require 'spec_helper'

describe Import::GithubController do
  let(:user) { create(:user, github_access_token: 'asd123') }

  before do
    sign_in(user)
    controller.stub(:github_import_enabled?).and_return(true)
  end

  describe "GET callback" do
    it "updates access token" do
      token = "asdasd12345"
      allow_any_instance_of(Gitlab::GithubImport::Client).
        to receive(:get_token).and_return(token)
      Gitlab.config.omniauth.providers << OpenStruct.new(app_id: 'asd123',
                                                         app_secret: 'asd123',
                                                         name: 'github')

      get :callback

      expect(user.reload.github_access_token).to eq(token)
      expect(controller).to redirect_to(status_import_github_url)
    end
  end

  describe "GET status" do
    before do
      @repo = OpenStruct.new(login: 'vim', full_name: 'asd/vim')
      @org = OpenStruct.new(login: 'company')
      @org_repo = OpenStruct.new(login: 'company', full_name: 'company/repo')
    end

    it "assigns variables" do
      @project = create(:project, import_type: 'github', creator_id: user.id)
      controller.stub_chain(:client, :repos).and_return([@repo])
      controller.stub_chain(:client, :orgs).and_return([@org])
      controller.stub_chain(:client, :org_repos).with(@org.login).and_return([@org_repo])

      get :status

      expect(assigns(:already_added_projects)).to eq([@project])
      expect(assigns(:repos)).to eq([@repo, @org_repo])
    end

    it "does not show already added project" do
      @project = create(:project, import_type: 'github', creator_id: user.id, import_source: 'asd/vim')
      controller.stub_chain(:client, :repos).and_return([@repo])
      controller.stub_chain(:client, :orgs).and_return([])

      get :status

      expect(assigns(:already_added_projects)).to eq([@project])
      expect(assigns(:repos)).to eq([])
    end
  end

  describe "POST create" do
    let(:github_username) { user.username }

    let(:github_user) {
      OpenStruct.new(login: github_username)
    }

    let(:github_repo) {
      OpenStruct.new(name: 'vim', full_name: "#{github_username}/vim", owner: OpenStruct.new(login: github_username))
    }

    before do
      controller.stub_chain(:client, :user).and_return(github_user)
      controller.stub_chain(:client, :repo).and_return(github_repo)
    end

    context "when the repository owner is the GitHub user" do
      context "when the GitHub user and GitLab user's usernames match" do
        it "takes the current user's namespace" do
          expect(Gitlab::GithubImport::ProjectCreator).
            to receive(:new).with(github_repo, user.namespace, user).
            and_return(double(execute: true))

          post :create, format: :js
        end
      end

      context "when the GitHub user and GitLab user's usernames don't match" do
        let(:github_username) { "someone_else" }

        it "takes the current user's namespace" do
          expect(Gitlab::GithubImport::ProjectCreator).
            to receive(:new).with(github_repo, user.namespace, user).
            and_return(double(execute: true))

          post :create, format: :js
        end
      end
    end

    context "when the repository owner is not the GitHub user" do
      let(:other_username) { "someone_else" }

      before do
        github_repo.owner = OpenStruct.new(login: other_username)
      end

      context "when a namespace with the GitHub user's username already exists" do
        let!(:existing_namespace) { create(:namespace, name: other_username, owner: user) }

        context "when the namespace is owned by the GitLab user" do
          it "takes the existing namespace" do
            expect(Gitlab::GithubImport::ProjectCreator).
              to receive(:new).with(github_repo, existing_namespace, user).
              and_return(double(execute: true))

            post :create, format: :js
          end
        end

        context "when the namespace is not owned by the GitLab user" do
          before do
            existing_namespace.owner = create(:user)
            existing_namespace.save
          end

          it "doesn't create a project" do
            expect(Gitlab::GithubImport::ProjectCreator).
              not_to receive(:new)

            post :create, format: :js
          end
        end
      end

      context "when a namespace with the GitHub user's username doesn't exist" do
        it "creates the namespace" do
          expect(Gitlab::GithubImport::ProjectCreator).
            to receive(:new).and_return(double(execute: true))

          post :create, format: :js

          expect(Namespace.where(name: other_username).first).not_to be_nil
        end

        it "takes the new namespace" do
          expect(Gitlab::GithubImport::ProjectCreator).
            to receive(:new).with(github_repo, an_instance_of(Group), user).
            and_return(double(execute: true))

          post :create, format: :js
        end
      end
    end
  end
end