require "rails_helper"

RSpec.describe CollectionResourcesController, type: :request do
  let(:page) { Capybara::Node::Simple.new(response.body) }
  let(:storage_service) { instance_double(Storage::S3Service, get_file_metadata: nil) }

  before do
    allow(Storage::S3Service).to receive(:new).and_return(storage_service)
    allow(storage_service).to receive(:configuration).and_return(OpenStruct.new(bucket_name: "core-test-collection-resources"))
  end

  describe "GET #index" do
    context "when user is not signed in" do
      it "redirects to the sign in page" do
        get collection_resources_path
        expect(response).to redirect_to(new_user_session_path)
      end
    end

    context "when user is signed in as a data coordinator" do
      let(:user) { create(:user, :data_coordinator) }

      before do
        sign_in user
      end

      it "returns page not found" do
        get collection_resources_path
        expect(response).to have_http_status(:not_found)
      end
    end

    context "when user is signed in as a data provider" do
      let(:user) { create(:user, :data_provider) }

      before do
        sign_in user
      end

      it "returns page not found" do
        get collection_resources_path
        expect(response).to have_http_status(:not_found)
      end
    end

    context "when user is signed in as a support user" do
      let(:user) { create(:user, :support) }

      before do
        allow(Time.zone).to receive(:today).and_return(Time.zone.local(2025, 1, 8))
        allow(user).to receive(:need_two_factor_authentication?).and_return(false)
        allow(storage_service).to receive(:file_exists?).and_return(true)
        sign_in user
      end

      it "displays collection resources" do
        get collection_resources_path

        expect(page).to have_content("Lettings 2024 to 2025")
        expect(page).to have_content("Lettings 2025 to 2026")
        expect(page).to have_content("Sales 2024 to 2025")
        expect(page).to have_content("Sales 2025 to 2026")
      end

      it "displays mandatory filed" do
        get collection_resources_path

        expect(page).to have_content("Paper form")
        expect(page).to have_content("Bulk upload template")
        expect(page).to have_content("Bulk upload specification")
      end

      context "when files are on S3" do
        before do
          allow(storage_service).to receive(:file_exists?).and_return(true)
          get collection_resources_path
        end

        it "displays file names with download links" do
          expect(page).to have_link("2024_25_lettings_paper_form.pdf", href: download_mandatory_collection_resource_path(year: 2024, log_type: "lettings", resource_type: "paper_form"))
          expect(page).to have_link("bulk-upload-lettings-template-2024-25.xlsx", href: download_mandatory_collection_resource_path(year: 2024, log_type: "lettings", resource_type: "bulk_upload_template"))
          expect(page).to have_link("bulk-upload-lettings-specification-2024-25.xlsx", href: download_mandatory_collection_resource_path(year: 2024, log_type: "lettings", resource_type: "bulk_upload_specification"))
          expect(page).to have_link("2024_25_sales_paper_form.pdf", href: download_mandatory_collection_resource_path(year: 2024, log_type: "sales", resource_type: "paper_form"))
          expect(page).to have_link("bulk-upload-sales-template-2024-25.xlsx", href: download_mandatory_collection_resource_path(year: 2024, log_type: "sales", resource_type: "bulk_upload_template"))
          expect(page).to have_link("bulk-upload-sales-specification-2024-25.xlsx", href: download_mandatory_collection_resource_path(year: 2024, log_type: "sales", resource_type: "bulk_upload_specification"))

          expect(page).to have_link("2025_26_lettings_paper_form.pdf", href: download_mandatory_collection_resource_path(year: 2025, log_type: "lettings", resource_type: "paper_form"))
          expect(page).to have_link("bulk-upload-lettings-template-2025-26.xlsx", href: download_mandatory_collection_resource_path(year: 2025, log_type: "lettings", resource_type: "bulk_upload_template"))
          expect(page).to have_link("bulk-upload-lettings-specification-2025-26.xlsx", href: download_mandatory_collection_resource_path(year: 2025, log_type: "lettings", resource_type: "bulk_upload_specification"))
          expect(page).to have_link("2025_26_sales_paper_form.pdf", href: download_mandatory_collection_resource_path(year: 2025, log_type: "sales", resource_type: "paper_form"))
          expect(page).to have_link("bulk-upload-sales-template-2025-26.xlsx", href: download_mandatory_collection_resource_path(year: 2025, log_type: "sales", resource_type: "bulk_upload_template"))
          expect(page).to have_link("bulk-upload-sales-specification-2025-26.xlsx", href: download_mandatory_collection_resource_path(year: 2025, log_type: "sales", resource_type: "bulk_upload_specification"))
        end

