the next
-- batch of the results.
--
-- 'pullRequestStatus', 'listPullRequests_pullRequestStatus' - Optional. The status of the pull request. If used, this refines the
-- results to the pull requests that match the specified status.
--
-- 'repositoryName', 'listPullRequests_repositoryName' - The name of the repository for which you want to list pull requests.
newListPullRequests ::
  -- | 'repositoryName'
  Prelude.Text ->
  ListPullRequests
newListPullRequests pRepositoryName_ =
  ListPullRequests'
    { authorArn = Prelude.Nothing,
      maxResults = Prelude.Nothing,
      nextToken = Prelude.Nothing,
      pullRequestStatus = Prelude.Nothing,
      repositoryName = pRepositoryName_
    }

-- | Optional. The Amazon Resource Name (ARN) of the user who created the
-- pull request. If used, this filters the results to pull requests created
-- by that user.
listPullRequests_authorArn :: Lens.Lens' ListPullRequests (Prelude.Maybe Prelude.Text)
listPullRequests_authorArn = Lens.lens (\ListPullRequests' {authorArn} -> authorArn) (\s@ListPullRequests' {} a -> s {authorArn = a} :: ListPullRequests)

-- | A non-zero, non-negative integer used to limit the number of returned
-- results.
listPullRequests_maxResults :: Lens.Lens' ListPullRequests (Prelude.Maybe Prelude.Int)
listPullRequests_maxResults = Lens.lens (\ListPullRequests' {maxResults} -> maxResults) (\s@ListPullRequests' {} a -> s {maxResults = a} :: ListPullRequests)

-- | An enumeration token that, when provided in a request, returns the next
-- batch of the results.
listPullRequests_nextToken :: Lens.Lens' ListPullRequests (Prelude.Maybe Prelude.Text)
listPullRequests_nextToken = Lens.lens (\ListPullRequests' {nextToken} -> nextToken) (\s@ListPullRequests' {} a -> s {nextToken = a} :: ListPullRequests)

-- | Optional. The status of the pull request. If used, this refines the
-- results to the pull requests that match the specified status.
listPullRequests_pullRequestStatus :: Lens.Lens' ListPullRequests (Prelude.Maybe PullRequestStatusEnum)
listPullRequests_pullRequestStatus = Lens.lens (\ListPullRequests' {pullRequestStatus} -> pullRequestStatus) (\s@ListPullRequests' {} a -> s {pullRequestStatus = a} :: ListPullRequests)

-- | The name of the repository for which you want to list pull requests.
listPullRequests_repositoryName :: Lens.Lens' ListPullRequests Prelude.Text
listPullRequests_repositoryName = Lens.lens (\ListPullRequests' {repositoryName} -> repositoryName) (\s@ListPullRequests' {} a -> s {repositoryName = a} :: ListPullRequests)

instance Core.AWSPager ListPullRequests where
  page rq rs
    | Core.stop
        ( rs
            Lens.^? listPullRequestsResponse_nextToken
            Prelude.. Lens._Just
        ) =
        Prelude.Nothing
    | Core.stop
        (rs Lens.^. listPullRequestsResponse_pullRequestIds) =
        Prelude.Nothing
    | Prelude.otherwise =
        Prelude.Just
          Prelude.$ rq
          Prelude.& listPullRequests_nextToken
          Lens..~ rs
          Lens.^? listPullRequestsResponse_nextToken
          Prelude.. Lens._Just

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

instance Prelude.Hashable ListPullRequests where
  hashWithSalt _salt ListPullRequests' {..} =
    _salt
      `Prelude.hashWithSalt` authorArn
      `Prelude.hashWithSalt` maxResults
      `Prelude.hashWithSalt` nextToken
      `Prelude.hashWithSalt` pullRequestStatus
      `Prelude.hashWithSalt` repositoryName

instance Prelude.NFData ListPullRequests where
  rnf ListPullRequests' {..} =
    Prelude.rnf authorArn
      `Prelude.seq` Prelude.rnf maxResults
      `Prelude.seq` Prelude.rnf nextToken
      `Prelude.seq` Prelude.rnf pullRequestStatus
      `Prelude.seq` Prelude.rnf repositoryName

instance Data.ToHeaders ListPullRequests where
  toHeaders =
    Prelude.const
      ( Prelude.mconcat
          [ "X-Amz-Target"
              Data.=# ( "CodeCommit_20150413.ListPullRequests" ::
                          Prelude.ByteString
                      ),
            "Content-Type"
              Data.=# ( "application/x-amz-json-1.1" ::
                          Prelude.ByteString
                      )
          ]
      )

instance Data.ToJSON ListPullRequests where
  toJSON ListPullRequests' {..} =
    Data.object
      ( Prelude.catMaybes
          [ ("authorArn" Data..=) Prelude.<$> authorArn,
            ("maxResults" Data..=) Prelude.<$> maxResults,
            ("nextToken" Data..=) Prelude.<$> nextToken,
            ("pullRequestStatus" Data..=)
              Prelude.<$> pullRequestStatus,
            Prelude.Just
              ("repositoryName" Data..= repositoryName)
          ]
      )

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

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

-- | /See:/ 'newListPullRequestsResponse' smart constructor.
data ListPullRequestsResponse = ListPullRequestsResponse'
  { -- | An enumeration token that allows the operation to batch the next results
    -- of the operation.
    nextToken :: Prelude.Maybe Prelude.Text,
    -- | The response's http status code.
    httpStatus :: Prelude.Int,
    -- | The system-generated IDs of the pull requests.
    pullRequestIds :: [Prelude.Text]
  }
  deriving (Prelude.Eq, Prelude.Read, Prelude.Show, Prelude.Generic)

-- |
-- Create a value of 'ListPullRequestsResponse' 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:
--
-- 'nextToken', 'listPullRequestsResponse_nextToken' - An enumeration token that allows the operation to batch the next results
-- of the operation.
--
-- 'httpStatus', 'listPullRequestsResponse_httpStatus' - The response's http status code.
--
-- 'pullRequestIds', 'listPullRequestsResponse_pullRequestIds' - The system-generated IDs of the pull requests.
newListPullRequestsResponse ::
  -- | 'httpStatus'
  Prelude.Int ->
  ListPullRequestsResponse
newListPullRequestsResponse pHttpStatus_ =
  ListPullRequestsResponse'
    { nextToken =
        Prelude.Nothing,
      httpStatus = pHttpStatus_,
      pullRequestIds = Prelude.mempty
    }

-- | An enumeration token that allows the operation to batch the next results
-- of the operation.
listPullRequestsResponse_nextToken :: Lens.Lens' ListPullRequestsResponse (Prelude.Maybe Prelude.Text)
listPullRequestsResponse_nextToken = Lens.lens (\ListPullRequestsResponse' {nextToken} -> nextToken) (\s@ListPullRequestsResponse' {} a -> s {nextToken = a} :: ListPullRequestsResponse)

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

-- | The system-generated IDs of the pull requests.
listPullRequestsResponse_pullRequestIds :: Lens.Lens' ListPullRequestsResponse [Prelude.Text]
listPullRequestsResponse_pullRequestIds = Lens.lens (\ListPullRequestsResponse' {pullRequestIds} -> pullRequestIds) (\s@ListPullRequestsResponse' {} a -> s {pullRequestIds = a} :: ListPullRequestsResponse) Prelude.. Lens.coerced

instance Prelude.NFData ListPullRequestsResponse where
  rnf ListPullRequestsResponse' {..} =
    Prelude.rnf nextToken
      `Prelude.seq` Prelude.rnf httpStatus
      `Prelude.seq` Prelude.rnf pullRequestIds