{-# 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.FSx.DescribeSnapshots
-- 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 description of specific Amazon FSx for OpenZFS snapshots, if
-- a @SnapshotIds@ value is provided. Otherwise, this operation returns all
-- snapshots owned by your Amazon Web Services account in the Amazon Web
-- Services Region of the endpoint that you\'re calling.
--
-- When retrieving all snapshots, you can optionally specify the
-- @MaxResults@ parameter to limit the number of snapshots in a response.
-- If more backups remain, Amazon FSx returns a @NextToken@ value in the
-- response. In this case, send a later request with the @NextToken@
-- request parameter set to the value of @NextToken@ from the last
-- response.
--
-- Use this operation in an iterative process to retrieve a list of your
-- snapshots. @DescribeSnapshots@ is called first without a @NextToken@
-- value. Then the operation continues to be called with the @NextToken@
-- parameter set to the value of the last @NextToken@ value until a
-- response has no @NextToken@ value.
--
-- When using this operation, keep the following in mind:
--
-- -   The operation might return fewer than the @MaxResults@ value of
--     snapshot descriptions while still including a @NextToken@ value.
--
-- -   The order of snapshots returned in the response of one
--     @DescribeSnapshots@ call and the order of backups returned across
--     the responses of a multi-call iteration is unspecified.
module Amazonka.FSx.DescribeSnapshots
  ( -- * Creating a Request
    DescribeSnapshots (..),
    newDescribeSnapshots,

    -- * Request Lenses
    describeSnapshots_filters,
    describeSnapshots_maxResults,
    describeSnapshots_nextToken,
    describeSnapshots_snapshotIds,

    -- * Destructuring the Response
    DescribeSnapshotsResponse (..),
    newDescribeSnapshotsResponse,

    -- * Response Lenses
    describeSnapshotsResponse_nextToken,
    describeSnapshotsResponse_snapshots,
    describeSnapshotsResponse_httpStatus,
  )
where

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

-- | /See:/ 'newDescribeSnapshots' smart constructor.
data DescribeSnapshots = DescribeSnapshots'
  { -- | The filters structure. The supported names are @file-system-id@ or
    -- @volume-id@.
    filters :: Prelude.Maybe [SnapshotFilter],
    maxResults :: Prelude.Maybe Prelude.Natural,
    nextToken :: Prelude.Maybe Prelude.Text,
    -- | The IDs of the snapshots that you want to retrieve. This parameter value
    -- overrides any filters. If any IDs aren\'t found, a @SnapshotNotFound@
    -- error occurs.
    snapshotIds :: Prelude.Maybe [Prelude.Text]
  }
  deriving (Prelude.Eq, Prelude.Read, Prelude.Show, Prelude.Generic)

-- |
-- Create a value of 'DescribeSnapshots' 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:
--
-- 'filters', 'describeSnapshots_filters' - The filters structure. The supported names are @file-system-id@ or
-- @volume-id@.
--
-- 'maxResults', 'describeSnapshots_maxResults' - Undocumented member.
--
-- 'nextToken', 'describeSnapshots_nextToken' - Undocumented member.
--
-- 'snapshotIds', 'describeSnapshots_snapshotIds' - The IDs of the snapshots that you want to retrieve. This parameter value
-- overrides any filters. If any IDs aren\'t found, a @SnapshotNotFound@
-- error occurs.
newDescribeSnapshots ::
  DescribeSnapshots
newDescribeSnapshots =
  DescribeSnapshots'
    { filters = Prelude.Nothing,
      maxResults = Prelude.Nothing,
      nextToken = Prelude.Nothing,
      snapshotIds = Prelude.Nothing
    }

-- | The filters structure. The supported names are @file-system-id@ or
-- @volume-id@.
describeSnapshots_filters :: Lens.Lens' DescribeSnapshots (Prelude.Maybe [SnapshotFilter])
describeSnapshots_filters = Lens.lens (\DescribeSnapshots' {filters} -> filters) (\s@DescribeSnapshots' {} a -> s {filters = a} :: DescribeSnapshots) Prelude.. Lens.mapping Lens.coerced

-- | Undocumented member.
describeSnapshots_maxResults :: Lens.Lens' DescribeSnapshots (Prelude.Maybe Prelude.Natural)
describeSnapshots_maxResults = Lens.lens (\DescribeSnapshots' {maxResults} -> maxResults) (\s@DescribeSnapshots' {} a -> s {maxResults = a} :: DescribeSnapshots)

-- | Undocumented member.
describeSnapshots_nextToken :: Lens.Lens' DescribeSnapshots (Prelude.Maybe Prelude.Text)
describeSnapshots_nextToken = Lens.lens (\DescribeSnapshots' {nextToken} -> nextToken) (\s@DescribeSnapshots' {} a -> s {nextToken = a} :: DescribeSnapshots)

