#-- copyright
# OpenProject is an open source project management software.
# Copyright (C) 2012-2021 the OpenProject GmbH
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License version 3.
#
# OpenProject is a fork of ChiliProject, which is a fork of Redmine. The copyright follows:
# Copyright (C) 2006-2013 Jean-Philippe Lang
# Copyright (C) 2010-2013 the ChiliProject Team
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License
# as published by the Free Software Foundation; either version 2
# of the License, or (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
#
# See docs/COPYRIGHT.rdoc for more details.
#++

require_relative '../spec_helper'

describe MeetingMailer, type: :mailer do
  shared_let(:role) { FactoryBot.create(:role, permissions: [:view_meetings]) }
  shared_let(:project) { FactoryBot.create(:project, name: 'My project') }
  shared_let(:author) do
    FactoryBot.create :user,
                      member_in_project: project,
                      member_through_role: role,
                      preferences: { time_zone: 'Europe/Berlin' }
  end
  shared_let(:watcher1) { FactoryBot.create(:user, member_in_project: project, member_through_role: role) }
  shared_let(:watcher2) { FactoryBot.create(:user, member_in_project: project, member_through_role: role) }

  let(:meeting) do
    FactoryBot.create :meeting,
                      author: author,
                      project: project
  end
  let(:meeting_agenda) do
    FactoryBot.create(:meeting_agenda, meeting: meeting)
  end

  before do
    meeting.participants.merge([meeting.participants.build(user: watcher1, invited: true, attended: false),
                                meeting.participants.build(user: watcher2, invited: true, attended: false)])
    meeting.save!
  end

  describe 'content_for_review' do
    let(:mail) { described_class.content_for_review meeting_agenda, 'meeting_agenda', author }
    # this is needed to call module functions from Redmine::I18n
    let(:i18n) do
      Class.new do
        include Redmine::I18n
        public :format_date, :format_time
      end
    end

    it 'renders the headers' do
      expect(mail.subject).to include(meeting.project.name)
      expect(mail.subject).to include(meeting.title)
      expect(mail.to).to match_array([author.mail])
      expect(mail.from).to eq([Setting.mail_from])
    end

    it 'renders the text body' do
      check_meeting_mail_content mail.text_part.body
    end

    it 'renders the html body' do
      check_meeting_mail_content mail.html_part.body
    end

    context 'with a recipient with another time zone' do
      let!(:preference) { FactoryBot.create(:user_preference, user: watcher1, time_zone: 'Asia/Tokyo') }
      let(:mail) { described_class.content_for_review meeting_agenda, 'meeting_agenda', watcher1 }

      it 'renders the mail with the correcet locale' do
        expect(mail.text_part.body).to include('Tokyo')
        expect(mail.text_part.body).to include('GMT+09:00')
        expect(mail.html_part.body).to include('Tokyo')
        expect(mail.html_part.body).to include('GMT+09:00')

        expect(mail.to).to match_array([watcher1.mail])
      end
    end
  end

  describe 'icalendar' do
    let(:meeting) do
      FactoryBot.create :meeting,
                        author: author,
                        project: project,
                        title: 'Important meeting',
                        start_time: "2021-01-19T10:00:00Z".to_time(:utc),
                        duration: 1.0
    end
    let(:mail) { described_class.icalendar_notification meeting_agenda, 'meeting_agenda', author }

    it 'renders the headers' do
      expect(mail.subject).to include(meeting.project.name)
      expect(mail.subject).to include(meeting.title)
      expect(mail.to).to match_array([author.mail])
      expect(mail.from).to eq([Setting.mail_from])
    end

    describe 'text body' do
      subject(:body) { mail.text_part.body }

      it 'renders the text body' do
        expect(body).to include(meeting.project.name)
        expect(body).to include(meeting.title)
        expect(body).to include('01/19/2021 11:00 AM-12:00 PM (GMT+01:00) Europe/Berlin')
        expect(body).to include(meeting.participants[0].name)
        expect(body).to include(meeting.participants[1].name)
      end
    end

    describe 'renders the html body' do
      subject(:body) { mail.html_part.body }

      it 'renders the text body' do
        expect(body).to include(meeting.project.name)
        expect(body).to include(meeting.title)
        expect(body).to include('01/19/2021 11:00 AM-12:00 PM (GMT+01:00) Europe/Berlin')
        expect(body).to include(meeting.participants[0].name)
        expect(body).to include(meeting.participants[1].name)
      end
    end

    describe 'renders the calendar entry' do
      let(:ical) { mail.parts.detect { |x| !x.multipart? } }
      let(:parsed) { Icalendar::Event.parse(ical.body.raw_source) }
      let(:entry) { parsed.first }

      it 'renders the calendar entry' do
        expect(parsed).to be_a Array
        expect(parsed.length).to eq 1

        expect(entry.dtstart.utc).to eq meeting.start_time
        expect(entry.dtend.utc).to eq meeting.start_time + 1.hour
        expect(entry.summary).to eq '[My project] Important meeting'
        expect(entry.description).to eq "[My project] Agenda: Important meeting"
      end
    end

    context 'with a recipient with another time zone' do
      let!(:preference) { FactoryBot.create(:user_preference, user: watcher1, time_zone: 'Asia/Tokyo') }
      let(:mail) { described_class.content_for_review meeting_agenda, 'meeting_agenda', watcher1 }

      it 'renders the mail with the correcet locale' do
        expect(mail.text_part.body).to include('01/19/2021 07:00 PM-08:00 PM (GMT+09:00) Asia/Tokyo')
        expect(mail.html_part.body).to include('01/19/2021 07:00 PM-08:00 PM (GMT+09:00) Asia/Tokyo')

        expect(mail.to).to match_array([watcher1.mail])
      end
    end
  end

  def check_meeting_mail_content(body)
    expect(body).to include(meeting.project.name)
    expect(body).to include(meeting.title)
    expect(body).to include(i18n.format_date(meeting.start_date))
    expect(body).to include(i18n.format_time(meeting.start_time, false))
    expect(body).to include(i18n.format_time(meeting.end_time, false))
    expect(body).to include(meeting.participants[0].name)
    expect(body).to include(meeting.participants[1].name)
  end
end