        it "displays change links" do
          expect(page).to have_selector(:link_or_button, "Change", count: 12)
          expect(page).to have_link("Change", href: edit_mandatory_collection_resource_path(year: 2024, log_type: "lettings", resource_type: "paper_form"))
          expect(page).to have_link("Change", href: edit_mandatory_collection_resource_path(year: 2024, log_type: "lettings", resource_type: "bulk_upload_template"))
          expect(page).to have_link("Change", href: edit_mandatory_collection_resource_path(year: 2024, log_type: "lettings", resource_type: "bulk_upload_specification"))
          expect(page).to have_link("Change", href: edit_mandatory_collection_resource_path(year: 2024, log_type: "sales", resource_type: "paper_form"))
          expect(page).to have_link("Change", href: edit_mandatory_collection_resource_path(year: 2024, log_type: "sales", resource_type: "bulk_upload_template"))
          expect(page).to have_link("Change", href: edit_mandatory_collection_resource_path(year: 2024, log_type: "sales", resource_type: "bulk_upload_specification"))

          expect(page).to have_link("Change", href: edit_mandatory_collection_resource_path(year: 2025, log_type: "lettings", resource_type: "paper_form"))
          expect(page).to have_link("Change", href: edit_mandatory_collection_resource_path(year: 2025, log_type: "lettings", resource_type: "bulk_upload_template"))
          expect(page).to have_link("Change", href: edit_mandatory_collection_resource_path(year: 2025, log_type: "lettings", resource_type: "bulk_upload_specification"))
          expect(page).to have_link("Change", href: edit_mandatory_collection_resource_path(year: 2025, log_type: "sales", resource_type: "paper_form"))
          expect(page).to have_link("Change", href: edit_mandatory_collection_resource_path(year: 2025, log_type: "sales", resource_type: "bulk_upload_template"))
          expect(page).to have_link("Change", href: edit_mandatory_collection_resource_path(year: 2025, log_type: "sales", resource_type: "bulk_upload_specification"))
        end

        it "displays next year banner" do
          expect(page).to have_content("The 2025 to 2026 collection resources are not yet available to users.")
          expect(page).to have_link("Release the 2025 to 2026 collection resources to users", href: confirm_mandatory_collection_resources_release_path(year: 2025))
        end
      end

      context "when files are not on S3" do
        before do
          allow(storage_service).to receive(:file_exists?).and_return(false)
          get collection_resources_path
        end

        it "displays No file uploaded" do
          expect(page).to have_content("No file uploaded")
        end

        it "displays upload links" do
          expect(page).to have_selector(:link_or_button, "Upload", count: 12)
          expect(page).to have_link("Upload", href: edit_mandatory_collection_resource_path(year: 2024, log_type: "lettings", resource_type: "paper_form"))
          expect(page).to have_link("Upload", href: edit_mandatory_collection_resource_path(year: 2024, log_type: "lettings", resource_type: "bulk_upload_template"))
          expect(page).to have_link("Upload", href: edit_mandatory_collection_resource_path(year: 2024, log_type: "lettings", resource_type: "bulk_upload_specification"))
          expect(page).to have_link("Upload", href: edit_mandatory_collection_resource_path(year: 2024, log_type: "sales", resource_type: "paper_form"))
          expect(page).to have_link("Upload", href: edit_mandatory_collection_resource_path(year: 2024, log_type: "sales", resource_type: "bulk_upload_template"))
          expect(page).to have_link("Upload", href: edit_mandatory_collection_resource_path(year: 2024, log_type: "sales", resource_type: "bulk_upload_specification"))

