discourse/spec/requests/uploads_controller_spec.rb

# frozen_string_literal: true

RSpec.describe UploadsController do
  fab!(:user) { Fabricate(:user) }

  describe '#create' do
    it 'requires you to be logged in' do
      post "/uploads.json"
      expect(response.status).to eq(403)
    end

    context 'logged in' do
      before do
        sign_in(user)
      end

      let(:logo_file) { file_from_fixtures("logo.png") }
      let(:logo_filename) { File.basename(logo_file) }

      let(:logo) { Rack::Test::UploadedFile.new(logo_file) }
      let(:fake_jpg) { Rack::Test::UploadedFile.new(file_from_fixtures("fake.jpg")) }
      let(:text_file) { Rack::Test::UploadedFile.new(File.new("#{Rails.root}/LICENSE.txt")) }

      it 'expects a type or upload_type' do
        post "/uploads.json", params: { file: logo }
        expect(response.status).to eq(400)
        post "/uploads.json", params: { file: Rack::Test::UploadedFile.new(logo_file), type: "avatar" }
        expect(response.status).to eq 200
        post "/uploads.json", params: { file: Rack::Test::UploadedFile.new(logo_file), upload_type: "avatar" }
        expect(response.status).to eq 200
      end

      it 'is successful with an image' do
        post "/uploads.json", params: { file: logo, type: "avatar" }
        expect(response.status).to eq 200
        expect(response.parsed_body["id"]).to be_present
        expect(Jobs::CreateAvatarThumbnails.jobs.size).to eq(1)
      end

      it 'returns "raw" url for site settings' do
        set_cdn_url "https://awesome.com"

        upload = UploadCreator.new(logo_file, "logo.png").create_for(-1)
        logo = Rack::Test::UploadedFile.new(file_from_fixtures("logo.png"))

        post "/uploads.json", params: { file: logo, type: "site_setting", for_site_setting: "true" }
        expect(response.status).to eq 200
        expect(response.parsed_body["url"]).to eq(upload.url)
      end

      it 'returns cdn url' do
        set_cdn_url "https://awesome.com"
        post "/uploads.json", params: { file: logo, type: "composer" }
        expect(response.status).to eq 200
        expect(response.parsed_body["url"]).to start_with("https://awesome.com/uploads/default/")
      end

      it 'is successful with an attachment' do
        SiteSetting.authorized_extensions = "*"

        post "/uploads.json", params: { file: text_file, type: "composer" }
        expect(response.status).to eq 200

        expect(Jobs::CreateAvatarThumbnails.jobs.size).to eq(0)
        id = response.parsed_body["id"]
        expect(id).to be
      end

      it 'is successful with api' do
        SiteSetting.authorized_extensions = "*"
        api_key = Fabricate(:api_key, user: user).key

        url = "http://example.com/image.png"
        png = File.read(Rails.root + "spec/fixtures/images/logo.png")

        stub_request(:get, url).to_return(status: 200, body: png)

        post "/uploads.json", params: { url: url, type: "avatar" }, headers: {
          HTTP_API_KEY: api_key,
          HTTP_API_USERNAME: user.username.downcase
        }

        json = response.parsed_body

        expect(response.status).to eq(200)
        expect(Jobs::CreateAvatarThumbnails.jobs.size).to eq(1)
        expect(json["id"]).to be_present
        expect(json["short_url"]).to eq("upload://qUm0DGR49PAZshIi7HxMd3cAlzn.png")
      end

      it 'correctly sets retain_hours for admins' do
        sign_in(Fabricate(:admin))

        post "/uploads.json", params: {
          file: logo,
          retain_hours: 100,
          type: "profile_background",
        }

        id = response.parsed_body["id"]
        expect(Jobs::CreateAvatarThumbnails.jobs.size).to eq(0)
        expect(Upload.find(id).retain_hours).to eq(100)
      end

      it 'requires a file' do
        post "/uploads.json", params: { type: "composer" }

        expect(Jobs::CreateAvatarThumbnails.jobs.size).to eq(0)
        message = response.parsed_body
        expect(response.status).to eq 422
        expect(message["errors"]).to contain_exactly(I18n.t("upload.file_missing"))
      end

      it 'properly returns errors' do
        SiteSetting.authorized_extensions = "*"
        SiteSetting.max_attachment_size_kb = 1

        post "/uploads.json", params: { file: text_file, type: "avatar" }

        expect(response.status).to eq(422)
        expect(Jobs::CreateAvatarThumbnails.jobs.size).to eq(0)
        errors = response.parsed_body["errors"]
        expect(errors.first).to eq(I18n.t("upload.attachments.too_large_humanized", max_size: "1 KB"))
      end

      it 'ensures allow_uploaded_avatars is enabled when uploading an avatar' do
        SiteSetting.allow_uploaded_avatars = 'disabled'
        post "/uploads.json", params: { file: logo, type: "avatar" }
        expect(response.status).to eq(422)
      end

      it 'ensures discourse_connect_overrides_avatar is not enabled when uploading an avatar' do
        SiteSetting.discourse_connect_overrides_avatar = true
        post "/uploads.json", params: { file: logo, type: "avatar" }
        expect(response.status).to eq(422)
      end

      it 'always allows admins to upload avatars' do
        sign_in(Fabricate(:admin))
        SiteSetting.allow_uploaded_avatars = 'disabled'

        post "/uploads.json", params: { file: logo, type: "avatar" }
        expect(response.status).to eq(200)
      end

      it 'allows staff to upload any file in PM' do
        SiteSetting.authorized_extensions = "jpg"
        SiteSetting.allow_staff_to_upload_any_file_in_pm = true
        user.update_columns(moderator: true)

        post "/uploads.json", params: {
          file: text_file,
          type: "composer",
          for_private_message: "true",
        }

        expect(response.status).to eq(200)
        id = response.parsed_body["id"]
        expect(Upload.last.id).to eq(id)
      end

      it 'allows staff to upload supported images for site settings' do
        SiteSetting.authorized_extensions = ''
        user.update!(admin: true)

        post "/uploads.json", params: {
          file: logo,
          type: "site_setting",
          for_site_setting: "true",
        }

        expect(response.status).to eq(200)
        id = response.parsed_body["id"]

        upload = Upload.last

        expect(upload.id).to eq(id)
        expect(upload.original_filename).to eq(logo_filename)
      end

