# frozen_string_literal: true

RSpec.describe GroupsController do
  fab!(:user) { Fabricate(:user) }
  fab!(:user2) { Fabricate(:user) }
  fab!(:other_user) { Fabricate(:user) }
  let(:group) { Fabricate(:group, users: [user]) }
  let(:moderator_group_id) { Group::AUTO_GROUPS[:moderators] }
  fab!(:admin) { Fabricate(:admin) }
  fab!(:moderator) { Fabricate(:moderator) }

  describe '#index' do
    let(:staff_group) do
      Fabricate(:group, name: 'staff_group', visibility_level: Group.visibility_levels[:staff])
    end

    it "ensures that groups can be paginated" do
      50.times { Fabricate(:group) }

      get "/groups.json"

      expect(response.status).to eq(200)

      body = response.parsed_body

      expect(body["groups"].size).to eq(36)
      expect(body["total_rows_groups"]).to eq(50)
      expect(body["load_more_groups"]).to eq("/groups?page=1")

      get "/groups.json", params: { page: 1 }

      expect(response.status).to eq(200)

      body = response.parsed_body

      expect(body["groups"].size).to eq(14)
      expect(body["total_rows_groups"]).to eq(50)
      expect(body["load_more_groups"]).to eq("/groups?page=2")
    end

    context 'when group directory is disabled' do
      before do
        SiteSetting.enable_group_directory = false
      end

      it 'should deny access for an anon' do
        get "/groups.json"
        expect(response.status).to eq(403)
      end

      it 'should deny access for a normal user' do
        sign_in(user)
        get "/groups.json"

        expect(response.status).to eq(403)
      end

      it 'should allow access for an admin' do
        sign_in(admin)
        get "/groups.json"

        expect(response.status).to eq(200)
      end

      it 'should allow access for a moderator' do
        sign_in(moderator)
        get "/groups.json"

        expect(response.status).to eq(200)
      end
    end

    context 'with searchable' do
      it 'should return the searched groups' do
        testing_group = Fabricate(:group, name: 'testing')

        get "/groups.json", params: { filter: 'test' }

        expect(response.status).to eq(200)

        body = response.parsed_body

        expect(body["groups"].first["id"]).to eq(testing_group.id)
        expect(body["load_more_groups"]).to eq("/groups?filter=test&page=1")
      end
    end

    context 'with sortable' do
      before do
        group
        sign_in(user)
      end

      fab!(:group_with_2_users) { Fabricate(:group, name: "other_group", users: [user, other_user]) }

      context "with default (descending) order" do
        it "sorts by name" do
          get "/groups.json", params: { order: "name" }

          expect(response.status).to eq(200)

          body = response.parsed_body

          expect(body["groups"].map { |g| g["id"] }).to eq([
            group_with_2_users.id, group.id, moderator_group_id
          ])

          expect(body["load_more_groups"]).to eq("/groups?order=name&page=1")
        end

        it "sorts by user_count" do
          get "/groups.json", params: { order: "user_count" }

          expect(response.status).to eq(200)

          body = response.parsed_body

          expect(body["groups"].map { |g| g["id"] }).to eq([
            group_with_2_users.id, moderator_group_id, group.id
          ])

          expect(body["load_more_groups"]).to eq("/groups?order=user_count&page=1")
        end
      end

      context "with ascending order" do
        it "sorts by name" do
          get "/groups.json", params: { order: "name", asc: true }

          expect(response.status).to eq(200)

          body = response.parsed_body

          expect(body["groups"].map { |g| g["id"] }).to eq([
            moderator_group_id, group.id, group_with_2_users.id
          ])

          expect(body["load_more_groups"]).to eq("/groups?asc=true&order=name&page=1")
        end

        it "sorts by user_count" do
          get "/groups.json", params: { order: "user_count", asc: "true" }

          expect(response.status).to eq(200)

          body = response.parsed_body

          expect(body["groups"].map { |g| g["id"] }).to eq([
            moderator_group_id, group.id, group_with_2_users.id
          ])

          expect(body["load_more_groups"]).to eq("/groups?asc=true&order=user_count&page=1")
        end
      end
    end

    it 'should return the right response' do
      group
      staff_group

      get "/groups.json"

      expect(response.status).to eq(200)

      body = response.parsed_body

      group_ids = body["groups"].map { |g| g["id"] }

      expect(group_ids).to contain_exactly(group.id)