          expect(page).to have_link("Upload", href: edit_mandatory_collection_resource_path(year: 2025, log_type: "lettings", resource_type: "paper_form"))
          expect(page).to have_link("Upload", href: edit_mandatory_collection_resource_path(year: 2025, log_type: "lettings", resource_type: "bulk_upload_template"))
          expect(page).to have_link("Upload", href: edit_mandatory_collection_resource_path(year: 2025, log_type: "lettings", resource_type: "bulk_upload_specification"))
          expect(page).to have_link("Upload", href: edit_mandatory_collection_resource_path(year: 2025, log_type: "sales", resource_type: "paper_form"))
          expect(page).to have_link("Upload", href: edit_mandatory_collection_resource_path(year: 2025, log_type: "sales", resource_type: "bulk_upload_template"))
          expect(page).to have_link("Upload", href: edit_mandatory_collection_resource_path(year: 2025, log_type: "sales", resource_type: "bulk_upload_specification"))
        end

        it "displays next year banner" do
          expect(page).to have_content("The 2025 to 2026 collection resources are not yet available to users.")
          expect(page).to have_content("Once you have uploaded all the required 2025 to 2026 collection resources, you will be able to release them to users.")
        end
      end
    end
  end

  describe "GET #download_mandatory_collection_resource" do
    before do
      # rubocop:disable RSpec/AnyInstance
      allow_any_instance_of(CollectionResourcesHelper).to receive(:editable_collection_resource_years).and_return([2025, 2026])
      allow_any_instance_of(CollectionResourcesHelper).to receive(:displayed_collection_resource_years).and_return([2025])
      # rubocop:enable RSpec/AnyInstance
      allow(user).to receive(:need_two_factor_authentication?).and_return(false)
      sign_in user
    end

    context "when user is signed in as a data coordinator" do
      let(:user) { create(:user, :data_coordinator) }

      context "when the file exists on S3" do
        before do
          allow(storage_service).to receive(:get_file).and_return("file")
          get download_mandatory_collection_resource_path(log_type: "lettings", year: 2025, resource_type: "paper_form")
        end

        it "downloads the file" do
          expect(response.body).to eq("file")
        end
      end

      context "when the file does not exist on S3" do
        before do
          allow(storage_service).to receive(:get_file).and_return(nil)
          get download_mandatory_collection_resource_path(log_type: "lettings", year: 2024, resource_type: "paper_form")
        end

        it "returns page not found" do
          expect(response).to have_http_status(:not_found)
        end
      end

      context "when resource isn't a mandatory resources" do
        before do
          get download_mandatory_collection_resource_path(log_type: "lettings", year: 2024, resource_type: "invalid_resource")
        end

        it "returns page not found" do
          expect(response).to have_http_status(:not_found)
        end
      end

      context "when year not in displayed_collection_resource_years" do
        before do
          get download_mandatory_collection_resource_path(log_type: "lettings", year: 2026, resource_type: "paper_form")
        end

        it "returns page not found" do
          expect(response).to have_http_status(:not_found)
        end
      end
    end

    context "when user is signed in as a support user" do
      let(:user) { create(:user, :support) }

      context "when year is in editable_collection_resource_years but not in displayed_collection_resource_years" do
        before do
          allow(storage_service).to receive(:get_file).and_return("file")
          get download_mandatory_collection_resource_path(log_type: "lettings", year: 2026, resource_type: "paper_form")
        end

        it "downloads the file" do
          expect(response.status).to eq(200)
          expect(response.body).to eq("file")
        end
      end
    end
  end

  describe "GET #edit_mandatory_collection_resource" do
    context "when user is not signed in" do
      it "redirects to the sign in page" do
        get edit_mandatory_collection_resource_path(year: 2024, log_type: "sales", resource_type: "bulk_upload_template")
        expect(response).to redirect_to(new_user_session_path)
      end
    end

    context "when user is signed in as a data coordinator" do
      let(:user) { create(:user, :data_coordinator) }

      before do
        sign_in user
      end

      it "returns page not found" do
        get edit_mandatory_collection_resource_path(year: 2024, log_type: "sales", resource_type: "bulk_upload_template")
        expect(response).to have_http_status(:not_found)
      end
    end

