{-# 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.NetworkFirewall.ListRuleGroups
-- Copyright   : (c) 2013-2023 Brendan Hay
-- License     : Mozilla Public License, v. 2.0.
-- Maintainer  : Brendan Hay
-- Stability   : auto-generated
-- Portability : non-portable (GHC extensions)
--
-- Retrieves the metadata for the rule groups that you have defined.
-- Depending on your setting for max results and the number of rule groups,
-- a single call might not return the full list.
--
-- This operation returns paginated results.
module Amazonka.NetworkFirewall.ListRuleGroups
  ( -- * Creating a Request
    ListRuleGroups (..),
    newListRuleGroups,

    -- * Request Lenses
    listRuleGroups_managedType,
    listRuleGroups_maxResults,
    listRuleGroups_nextToken,
    listRuleGroups_scope,
    listRuleGroups_type,

    -- * Destructuring the Response
    ListRuleGroupsResponse (..),
    newListRuleGroupsResponse,

    -- * Response Lenses
    listRuleGroupsResponse_nextToken,
    listRuleGroupsResponse_ruleGroups,
    listRuleGroupsResponse_httpStatus,
  )
where

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

-- | /See:/ 'newListRuleGroups' smart constructor.
data ListRuleGroups = ListRuleGroups'
  { -- | Indicates the general category of the Amazon Web Services managed rule
    -- group.
    managedType :: Prelude.Maybe ResourceManagedType,
    -- | The maximum number of objects that you want Network Firewall to return
    -- for this request. If more objects are available, in the response,
    -- Network Firewall provides a @NextToken@ value that you can use in a
    -- subsequent call to get the next batch of objects.
    maxResults :: Prelude.Maybe Prelude.Natural,
    -- | When you request a list of objects with a @MaxResults@ setting, if the
    -- number of objects that are still available for retrieval exceeds the
    -- maximum you requested, Network Firewall returns a @NextToken@ value in
    -- the response. To retrieve the next batch of objects, use the token
    -- returned from the prior request in your next request.
    nextToken :: Prelude.Maybe Prelude.Text,
    -- | The scope of the request. The default setting of @ACCOUNT@ or a setting
    -- of @NULL@ returns all of the rule groups in your account. A setting of
    -- @MANAGED@ returns all available managed rule groups.
    scope :: Prelude.Maybe ResourceManagedStatus,
    -- | Indicates whether the rule group is stateless or stateful. If the rule
    -- group is stateless, it contains stateless rules. If it is stateful, it
    -- contains stateful rules.
    type' :: Prelude.Maybe RuleGroupType
  }
  deriving (Prelude.Eq, Prelude.Read, Prelude.Show, Prelude.Generic)

-- |
-- Create a value of 'ListRuleGroups' 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:
--
-- 'managedType', 'listRuleGroups_managedType' - Indicates the general category of the Amazon Web Services managed rule
-- group.
--
-- 'maxResults', 'listRuleGroups_maxResults' - The maximum number of objects that you want Network Firewall to return
-- for this request. If more objects are available, in the response,
-- Network Firewall provides a @NextToken@ value that you can use in a
-- subsequent call to get the next batch of objects.
--
-- 'nextToken', 'listRuleGroups_nextToken' - When you request a list of objects with a @MaxResults@ setting, if the
-- number of objects that are still available for retrieval exceeds the
-- maximum you requested, Network Firewall returns a @NextToken@ value in
-- the response. To retrieve the next batch of objects, use the token
-- returned from the prior request in your next request.
--
-- 'scope', 'listRuleGroups_scope' - The scope of the request. The default setting of @ACCOUNT@ or a setting
-- of @NULL@ returns all of the rule groups in your account. A setting of
-- @MANAGED@ returns all available managed rule groups.
--
-- 'type'', 'listRuleGroups_type' - Indicates whether the rule group is stateless or stateful. If the rule
-- group is stateless, it contains stateless rules. If it is stateful, it
-- contains stateful rules.
newListRuleGroups ::
  ListRuleGroups
newListRuleGroups =
  ListRuleGroups'
    { managedType = Prelude.Nothing,
      maxResults = Prelude.Nothing,
      nextToken = Prelude.Nothing,
      scope = Prelude.Nothing,
      type' = Prelude.Nothing
    }