      expect(body["load_more_groups"]).to eq("/groups?page=1")
      expect(body["total_rows_groups"]).to eq(1)
      expect(body["extras"]["type_filters"].map(&:to_sym)).to eq(
        described_class::TYPE_FILTERS.keys - [:my, :owner, :automatic, :non_automatic]
      )
    end

    context 'when viewing groups of another user' do
      describe 'when an invalid username is given' do
        it 'should return the right response' do
          group
          get "/groups.json", params: { username: 'asdasd' }

          expect(response.status).to eq(404)
        end
      end

      it 'should return the right response' do
        u = Fabricate(:user)
        m = Fabricate(:user)
        o = Fabricate(:user)

        levels = Group.visibility_levels.values

        levels.product(levels).each { |group_level, members_level|
          g = Fabricate(:group,
            name: "#{group_level}_#{members_level}",
            visibility_level: group_level,
            members_visibility_level: members_level,
            users: [u]
          )

          g.add(m) if group_level == Group.visibility_levels[:members] || members_level == Group.visibility_levels[:members]
          g.add_owner(o) if group_level == Group.visibility_levels[:owners] || members_level == Group.visibility_levels[:owners]
        }

        # anonymous user
        get "/groups.json", params: { username: u.username }

        expect(response.status).to eq(200)
        group_names = response.parsed_body["groups"].map { |g| g["name"] }
        expect(group_names).to contain_exactly("0_0")

        # logged in user
        sign_in(user)
        get "/groups.json", params: { username: u.username }

        expect(response.status).to eq(200)
        group_names = response.parsed_body["groups"].map { |g| g["name"] }
        expect(group_names).to contain_exactly("0_0", "0_1", "1_0", "1_1")

        # member of the group
        sign_in(m)
        get "/groups.json", params: { username: u.username }

        expect(response.status).to eq(200)
        group_names = response.parsed_body["groups"].map { |g| g["name"] }
        expect(group_names).to contain_exactly("0_0", "0_1", "0_2", "1_0", "1_1", "1_2", "2_0", "2_1", "2_2")

        # owner
        sign_in(o)
        get "/groups.json", params: { username: u.username }

        expect(response.status).to eq(200)
        group_names = response.parsed_body["groups"].map { |g| g["name"] }
        expect(group_names).to contain_exactly("0_0", "0_1", "0_4", "1_0", "1_1", "1_4", "2_4", "3_4", "4_0", "4_1", "4_2", "4_3", "4_4")

        # moderator
        sign_in(moderator)
        get "/groups.json", params: { username: u.username }

        expect(response.status).to eq(200)
        group_names = response.parsed_body["groups"].map { |g| g["name"] }
        expect(group_names).to contain_exactly("0_0", "0_1", "0_2", "0_3", "1_0", "1_1", "1_2", "1_3", "2_0", "2_1", "2_2", "2_3", "3_0", "3_1", "3_2", "3_3")

        # admin
        sign_in(admin)
        get "/groups.json", params: { username: u.username }

        expect(response.status).to eq(200)
        group_names = response.parsed_body["groups"].map { |g| g["name"] }
        all_group_names = levels.product(levels).map { |a, b| "#{a}_#{b}" }
        expect(group_names).to contain_exactly(*all_group_names)
      end
    end

    context 'when viewing as an admin' do
      before do
        sign_in(admin)
        group.add(admin)
        group.add_owner(admin)
      end

      it 'should return the right response' do
        staff_group
        get "/groups.json"

        expect(response.status).to eq(200)

        body = response.parsed_body

        group_ids = body["groups"].map { |g| g["id"] }
        group_body = body["groups"].find { |g| g["id"] == group.id }

        expect(group_body["is_group_user"]).to eq(true)
        expect(group_body["is_group_owner"]).to eq(true)
        expect(group_ids).to include(group.id, staff_group.id)
        expect(body["load_more_groups"]).to eq("/groups?page=1")
        expect(body["total_rows_groups"]).to eq(10)

        expect(body["extras"]["type_filters"].map(&:to_sym)).to eq(
          described_class::TYPE_FILTERS.keys - [:non_automatic]
        )
      end

      context 'when filterable by type' do
        def expect_type_to_return_right_groups(type, expected_group_ids)
          get "/groups.json", params: { type: type }

