{-# 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.Discovery.DescribeAgents
-- Copyright   : (c) 2013-2023 Brendan Hay
-- License     : Mozilla Public License, v. 2.0.
-- Maintainer  : Brendan Hay
-- Stability   : auto-generated
-- Portability : non-portable (GHC extensions)
--
-- Lists agents or connectors as specified by ID or other filters. All
-- agents\/connectors associated with your user account can be listed if
-- you call @DescribeAgents@ as is without passing any parameters.
--
-- This operation returns paginated results.
module Amazonka.Discovery.DescribeAgents
  ( -- * Creating a Request
    DescribeAgents (..),
    newDescribeAgents,

    -- * Request Lenses
    describeAgents_agentIds,
    describeAgents_filters,
    describeAgents_maxResults,
    describeAgents_nextToken,

    -- * Destructuring the Response
    DescribeAgentsResponse (..),
    newDescribeAgentsResponse,

    -- * Response Lenses
    describeAgentsResponse_agentsInfo,
    describeAgentsResponse_nextToken,
    describeAgentsResponse_httpStatus,
  )
where

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

-- | /See:/ 'newDescribeAgents' smart constructor.
data DescribeAgents = DescribeAgents'
  { -- | The agent or the Connector IDs for which you want information. If you
    -- specify no IDs, the system returns information about all
    -- agents\/Connectors associated with your Amazon Web Services user
    -- account.
    agentIds :: Prelude.Maybe [Prelude.Text],
    -- | You can filter the request using various logical operators and a
    -- /key/-/value/ format. For example:
    --
    -- @{\"key\": \"collectionStatus\", \"value\": \"STARTED\"}@
    filters :: Prelude.Maybe [Filter],
    -- | The total number of agents\/Connectors to return in a single page of
    -- output. The maximum value is 100.
    maxResults :: Prelude.Maybe Prelude.Int,
    -- | Token to retrieve the next set of results. For example, if you
    -- previously specified 100 IDs for @DescribeAgentsRequest$agentIds@ but
    -- set @DescribeAgentsRequest$maxResults@ to 10, you received a set of 10
    -- results along with a token. Use that token in this query to get the next
    -- set of 10.
    nextToken :: Prelude.Maybe Prelude.Text
  }
  deriving (Prelude.Eq, Prelude.Read, Prelude.Show, Prelude.Generic)

-- |
-- Create a value of 'DescribeAgents' 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:
--
-- 'agentIds', 'describeAgents_agentIds' - The agent or the Connector IDs for which you want information. If you
-- specify no IDs, the system returns information about all
-- agents\/Connectors associated with your Amazon Web Services user
-- account.
--
-- 'filters', 'describeAgents_filters' - You can filter the request using various logical operators and a
-- /key/-/value/ format. For example:
--
-- @{\"key\": \"collectionStatus\", \"value\": \"STARTED\"}@
--
-- 'maxResults', 'describeAgents_maxResults' - The total number of agents\/Connectors to return in a single page of
-- output. The maximum value is 100.
--
-- 'nextToken', 'describeAgents_nextToken' - Token to retrieve the next set of results. For example, if you
-- previously specified 100 IDs for @DescribeAgentsRequest$agentIds@ but
-- set @DescribeAgentsRequest$maxResults@ to 10, you received a set of 10
-- results along with a token. Use that token in this query to get the next
-- set of 10.
newDescribeAgents ::
  DescribeAgents
newDescribeAgents =
  DescribeAgents'
    { agentIds = Prelude.Nothing,
      filters = Prelude.Nothing,
      maxResults = Prelude.Nothing,
      nextToken = Prelude.Nothing
    }

-- | The agent or the Connector IDs for which you want information. If you
-- specify no IDs, the system returns information about all
-- agents\/Connectors associated with your Amazon Web Services user
-- account.
describeAgents_agentIds :: Lens.Lens' DescribeAgents (Prelude.Maybe [Prelude.Text])
describeAgents_agentIds = Lens.lens (\DescribeAgents' {agentIds} -> agentIds) (\s@DescribeAgents' {} a -> s {agentIds = a} :: DescribeAgents) Prelude.. Lens.mapping Lens.coerced

-- | You can filter the request using various logical operators and a
-- /key/-/value/ format. For example:
--
-- @{\"key\": \"collectionStatus\", \"value\": \"STARTED\"}@
describeAgents_filters :: Lens.Lens' DescribeAgents (Prelude.Maybe [Filter])
describeAgents_filters = Lens.lens (\DescribeAgents' {filters} -> filters) (\s@DescribeAgents' {} a -> s {filters = a} :: DescribeAgents) Prelude.. Lens.mapping Lens.coerced

-- | The total number of agents\/Connectors to return in a single page of
-- output. The maximum value is 100.
describeAgents_maxResults :: Lens.Lens' DescribeAgents (Prelude.Maybe Prelude.Int)
describeAgents_maxResults = Lens.lens (\DescribeAgents' {maxResults} -> maxResults) (\s@DescribeAgents' {} a -> s {maxResults = a} :: DescribeAgents)