    context "when user is signed in as a data provider" do
      let(:user) { create(:user, :data_provider) }

      before do
        sign_in user
      end

      it "returns page not found" do
        get edit_mandatory_collection_resource_path(year: 2024, log_type: "sales", resource_type: "bulk_upload_template")
        expect(response).to have_http_status(:not_found)
      end
    end

    context "when user is signed in as a support user" do
      let(:user) { create(:user, :support) }

      before do
        allow(Time.zone).to receive(:today).and_return(Time.zone.local(2025, 1, 8))
        allow(user).to receive(:need_two_factor_authentication?).and_return(false)
        sign_in user
      end

      context "and the file exists on S3" do
        before do
          allow(storage_service).to receive(:file_exists?).and_return(true)
        end

        it "displays update collection resources page content" do
          get edit_mandatory_collection_resource_path(year: 2024, log_type: "sales", resource_type: "bulk_upload_template")

          expect(page).to have_content("Sales 2024 to 2025")
          expect(page).to have_content("Change the bulk upload template")
          expect(page).to have_content("This file will be available for all users to download.")
          expect(page).to have_content("Upload file")
          expect(page).to have_button("Save changes")
          expect(page).to have_link("Back", href: collection_resources_path)
          expect(page).to have_link("Cancel", href: collection_resources_path)
        end
      end

      context "and the file does not exist on S3" do
        before do
          allow(storage_service).to receive(:file_exists?).and_return(false)
        end

        it "displays upload collection resources page content" do
          get edit_mandatory_collection_resource_path(year: 2024, log_type: "sales", resource_type: "bulk_upload_template")

          expect(page).to have_content("Sales 2024 to 2025")
          expect(page).to have_content("Upload the bulk upload template")
          expect(page).to have_content("This file will be available for all users to download.")
          expect(page).to have_content("Upload file")
          expect(page).to have_button("Upload")
          expect(page).to have_link("Back", href: collection_resources_path)
          expect(page).to have_link("Cancel", href: collection_resources_path)
        end
      end
    end
  end

  describe "PATCH #update_mandatory_collection_resource" do
    let(:some_file) { File.open(file_fixture("blank_bulk_upload_sales.csv")) }
    let(:params) { { collection_resource: { year: 2024, log_type: "sales", resource_type: "bulk_upload_template", file: some_file } } }
    let(:collection_resource_service) { instance_double(CollectionResourcesService) }

    before do
      allow(CollectionResourcesService).to receive(:new).and_return(collection_resource_service)
    end

    context "when user is not signed in" do
      it "redirects to the sign in page" do
        patch update_mandatory_collection_resource_path(year: 2024, log_type: "sales", resource_type: "bulk_upload_template", file: some_file)
        expect(response).to redirect_to(new_user_session_path)
      end
    end

    context "when user is signed in as a data coordinator" do
      let(:user) { create(:user, :data_coordinator) }

      before do
        sign_in user
      end

      it "returns page not found" do
        patch update_mandatory_collection_resource_path, params: params
        expect(response).to have_http_status(:not_found)
      end
    end

    context "when user is signed in as a data provider" do
      let(:user) { create(:user, :data_provider) }

      before do
        sign_in user
      end

      it "returns page not found" do
        patch update_mandatory_collection_resource_path, params: params
        expect(response).to have_http_status(:not_found)
      end
    end
  end

  describe "GET #confirm_mandatory_collection_resources_release" do
    context "when user is not signed in" do
      it "redirects to the sign in page" do
        get confirm_mandatory_collection_resources_release_path(year: 2025)
        expect(response).to redirect_to(new_user_session_path)
      end
    end

    context "when user is signed in as a data coordinator" do
      let(:user) { create(:user, :data_coordinator) }

      before do
        sign_in user
      end

      it "returns page not found" do
        get confirm_mandatory_collection_resources_release_path(year: 2025)
        expect(response).to have_http_status(:not_found)
      end
    end

    context "when user is signed in as a data provider" do
      let(:user) { create(:user, :data_provider) }

