require "application_system_test_case"

class HistoryTest < ApplicationSystemTestCase
  PAGE_SIZE = 20

  test "atom link on user's history is not modified" do
    user = create(:user)
    create(:changeset, :user => user, :num_changes => 1) do |changeset|
      create(:changeset_tag, :changeset => changeset, :k => "comment", :v => "first-changeset-in-history")
    end

    visit "#{user_path(user)}/history"

    within_sidebar do
      assert_text "first-changeset-in-history"
    end

    assert_css "link[type='application/atom+xml'][href$='#{user_path(user)}/history/feed']", :visible => false
  end

  test "have only one list element on user's changesets page" do
    user = create(:user)
    create_visible_changeset(user, "first-changeset-in-history")
    create_visible_changeset(user, "bottom-changeset-in-batch-2")
    (PAGE_SIZE - 1).times do
      create_visible_changeset(user, "next-changeset")
    end
    create_visible_changeset(user, "bottom-changeset-in-batch-1")
    (PAGE_SIZE - 1).times do
      create_visible_changeset(user, "next-changeset")
    end

    assert_nothing_raised do
      visit "#{user_path(user)}/history"

      within_sidebar do
        assert_text "bottom-changeset-in-batch-1"
        assert_no_text "bottom-changeset-in-batch-2"
        assert_no_text "first-changeset-in-history"
        assert_selector "ol", :count => 1
        assert_selector "li[data-changeset]", :count => PAGE_SIZE

        click_on "Older Changesets"

        assert_text "bottom-changeset-in-batch-1"
        assert_text "bottom-changeset-in-batch-2"
        assert_no_text "first-changeset-in-history"
        assert_selector "ol", :count => 1
        assert_selector "li[data-changeset]", :count => 2 * PAGE_SIZE

        click_on "Older Changesets"

        assert_text "bottom-changeset-in-batch-1"
        assert_text "bottom-changeset-in-batch-2"
        assert_text "first-changeset-in-history"
        assert_selector "ol", :count => 1
        assert_selector "li[data-changeset]", :count => (2 * PAGE_SIZE) + 1
      end
    end
  end

  test "user history starts before specified changeset" do
    user = create(:user)
    changeset1 = create_visible_changeset(user, "1st-changeset-in-history")
    changeset2 = create_visible_changeset(user, "2nd-changeset-in-history")
    changeset3 = create(:changeset)

    visit "#{user_path user}/history?before=#{changeset1.id}"

    within_sidebar do
      assert_no_link "1st-changeset-in-history"
      assert_no_link "2nd-changeset-in-history"
    end

    visit "#{user_path user}/history?before=#{changeset2.id}"

    within_sidebar do
      assert_link "1st-changeset-in-history"
      assert_no_link "2nd-changeset-in-history"
    end

    visit "#{user_path user}/history?before=#{changeset3.id}"

    within_sidebar do
      assert_link "1st-changeset-in-history"
      assert_link "2nd-changeset-in-history"
    end
  end

  test "user history starts after specified changeset" do
    user = create(:user)
    changeset0 = create(:changeset)
    changeset1 = create_visible_changeset(user, "1st-changeset-in-history")
    changeset2 = create_visible_changeset(user, "2nd-changeset-in-history")

    visit "#{user_path user}/history?after=#{changeset2.id}"

    within_sidebar do
      assert_no_link "1st-changeset-in-history"
      assert_no_link "2nd-changeset-in-history"
    end

    visit "#{user_path user}/history?after=#{changeset1.id}"

    within_sidebar do
      assert_no_link "1st-changeset-in-history"
      assert_link "2nd-changeset-in-history"
    end

    visit "#{user_path user}/history?after=#{changeset0.id}"

    within_sidebar do
      assert_link "1st-changeset-in-history"
      assert_link "2nd-changeset-in-history"
    end
  end

  test "update sidebar when before param is included and map is moved" do
    changeset1 = create(:changeset, :num_changes => 1, :bbox => [5, 5, 5, 5])
    create(:changeset_tag, :changeset => changeset1, :k => "comment", :v => "changeset-at-fives")
    changeset2 = create(:changeset, :num_changes => 1, :bbox => [5.01, 5.01, 5.01, 5.01])
    create(:changeset_tag, :changeset => changeset2, :k => "comment", :v => "changeset-close-to-fives")
    changeset3 = create(:changeset)

    visit "/history?before=#{changeset3.id}#map=17/5/5"

    within_sidebar do
      assert_link "changeset-at-fives"
      assert_no_link "changeset-close-to-fives"
    end

    within "#map" do
      find_link("Zoom Out").click(:shift)
    end

    within_sidebar do
      assert_link "changeset-at-fives"
      assert_link "changeset-close-to-fives"
    end

    assert_current_path history_path
  end

  test "all changesets are listed when fully zoomed out" do
    user = create(:user)
    [-177, -90, 0, 90, 177].each do |lon|
      create(:changeset, :user => user, :num_changes => 1, :bbox => [lon - 1, 0, lon + 1, 1]) do |changeset|
        create(:changeset_tag, :changeset => changeset, :k => "comment", :v => "changeset-at-lon(#{lon})")
      end
    end

    visit history_path(:anchor => "map=0/0/0")

    within_sidebar do
      assert_link "changeset-at-lon(-177)", :count => 1
      assert_link "changeset-at-lon(-90)", :count => 1
      assert_link "changeset-at-lon(0)", :count => 1
      assert_link "changeset-at-lon(90)", :count => 1
      assert_link "changeset-at-lon(177)", :count => 1
    end
  end

  test "changesets at both sides of antimeridian are listed" do
    user = create(:user)
    PAGE_SIZE.times do
      create(:changeset, :user => user, :num_changes => 1, :bbox => [176, 0, 178, 1]) do |changeset|
        create(:changeset_tag, :changeset => changeset, :k => "comment", :v => "West-of-antimeridian-changeset")
      end
      create(:changeset, :user => user, :num_changes => 1, :bbox => [-178, 0, -176, 1]) do |changeset|
        create(:changeset_tag, :changeset => changeset, :k => "comment", :v => "East-of-antimeridian-changeset")
      end
    end

    visit history_path(:anchor => "map=6/0/179")

    within_sidebar do
      assert_link "West-of-antimeridian-changeset", :count => PAGE_SIZE / 2
      assert_link "East-of-antimeridian-changeset", :count => PAGE_SIZE / 2

      click_on "Older Changesets"

      assert_link "West-of-antimeridian-changeset", :count => PAGE_SIZE
      assert_link "East-of-antimeridian-changeset", :count => PAGE_SIZE
    end
  end

  test "changeset bbox is shown on the map and clickable" do
    user = create(:user)
    changeset = create(:changeset, :user => user, :num_changes => 1, :bbox => [50, 50, 51, 51])
    create(:changeset_tag, :changeset => changeset, :k => "comment", :v => "Clickable changeset")

    visit "#{user_path(user)}/history"

    within_sidebar do
      assert_link "Clickable changeset"
    end

    find_by_id("map").click

    assert_current_path changeset_path(changeset)
  end

  private

  def create_visible_changeset(user, comment)
    create(:changeset, :user => user, :num_changes => 1) do |changeset|
      create(:changeset_tag, :changeset => changeset, :k => "comment", :v => comment)
    end
  end
end