      it 'respects `authorized_extensions_for_staff` setting when staff upload file' do
        SiteSetting.authorized_extensions = ""
        SiteSetting.authorized_extensions_for_staff = "*"
        user.update_columns(moderator: true)

        post "/uploads.json", params: {
          file: text_file,
          type: "composer",
        }

        expect(response.status).to eq(200)
        data = response.parsed_body
        expect(data["id"]).to be_present
      end

      it 'ignores `authorized_extensions_for_staff` setting when non-staff upload file' do
        SiteSetting.authorized_extensions = ""
        SiteSetting.authorized_extensions_for_staff = "*"

        post "/uploads.json", params: {
          file: text_file,
          type: "composer",
        }

        data = response.parsed_body
        expect(data["errors"].first).to eq(I18n.t("upload.unauthorized", authorized_extensions: ''))
      end

      it 'returns an error when it could not determine the dimensions of an image' do
        post "/uploads.json", params: { file: fake_jpg, type: "composer" }

        expect(response.status).to eq(422)
        expect(Jobs::CreateAvatarThumbnails.jobs.size).to eq(0)
        message = response.parsed_body["errors"]
        expect(message).to contain_exactly(I18n.t("upload.images.size_not_found"))
      end
    end
  end

  def upload_file(file, folder = "images")
    fake_logo = Rack::Test::UploadedFile.new(file_from_fixtures(file, folder))
    SiteSetting.authorized_extensions = "*"
    sign_in(user)

    post "/uploads.json", params: {
      file: fake_logo,
      type: "composer",
    }

    expect(response.status).to eq(200)

    url = response.parsed_body["url"]
    upload = Upload.get_from_url(url)
    upload
  end

  describe '#show' do
    let(:site) { "default" }
    let(:sha) { Digest::SHA1.hexdigest("discourse") }

    context "when using external storage" do
      fab!(:upload) { upload_file("small.pdf", "pdf") }

      before do
        setup_s3
      end

      it "returns 404 " do
        upload = Fabricate(:upload_s3)
        get "/uploads/#{site}/#{upload.sha1}.#{upload.extension}"

        expect(response.response_code).to eq(404)
      end

      it "returns upload if url not migrated" do
        get "/uploads/#{site}/#{upload.sha1}.#{upload.extension}"

        expect(response.status).to eq(200)
      end
    end

    it "returns 404 when the upload doesn't exist" do
      get "/uploads/#{site}/#{sha}.pdf"
      expect(response.status).to eq(404)
    end

    it "returns 404 when the path is nil" do
      upload = upload_file("logo.png")
      upload.update_column(:url, "invalid-url")

      get "/uploads/#{site}/#{upload.sha1}.#{upload.extension}"
      expect(response.status).to eq(404)
    end

    it 'uses send_file' do
      upload = upload_file("logo.png")
      get "/uploads/#{site}/#{upload.sha1}.#{upload.extension}"
      expect(response.status).to eq(200)

      expect(response.headers["Content-Disposition"])
        .to eq(%Q|attachment; filename="#{upload.original_filename}"; filename*=UTF-8''#{upload.original_filename}|)
    end

    it 'returns 200 when js file' do
      ActionDispatch::FileHandler.any_instance.stubs(:match?).returns(false)
      upload = upload_file("test.js", "themes")
      get upload.url
      expect(response.status).to eq(200)
    end

    it "handles image without extension" do
      SiteSetting.authorized_extensions = "*"
      upload = upload_file("image_no_extension")

      get "/uploads/#{site}/#{upload.sha1}.json"
      expect(response.status).to eq(200)
      expect(response.headers["Content-Disposition"])
        .to eq(%Q|attachment; filename="#{upload.original_filename}"; filename*=UTF-8''#{upload.original_filename}|)
    end

    it "handles file without extension" do
      SiteSetting.authorized_extensions = "*"
      upload = upload_file("not_an_image")

      get "/uploads/#{site}/#{upload.sha1}.json"
      expect(response.status).to eq(200)
      expect(response.headers["Content-Disposition"])
        .to eq(%Q|attachment; filename="#{upload.original_filename}"; filename*=UTF-8''#{upload.original_filename}|)
    end

    context "prevent anons from downloading files" do
      it "returns 404 when an anonymous user tries to download a file" do
        upload = upload_file("small.pdf", "pdf")
        delete "/session/#{user.username}.json"

        SiteSetting.prevent_anons_from_downloading_files = true
        get "/uploads/#{site}/#{upload.sha1}.#{upload.extension}"
        expect(response.status).to eq(404)
      end
    end
  end

  describe "#show_short" do
    it 'inlines only supported image files' do
      upload = upload_file("smallest.png")
      get upload.short_path, params: { inline: true }
      expect(response.header['Content-Type']).to eq('image/png')
      expect(response.header['Content-Disposition']).to include('inline;')

      upload.update!(original_filename: "test.xml")
      get upload.short_path, params: { inline: true }
      expect(response.header['Content-Type']).to eq('application/xml')
      expect(response.header['Content-Disposition']).to include('attachment;')
    end

    describe "local store" do
      fab!(:image_upload) { upload_file("smallest.png") }

      it "returns the right response" do
        get image_upload.short_path

        expect(response.status).to eq(200)

        expect(response.headers["Content-Disposition"])
          .to include("attachment; filename=\"#{image_upload.original_filename}\"")
      end

      it "returns the right response when `inline` param is given" do
        get "#{image_upload.short_path}?inline=1"

        expect(response.status).to eq(200)

        expect(response.headers["Content-Disposition"])
          .to include("inline; filename=\"#{image_upload.original_filename}\"")
      end

      it "returns the right response when base62 param is invalid " do
        get "/uploads/short-url/12345.png"

        expect(response.status).to eq(404)
      end

      it "returns uploads with underscore in extension correctly" do
        fake_upload = upload_file("fake.not_image")
        get fake_upload.short_path

        expect(response.status).to eq(200)
      end

      it "returns uploads with a dash and uppercase in extension correctly" do
        fake_upload = upload_file("fake.long-FileExtension")
        get fake_upload.short_path

        expect(response.status).to eq(200)
      end

      it "returns the right response when anon tries to download a file " \
        "when prevent_anons_from_downloading_files is true" do

