{-# 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.ECRPublic.DescribeRegistries
-- 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 details for a public registry.
--
-- This operation returns paginated results.
module Amazonka.ECRPublic.DescribeRegistries
  ( -- * Creating a Request
    DescribeRegistries (..),
    newDescribeRegistries,

    -- * Request Lenses
    describeRegistries_maxResults,
    describeRegistries_nextToken,

    -- * Destructuring the Response
    DescribeRegistriesResponse (..),
    newDescribeRegistriesResponse,

    -- * Response Lenses
    describeRegistriesResponse_nextToken,
    describeRegistriesResponse_httpStatus,
    describeRegistriesResponse_registries,
  )
where

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

-- | /See:/ 'newDescribeRegistries' smart constructor.
data DescribeRegistries = DescribeRegistries'
  { -- | The maximum number of repository results returned by
    -- @DescribeRegistries@ in paginated output. When this parameter is used,
    -- @DescribeRegistries@ only returns @maxResults@ results in a single page
    -- along with a @nextToken@ response element. The remaining results of the
    -- initial request can be seen by sending another @DescribeRegistries@
    -- request with the returned @nextToken@ value. This value can be between 1
    -- and 1000. If this parameter is not used, then @DescribeRegistries@
    -- returns up to 100 results and a @nextToken@ value, if applicable.
    maxResults :: Prelude.Maybe Prelude.Natural,
    -- | The @nextToken@ value returned from a previous paginated
    -- @DescribeRegistries@ 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.
    --
    -- This token should be treated as an opaque identifier that is only used
    -- to retrieve the next items in a list and not for other programmatic
    -- purposes.
    nextToken :: Prelude.Maybe Prelude.Text
  }
  deriving (Prelude.Eq, Prelude.Read, Prelude.Show, Prelude.Generic)

-- |
-- Create a value of 'DescribeRegistries' 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:
--
-- 'maxResults', 'describeRegistries_maxResults' - The maximum number of repository results returned by
-- @DescribeRegistries@ in paginated output. When this parameter is used,
-- @DescribeRegistries@ only returns @maxResults@ results in a single page
-- along with a @nextToken@ response element. The remaining results of the
-- initial request can be seen by sending another @DescribeRegistries@
-- request with the returned @nextToken@ value. This value can be between 1
-- and 1000. If this parameter is not used, then @DescribeRegistries@
-- returns up to 100 results and a @nextToken@ value, if applicable.
--
-- 'nextToken', 'describeRegistries_nextToken' - The @nextToken@ value returned from a previous paginated
-- @DescribeRegistries@ 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.
--
-- This token should be treated as an opaque identifier that is only used
-- to retrieve the next items in a list and not for other programmatic
-- purposes.
newDescribeRegistries ::
  DescribeRegistries
newDescribeRegistries =
  DescribeRegistries'
    { maxResults = Prelude.Nothing,
      nextToken = Prelude.Nothing
    }

-- | The maximum number of repository results returned by
-- @DescribeRegistries@ in paginated output. When this parameter is used,
-- @DescribeRegistries@ only returns @maxResults@ results in a single page
-- along with a @nextToken@ response element. The remaining results of the
-- initial request can be seen by sending another @DescribeRegistries@
-- request with the returned @nextToken@ value. This value can be between 1
-- and 1000. If this parameter is not used, then @DescribeRegistries@
-- returns up to 100 results and a @nextToken@ value, if applicable.
describeRegistries_maxResults :: Lens.Lens' DescribeRegistries (Prelude.Maybe Prelude.Natural)
describeRegistries_maxResults = Lens.lens (\DescribeRegistries' {maxResults} -> maxResults) (\s@DescribeRegistries' {} a -> s {maxResults = a} :: DescribeRegistries)

