# frozen_string_literal: true

#
# Copyright (C) 2011 - present Instructure, Inc.
#
# This file is part of Canvas.
#
# Canvas is free software: you can redistribute it and/or modify it under
# the terms of the GNU Affero General Public License as published by the Free
# Software Foundation, version 3 of the License.
#
# Canvas 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 Affero General Public License for more
# details.
#
# You should have received a copy of the GNU Affero General Public License along
# with this program. If not, see <http://www.gnu.org/licenses/>.
#

shared_examples_for "url validation tests" do
  def test_url_validation(model)
    # should add http://
    model.url = "example.com"
    model.save!
    expect(model.errors.size).to eq 0
    expect(model.url).to eq "http://example.com"

    # should remove whitespace
    model.url = "   example.com  "
    model.save!
    expect(model.errors.size).to eq 0
    expect(model.url).to eq "http://example.com"

    model.url = "   http://www.example.com  "
    model.save!
    expect(model.errors.size).to eq 0
    expect(model.url).to eq "http://www.example.com"

    # should encode unicode
    model.url = "http://example.com/ø"
    model.save!
    expect(model.errors.size).to eq 0
    expect(model.url).to eq "http://example.com/%C3%B8"

    # should not work on invalid urls
    ["/relativepath",
     "",
     "invalidscheme://www.example.com",
     "not a url"].each do |invalid_url|
      model.url = invalid_url
      saved = model.save
      expect([model.url, saved]).to eq [invalid_url, false]
      expect(model.errors.size).to eq 1
      expect(model.errors.full_messages.join).to match(/not a valid URL/)
    end

    # should work on valid urls
    ["http://www.sub.test.example.tld./thing1?query#hash",
     "https://localhost/test/",
     "HTTP://localhost/test/",
     "http://192.168.24.205:1000",
     "http://user:password@host.tld:5555/path/to/thing",
     "http://user:password@host.tld/path/to/thing",
     "http://" + ("a" * 300) + ".com",
     "http://www.example.com"].each do |valid_url|
      model.url = valid_url
      model.save!
      expect(model.errors.size).to eq 0
      expect(model.url).to eq valid_url
    end

    # should support nil urls
    model.url = nil
    model.save!
    expect(model.errors.size).to eq 0
    expect(model.url).to be_nil
  end
end