        delete "/session/#{user.username}.json"
        SiteSetting.prevent_anons_from_downloading_files = true

        get image_upload.short_path

        expect(response.status).to eq(404)
      end
    end

    describe "s3 store" do
      let(:upload) { Fabricate(:upload_s3) }

      before do
        setup_s3
      end

      it "should redirect to the s3 URL" do
        get upload.short_path

        expect(response).to redirect_to(upload.url)
      end

      context "when upload is secure and secure media enabled" do
        before do
          SiteSetting.secure_media = true
          upload.update(secure: true)
        end

        it "redirects to the signed_url_for_path" do
          sign_in(user)
          freeze_time
          get upload.short_path

          expect(response).to redirect_to(Discourse.store.signed_url_for_path(Discourse.store.get_path_for_upload(upload)))
          expect(response.header['Location']).not_to include('response-content-disposition=attachment')
        end

        it "respects the force download (dl) param" do
          sign_in(user)
          freeze_time
          get upload.short_path, params: { dl: '1' }
          expect(response.header['Location']).to include('response-content-disposition=attachment')
        end

        it "has the correct caching header" do
          sign_in(user)
          get upload.short_path

          expected_max_age = SiteSetting.s3_presigned_get_url_expires_after_seconds - UploadsController::SECURE_REDIRECT_GRACE_SECONDS
          expect(expected_max_age).to be > 0 # Sanity check that the constants haven't been set to broken values

          expect(response.headers["Cache-Control"]).to eq("max-age=#{expected_max_age}, private")
        end

        it "raises invalid access if the user cannot access the upload access control post" do
          sign_in(user)
          post = Fabricate(:post)
          post.topic.change_category_to_id(Fabricate(:private_category, group: Fabricate(:group)).id)
          upload.update(access_control_post: post)

          get upload.short_path
          expect(response.code).to eq("403")
        end
      end
    end
  end

  describe "#show_secure" do
    describe "local store" do
      fab!(:image_upload) { upload_file("smallest.png") }

      it "does not return secure media when using local store" do
        secure_url = image_upload.url.sub("/uploads", "/secure-media-uploads")
        get secure_url

        expect(response.status).to eq(404)
      end
    end

    describe "s3 store" do
      let(:upload) { Fabricate(:upload_s3) }
      let(:secure_url) { upload.url.sub(SiteSetting.Upload.absolute_base_url, "/secure-media-uploads") }

      before do
        setup_s3
        SiteSetting.authorized_extensions = "*"
        SiteSetting.secure_media = true
      end

      it "should return 404 for anonymous requests requests" do
        get secure_url
        expect(response.status).to eq(404)
      end

      it "should return signed url for legitimate request" do
        sign_in(user)
        get secure_url

        expect(response.status).to eq(302)
        expect(response.redirect_url).to match("Amz-Expires")
      end

      it "should return secure media URL when looking up urls" do
        upload.update_column(:secure, true)
        sign_in(user)

        post "/uploads/lookup-urls.json", params: { short_urls: [upload.short_url] }
        expect(response.status).to eq(200)

        result = response.parsed_body
        expect(result[0]["url"]).to match("secure-media-uploads")
      end

      context "when the upload cannot be found from the URL" do
        it "returns a 404" do
          sign_in(user)
          upload.update(sha1: 'test')

          get secure_url
          expect(response.status).to eq(404)
        end
      end

      context "when the access_control_post_id has been set for the upload" do
        let(:post) { Fabricate(:post) }
        let!(:private_category) { Fabricate(:private_category, group: Fabricate(:group)) }

        before do
          sign_in(user)
          upload.update(access_control_post_id: post.id)
        end

        context "when the user has access to the post via guardian" do
          it "should return signed url for legitimate request" do
            sign_in(user)
            get secure_url
            expect(response.status).to eq(302)
            expect(response.redirect_url).to match("Amz-Expires")
          end
        end

        context "when the user does not have access to the post via guardian" do
          before do
            post.topic.change_category_to_id(private_category.id)
          end

          it "returns a 403" do
            sign_in(user)
            get secure_url
            expect(response.status).to eq(403)
          end
        end
      end

      context "when the upload is an attachment file" do
        before do
          upload.update(original_filename: 'test.pdf')
        end
        it "redirects to the signed_url_for_path" do
          sign_in(user)
          get secure_url
          expect(response.status).to eq(302)
          expect(response.redirect_url).to match("Amz-Expires")
        end

        context "when the user does not have access to the access control post via guardian" do
          let(:post) { Fabricate(:post) }
          let!(:private_category) { Fabricate(:private_category, group: Fabricate(:group)) }

          before do
            post.topic.change_category_to_id(private_category.id)
            upload.update(access_control_post_id: post.id)
          end

          it "returns a 403" do
            sign_in(user)
            get secure_url
            expect(response.status).to eq(403)
          end
        end

        context "when the prevent_anons_from_downloading_files setting is enabled and the user is anon" do
          before do
            SiteSetting.prevent_anons_from_downloading_files = true
          end

          it "returns a 404" do
            delete "/session/#{user.username}.json"
            get secure_url
            expect(response.status).to eq(404)
          end
        end
      end

      context "when secure media is disabled" do
        before do
          SiteSetting.secure_media = false
        end

        context "if the upload is secure false, meaning the ACL is probably public" do
          before do
            upload.update(secure: false)
          end

          it "should redirect to the regular show route" do
            secure_url = upload.url.sub(SiteSetting.Upload.absolute_base_url, "/secure-media-uploads")
            sign_in(user)
            get secure_url

            expect(response.status).to eq(302)
            expect(response.redirect_url).to eq(Discourse.store.cdn_url(upload.url))
          end
        end

        context "if the upload is secure true, meaning the ACL is probably private" do
          before do
            upload.update(secure: true)
          end

          it "should redirect to the presigned URL still otherwise we will get a 403" do
            secure_url = upload.url.sub(SiteSetting.Upload.absolute_base_url, "/secure-media-uploads")
            sign_in(user)
            get secure_url

            expect(response.status).to eq(302)
            expect(response.redirect_url).to match("Amz-Expires")
          end
        end
      end
    end
  end

  describe '#lookup_urls' do
    it 'can look up long urls' do
      sign_in(user)
      upload = Fabricate(:upload)

      post "/uploads/lookup-urls.json", params: { short_urls: [upload.short_url] }
      expect(response.status).to eq(200)