-- | The IDs of the snapshots that you want to retrieve. This parameter value
-- overrides any filters. If any IDs aren\'t found, a @SnapshotNotFound@
-- error occurs.
describeSnapshots_snapshotIds :: Lens.Lens' DescribeSnapshots (Prelude.Maybe [Prelude.Text])
describeSnapshots_snapshotIds = Lens.lens (\DescribeSnapshots' {snapshotIds} -> snapshotIds) (\s@DescribeSnapshots' {} a -> s {snapshotIds = a} :: DescribeSnapshots) Prelude.. Lens.mapping Lens.coerced

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

instance Prelude.Hashable DescribeSnapshots where
  hashWithSalt _salt DescribeSnapshots' {..} =
    _salt
      `Prelude.hashWithSalt` filters
      `Prelude.hashWithSalt` maxResults
      `Prelude.hashWithSalt` nextToken
      `Prelude.hashWithSalt` snapshotIds

instance Prelude.NFData DescribeSnapshots where
  rnf DescribeSnapshots' {..} =
    Prelude.rnf filters
      `Prelude.seq` Prelude.rnf maxResults
      `Prelude.seq` Prelude.rnf nextToken
      `Prelude.seq` Prelude.rnf snapshotIds

instance Data.ToHeaders DescribeSnapshots where
  toHeaders =
    Prelude.const
      ( Prelude.mconcat
          [ "X-Amz-Target"
              Data.=# ( "AWSSimbaAPIService_v20180301.DescribeSnapshots" ::
                          Prelude.ByteString
                      ),
            "Content-Type"
              Data.=# ( "application/x-amz-json-1.1" ::
                          Prelude.ByteString
                      )
          ]
      )

instance Data.ToJSON DescribeSnapshots where
  toJSON DescribeSnapshots' {..} =
    Data.object
      ( Prelude.catMaybes
          [ ("Filters" Data..=) Prelude.<$> filters,
            ("MaxResults" Data..=) Prelude.<$> maxResults,
            ("NextToken" Data..=) Prelude.<$> nextToken,
            ("SnapshotIds" Data..=) Prelude.<$> snapshotIds
          ]
      )

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

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

-- | /See:/ 'newDescribeSnapshotsResponse' smart constructor.
data DescribeSnapshotsResponse = DescribeSnapshotsResponse'
  { nextToken :: Prelude.Maybe Prelude.Text,
    -- | An array of snapshots.
    snapshots :: Prelude.Maybe [Snapshot],
    -- | The response's http status code.
    httpStatus :: Prelude.Int
  }
  deriving (Prelude.Eq, Prelude.Read, Prelude.Show, Prelude.Generic)

-- |
-- Create a value of 'DescribeSnapshotsResponse' 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', 'describeSnapshotsResponse_nextToken' - Undocumented member.
--
-- 'snapshots', 'describeSnapshotsResponse_snapshots' - An array of snapshots.
--
-- 'httpStatus', 'describeSnapshotsResponse_httpStatus' - The response's http status code.
newDescribeSnapshotsResponse ::
  -- | 'httpStatus'
  Prelude.Int ->
  DescribeSnapshotsResponse
newDescribeSnapshotsResponse pHttpStatus_ =
  DescribeSnapshotsResponse'
    { nextToken =
        Prelude.Nothing,
      snapshots = Prelude.Nothing,
      httpStatus = pHttpStatus_
    }

-- | Undocumented member.
describeSnapshotsResponse_nextToken :: Lens.Lens' DescribeSnapshotsResponse (Prelude.Maybe Prelude.Text)
describeSnapshotsResponse_nextToken = Lens.lens (\DescribeSnapshotsResponse' {nextToken} -> nextToken) (\s@DescribeSnapshotsResponse' {} a -> s {nextToken = a} :: DescribeSnapshotsResponse)

-- | An array of snapshots.
describeSnapshotsResponse_snapshots :: Lens.Lens' DescribeSnapshotsResponse (Prelude.Maybe [Snapshot])
describeSnapshotsResponse_snapshots = Lens.lens (\DescribeSnapshotsResponse' {snapshots} -> snapshots) (\s@DescribeSnapshotsResponse' {} a -> s {snapshots = a} :: DescribeSnapshotsResponse) Prelude.. Lens.mapping Lens.coerced

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

instance Prelude.NFData DescribeSnapshotsResponse where
  rnf DescribeSnapshotsResponse' {..} =
    Prelude.rnf nextToken
      `Prelude.seq` Prelude.rnf snapshots
      `Prelude.seq` Prelude.rnf httpStatus