-- | Indicates the general category of the Amazon Web Services managed rule
-- group.
listRuleGroups_managedType :: Lens.Lens' ListRuleGroups (Prelude.Maybe ResourceManagedType)
listRuleGroups_managedType = Lens.lens (\ListRuleGroups' {managedType} -> managedType) (\s@ListRuleGroups' {} a -> s {managedType = a} :: ListRuleGroups)

-- | The maximum number of objects that you want Network Firewall to return
-- for this request. If more objects are available, in the response,
-- Network Firewall provides a @NextToken@ value that you can use in a
-- subsequent call to get the next batch of objects.
listRuleGroups_maxResults :: Lens.Lens' ListRuleGroups (Prelude.Maybe Prelude.Natural)
listRuleGroups_maxResults = Lens.lens (\ListRuleGroups' {maxResults} -> maxResults) (\s@ListRuleGroups' {} a -> s {maxResults = a} :: ListRuleGroups)

-- | When you request a list of objects with a @MaxResults@ setting, if the
-- number of objects that are still available for retrieval exceeds the
-- maximum you requested, Network Firewall returns a @NextToken@ value in
-- the response. To retrieve the next batch of objects, use the token
-- returned from the prior request in your next request.
listRuleGroups_nextToken :: Lens.Lens' ListRuleGroups (Prelude.Maybe Prelude.Text)
listRuleGroups_nextToken = Lens.lens (\ListRuleGroups' {nextToken} -> nextToken) (\s@ListRuleGroups' {} a -> s {nextToken = a} :: ListRuleGroups)

-- | The scope of the request. The default setting of @ACCOUNT@ or a setting
-- of @NULL@ returns all of the rule groups in your account. A setting of
-- @MANAGED@ returns all available managed rule groups.
listRuleGroups_scope :: Lens.Lens' ListRuleGroups (Prelude.Maybe ResourceManagedStatus)
listRuleGroups_scope = Lens.lens (\ListRuleGroups' {scope} -> scope) (\s@ListRuleGroups' {} a -> s {scope = a} :: ListRuleGroups)

-- | Indicates whether the rule group is stateless or stateful. If the rule
-- group is stateless, it contains stateless rules. If it is stateful, it
-- contains stateful rules.
listRuleGroups_type :: Lens.Lens' ListRuleGroups (Prelude.Maybe RuleGroupType)
listRuleGroups_type = Lens.lens (\ListRuleGroups' {type'} -> type') (\s@ListRuleGroups' {} a -> s {type' = a} :: ListRuleGroups)

instance Core.AWSPager ListRuleGroups where
  page rq rs
    | Core.stop
        ( rs
            Lens.^? listRuleGroupsResponse_nextToken
            Prelude.. Lens._Just
        ) =
        Prelude.Nothing
    | Core.stop
        ( rs
            Lens.^? listRuleGroupsResponse_ruleGroups
            Prelude.. Lens._Just
        ) =
        Prelude.Nothing
    | Prelude.otherwise =
        Prelude.Just
          Prelude.$ rq
          Prelude.& listRuleGroups_nextToken
          Lens..~ rs
          Lens.^? listRuleGroupsResponse_nextToken
          Prelude.. Lens._Just

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

instance Prelude.Hashable ListRuleGroups where
  hashWithSalt _salt ListRuleGroups' {..} =
    _salt
      `Prelude.hashWithSalt` managedType
      `Prelude.hashWithSalt` maxResults
      `Prelude.hashWithSalt` nextToken
      `Prelude.hashWithSalt` scope
      `Prelude.hashWithSalt` type'

instance Prelude.NFData ListRuleGroups where
  rnf ListRuleGroups' {..} =
    Prelude.rnf managedType
      `Prelude.seq` Prelude.rnf maxResults
      `Prelude.seq` Prelude.rnf nextToken
      `Prelude.seq` Prelude.rnf scope
      `Prelude.seq` Prelude.rnf type'

instance Data.ToHeaders ListRuleGroups where
  toHeaders =
    Prelude.const
      ( Prelude.mconcat
          [ "X-Amz-Target"
              Data.=# ( "NetworkFirewall_20201112.ListRuleGroups" ::
                          Prelude.ByteString
                      ),
            "Content-Type"
              Data.=# ( "application/x-amz-json-1.0" ::
                          Prelude.ByteString
                      )
          ]
      )