      result = response.parsed_body
      expect(result[0]["url"]).to eq(upload.url)
      expect(result[0]["short_path"]).to eq(upload.short_path)
    end

    describe 'secure media' do
      let(:upload) { Fabricate(:upload_s3, secure: true) }

      before do
        setup_s3
        SiteSetting.authorized_extensions = "pdf|png"
        SiteSetting.secure_media = true
      end

      it 'returns secure url for a secure media upload' do
        sign_in(user)

        post "/uploads/lookup-urls.json", params: { short_urls: [upload.short_url] }
        expect(response.status).to eq(200)

        result = response.parsed_body
        expect(result[0]["url"]).to match("/secure-media-uploads")
        expect(result[0]["short_path"]).to eq(upload.short_path)
      end

      it 'returns secure urls for non-media uploads' do
        upload.update!(original_filename: "not-an-image.pdf", extension: "pdf")
        sign_in(user)

        post "/uploads/lookup-urls.json", params: { short_urls: [upload.short_url] }
        expect(response.status).to eq(200)

        result = response.parsed_body
        expect(result[0]["url"]).to match("/secure-media-uploads")
        expect(result[0]["short_path"]).to eq(upload.short_path)
      end
    end
  end

  describe '#metadata' do
    fab!(:upload) { Fabricate(:upload) }

    describe 'when url is missing' do
      it 'should return the right response' do
        post "/uploads/lookup-metadata.json"

        expect(response.status).to eq(403)
      end
    end

    describe 'when not signed in' do
      it 'should return the right response' do
        post "/uploads/lookup-metadata.json", params: { url: upload.url }

        expect(response.status).to eq(403)
      end
    end

    describe 'when signed in' do
      before do
        sign_in(user)
      end

      describe 'when url is invalid' do
        it 'should return the right response' do
          post "/uploads/lookup-metadata.json", params: { url: 'abc' }

          expect(response.status).to eq(404)
        end
      end

      it "should return the right response" do
        post "/uploads/lookup-metadata.json", params: { url: upload.url }

        expect(response.status).to eq(200)

        result = response.parsed_body

        expect(result["original_filename"]).to eq(upload.original_filename)
        expect(result["width"]).to eq(upload.width)
        expect(result["height"]).to eq(upload.height)
        expect(result["human_filesize"]).to eq(upload.human_filesize)
      end
    end
  end

  describe "#generate_presigned_put" do
    context "when the store is external" do
      before do
        sign_in(user)
        SiteSetting.enable_direct_s3_uploads = true
        setup_s3
      end

      it "errors if the correct params are not provided" do
        post "/uploads/generate-presigned-put.json", params: { file_name: "test.png" }
        expect(response.status).to eq(400)
        post "/uploads/generate-presigned-put.json", params: { type: "card_background" }
        expect(response.status).to eq(400)
      end

      it "generates a presigned URL and creates an external upload stub" do
        post "/uploads/generate-presigned-put.json", params: {
          file_name: "test.png", type: "card_background", file_size: 1024
        }
        expect(response.status).to eq(200)

        result = response.parsed_body

        external_upload_stub = ExternalUploadStub.where(
          unique_identifier: result["unique_identifier"],
          original_filename: "test.png",
          created_by: user,
          upload_type: "card_background",
          filesize: 1024
        )
        expect(external_upload_stub.exists?).to eq(true)
        expect(result["key"]).to include(FileStore::S3Store::TEMPORARY_UPLOAD_PREFIX)
        expect(result["url"]).to include(FileStore::S3Store::TEMPORARY_UPLOAD_PREFIX)
        expect(result["url"]).to include("Amz-Expires")
      end

      it "includes accepted metadata in the presigned url when provided" do
        post "/uploads/generate-presigned-put.json", **{
          params: {
            file_name: "test.png",
            file_size: 1024,
            type: "card_background",
            metadata: {
              "sha1-checksum" => "testing",
              "blah" => "wontbeincluded"
            }
          }
        }
        expect(response.status).to eq(200)

        result = response.parsed_body
        expect(result['url']).to include("&x-amz-meta-sha1-checksum=testing")
        expect(result['url']).not_to include("&x-amz-meta-blah=wontbeincluded")
      end

      it "rate limits" do
        RateLimiter.enable
        RateLimiter.clear_all!

        stub_const(ExternalUploadHelpers, "PRESIGNED_PUT_RATE_LIMIT_PER_MINUTE", 1) do
          post "/uploads/generate-presigned-put.json", params: { file_name: "test.png", type: "card_background", file_size: 1024 }
          post "/uploads/generate-presigned-put.json", params: { file_name: "test.png", type: "card_background", file_size: 1024 }
        end
        expect(response.status).to eq(429)
      end
    end

    context "when the store is not external" do
      before do
        sign_in(user)
      end

      it "returns 404" do
        post "/uploads/generate-presigned-put.json", params: { file_name: "test.png", type: "card_background", file_size: 1024 }
        expect(response.status).to eq(404)
      end
    end
  end

  describe "#create_multipart" do
    context "when the store is external" do
      let(:mock_multipart_upload_id) { "ibZBv_75gd9r8lH_gqXatLdxMVpAlj6CFTR.OwyF3953YdwbcQnMA2BLGn8Lx12fQNICtMw5KyteFeHw.Sjng--" }
      let(:test_bucket_prefix) { "test_#{ENV['TEST_ENV_NUMBER'].presence || '0'}" }

      before do
        sign_in(user)
        SiteSetting.enable_direct_s3_uploads = true
        setup_s3
      end

      it "errors if the correct params are not provided" do
        post "/uploads/create-multipart.json", params: { file_name: "test.png" }
        expect(response.status).to eq(400)
        post "/uploads/create-multipart.json", params: { upload_type: "composer" }
        expect(response.status).to eq(400)
      end

      it "returns 422 when the create request errors" do
        FileStore::S3Store.any_instance.stubs(:create_multipart).raises(Aws::S3::Errors::ServiceError.new({}, "test"))
        post "/uploads/create-multipart.json", **{
          params: {
            file_name: "test.png",
            file_size: 1024,
            upload_type: "composer",
          }
        }
        expect(response.status).to eq(422)
      end