          expect(response.status).to eq(200)

          body = response.parsed_body
          group_ids = body["groups"].map { |g| g["id"] }

          expect(body["total_rows_groups"]).to eq(expected_group_ids.count)
          expect(group_ids).to contain_exactly(*expected_group_ids)
        end

        describe 'my groups' do
          it 'should return the groups admin is a member of' do
            expect_type_to_return_right_groups('my', admin.group_users.map(&:group_id))
          end
        end

        describe 'owner groups' do
          it 'should return the groups admin is a owner of' do
            group2 = Fabricate(:group)
            _group3 = Fabricate(:group)
            group2.add_owner(admin)

            expect_type_to_return_right_groups('owner', admin.group_users.where(owner: true).map(&:group_id))
          end
        end

        describe 'automatic groups' do
          it 'should return the right response' do
            expect_type_to_return_right_groups(
              'automatic',
              Group::AUTO_GROUP_IDS.keys - [0]
            )
          end
        end

        describe 'non automatic groups' do
          it 'should return the right response' do
            group2 = Fabricate(:group)
            expect_type_to_return_right_groups(
              'non_automatic',
              [group.id, group2.id]
            )
          end
        end

        describe 'public groups' do
          it 'should return the right response' do
            group2 = Fabricate(:group, public_admission: true)

            expect_type_to_return_right_groups('public', [group2.id])
          end
        end

        describe 'close groups' do
          it 'should return the right response' do
            group2 = Fabricate(:group, public_admission: false)
            _group3 = Fabricate(:group, public_admission: true)

            expect_type_to_return_right_groups('close', [group.id, group2.id])
          end
        end
      end
    end
  end

  describe '#show' do
    it "ensures the group can be seen" do
      sign_in(user)
      group.update!(visibility_level: Group.visibility_levels[:owners])

      get "/groups/#{group.name}.json"

      expect(response.status).to eq(404)
    end

    it "returns the right response" do
      sign_in(user)
      mod_group = Group.find(moderator_group_id)
      get "/groups/#{group.name}.json"

      expect(response.status).to eq(200)

      body = response.parsed_body

      expect(body['group']['id']).to eq(group.id)
      expect(body['extras']["visible_group_names"]).to eq([mod_group.name, group.name])
      expect(response.headers['X-Robots-Tag']).to eq('noindex')
    end

    context 'as an admin' do
      it "returns the right response" do
        sign_in(admin)
        get "/groups/#{group.name}.json"

        expect(response.status).to eq(200)

        body = response.parsed_body

        expect(body['group']['id']).to eq(group.id)

        groups = Group::AUTO_GROUPS.keys
        groups.delete(:everyone)
        groups.push(group.name)

        expect(body['extras']["visible_group_names"])
          .to contain_exactly(*groups.map(&:to_s))
      end
    end

    it 'should respond to HTML' do
      group.update!(bio_raw: 'testing **group** bio')

      get "/groups/#{group.name}.html"

      expect(response.status).to eq(200)

      expect(response.body).to have_tag "title", text: "#{group.name} - #{SiteSetting.title}"
      expect(response.body).to have_tag(:meta, with: {
        property: 'og:title', content: group.name
      })

      # note this uses an excerpt so it strips html
      expect(response.body).to have_tag(:meta, with: {
        property: 'og:description', content: 'testing group bio'
      })
    end

    describe 'when viewing activity filters' do
      it 'should return the right response' do
        get "/groups/#{group.name}/activity/posts.json"

        expect(response.status).to eq(200)

        body = response.parsed_body['group']

        expect(body["id"]).to eq(group.id)
      end
    end
  end

  describe "#posts" do
    it "ensures the group can be seen" do
      sign_in(user)
      group.update!(visibility_level: Group.visibility_levels[:owners])

      get "/groups/#{group.name}/posts.json"

      expect(response.status).to eq(404)
    end

    it "ensures the group members can be seen" do
      sign_in(user)
      group.update!(members_visibility_level: Group.visibility_levels[:owners])

      get "/groups/#{group.name}/posts.json"

      expect(response.status).to eq(403)
    end

    it "calls `posts_for` and responds with JSON" do
      sign_in(user)
      post = Fabricate(:post, user: user)
      get "/groups/#{group.name}/posts.json"

      expect(response.status).to eq(200)
      expect(response.parsed_body.first["id"]).to eq(post.id)
    end

