{-# 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.CodeCommit.GetDifferences
-- 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 information about the differences in a valid commit specifier
-- (such as a branch, tag, HEAD, commit ID, or other fully qualified
-- reference). Results can be limited to a specified path.
--
-- This operation returns paginated results.
module Amazonka.CodeCommit.GetDifferences
  ( -- * Creating a Request
    GetDifferences (..),
    newGetDifferences,

    -- * Request Lenses
    getDifferences_maxResults,
    getDifferences_nextToken,
    getDifferences_afterPath,
    getDifferences_beforeCommitSpecifier,
    getDifferences_beforePath,
    getDifferences_repositoryName,
    getDifferences_afterCommitSpecifier,

    -- * Destructuring the Response
    GetDifferencesResponse (..),
    newGetDifferencesResponse,

    -- * Response Lenses
    getDifferencesResponse_nextToken,
    getDifferencesResponse_differences,
    getDifferencesResponse_httpStatus,
  )
where

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

-- | /See:/ 'newGetDifferences' smart constructor.
data GetDifferences = GetDifferences'
  { -- | A non-zero, non-negative integer used to limit the number of returned
    -- results.
    maxResults :: Prelude.Maybe Prelude.Int,
    -- | An enumeration token that, when provided in a request, returns the next
    -- batch of the results.
    nextToken :: Prelude.Maybe Prelude.Text,
    -- | The file path in which to check differences. Limits the results to this
    -- path. Can also be used to specify the changed name of a directory or
    -- folder, if it has changed. If not specified, differences are shown for
    -- all paths.
    afterPath :: Prelude.Maybe Prelude.Text,
    -- | The branch, tag, HEAD, or other fully qualified reference used to
    -- identify a commit (for example, the full commit ID). Optional. If not
    -- specified, all changes before the @afterCommitSpecifier@ value are
    -- shown. If you do not use @beforeCommitSpecifier@ in your request,
    -- consider limiting the results with @maxResults@.
    beforeCommitSpecifier :: Prelude.Maybe Prelude.Text,
    -- | The file path in which to check for differences. Limits the results to
    -- this path. Can also be used to specify the previous name of a directory
    -- or folder. If @beforePath@ and @afterPath@ are not specified,
    -- differences are shown for all paths.
    beforePath :: Prelude.Maybe Prelude.Text,
    -- | The name of the repository where you want to get differences.
    repositoryName :: Prelude.Text,
    -- | The branch, tag, HEAD, or other fully qualified reference used to
    -- identify a commit.
    afterCommitSpecifier :: Prelude.Text
  }
  deriving (Prelude.Eq, Prelude.Read, Prelude.Show, Prelude.Generic)

-- |
-- Create a value of 'GetDifferences' 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', 'getDifferences_maxResults' - A non-zero, non-negative integer used to limit the number of returned
-- results.
--
-- 'nextToken', 'getDifferences_nextToken' - An enumeration token that, when provided in a request, returns the next
-- batch of the results.
--
-- 'afterPath', 'getDifferences_afterPath' - The file path in which to check differences. Limits the results to this
-- path. Can also be used to specify the changed name of a directory or
-- folder, if it has changed. If not specified, differences are shown for
-- all paths.
--
-- 'beforeCommitSpecifier', 'getDifferences_beforeCommitSpecifier' - The branch, tag, HEAD, or other fully qualified reference used to
-- identify a commit (for example, the full commit ID). Optional. If not
-- specified, all changes before the @afterCommitSpecifier@ value are
-- shown. If you do not use @beforeCommitSpecifier@ in your request,
-- consider limiting the results with @maxResults@.
--
-- 'beforePath', 'getDifferences_beforePath' - The file path in which to check for differences. Limits the results to
-- this path. Can also be used to specify the previous name of a directory
-- or folder. If @beforePath@ and @afterPath@ are not specified,
-- differences are shown for all paths.
--
-- 'repositoryName', 'getDifferences_repositoryName' - The name of the repository where you want to get differences.
--
-- 'afterCommitSpecifier', 'getDifferences_afterCommitSpecifier' - The branch, tag, HEAD, or other fully qualified reference used to
-- identify a commit.
newGetDifferences ::
  -- | 'repositoryName'
  Prelude.Text ->
  -- | 'afterCommitSpecifier'
  Prelude.Text ->
  GetDifferences
newGetDifferences
  pRepositoryName_
  pAfterCommitSpecifier_ =
    GetDifferences'
      { maxResults = Prelude.Nothing,
        nextToken = Prelude.Nothing,
        afterPath = Prelude.Nothing,
        beforeCommitSpecifier = Prelude.Nothing,
        beforePath = Prelude.Nothing,
        repositoryName = pRepositoryName_,
        afterCommitSpecifier = pAfterCommitSpecifier_
      }