      it "returns 422 when the file is an attachment and it's too big" do
        SiteSetting.max_attachment_size_kb = 1024
        post "/uploads/create-multipart.json", **{
          params: {
            file_name: "test.zip",
            file_size: 9999999,
            upload_type: "composer",
          }
        }
        expect(response.status).to eq(422)
        expect(response.body).to include(I18n.t("upload.attachments.too_large_humanized", max_size: "1 MB"))
      end

      it 'returns a sensible error if the file size is 0 bytes' do
        SiteSetting.authorized_extensions = "*"
        stub_create_multipart_request

        post "/uploads/create-multipart.json", **{
          params: {
            file_name: "test.zip",
            file_size: 0,
            upload_type: "composer",
          }
        }

        expect(response.status).to eq(422)
        expect(response.body).to include(I18n.t("upload.size_zero_failure"))
      end

      def stub_create_multipart_request
        FileStore::S3Store.any_instance.stubs(:temporary_upload_path).returns(
          "uploads/default/#{test_bucket_prefix}/temp/28fccf8259bbe75b873a2bd2564b778c/test.png"
        )
        create_multipart_result = <<~XML
        <?xml version=\"1.0\" encoding=\"UTF-8\"?>\n
        <InitiateMultipartUploadResult>
           <Bucket>s3-upload-bucket</Bucket>
           <Key>uploads/default/#{test_bucket_prefix}/temp/28fccf8259bbe75b873a2bd2564b778c/test.png</Key>
           <UploadId>#{mock_multipart_upload_id}</UploadId>
        </InitiateMultipartUploadResult>
        XML
        stub_request(
          :post,
          "https://s3-upload-bucket.s3.us-west-1.amazonaws.com/uploads/default/#{test_bucket_prefix}/temp/28fccf8259bbe75b873a2bd2564b778c/test.png?uploads"
        ).to_return({ status: 200, body: create_multipart_result })
      end

      it "creates a multipart upload and creates an external upload stub that is marked as multipart" do
        stub_create_multipart_request
        post "/uploads/create-multipart.json", **{
          params: {
            file_name: "test.png",
            file_size: 1024,
            upload_type: "composer",
          }
        }

        expect(response.status).to eq(200)
        result = response.parsed_body

        external_upload_stub = ExternalUploadStub.where(
          unique_identifier: result["unique_identifier"],
          original_filename: "test.png",
          created_by: user,
          upload_type: "composer",
          key: result["key"],
          external_upload_identifier: mock_multipart_upload_id,
          multipart: true,
          filesize: 1024
        )
        expect(external_upload_stub.exists?).to eq(true)
        expect(result["key"]).to include(FileStore::S3Store::TEMPORARY_UPLOAD_PREFIX)
        expect(result["external_upload_identifier"]).to eq(mock_multipart_upload_id)
        expect(result["key"]).to eq(external_upload_stub.last.key)
      end

      it "includes accepted metadata when calling the store to create_multipart, but only allowed keys" do
        stub_create_multipart_request
        FileStore::S3Store.any_instance.expects(:create_multipart).with(
          "test.png", "image/png", metadata: { "sha1-checksum" => "testing" }
        ).returns({ key: "test" })

        post "/uploads/create-multipart.json", **{
          params: {
            file_name: "test.png",
            file_size: 1024,
            upload_type: "composer",
            metadata: {
              "sha1-checksum" => "testing",
              "blah" => "wontbeincluded"
            }
          }
        }

        expect(response.status).to eq(200)
      end

      it "rate limits" do
        RateLimiter.enable
        RateLimiter.clear_all!

        stub_create_multipart_request
        stub_const(ExternalUploadHelpers, "CREATE_MULTIPART_RATE_LIMIT_PER_MINUTE", 1) do
          post "/uploads/create-multipart.json", params: {
            file_name: "test.png",
            upload_type: "composer",
            file_size: 1024
          }
          expect(response.status).to eq(200)

          post "/uploads/create-multipart.json", params: {
            file_name: "test.png",
            upload_type: "composer",
            file_size: 1024
          }
          expect(response.status).to eq(429)
        end
      end
    end

    context "when the store is not external" do
      before do
        sign_in(user)
      end

      it "returns 404" do
        post "/uploads/create-multipart.json", params: {
          file_name: "test.png",
          upload_type: "composer",
          file_size: 1024
        }
        expect(response.status).to eq(404)
      end
    end
  end

  describe "#batch_presign_multipart_parts" do
    fab!(:mock_multipart_upload_id) { "ibZBv_75gd9r8lH_gqXatLdxMVpAlj6CFTR.OwyF3953YdwbcQnMA2BLGn8Lx12fQNICtMw5KyteFeHw.Sjng--" }
    fab!(:external_upload_stub) do
      Fabricate(:image_external_upload_stub, created_by: user, multipart: true, external_upload_identifier: mock_multipart_upload_id)
    end

    context "when the store is external" do
      before do
        sign_in(user)
        SiteSetting.enable_direct_s3_uploads = true
        setup_s3
      end

      def stub_list_multipart_request
        list_multipart_result = <<~XML
        <?xml version=\"1.0\" encoding=\"UTF-8\"?>\n
        <ListPartsResult>
           <Bucket>s3-upload-bucket</Bucket>
           <Key>#{external_upload_stub.key}</Key>
           <UploadId>#{mock_multipart_upload_id}</UploadId>
           <PartNumberMarker>0</PartNumberMarker>
           <NextPartNumberMarker>0</NextPartNumberMarker>
           <MaxParts>1</MaxParts>
           <IsTruncated>false</IsTruncated>
           <Part>
              <ETag>test</ETag>
              <LastModified>#{Time.zone.now}</LastModified>
              <PartNumber>1</PartNumber>
              <Size>#{5.megabytes}</Size>
           </Part>
           <Initiator>
              <DisplayName>test-upload-user</DisplayName>
              <ID>arn:aws:iam::123:user/test-upload-user</ID>
           </Initiator>
           <Owner>
              <DisplayName></DisplayName>
              <ID>12345</ID>
           </Owner>
           <StorageClass>STANDARD</StorageClass>
        </ListPartsResult>
        XML
        stub_request(:get, "https://s3-upload-bucket.s3.us-west-1.amazonaws.com/#{external_upload_stub.key}?max-parts=1&uploadId=#{mock_multipart_upload_id}").to_return({ status: 200, body: list_multipart_result })
      end