    it "returns moderator actions" do
      sign_in(user)
      post = Fabricate(:post, user: user, post_type: Post.types[:moderator_action])
      get "/groups/#{group.name}/posts.json"

      expect(response.status).to eq(200)
      expect(response.parsed_body.first["id"]).to eq(post.id)
    end
  end

  describe "#members" do

    it "returns correct error code with invalid params" do
      sign_in(user)

      get "/groups/#{group.name}/members.json?limit=-1"
      expect(response.status).to eq(400)

      get "/groups/#{group.name}/members.json?offset=-1"
      expect(response.status).to eq(400)

      get "/groups/trust_level_0/members.json?limit=2000"
      expect(response.status).to eq(400)
    end

    it "ensures the group can be seen" do
      sign_in(user)
      group.update!(visibility_level: Group.visibility_levels[:owners])

      get "/groups/#{group.name}/members.json"

      expect(response.status).to eq(404)
    end

    it "ensures the group members can be seen" do
      group.update!(members_visibility_level: Group.visibility_levels[:logged_on_users])

      get "/groups/#{group.name}/members.json", params: { limit: 1 }

      expect(response.status).to eq(403)
    end

    it "ensures that membership can be paginated" do
      freeze_time

      first_user = Fabricate(:user)
      group.add(first_user)

      freeze_time 1.day.from_now

      4.times { group.add(Fabricate(:user)) }
      usernames = group.users.map { |m| m.username }.sort

      get "/groups/#{group.name}/members.json", params: { limit: 3, asc: true }

      expect(response.status).to eq(200)

      members = response.parsed_body["members"]

      expect(members.map { |m| m['username'] }).to eq(usernames[0..2])

      get "/groups/#{group.name}/members.json", params: { limit: 3, offset: 3, asc: true }

      expect(response.status).to eq(200)

      members = response.parsed_body["members"]

      expect(members.map { |m| m['username'] }).to eq(usernames[3..5])

      get "/groups/#{group.name}/members.json", params: { order: 'added_at' }
      members = response.parsed_body["members"]

      expect(members.last['added_at']).to eq(first_user.created_at.as_json)
    end

    it "can sort items" do
      sign_in(user)
      group.update!(visibility_level: Group.visibility_levels[:logged_on_users])
      other_user = Fabricate(:user)
      group.add_owner(other_user)

      get "/groups/#{group.name}/members.json"

      expect(response.parsed_body["members"].map { |u| u["id"] }).to eq([other_user.id, user.id])
      expect(response.parsed_body["owners"].map { |u| u["id"] }).to eq([other_user.id])

      get "/groups/#{group.name}/members.json?order=added_at&asc=1"

      expect(response.parsed_body["members"].map { |u| u["id"] }).to eq([user.id, other_user.id])
      expect(response.parsed_body["owners"].map { |u| u["id"] }).to eq([other_user.id])
    end
  end

  describe '#posts_feed' do
    it 'renders RSS' do
      get "/groups/#{group.name}/posts.rss"

      expect(response.status).to eq(200)
      expect(response.media_type).to eq('application/rss+xml')
    end
  end

  describe '#mentions_feed' do
    it 'renders RSS' do
      get "/groups/#{group.name}/mentions.rss"

      expect(response.status).to eq(200)
      expect(response.media_type).to eq('application/rss+xml')
    end

    it 'fails when disabled' do
      SiteSetting.enable_mentions = false

      get "/groups/#{group.name}/mentions.rss"

      expect(response.status).to eq(404)
    end
  end

  describe '#mentionable' do
    it "should return the right response" do
      sign_in(user)

      group.update!(
        mentionable_level: Group::ALIAS_LEVELS[:owners_mods_and_admins],
        visibility_level: Group.visibility_levels[:logged_on_users]
      )

      get "/groups/#{group.name}/mentionable.json"
      expect(response.status).to eq(200)

      body = response.parsed_body
      expect(body["mentionable"]).to eq(false)

      group.update!(
        mentionable_level: Group::ALIAS_LEVELS[:everyone],
        visibility_level: Group.visibility_levels[:staff]
      )

      get "/groups/#{group.name}/mentionable.json"
      expect(response.status).to eq(200)

      body = response.parsed_body
      expect(body["mentionable"]).to eq(true)