-- | A non-zero, non-negative integer used to limit the number of returned
-- results.
getDifferences_maxResults :: Lens.Lens' GetDifferences (Prelude.Maybe Prelude.Int)
getDifferences_maxResults = Lens.lens (\GetDifferences' {maxResults} -> maxResults) (\s@GetDifferences' {} a -> s {maxResults = a} :: GetDifferences)

-- | An enumeration token that, when provided in a request, returns the next
-- batch of the results.
getDifferences_nextToken :: Lens.Lens' GetDifferences (Prelude.Maybe Prelude.Text)
getDifferences_nextToken = Lens.lens (\GetDifferences' {nextToken} -> nextToken) (\s@GetDifferences' {} a -> s {nextToken = a} :: GetDifferences)

-- | The file path in which to check differences. Limits the results to this
-- path. Can also be used to specify the changed name of a directory or
-- folder, if it has changed. If not specified, differences are shown for
-- all paths.
getDifferences_afterPath :: Lens.Lens' GetDifferences (Prelude.Maybe Prelude.Text)
getDifferences_afterPath = Lens.lens (\GetDifferences' {afterPath} -> afterPath) (\s@GetDifferences' {} a -> s {afterPath = a} :: GetDifferences)

-- | The branch, tag, HEAD, or other fully qualified reference used to
-- identify a commit (for example, the full commit ID). Optional. If not
-- specified, all changes before the @afterCommitSpecifier@ value are
-- shown. If you do not use @beforeCommitSpecifier@ in your request,
-- consider limiting the results with @maxResults@.
getDifferences_beforeCommitSpecifier :: Lens.Lens' GetDifferences (Prelude.Maybe Prelude.Text)
getDifferences_beforeCommitSpecifier = Lens.lens (\GetDifferences' {beforeCommitSpecifier} -> beforeCommitSpecifier) (\s@GetDifferences' {} a -> s {beforeCommitSpecifier = a} :: GetDifferences)

-- | The file path in which to check for differences. Limits the results to
-- this path. Can also be used to specify the previous name of a directory
-- or folder. If @beforePath@ and @afterPath@ are not specified,
-- differences are shown for all paths.
getDifferences_beforePath :: Lens.Lens' GetDifferences (Prelude.Maybe Prelude.Text)
getDifferences_beforePath = Lens.lens (\GetDifferences' {beforePath} -> beforePath) (\s@GetDifferences' {} a -> s {beforePath = a} :: GetDifferences)

-- | The name of the repository where you want to get differences.
getDifferences_repositoryName :: Lens.Lens' GetDifferences Prelude.Text
getDifferences_repositoryName = Lens.lens (\GetDifferences' {repositoryName} -> repositoryName) (\s@GetDifferences' {} a -> s {repositoryName = a} :: GetDifferences)

-- | The branch, tag, HEAD, or other fully qualified reference used to
-- identify a commit.
getDifferences_afterCommitSpecifier :: Lens.Lens' GetDifferences Prelude.Text
getDifferences_afterCommitSpecifier = Lens.lens (\GetDifferences' {afterCommitSpecifier} -> afterCommitSpecifier) (\s@GetDifferences' {} a -> s {afterCommitSpecifier = a} :: GetDifferences)

instance Core.AWSPager GetDifferences where
  page rq rs
    | Core.stop
        ( rs
            Lens.^? getDifferencesResponse_nextToken
            Prelude.. Lens._Just
        ) =
        Prelude.Nothing
    | Core.stop
        ( rs
            Lens.^? getDifferencesResponse_differences
            Prelude.. Lens._Just
        ) =
        Prelude.Nothing
    | Prelude.otherwise =
        Prelude.Just
          Prelude.$ rq
          Prelude.& getDifferences_nextToken
          Lens..~ rs
          Lens.^? getDifferencesResponse_nextToken
          Prelude.. Lens._Just