-- | Token to retrieve the next set of results. For example, if you
-- previously specified 100 IDs for @DescribeAgentsRequest$agentIds@ but
-- set @DescribeAgentsRequest$maxResults@ to 10, you received a set of 10
-- results along with a token. Use that token in this query to get the next
-- set of 10.
describeAgents_nextToken :: Lens.Lens' DescribeAgents (Prelude.Maybe Prelude.Text)
describeAgents_nextToken = Lens.lens (\DescribeAgents' {nextToken} -> nextToken) (\s@DescribeAgents' {} a -> s {nextToken = a} :: DescribeAgents)

instance Core.AWSPager DescribeAgents where
  page rq rs
    | Core.stop
        ( rs
            Lens.^? describeAgentsResponse_nextToken
            Prelude.. Lens._Just
        ) =
        Prelude.Nothing
    | Core.stop
        ( rs
            Lens.^? describeAgentsResponse_agentsInfo
            Prelude.. Lens._Just
        ) =
        Prelude.Nothing
    | Prelude.otherwise =
        Prelude.Just
          Prelude.$ rq
          Prelude.& describeAgents_nextToken
          Lens..~ rs
          Lens.^? describeAgentsResponse_nextToken
          Prelude.. Lens._Just

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

instance Prelude.Hashable DescribeAgents where
  hashWithSalt _salt DescribeAgents' {..} =
    _salt
      `Prelude.hashWithSalt` agentIds
      `Prelude.hashWithSalt` filters
      `Prelude.hashWithSalt` maxResults
      `Prelude.hashWithSalt` nextToken

instance Prelude.NFData DescribeAgents where
  rnf DescribeAgents' {..} =
    Prelude.rnf agentIds
      `Prelude.seq` Prelude.rnf filters
      `Prelude.seq` Prelude.rnf maxResults
      `Prelude.seq` Prelude.rnf nextToken

instance Data.ToHeaders DescribeAgents where
  toHeaders =
    Prelude.const
      ( Prelude.mconcat
          [ "X-Amz-Target"
              Data.=# ( "AWSPoseidonService_V2015_11_01.DescribeAgents" ::
                          Prelude.ByteString
                      ),
            "Content-Type"
              Data.=# ( "application/x-amz-json-1.1" ::
                          Prelude.ByteString
                      )
          ]
      )

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

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

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

-- | /See:/ 'newDescribeAgentsResponse' smart constructor.
data DescribeAgentsResponse = DescribeAgentsResponse'
  { -- | Lists agents or the Connector by ID or lists all agents\/Connectors
    -- associated with your user account if you did not specify an
    -- agent\/Connector ID. The output includes agent\/Connector IDs, IP
    -- addresses, media access control (MAC) addresses, agent\/Connector
    -- health, host name where the agent\/Connector resides, and the version
    -- number of each agent\/Connector.
    agentsInfo :: Prelude.Maybe [AgentInfo],
    -- | Token to retrieve the next set of results. For example, if you specified
    -- 100 IDs for @DescribeAgentsRequest$agentIds@ but set
    -- @DescribeAgentsRequest$maxResults@ to 10, you received a set of 10
    -- results along with this token. Use this token in the next query to
    -- retrieve the next set of 10.
    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 'DescribeAgentsResponse' 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:
--
-- 'agentsInfo', 'describeAgentsResponse_agentsInfo' - Lists agents or the Connector by ID or lists all agents\/Connectors
-- associated with your user account if you did not specify an
-- agent\/Connector ID. The output includes agent\/Connector IDs, IP
-- addresses, media access control (MAC) addresses, agent\/Connector
-- health, host name where the agent\/Connector resides, and the version
-- number of each agent\/Connector.
--
-- 'nextToken', 'describeAgentsResponse_nextToken' - Token to retrieve the next set of results. For example, if you specified
-- 100 IDs for @DescribeAgentsRequest$agentIds@ but set
-- @DescribeAgentsRequest$maxResults@ to 10, you received a set of 10
-- results along with this token. Use this token in the next query to
-- retrieve the next set of 10.
--
-- 'httpStatus', 'describeAgentsResponse_httpStatus' - The response's http status code.
newDescribeAgentsResponse ::
  -- | 'httpStatus'
  Prelude.Int ->
  DescribeAgentsResponse
newDescribeAgentsResponse pHttpStatus_ =
  DescribeAgentsResponse'
    { agentsInfo =
        Prelude.Nothing,
      nextToken = Prelude.Nothing,
      httpStatus = pHttpStatus_
    }

-- | Lists agents or the Connector by ID or lists all agents\/Connectors
-- associated with your user account if you did not specify an
-- agent\/Connector ID. The output includes agent\/Connector IDs, IP
-- addresses, media access control (MAC) addresses, agent\/Connector
-- health, host name where the agent\/Connector resides, and the version
-- number of each agent\/Connector.
describeAgentsResponse_agentsInfo :: Lens.Lens' DescribeAgentsResponse (Prelude.Maybe [AgentInfo])
describeAgentsResponse_agentsInfo = Lens.lens (\DescribeAgentsResponse' {agentsInfo} -> agentsInfo) (\s@DescribeAgentsResponse' {} a -> s {agentsInfo = a} :: DescribeAgentsResponse) Prelude.. Lens.mapping Lens.coerced

-- | Token to retrieve the next set of results. For example, if you specified
-- 100 IDs for @DescribeAgentsRequest$agentIds@ but set
-- @DescribeAgentsRequest$maxResults@ to 10, you received a set of 10
-- results along with this token. Use this token in the next query to
-- retrieve the next set of 10.
describeAgentsResponse_nextToken :: Lens.Lens' DescribeAgentsResponse (Prelude.Maybe Prelude.Text)
describeAgentsResponse_nextToken = Lens.lens (\DescribeAgentsResponse' {nextToken} -> nextToken) (\s@DescribeAgentsResponse' {} a -> s {nextToken = a} :: DescribeAgentsResponse)

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

instance Prelude.NFData DescribeAgentsResponse where
  rnf DescribeAgentsResponse' {..} =
    Prelude.rnf agentsInfo
      `Prelude.seq` Prelude.rnf nextToken
      `Prelude.seq` Prelude.rnf httpStatus