      group.update!(
        mentionable_level: Group::ALIAS_LEVELS[:nobody],
        visibility_level: Group.visibility_levels[:public]
      )

      get "/groups/#{group.name}/mentionable.json"
      expect(response.status).to eq(200)

      body = response.parsed_body
      expect(body["mentionable"]).to eq(true)
    end
  end

  describe '#messageable' do
    it "should return the right response" do
      user.change_trust_level!(1)
      sign_in(user)

      get "/groups/#{group.name}/messageable.json"
      expect(response.status).to eq(200)

      body = response.parsed_body
      expect(body["messageable"]).to eq(false)

      group.update!(
        messageable_level: Group::ALIAS_LEVELS[:everyone],
        visibility_level: Group.visibility_levels[:staff]
      )

      get "/groups/#{group.name}/messageable.json"
      expect(response.status).to eq(200)

      body = response.parsed_body
      expect(body["messageable"]).to eq(true)

      SiteSetting.personal_message_enabled_groups = Group::AUTO_GROUPS[:staff]
      SiteSetting.enable_personal_messages = false

      get "/groups/#{group.name}/messageable.json"
      expect(response.status).to eq(200)

      body = response.parsed_body
      expect(body["messageable"]).to eq(false)
    end
  end

  describe '#update' do
    let!(:group) do
      Fabricate(:group,
        name: 'test',
        users: [user],
        public_admission: false,
        public_exit: false
      )
    end
    let(:category) { Fabricate(:category) }
    let(:tag) { Fabricate(:tag) }

    context "with custom_fields" do
      before do
        user.update!(admin: true)
        sign_in(user)
        plugin = Plugin::Instance.new
        plugin.register_editable_group_custom_field :test
        @group = Fabricate(:group)
      end

      after do
        DiscoursePluginRegistry.reset!
      end

      it "only updates allowed user fields" do
        put "/groups/#{@group.id}.json", params: { group: { custom_fields: { test: :hello1, test2: :hello2 } } }

        @group.reload

        expect(response.status).to eq(200)
        expect(@group.custom_fields['test']).to eq('hello1')
        expect(@group.custom_fields['test2']).to be_blank
      end

      it "is secure when there are no registered editable fields" do
        DiscoursePluginRegistry.reset!
        put "/groups/#{@group.id}.json", params: { group: { custom_fields: { test: :hello1, test2: :hello2 } } }

        @group.reload

        expect(response.status).to eq(200)
        expect(@group.custom_fields['test']).to be_blank
        expect(@group.custom_fields['test2']).to be_blank
      end
    end

    context "when user is group owner" do
      before do
        group.add_owner(user)
        sign_in(user)
      end

      it "should be able update the group" do
        group.update!(
          allow_membership_requests: false,
          visibility_level: 2,
          mentionable_level: 2,
          messageable_level: 2,
          default_notification_level: 0,
          grant_trust_level: 0
        )

        expect do
          put "/groups/#{group.id}.json", params: {
            group: {
              mentionable_level: 1,
              messageable_level: 1,
              visibility_level: 1,
              automatic_membership_email_domains: 'test.org',
              title: 'haha',
              primary_group: true,
              grant_trust_level: 1,
              incoming_email: 'test@mail.org',
              flair_bg_color: 'FFF',
              flair_color: 'BBB',
              flair_icon: 'fa-adjust',
              bio_raw: 'testing',
              full_name: 'awesome team',
              public_admission: true,
              public_exit: true,
              allow_membership_requests: true,
              membership_request_template: 'testing',
              default_notification_level: 1,
              name: 'testing',
              tracking_category_ids: [category.id],
              tracking_tags: [tag.name]
            },
            update_existing_users: false
          }
        end.to change { GroupHistory.count }.by(13)

        expect(response.status).to eq(200)

        group.reload

        expect(group.flair_bg_color).to eq('FFF')
        expect(group.flair_color).to eq('BBB')
        expect(group.flair_url).to eq('fa-adjust')
        expect(group.bio_raw).to eq('testing')
        expect(group.full_name).to eq('awesome team')
        expect(group.public_admission).to eq(true)
        expect(group.public_exit).to eq(true)
        expect(group.allow_membership_requests).to eq(true)
        expect(group.membership_request_template).to eq('testing')
        expect(group.name).to eq('test')
        expect(group.visibility_level).to eq(2)
        expect(group.mentionable_level).to eq(1)
        expect(group.messageable_level).to eq(1)
        expect(group.default_notification_level).to eq(1)
        expect(group.automatic_membership_email_domains).to eq(nil)
        expect(group.title).to eq('haha')
        expect(group.primary_group).to eq(false)
        expect(group.incoming_email).to eq(nil)
        expect(group.grant_trust_level).to eq(0)
        expect(group.group_category_notification_defaults.first&.category).to eq(category)
        expect(group.group_tag_notification_defaults.first&.tag).to eq(tag)
      end

