# frozen_string_literal: true
require 'spec_helper'

RSpec.describe Wikis::CreateAttachmentService do
  let(:container) { create(:project, :wiki_repo) }
  let(:user) { create(:user) }
  let(:file_name) { 'filename.txt' }
  let(:file_path_regex) { %r{#{described_class::ATTACHMENT_PATH}/\h{32}/#{file_name}} }

  let(:file_opts) do
    {
      file_name: file_name,
      file_content: 'Content of attachment'
    }
  end

  let(:opts) { file_opts }

  subject(:service) { described_class.new(container: container, current_user: user, params: opts) }

  before do
    container.add_developer(user)
  end

  describe 'initialization' do
    context 'author commit info' do
      it 'does not raise error if user is nil' do
        service = described_class.new(container: container, current_user: nil, params: opts)

        expect(service.instance_variable_get(:@author_email)).to be_nil
        expect(service.instance_variable_get(:@author_name)).to be_nil
      end

      context 'when no author info provided' do
        it 'fills author_email and author_name from current_user info' do
          expect(service.instance_variable_get(:@author_email)).to eq user.email
          expect(service.instance_variable_get(:@author_name)).to eq user.name
        end
      end

      context 'when author info provided' do
        let(:author_email) { 'author_email' }
        let(:author_name) { 'author_name' }
        let(:opts) { file_opts.merge(author_email: author_email, author_name: author_name) }

        it 'fills author_email and author_name from params' do
          expect(service.instance_variable_get(:@author_email)).to eq author_email
          expect(service.instance_variable_get(:@author_name)).to eq author_name
        end
      end
    end

    context 'commit message' do
      context 'when no commit message provided' do
        it 'sets a default commit message' do
          expect(service.instance_variable_get(:@commit_message)).to eq "Upload attachment #{opts[:file_name]}"
        end
      end

      context 'when commit message provided' do
        let(:commit_message) { 'whatever' }
        let(:opts) { file_opts.merge(commit_message: commit_message) }

        it 'use the commit message from params' do
          expect(service.instance_variable_get(:@commit_message)).to eq commit_message
        end
      end
    end

    context 'branch name' do
      context 'when no branch provided' do
        it 'sets the branch from the wiki default_branch' do
          expect(service.instance_variable_get(:@branch_name)).to eq container.wiki.default_branch
        end
      end

      context 'when branch provided' do
        let(:branch_name) { 'whatever' }
        let(:opts) { file_opts.merge(branch_name: branch_name) }

        it 'use the commit message from params' do
          expect(service.instance_variable_get(:@branch_name)).to eq branch_name
        end
      end
    end
  end

  describe '#parse_file_name' do
    context 'when file_name' do
      context 'has white spaces' do
        let(:file_name) { 'file with spaces' }

        it "replaces all of them with '_'" do
          result = service.execute

          expect(result[:status]).to eq :success
          expect(result[:result][:file_name]).to eq 'file_with_spaces'
        end
      end

      context 'has other invalid characters' do
        let(:file_name) { "file\twith\tinvalid chars" }

        it "replaces all of them with '_'" do
          result = service.execute

          expect(result[:status]).to eq :success
          expect(result[:result][:file_name]).to eq 'file_with_invalid_chars'
        end
      end

      context 'is not present' do
        let(:file_name) { nil }

        it 'returns error' do
          result = service.execute

          expect(result[:status]).to eq :error
          expect(result[:message]).to eq 'The file name cannot be empty'
        end
      end

      context 'length' do
        context 'is bigger than 255' do
          let(:file_name) { "#{'0' * 256}.jpg" }

          it 'truncates file name' do
            result = service.execute

            expect(result[:status]).to eq :success
            expect(result[:result][:file_name].length).to eq 255
            expect(result[:result][:file_name]).to match(/0{251}\.jpg/)
          end
        end

        context 'is less or equal to 255 does not return error' do
          let(:file_name) { '0' * 255 }

          it 'does not return error' do
            result = service.execute

            expect(result[:status]).to eq :success
          end
        end
      end
    end

    context 'when user' do
      shared_examples 'wiki attachment user validations' do
        it 'returns error' do
          result = described_class.new(container: container, current_user: user2, params: opts).execute

          expect(result[:status]).to eq :error
          expect(result[:message]).to eq 'You are not allowed to push to the wiki'
        end
      end

      context 'does not have permission' do
        let(:user2) { create(:user) }

        it_behaves_like 'wiki attachment user validations'
      end

      context 'is nil' do
        let(:user2) { nil }

        it_behaves_like 'wiki attachment user validations'
      end
    end
  end

  it_behaves_like 'Wikis::CreateAttachmentService#execute', :project
end