-- | The @nextToken@ value returned from a previous paginated
-- @DescribeRegistries@ 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.
--
-- This token should be treated as an opaque identifier that is only used
-- to retrieve the next items in a list and not for other programmatic
-- purposes.
describeRegistries_nextToken :: Lens.Lens' DescribeRegistries (Prelude.Maybe Prelude.Text)
describeRegistries_nextToken = Lens.lens (\DescribeRegistries' {nextToken} -> nextToken) (\s@DescribeRegistries' {} a -> s {nextToken = a} :: DescribeRegistries)

instance Core.AWSPager DescribeRegistries where
  page rq rs
    | Core.stop
        ( rs
            Lens.^? describeRegistriesResponse_nextToken
            Prelude.. Lens._Just
        ) =
        Prelude.Nothing
    | Core.stop
        (rs Lens.^. describeRegistriesResponse_registries) =
        Prelude.Nothing
    | Prelude.otherwise =
        Prelude.Just
          Prelude.$ rq
          Prelude.& describeRegistries_nextToken
          Lens..~ rs
          Lens.^? describeRegistriesResponse_nextToken
          Prelude.. Lens._Just

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

instance Prelude.Hashable DescribeRegistries where
  hashWithSalt _salt DescribeRegistries' {..} =
    _salt
      `Prelude.hashWithSalt` maxResults
      `Prelude.hashWithSalt` nextToken

instance Prelude.NFData DescribeRegistries where
  rnf DescribeRegistries' {..} =
    Prelude.rnf maxResults
      `Prelude.seq` Prelude.rnf nextToken

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

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

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

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

-- | /See:/ 'newDescribeRegistriesResponse' smart constructor.
data DescribeRegistriesResponse = DescribeRegistriesResponse'
  { -- | The @nextToken@ value to include in a future @DescribeRepositories@
    -- request. When the results of a @DescribeRepositories@ 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,
    -- | An object containing the details for a public registry.
    registries :: [Registry]
  }
  deriving (Prelude.Eq, Prelude.Read, Prelude.Show, Prelude.Generic)

-- |
-- Create a value of 'DescribeRegistriesResponse' 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', 'describeRegistriesResponse_nextToken' - The @nextToken@ value to include in a future @DescribeRepositories@
-- request. When the results of a @DescribeRepositories@ 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', 'describeRegistriesResponse_httpStatus' - The response's http status code.
--
-- 'registries', 'describeRegistriesResponse_registries' - An object containing the details for a public registry.
newDescribeRegistriesResponse ::
  -- | 'httpStatus'
  Prelude.Int ->
  DescribeRegistriesResponse
newDescribeRegistriesResponse pHttpStatus_ =
  DescribeRegistriesResponse'
    { nextToken =
        Prelude.Nothing,
      httpStatus = pHttpStatus_,
      registries = Prelude.mempty
    }

-- | The @nextToken@ value to include in a future @DescribeRepositories@
-- request. When the results of a @DescribeRepositories@ 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.
describeRegistriesResponse_nextToken :: Lens.Lens' DescribeRegistriesResponse (Prelude.Maybe Prelude.Text)
describeRegistriesResponse_nextToken = Lens.lens (\DescribeRegistriesResponse' {nextToken} -> nextToken) (\s@DescribeRegistriesResponse' {} a -> s {nextToken = a} :: DescribeRegistriesResponse)

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

-- | An object containing the details for a public registry.
describeRegistriesResponse_registries :: Lens.Lens' DescribeRegistriesResponse [Registry]
describeRegistriesResponse_registries = Lens.lens (\DescribeRegistriesResponse' {registries} -> registries) (\s@DescribeRegistriesResponse' {} a -> s {registries = a} :: DescribeRegistriesResponse) Prelude.. Lens.coerced

instance Prelude.NFData DescribeRegistriesResponse where
  rnf DescribeRegistriesResponse' {..} =
    Prelude.rnf nextToken
      `Prelude.seq` Prelude.rnf httpStatus
      `Prelude.seq` Prelude.rnf registries