      it 'should not be allowed to update automatic groups' do
        group = Group.find(Group::AUTO_GROUPS[:admins])

        put "/groups/#{group.id}.json", params: {
          group: {
            messageable_level: 1
          }
        }

        expect(response.status).to eq(403)
      end
    end

    context "when user is group admin" do
      before do
        sign_in(admin)
      end

      it 'should be able to update the group' do
        group.update!(
          visibility_level: 2,
          members_visibility_level: 2,
          grant_trust_level: 0
        )

        put "/groups/#{group.id}.json", params: {
          group: {
            flair_color: 'BBB',
            name: 'testing',
            incoming_email: 'test@mail.org',
            primary_group: true,
            automatic_membership_email_domains: 'test.org',
            grant_trust_level: 2,
            visibility_level: 1,
            members_visibility_level: 3,
            tracking_category_ids: [category.id],
            tracking_tags: [tag.name]
          },
          update_existing_users: false
        }

        expect(response.status).to eq(200)

        group.reload
        expect(group.flair_color).to eq('BBB')
        expect(group.name).to eq('testing')
        expect(group.incoming_email).to eq("test@mail.org")
        expect(group.primary_group).to eq(true)
        expect(group.visibility_level).to eq(1)
        expect(group.members_visibility_level).to eq(3)
        expect(group.automatic_membership_email_domains).to eq('test.org')
        expect(group.grant_trust_level).to eq(2)
        expect(group.group_category_notification_defaults.first&.category).to eq(category)
        expect(group.group_tag_notification_defaults.first&.tag).to eq(tag)

        expect(Jobs::AutomaticGroupMembership.jobs.first["args"].first["group_id"])
          .to eq(group.id)
      end

      it "they should be able to update an automatic group" do
        group = Group.find(Group::AUTO_GROUPS[:admins])

        group.update!(
          visibility_level: 2,
          mentionable_level: 2,
          messageable_level: 2,
          default_notification_level: 2
        )

        put "/groups/#{group.id}.json", params: {
          group: {
            flair_bg_color: 'FFF',
            flair_color: 'BBB',
            flair_icon: 'fa-adjust',
            name: 'testing',
            visibility_level: 1,
            mentionable_level: 1,
            messageable_level: 1,
            default_notification_level: 1,
            tracking_category_ids: [category.id],
            tracking_tags: [tag.name]
          },
          update_existing_users: false
        }

        expect(response.status).to eq(200)

        group.reload
        expect(group.flair_bg_color).to eq('FFF')
        expect(group.flair_color).to eq('BBB')
        expect(group.flair_icon).to eq('fa-adjust')
        expect(group.flair_url).to eq('fa-adjust')
        expect(group.name).to eq('admins')
        expect(group.visibility_level).to eq(1)
        expect(group.mentionable_level).to eq(1)
        expect(group.messageable_level).to eq(1)
        expect(group.default_notification_level).to eq(1)
        expect(group.group_category_notification_defaults.first&.category).to eq(category)
        expect(group.group_tag_notification_defaults.first&.tag).to eq(tag)
      end

      it 'triggers a extensibility event' do
        event = DiscourseEvent.track_events {
          put "/groups/#{group.id}.json", params: { group: { flair_color: 'BBB' } }
        }.last

        expect(event[:event_name]).to eq(:group_updated)
        expect(event[:params].first).to eq(group)
      end

      context "with user default notifications" do
        it "should update default notification preference for existing users" do
          group.update!(default_notification_level: NotificationLevels.all[:watching])
          user1 = Fabricate(:user)
          group.add(user1)
          group.add(user2)
          group_user1 = user1.group_users.first
          group_user2 = user2.group_users.first

          put "/groups/#{group.id}.json", params: {
            group: {
              default_notification_level: NotificationLevels.all[:tracking]
            }
          }