instance Data.ToJSON ListRuleGroups where
  toJSON ListRuleGroups' {..} =
    Data.object
      ( Prelude.catMaybes
          [ ("ManagedType" Data..=) Prelude.<$> managedType,
            ("MaxResults" Data..=) Prelude.<$> maxResults,
            ("NextToken" Data..=) Prelude.<$> nextToken,
            ("Scope" Data..=) Prelude.<$> scope,
            ("Type" Data..=) Prelude.<$> type'
          ]
      )

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

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

-- | /See:/ 'newListRuleGroupsResponse' smart constructor.
data ListRuleGroupsResponse = ListRuleGroupsResponse'
  { -- | When you request a list of objects with a @MaxResults@ setting, if the
    -- number of objects that are still available for retrieval exceeds the
    -- maximum you requested, Network Firewall returns a @NextToken@ value in
    -- the response. To retrieve the next batch of objects, use the token
    -- returned from the prior request in your next request.
    nextToken :: Prelude.Maybe Prelude.Text,
    -- | The rule group metadata objects that you\'ve defined. Depending on your
    -- setting for max results and the number of rule groups, this might not be
    -- the full list.
    ruleGroups :: Prelude.Maybe [RuleGroupMetadata],
    -- | The response's http status code.
    httpStatus :: Prelude.Int
  }
  deriving (Prelude.Eq, Prelude.Read, Prelude.Show, Prelude.Generic)

-- |
-- Create a value of 'ListRuleGroupsResponse' 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', 'listRuleGroupsResponse_nextToken' - When you request a list of objects with a @MaxResults@ setting, if the
-- number of objects that are still available for retrieval exceeds the
-- maximum you requested, Network Firewall returns a @NextToken@ value in
-- the response. To retrieve the next batch of objects, use the token
-- returned from the prior request in your next request.
--
-- 'ruleGroups', 'listRuleGroupsResponse_ruleGroups' - The rule group metadata objects that you\'ve defined. Depending on your
-- setting for max results and the number of rule groups, this might not be
-- the full list.
--
-- 'httpStatus', 'listRuleGroupsResponse_httpStatus' - The response's http status code.
newListRuleGroupsResponse ::
  -- | 'httpStatus'
  Prelude.Int ->
  ListRuleGroupsResponse
newListRuleGroupsResponse pHttpStatus_ =
  ListRuleGroupsResponse'
    { nextToken =
        Prelude.Nothing,
      ruleGroups = Prelude.Nothing,
      httpStatus = pHttpStatus_
    }

-- | When you request a list of objects with a @MaxResults@ setting, if the
-- number of objects that are still available for retrieval exceeds the
-- maximum you requested, Network Firewall returns a @NextToken@ value in
-- the response. To retrieve the next batch of objects, use the token
-- returned from the prior request in your next request.
listRuleGroupsResponse_nextToken :: Lens.Lens' ListRuleGroupsResponse (Prelude.Maybe Prelude.Text)
listRuleGroupsResponse_nextToken = Lens.lens (\ListRuleGroupsResponse' {nextToken} -> nextToken) (\s@ListRuleGroupsResponse' {} a -> s {nextToken = a} :: ListRuleGroupsResponse)

-- | The rule group metadata objects that you\'ve defined. Depending on your
-- setting for max results and the number of rule groups, this might not be
-- the full list.
listRuleGroupsResponse_ruleGroups :: Lens.Lens' ListRuleGroupsResponse (Prelude.Maybe [RuleGroupMetadata])
listRuleGroupsResponse_ruleGroups = Lens.lens (\ListRuleGroupsResponse' {ruleGroups} -> ruleGroups) (\s@ListRuleGroupsResponse' {} a -> s {ruleGroups = a} :: ListRuleGroupsResponse) Prelude.. Lens.mapping Lens.coerced

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

instance Prelude.NFData ListRuleGroupsResponse where
  rnf ListRuleGroupsResponse' {..} =
    Prelude.rnf nextToken
      `Prelude.seq` Prelude.rnf ruleGroups
      `Prelude.seq` Prelude.rnf httpStatus