#-- copyright
# OpenProject is a project management system.
# Copyright (C) 2012-2015 the OpenProject Foundation (OPF)
#
# 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 doc/COPYRIGHT.rdoc for more details.
#++

require 'spec_helper'

module OpenProject
  describe I18n, type: :helper do
    include Redmine::I18n

    let(:format) { '%d/%m/%Y' }

    after do
      Time.zone = nil
    end

    describe 'with user time zone' do
      before do allow(User.current).to receive(:time_zone).and_return(ActiveSupport::TimeZone['Athens']) end
      it 'returns a date in the user timezone for a utc timestamp' do
        Time.zone = 'UTC'
        time = Time.zone.local(2013, 06, 30, 23, 59)
        expect(format_time_as_date(time, format)).to eq '01/07/2013'
      end

      it 'returns a date in the user timezone for a non-utc timestamp' do
        Time.zone = 'Berlin'
        time = Time.zone.local(2013, 06, 30, 23, 59)
        expect(format_time_as_date(time, format)).to eq '01/07/2013'
      end
    end

    describe 'without user time zone' do
      before do allow(User.current).to receive(:time_zone).and_return(nil) end

      it 'returns a date in the local system timezone for a utc timestamp' do
        Time.zone = 'UTC'
        time = Time.zone.local(2013, 06, 30, 23, 59)
        allow(time).to receive(:localtime).and_return(ActiveSupport::TimeZone['Athens'].local(2013, 07, 01, 01, 59))
        expect(format_time_as_date(time, format)).to eq '01/07/2013'
      end

      it 'returns a date in the original timezone for a non-utc timestamp' do
        Time.zone = 'Berlin'
        time = Time.zone.local(2013, 06, 30, 23, 59)
        expect(format_time_as_date(time, format)).to eq '30/06/2013'
      end
    end

    describe 'all_languages' do
      # Those are the two languages we support
      it 'includes en' do
        expect(all_languages).to include(:en)
      end
      it 'includes de' do
        expect(all_languages).to include(:de)
      end

      it 'should return no js language as they are duplicates of the rest of the other language' do
        expect(all_languages.any? { |l| /\Ajs-/.match(l.to_s) }).to be_falsey
      end

      # it is OK if more languages exist
      it 'has a language for every language file' do
        lang_files_count = Dir.glob(Rails.root.join('config/locales/*.yml'))
                           .map { |f| File.basename(f) }
                           .reject { |b| b.starts_with? 'js' }
                           .size

        expect(all_languages.size).to eql lang_files_count
      end
    end

    describe 'valid_languages' do
      it 'allows only languages that are available' do
        allow(Setting).to receive(:available_languages).and_return([:en])

        expect(valid_languages).to eql [:en]
      end

      it 'allows only languages that exist' do
        allow(Setting).to receive(:available_languages).and_return([:'123'])

        expect(valid_languages).to be_empty
      end
    end

    describe 'set_language_if_valid' do
      before do
        allow(Setting).to receive(:available_languages).and_return(Setting.all_languages)
      end

      Setting.all_languages.each do |lang|
        it "should set I18n.locale to #{lang}" do
          allow(I18n).to receive(:locale=)
          expect(I18n).to receive(:locale=).with(lang)

          set_language_if_valid(lang)
        end
      end

      it 'should not set I18n.locale to an invalid language' do
        allow(Setting).to receive(:available_languages).and_return([:en])

        expect(I18n).not_to receive(:locale=).with(:de)
      end
    end

    describe 'find_language' do
      before do
        allow(Setting).to receive(:available_languages).and_return([:de])
      end

      it 'is nil if language is not active' do
        expect(find_language(:en)).to be_nil
      end

      it 'is nil if no language is given' do
        expect(find_language('')).to be_nil
        expect(find_language(nil)).to be_nil
      end

      it 'is the language if it is active' do
        expect(find_language(:de)).to eql :de
      end

      it 'can be found by uppercase if it is active' do
        expect(find_language(:DE)).to eql :de
      end
    end
  end
end