{-# 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.GreengrassV2.ResolveComponentCandidates
-- 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 a list of components that meet the component, version, and
-- platform requirements of a deployment. Greengrass core devices call this
-- operation when they receive a deployment to identify the components to
-- install.
--
-- This operation identifies components that meet all dependency
-- requirements for a deployment. If the requirements conflict, then this
-- operation returns an error and the deployment fails. For example, this
-- occurs if component @A@ requires version @>2.0.0@ and component @B@
-- requires version @\<2.0.0@ of a component dependency.
--
-- When you specify the component candidates to resolve, IoT Greengrass
-- compares each component\'s digest from the core device with the
-- component\'s digest in the Amazon Web Services Cloud. If the digests
-- don\'t match, then IoT Greengrass specifies to use the version from the
-- Amazon Web Services Cloud.
--
-- To use this operation, you must use the data plane API endpoint and
-- authenticate with an IoT device certificate. For more information, see
-- <https://docs.aws.amazon.com/general/latest/gr/greengrass.html IoT Greengrass endpoints and quotas>.
module Amazonka.GreengrassV2.ResolveComponentCandidates
  ( -- * Creating a Request
    ResolveComponentCandidates (..),
    newResolveComponentCandidates,

    -- * Request Lenses
    resolveComponentCandidates_componentCandidates,
    resolveComponentCandidates_platform,

    -- * Destructuring the Response
    ResolveComponentCandidatesResponse (..),
    newResolveComponentCandidatesResponse,

    -- * Response Lenses
    resolveComponentCandidatesResponse_resolvedComponentVersions,
    resolveComponentCandidatesResponse_httpStatus,
  )
where

import qualified Amazonka.Core as Core
import qualified Amazonka.Core.Lens.Internal as Lens
import qualified Amazonka.Data as Data
import Amazonka.GreengrassV2.Types
import qualified Amazonka.Prelude as Prelude
import qualified Amazonka.Request as Request
import qualified Amazonka.Response as Response

-- | /See:/ 'newResolveComponentCandidates' smart constructor.
data ResolveComponentCandidates = ResolveComponentCandidates'
  { -- | The list of components to resolve.
    componentCandidates :: Prelude.Maybe [ComponentCandidate],
    -- | The platform to use to resolve compatible components.
    platform :: Prelude.Maybe ComponentPlatform
  }
  deriving (Prelude.Eq, Prelude.Read, Prelude.Show, Prelude.Generic)

-- |
-- Create a value of 'ResolveComponentCandidates' 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:
--
-- 'componentCandidates', 'resolveComponentCandidates_componentCandidates' - The list of components to resolve.
--
-- 'platform', 'resolveComponentCandidates_platform' - The platform to use to resolve compatible components.
newResolveComponentCandidates ::
  ResolveComponentCandidates
newResolveComponentCandidates =
  ResolveComponentCandidates'
    { componentCandidates =
        Prelude.Nothing,
      platform = Prelude.Nothing
    }

-- | The list of components to resolve.
resolveComponentCandidates_componentCandidates :: Lens.Lens' ResolveComponentCandidates (Prelude.Maybe [ComponentCandidate])
resolveComponentCandidates_componentCandidates = Lens.lens (\ResolveComponentCandidates' {componentCandidates} -> componentCandidates) (\s@ResolveComponentCandidates' {} a -> s {componentCandidates = a} :: ResolveComponentCandidates) Prelude.. Lens.mapping Lens.coerced

-- | The platform to use to resolve compatible components.
resolveComponentCandidates_platform :: Lens.Lens' ResolveComponentCandidates (Prelude.Maybe ComponentPlatform)
resolveComponentCandidates_platform = Lens.lens (\ResolveComponentCandidates' {platform} -> platform) (\s@ResolveComponentCandidates' {} a -> s {platform = a} :: ResolveComponentCandidates)

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

instance Prelude.Hashable ResolveComponentCandidates where
  hashWithSalt _salt ResolveComponentCandidates' {..} =
    _salt
      `Prelude.hashWithSalt` componentCandidates
      `Prelude.hashWithSalt` platform

instance Prelude.NFData ResolveComponentCandidates where
  rnf ResolveComponentCandidates' {..} =
    Prelude.rnf componentCandidates
      `Prelude.seq` Prelude.rnf platform

instance Data.ToHeaders ResolveComponentCandidates where
  toHeaders = Prelude.const Prelude.mempty

instance Data.ToJSON ResolveComponentCandidates where
  toJSON ResolveComponentCandidates' {..} =
    Data.object
      ( Prelude.catMaybes
          [ ("componentCandidates" Data..=)
              Prelude.<$> componentCandidates,
            ("platform" Data..=) Prelude.<$> platform
          ]
      )

instance Data.ToPath ResolveComponentCandidates where
  toPath =
    Prelude.const
      "/greengrass/v2/resolveComponentCandidates"

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

-- | /See:/ 'newResolveComponentCandidatesResponse' smart constructor.
data ResolveComponentCandidatesResponse = ResolveComponentCandidatesResponse'
  { -- | A list of components that meet the requirements that you specify in the
    -- request. This list includes each component\'s recipe that you can use to
    -- install the component.
    resolvedComponentVersions :: Prelude.Maybe [ResolvedComponentVersion],
    -- | The response's http status code.
    httpStatus :: Prelude.Int
  }
  deriving (Prelude.Eq, Prelude.Read, Prelude.Show, Prelude.Generic)

-- |
-- Create a value of 'ResolveComponentCandidatesResponse' 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:
--
-- 'resolvedComponentVersions', 'resolveComponentCandidatesResponse_resolvedComponentVersions' - A list of components that meet the requirements that you specify in the
-- request. This list includes each component\'s recipe that you can use to
-- install the component.
--
-- 'httpStatus', 'resolveComponentCandidatesResponse_httpStatus' - The response's http status code.
newResolveComponentCandidatesResponse ::
  -- | 'httpStatus'
  Prelude.Int ->
  ResolveComponentCandidatesResponse
newResolveComponentCandidatesResponse pHttpStatus_ =
  ResolveComponentCandidatesResponse'
    { resolvedComponentVersions =
        Prelude.Nothing,
      httpStatus = pHttpStatus_
    }

-- | A list of components that meet the requirements that you specify in the
-- request. This list includes each component\'s recipe that you can use to
-- install the component.
resolveComponentCandidatesResponse_resolvedComponentVersions :: Lens.Lens' ResolveComponentCandidatesResponse (Prelude.Maybe [ResolvedComponentVersion])
resolveComponentCandidatesResponse_resolvedComponentVersions = Lens.lens (\ResolveComponentCandidatesResponse' {resolvedComponentVersions} -> resolvedComponentVersions) (\s@ResolveComponentCandidatesResponse' {} a -> s {resolvedComponentVersions = a} :: ResolveComponentCandidatesResponse) Prelude.. Lens.mapping Lens.coerced

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

instance
  Prelude.NFData
    ResolveComponentCandidatesResponse
  where
  rnf ResolveComponentCandidatesResponse' {..} =
    Prelude.rnf resolvedComponentVersions
      `Prelude.seq` Prelude.rnf httpStatus