      before do
        sign_in user
      end

      it "returns page not found" do
        get confirm_mandatory_collection_resources_release_path(year: 2025)
        expect(response).to have_http_status(:not_found)
      end
    end

    context "when user is signed in as a support user" do
      let(:user) { create(:user, :support) }

      before do
        # rubocop:disable RSpec/AnyInstance
        allow_any_instance_of(CollectionResourcesHelper).to receive(:editable_collection_resource_years).and_return([2025])
        # rubocop:enable RSpec/AnyInstance
        allow(user).to receive(:need_two_factor_authentication?).and_return(false)
        sign_in user
      end

      it "displays correct page content" do
        get confirm_mandatory_collection_resources_release_path(year: 2025)

        expect(page).to have_content("Are you sure you want to release the 2025 to 2026 collection resources?")
        expect(page).to have_content("The files uploaded will immediately become available for users to download.")
        expect(page).to have_content("You will not be able to undo this action.")
        expect(page).to have_button("Release the resources")
        expect(page).to have_link("Cancel", href: collection_resources_path)
        expect(page).to have_link("Back", href: collection_resources_path)
      end
    end
  end

  describe "PATCH #release_mandatory_collection_resources_path" do
    let(:some_file) { File.open(file_fixture("blank_bulk_upload_sales.csv")) }
    let(:collection_resource_service) { instance_double(CollectionResourcesService) }

    before do
      allow(CollectionResourcesService).to receive(:new).and_return(collection_resource_service)
    end

    context "when user is not signed in" do
      it "redirects to the sign in page" do
        patch release_mandatory_collection_resources_path(year: 2024)
        expect(response).to redirect_to(new_user_session_path)
      end
    end

    context "when user is signed in as a data coordinator" do
      let(:user) { create(:user, :data_coordinator) }

      before do
        sign_in user
      end

      it "returns page not found" do
        patch release_mandatory_collection_resources_path(year: 2024)
        expect(response).to have_http_status(:not_found)
      end
    end

    context "when user is signed in as a data provider" do
      let(:user) { create(:user, :data_provider) }

      before do
        sign_in user
      end

      it "returns page not found" do
        patch release_mandatory_collection_resources_path(year: 2024)
        expect(response).to have_http_status(:not_found)
      end
    end

    context "when user is signed in as a support user" do
      let(:user) { create(:user, :support) }

      before do
        # rubocop:disable RSpec/AnyInstance
        allow_any_instance_of(CollectionResourcesHelper).to receive(:editable_collection_resource_years).and_return([2025])
        # rubocop:enable RSpec/AnyInstance
        allow(user).to receive(:need_two_factor_authentication?).and_return(false)
        sign_in user
      end

      it "saves resources as released to users" do
        expect(CollectionResource.where(year: 2025, mandatory: true, released_to_user: true).count).to eq(0)

        patch release_mandatory_collection_resources_path(year: 2025)
        expect(CollectionResource.all.count).to eq(6)
        expect(CollectionResource.where(year: 2025, mandatory: true, released_to_user: true, log_type: "sales", resource_type: "paper_form").count).to eq(1)
        expect(CollectionResource.where(year: 2025, mandatory: true, released_to_user: true, log_type: "sales", resource_type: "bulk_upload_template").count).to eq(1)
        expect(CollectionResource.where(year: 2025, mandatory: true, released_to_user: true, log_type: "sales", resource_type: "bulk_upload_specification").count).to eq(1)
        expect(CollectionResource.where(year: 2025, mandatory: true, released_to_user: true, log_type: "lettings", resource_type: "paper_form").count).to eq(1)
        expect(CollectionResource.where(year: 2025, mandatory: true, released_to_user: true, log_type: "lettings", resource_type: "bulk_upload_template").count).to eq(1)
        expect(CollectionResource.where(year: 2025, mandatory: true, released_to_user: true, log_type: "lettings", resource_type: "bulk_upload_specification").count).to eq(1)
        expect(response).to redirect_to(collection_resources_path)
        expect(flash[:notice]).to eq("The 2025 to 2026 collection resources are now available to users.")
      end
    end
  end
end