      it "errors if the correct params are not provided" do
        post "/uploads/batch-presign-multipart-parts.json", params: {}
        expect(response.status).to eq(400)
      end

      it "errors if the part_numbers do not contain numbers between 1 and 10000" do
        post "/uploads/batch-presign-multipart-parts.json", params: {
          unique_identifier: external_upload_stub.unique_identifier,
          part_numbers: [-1, 0, 1, 2, 3, 4]
        }
        expect(response.status).to eq(400)
        expect(response.body).to include("You supplied invalid parameters to the request: Each part number should be between 1 and 10000")
        post "/uploads/batch-presign-multipart-parts.json", params: {
          unique_identifier: external_upload_stub.unique_identifier,
          part_numbers: [3, 4, "blah"]
        }
        expect(response.status).to eq(400)
        expect(response.body).to include("You supplied invalid parameters to the request: Each part number should be between 1 and 10000")
      end

      it "returns 404 when the upload stub does not exist" do
        post "/uploads/batch-presign-multipart-parts.json", params: {
          unique_identifier: "unknown",
          part_numbers: [1, 2, 3]
        }
        expect(response.status).to eq(404)
      end

      it "returns 404 when the upload stub does not belong to the user" do
        external_upload_stub.update!(created_by: Fabricate(:user))
        post "/uploads/batch-presign-multipart-parts.json", params: {
          unique_identifier: external_upload_stub.unique_identifier,
          part_numbers: [1, 2, 3]
        }
        expect(response.status).to eq(404)
      end

      it "returns 404 when the multipart upload does not exist" do
        FileStore::S3Store.any_instance.stubs(:list_multipart_parts).raises(Aws::S3::Errors::NoSuchUpload.new("test", "test"))
        post "/uploads/batch-presign-multipart-parts.json", params: {
          unique_identifier: external_upload_stub.unique_identifier,
          part_numbers: [1, 2, 3]
        }
        expect(response.status).to eq(404)
      end

      it "returns an object with the presigned URLs with the part numbers as keys" do
        stub_list_multipart_request
        post "/uploads/batch-presign-multipart-parts.json", params: {
          unique_identifier: external_upload_stub.unique_identifier,
          part_numbers: [2, 3, 4]
        }

        expect(response.status).to eq(200)
        result = response.parsed_body
        expect(result["presigned_urls"].keys).to eq(["2", "3", "4"])
        expect(result["presigned_urls"]["2"]).to include("?partNumber=2&uploadId=#{mock_multipart_upload_id}")
        expect(result["presigned_urls"]["3"]).to include("?partNumber=3&uploadId=#{mock_multipart_upload_id}")
        expect(result["presigned_urls"]["4"]).to include("?partNumber=4&uploadId=#{mock_multipart_upload_id}")
      end

      it "rate limits" do
        RateLimiter.enable
        RateLimiter.clear_all!
        SiteSetting.max_batch_presign_multipart_per_minute = 1

        stub_list_multipart_request
        post "/uploads/batch-presign-multipart-parts.json", params: {
          unique_identifier: external_upload_stub.unique_identifier,
          part_numbers: [1, 2, 3]
        }

        expect(response.status).to eq(200)

        post "/uploads/batch-presign-multipart-parts.json", params: {
          unique_identifier: external_upload_stub.unique_identifier,
          part_numbers: [1, 2, 3]
        }

        expect(response.status).to eq(429)
      end
    end

    context "when the store is not external" do
      before do
        sign_in(user)
      end

      it "returns 404" do
        post "/uploads/batch-presign-multipart-parts.json", params: {
          unique_identifier: external_upload_stub.unique_identifier,
          part_numbers: [1, 2, 3]
        }
        expect(response.status).to eq(404)
      end
    end
  end

  describe "#complete_multipart" do
    let(:upload_base_url) { "https://#{SiteSetting.s3_upload_bucket}.s3.#{SiteSetting.s3_region}.amazonaws.com" }
    let(:mock_multipart_upload_id) { "ibZBv_75gd9r8lH_gqXatLdxMVpAlj6CFTR.OwyF3953YdwbcQnMA2BLGn8Lx12fQNICtMw5KyteFeHw.Sjng--" }
    let!(:external_upload_stub) do
      Fabricate(:image_external_upload_stub, created_by: user, multipart: true, external_upload_identifier: mock_multipart_upload_id)
    end

    context "when the store is external" do
      before do
        sign_in(user)
        SiteSetting.enable_direct_s3_uploads = true
        setup_s3
      end

      def stub_list_multipart_request
        list_multipart_result = <<~XML
        <?xml version=\"1.0\" encoding=\"UTF-8\"?>\n
        <ListPartsResult>
           <Bucket>s3-upload-bucket</Bucket>
           <Key>#{external_upload_stub.key}</Key>
           <UploadId>#{mock_multipart_upload_id}</UploadId>
           <PartNumberMarker>0</PartNumberMarker>
           <NextPartNumberMarker>0</NextPartNumberMarker>
           <MaxParts>1</MaxParts>
           <IsTruncated>false</IsTruncated>
           <Part>
              <ETag>test</ETag>
              <LastModified>#{Time.zone.now}</LastModified>
              <PartNumber>1</PartNumber>
              <Size>#{5.megabytes}</Size>
           </Part>
           <Initiator>
              <DisplayName>test-upload-user</DisplayName>
              <ID>arn:aws:iam::123:user/test-upload-user</ID>
           </Initiator>
           <Owner>
              <DisplayName></DisplayName>
              <ID>12345</ID>
           </Owner>
           <StorageClass>STANDARD</StorageClass>
        </ListPartsResult>
        XML
        stub_request(:get, "#{upload_base_url}/#{external_upload_stub.key}?max-parts=1&uploadId=#{mock_multipart_upload_id}").to_return({ status: 200, body: list_multipart_result })
      end

      it "errors if the correct params are not provided" do
        post "/uploads/complete-multipart.json", params: {}
        expect(response.status).to eq(400)
      end