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

instance Prelude.Hashable GetDifferences where
  hashWithSalt _salt GetDifferences' {..} =
    _salt
      `Prelude.hashWithSalt` maxResults
      `Prelude.hashWithSalt` nextToken
      `Prelude.hashWithSalt` afterPath
      `Prelude.hashWithSalt` beforeCommitSpecifier
      `Prelude.hashWithSalt` beforePath
      `Prelude.hashWithSalt` repositoryName
      `Prelude.hashWithSalt` afterCommitSpecifier

instance Prelude.NFData GetDifferences where
  rnf GetDifferences' {..} =
    Prelude.rnf maxResults
      `Prelude.seq` Prelude.rnf nextToken
      `Prelude.seq` Prelude.rnf afterPath
      `Prelude.seq` Prelude.rnf beforeCommitSpecifier
      `Prelude.seq` Prelude.rnf beforePath
      `Prelude.seq` Prelude.rnf repositoryName
      `Prelude.seq` Prelude.rnf afterCommitSpecifier

instance Data.ToHeaders GetDifferences where
  toHeaders =
    Prelude.const
      ( Prelude.mconcat
          [ "X-Amz-Target"
              Data.=# ( "CodeCommit_20150413.GetDifferences" ::
                          Prelude.ByteString
                      ),
            "Content-Type"
              Data.=# ( "application/x-amz-json-1.1" ::
                          Prelude.ByteString
                      )
          ]
      )

instance Data.ToJSON GetDifferences where
  toJSON GetDifferences' {..} =
    Data.object
      ( Prelude.catMaybes
          [ ("MaxResults" Data..=) Prelude.<$> maxResults,
            ("NextToken" Data..=) Prelude.<$> nextToken,
            ("afterPath" Data..=) Prelude.<$> afterPath,
            ("beforeCommitSpecifier" Data..=)
              Prelude.<$> beforeCommitSpecifier,
            ("beforePath" Data..=) Prelude.<$> beforePath,
            Prelude.Just
              ("repositoryName" Data..= repositoryName),
            Prelude.Just
              ( "afterCommitSpecifier"
                  Data..= afterCommitSpecifier
              )
          ]
      )

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

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

-- | /See:/ 'newGetDifferencesResponse' smart constructor.
data GetDifferencesResponse = GetDifferencesResponse'
  { -- | An enumeration token that can be used in a request to return the next
    -- batch of the results.
    nextToken :: Prelude.Maybe Prelude.Text,
    -- | A data type object that contains information about the differences,
    -- including whether the difference is added, modified, or deleted (A, D,
    -- M).
    differences :: Prelude.Maybe [Difference],
    -- | The response's http status code.
    httpStatus :: Prelude.Int
  }
  deriving (Prelude.Eq, Prelude.Read, Prelude.Show, Prelude.Generic)

-- |
-- Create a value of 'GetDifferencesResponse' 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', 'getDifferencesResponse_nextToken' - An enumeration token that can be used in a request to return the next
-- batch of the results.
--
-- 'differences', 'getDifferencesResponse_differences' - A data type object that contains information about the differences,
-- including whether the difference is added, modified, or deleted (A, D,
-- M).
--
-- 'httpStatus', 'getDifferencesResponse_httpStatus' - The response's http status code.
newGetDifferencesResponse ::
  -- | 'httpStatus'
  Prelude.Int ->
  GetDifferencesResponse
newGetDifferencesResponse pHttpStatus_ =
  GetDifferencesResponse'
    { nextToken =
        Prelude.Nothing,
      differences = Prelude.Nothing,
      httpStatus = pHttpStatus_
    }

-- | An enumeration token that can be used in a request to return the next
-- batch of the results.
getDifferencesResponse_nextToken :: Lens.Lens' GetDifferencesResponse (Prelude.Maybe Prelude.Text)
getDifferencesResponse_nextToken = Lens.lens (\GetDifferencesResponse' {nextToken} -> nextToken) (\s@GetDifferencesResponse' {} a -> s {nextToken = a} :: GetDifferencesResponse)

-- | A data type object that contains information about the differences,
-- including whether the difference is added, modified, or deleted (A, D,
-- M).
getDifferencesResponse_differences :: Lens.Lens' GetDifferencesResponse (Prelude.Maybe [Difference])
getDifferencesResponse_differences = Lens.lens (\GetDifferencesResponse' {differences} -> differences) (\s@GetDifferencesResponse' {} a -> s {differences = a} :: GetDifferencesResponse) Prelude.. Lens.mapping Lens.coerced

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

instance Prelude.NFData GetDifferencesResponse where
  rnf GetDifferencesResponse' {..} =
    Prelude.rnf nextToken
      `Prelude.seq` Prelude.rnf differences
      `Prelude.seq` Prelude.rnf httpStatus