      it "errors if the part_numbers do not contain numbers between 1 and 10000" do
        stub_list_multipart_request
        post "/uploads/complete-multipart.json", params: {
          unique_identifier: external_upload_stub.unique_identifier,
          parts: [{ part_number: -1, etag: "test1" }]
        }
        expect(response.status).to eq(400)
        expect(response.body).to include("You supplied invalid parameters to the request: Each part number should be between 1 and 10000")
        post "/uploads/complete-multipart.json", params: {
          unique_identifier: external_upload_stub.unique_identifier,
          parts: [{ part_number: 20001, etag: "test1" }]
        }
        expect(response.status).to eq(400)
        expect(response.body).to include("You supplied invalid parameters to the request: Each part number should be between 1 and 10000")
        post "/uploads/complete-multipart.json", params: {
          unique_identifier: external_upload_stub.unique_identifier,
          parts: [{ part_number: "blah", etag: "test1" }]
        }
        expect(response.status).to eq(400)
        expect(response.body).to include("You supplied invalid parameters to the request: Each part number should be between 1 and 10000")
      end

      it "errors if any of the parts objects have missing values" do
        stub_list_multipart_request
        post "/uploads/complete-multipart.json", params: {
          unique_identifier: external_upload_stub.unique_identifier,
          parts: [{ part_number: 1 }]
        }
        expect(response.status).to eq(400)
        expect(response.body).to include("All parts must have an etag")
      end

      it "returns 404 when the upload stub does not exist" do
        post "/uploads/complete-multipart.json", params: {
          unique_identifier: "unknown",
          parts: [{ part_number: 1, etag: "test1" }]
        }
        expect(response.status).to eq(404)
      end

      it "returns 422 when the complete request errors" do
        FileStore::S3Store.any_instance.stubs(:complete_multipart).raises(Aws::S3::Errors::ServiceError.new({}, "test"))
        stub_list_multipart_request
        post "/uploads/complete-multipart.json", params: {
          unique_identifier: external_upload_stub.unique_identifier,
          parts: [{ part_number: 1, etag: "test1" }]
        }
        expect(response.status).to eq(422)
      end

      it "returns 404 when the upload stub does not belong to the user" do
        external_upload_stub.update!(created_by: Fabricate(:user))
        post "/uploads/complete-multipart.json", params: {
          unique_identifier: external_upload_stub.unique_identifier,
          parts: [{ part_number: 1, etag: "test1" }]
        }
        expect(response.status).to eq(404)
      end

      it "returns 404 when the multipart upload does not exist" do
        FileStore::S3Store.any_instance.stubs(:list_multipart_parts).raises(Aws::S3::Errors::NoSuchUpload.new("test", "test"))
        post "/uploads/complete-multipart.json", params: {
          unique_identifier: external_upload_stub.unique_identifier,
          parts: [{ part_number: 1, etag: "test1" }]
        }
        expect(response.status).to eq(404)
      end

      it "completes the multipart upload, creates the Upload record, and returns a serialized Upload record" do
        temp_location = "#{upload_base_url}/#{external_upload_stub.key}"
        stub_list_multipart_request
        stub_request(
          :post,
          "#{temp_location}?uploadId=#{external_upload_stub.external_upload_identifier}"
        ).with(
          body: "<CompleteMultipartUpload xmlns=\"http://s3.amazonaws.com/doc/2006-03-01/\"><Part><ETag>test1</ETag><PartNumber>1</PartNumber></Part><Part><ETag>test2</ETag><PartNumber>2</PartNumber></Part></CompleteMultipartUpload>"
        ).to_return(status: 200, body: <<~XML)
          <?xml version="1.0" encoding="UTF-8"?>
          <CompleteMultipartUploadResult>
             <Location>#{temp_location}</Location>
             <Bucket>s3-upload-bucket</Bucket>
             <Key>#{external_upload_stub.key}</Key>
             <ETag>testfinal</ETag>
          </CompleteMultipartUploadResult>
        XML

        # all the functionality for ExternalUploadManager is already tested along
        # with stubs to S3 in its own test, we can just stub the response here
        upload = Fabricate(:upload)
        ExternalUploadManager.any_instance.stubs(:transform!).returns(upload)

        post "/uploads/complete-multipart.json", params: {
          unique_identifier: external_upload_stub.unique_identifier,
          parts: [{ part_number: 1, etag: "test1" }, { part_number: 2, etag: "test2" }]
        }

        expect(response.status).to eq(200)
        result = response.parsed_body
        expect(result[:upload]).to eq(JSON.parse(UploadSerializer.new(upload).to_json)[:upload])
      end

      it "rate limits" do
        RateLimiter.enable
        RateLimiter.clear_all!

        stub_const(ExternalUploadHelpers, "COMPLETE_MULTIPART_RATE_LIMIT_PER_MINUTE", 1) do
          post "/uploads/complete-multipart.json", params: {
            unique_identifier: "blah",
            parts: [{ part_number: 1, etag: "test1" }, { part_number: 2, etag: "test2" }]
          }
          post "/uploads/complete-multipart.json", params: {
            unique_identifier: "blah",
            parts: [{ part_number: 1, etag: "test1" }, { part_number: 2, etag: "test2" }]
          }
        end
        expect(response.status).to eq(429)
      end
    end

    context "when the store is not external" do
      before do
        sign_in(user)
      end

      it "returns 404" do
        post "/uploads/complete-multipart.json", params: {
          unique_identifier: external_upload_stub.external_upload_identifier,
          parts: [
            {
              part_number: 1,
              etag: "test1"
            },
            {
              part_number: 2,
              etag: "test2"
            }
          ]
        }
        expect(response.status).to eq(404)
      end
    end
  end

  describe "#abort_multipart" do
    let(:upload_base_url) { "https://#{SiteSetting.s3_upload_bucket}.s3.#{SiteSetting.s3_region}.amazonaws.com" }
    let(:mock_multipart_upload_id) { "ibZBv_75gd9r8lH_gqXatLdxMVpAlj6CFTR.OwyF3953YdwbcQnMA2BLGn8Lx12fQNICtMw5KyteFeHw.Sjng--" }
    let!(:external_upload_stub) do
      Fabricate(:image_external_upload_stub, created_by: user, multipart: true, external_upload_identifier: mock_multipart_upload_id)
    end

    context "when the store is external" do
      before do
        sign_in(user)
        SiteSetting.enable_direct_s3_uploads = true
        setup_s3
      end

      def stub_abort_request
        temp_location = "#{upload_base_url}/#{external_upload_stub.key}"
        stub_request(
          :delete,
          "#{temp_location}?uploadId=#{external_upload_stub.external_upload_identifier}"
        ).to_return(status: 200, body: "")
      end

      it "errors if the correct params are not provided" do
        post "/uploads/abort-multipart.json", params: {}
        expect(response.status).to eq(400)
      end

      it "returns 200 when the stub does not exist, assumes it has already been deleted" do
        FileStore::S3Store.any_instance.expects(:abort_multipart).never
        post "/uploads/abort-multipart.json", params: {
          external_upload_identifier: "unknown",
        }
        expect(response.status).to eq(200)
      end

      it "returns 404 when the upload stub does not belong to the user" do
        external_upload_stub.update!(created_by: Fabricate(:user))
        post "/uploads/abort-multipart.json", params: {
          external_upload_identifier: external_upload_stub.external_upload_identifier
        }
        expect(response.status).to eq(404)
      end

      it "aborts the multipart upload and deletes the stub" do
        stub_abort_request

        post "/uploads/abort-multipart.json", params: {
          external_upload_identifier: external_upload_stub.external_upload_identifier
        }

        expect(response.status).to eq(200)
        expect(ExternalUploadStub.exists?(id: external_upload_stub.id)).to eq(false)
      end

      it "returns 422 when the abort request errors" do
        FileStore::S3Store.any_instance.stubs(:abort_multipart).raises(Aws::S3::Errors::ServiceError.new({}, "test"))
        post "/uploads/abort-multipart.json", params: {
          external_upload_identifier: external_upload_stub.external_upload_identifier
        }
        expect(response.status).to eq(422)
      end
    end

    context "when the store is not external" do
      before do
        sign_in(user)
      end

      it "returns 404" do
        post "/uploads/complete-multipart.json", params: {
          unique_identifier: external_upload_stub.external_upload_identifier,
          parts: [
            {
              part_number: 1,
              etag: "test1"
            },
            {
              part_number: 2,
              etag: "test2"
            }
          ]
        }
        expect(response.status).to eq(404)
      end
    end
  end

  describe "#complete_external_upload" do
    before do
      sign_in(user)
    end

    context "when the store is external" do
      fab!(:external_upload_stub) { Fabricate(:image_external_upload_stub, created_by: user) }
      let(:upload) { Fabricate(:upload) }

      before do
        SiteSetting.enable_direct_s3_uploads = true
        SiteSetting.enable_upload_debug_mode = true
        setup_s3
      end

      it "returns 404 when the upload stub does not exist" do
        post "/uploads/complete-external-upload.json", params: { unique_identifier: "unknown" }
        expect(response.status).to eq(404)
      end

      it "returns 404 when the upload stub does not belong to the user" do
        external_upload_stub.update!(created_by: Fabricate(:user))
        post "/uploads/complete-external-upload.json", params: { unique_identifier: external_upload_stub.unique_identifier }
        expect(response.status).to eq(404)
      end

      it "handles ChecksumMismatchError" do
        ExternalUploadManager.any_instance.stubs(:transform!).raises(ExternalUploadManager::ChecksumMismatchError)
        post "/uploads/complete-external-upload.json", params: { unique_identifier: external_upload_stub.unique_identifier }
        expect(response.status).to eq(422)
        expect(response.parsed_body["errors"].first).to eq(I18n.t("upload.failed"))
      end

      it "handles SizeMismatchError" do
        ExternalUploadManager.any_instance.stubs(:transform!).raises(ExternalUploadManager::SizeMismatchError.new("expected: 10, actual: 1000"))
        post "/uploads/complete-external-upload.json", params: { unique_identifier: external_upload_stub.unique_identifier }
        expect(response.status).to eq(422)
        expect(response.parsed_body["errors"].first).to eq(I18n.t("upload.failed"))
      end

      it "handles CannotPromoteError" do
        ExternalUploadManager.any_instance.stubs(:transform!).raises(ExternalUploadManager::CannotPromoteError)
        post "/uploads/complete-external-upload.json", params: { unique_identifier: external_upload_stub.unique_identifier }
        expect(response.status).to eq(422)
        expect(response.parsed_body["errors"].first).to eq(I18n.t("upload.failed"))
      end

      it "handles DownloadFailedError and Aws::S3::Errors::NotFound" do
        ExternalUploadManager.any_instance.stubs(:transform!).raises(ExternalUploadManager::DownloadFailedError)
        post "/uploads/complete-external-upload.json", params: { unique_identifier: external_upload_stub.unique_identifier }
        expect(response.status).to eq(422)
        expect(response.parsed_body["errors"].first).to eq(I18n.t("upload.failed"))
        ExternalUploadManager.any_instance.stubs(:transform!).raises(Aws::S3::Errors::NotFound.new("error", "not found"))
        post "/uploads/complete-external-upload.json", params: { unique_identifier: external_upload_stub.unique_identifier }
        expect(response.status).to eq(422)
        expect(response.parsed_body["errors"].first).to eq(I18n.t("upload.failed"))
      end

      it "handles a generic upload failure" do
        ExternalUploadManager.any_instance.stubs(:transform!).raises(StandardError)
        post "/uploads/complete-external-upload.json", params: { unique_identifier: external_upload_stub.unique_identifier }
        expect(response.status).to eq(422)
        expect(response.parsed_body["errors"].first).to eq(I18n.t("upload.failed"))
      end

      it "handles validation errors on the upload" do
        upload.errors.add(:base, "test error")
        ExternalUploadManager.any_instance.stubs(:transform!).returns(upload)
        post "/uploads/complete-external-upload.json", params: { unique_identifier: external_upload_stub.unique_identifier }
        expect(response.status).to eq(422)
        expect(response.parsed_body["errors"]).to eq(["test error"])
      end

      it "deletes the stub and returns the serialized upload when complete" do
        ExternalUploadManager.any_instance.stubs(:transform!).returns(upload)
        post "/uploads/complete-external-upload.json", params: { unique_identifier: external_upload_stub.unique_identifier }
        expect(ExternalUploadStub.exists?(id: external_upload_stub.id)).to eq(false)
        expect(response.status).to eq(200)
        expect(response.parsed_body).to eq(UploadsController.serialize_upload(upload))
      end
    end

    context "when the store is not external" do
      it "returns 404" do
        post "/uploads/generate-presigned-put.json", params: { file_name: "test.png", type: "card_background" }
        expect(response.status).to eq(404)
      end
    end
  end
end