          expect(response.status).to eq(422)
          expect(response.parsed_body["user_count"]).to eq(group.group_users.count)
          expect(response.parsed_body["errors"].first).to include("update_existing_users")
          expect(group_user1.reload.notification_level).to eq(NotificationLevels.all[:watching])
          expect(group_user2.reload.notification_level).to eq(NotificationLevels.all[:watching])

          group_user1.update!(notification_level: NotificationLevels.all[:regular])

          put "/groups/#{group.id}.json", params: {
            group: {
              default_notification_level: NotificationLevels.all[:tracking]
            }
          }

          expect(response.status).to eq(422)
          expect(response.parsed_body["user_count"]).to eq(group.group_users.count - 1)
          expect(group_user1.reload.notification_level).to eq(NotificationLevels.all[:regular])
          expect(group_user2.reload.notification_level).to eq(NotificationLevels.all[:watching])

          put "/groups/#{group.id}.json", params: {
            group: {
              default_notification_level: NotificationLevels.all[:tracking]
            },
            update_existing_users: true
          }

          expect(response.status).to eq(200)
          expect(response.parsed_body["success"]).to eq("OK")
          expect(group_user1.reload.notification_level).to eq(NotificationLevels.all[:regular])
          expect(group_user2.reload.notification_level).to eq(NotificationLevels.all[:tracking])

          put "/groups/#{group.id}.json", params: {
            group: {
              default_notification_level: NotificationLevels.all[:regular]
            },
            update_existing_users: false
          }

          expect(response.status).to eq(200)
          expect(response.parsed_body["success"]).to eq("OK")
          expect(group_user1.reload.notification_level).to eq(NotificationLevels.all[:regular])
          expect(group_user2.reload.notification_level).to eq(NotificationLevels.all[:tracking])
        end

        it "should update category & tag notification preferences for existing users" do
          user1 = Fabricate(:user)
          CategoryUser.create!(user: user1, category: category, notification_level: 4)
          TagUser.create!(user: user1, tag: tag, notification_level: 4)
          TagUser.create!(user: user2, tag: tag, notification_level: 4)
          group.add(user1)
          group.add(user2)

          put "/groups/#{group.id}.json", params: {
            group: {
              flair_color: 'BBB',
              name: 'testing',
              incoming_email: 'test@mail.org',
              primary_group: true,
              automatic_membership_email_domains: 'test.org',
              grant_trust_level: 2,
              visibility_level: 1,
              members_visibility_level: 3,
              tracking_category_ids: [category.id],
              tracking_tags: [tag.name]
            }
          }

          expect(response.status).to eq(422)
          expect(response.parsed_body["user_count"]).to eq(group.group_users.count - 1)

          put "/groups/#{group.id}.json", params: {
            group: {
              flair_color: 'BBB',
              name: 'testing',
              incoming_email: 'test@mail.org',
              primary_group: true,
              automatic_membership_email_domains: 'test.org',
              grant_trust_level: 2,
              visibility_level: 1,
              members_visibility_level: 3,
              tracking_category_ids: [category.id],
              tracking_tags: [tag.name]
            },
            update_existing_users: true
          }

          expect(response.status).to eq(200)
          expect(response.parsed_body["success"]).to eq("OK")

          put "/groups/#{group.id}.json", params: {
            group: {
              flair_color: 'BBB',
              name: 'testing',
              incoming_email: 'test@mail.org',
              primary_group: true,
              automatic_membership_email_domains: 'test.org',
              grant_trust_level: 2,
              visibility_level: 1,
              members_visibility_level: 3,
              watching_category_ids: [category.id],
              tracking_tags: [tag.name]
            },
            update_existing_users: true
          }

          expect(response.status).to eq(200)
          expect(response.parsed_body["success"]).to eq("OK")
          expect(CategoryUser.exists?(user: user2, category: category, notification_level: 3)).to be_truthy
        end
      end
    end

    context "when user is a site moderator" do
      before do
        SiteSetting.moderators_manage_categories_and_groups = true
        sign_in(moderator)
      end

      it 'should not be able to update the group if the SiteSetting is false' do
        SiteSetting.moderators_manage_categories_and_groups = false

        put "/groups/#{group.id}.json", params: { group: { name: 'testing' } }

        expect(response.status).to eq(403)
      end

      it 'should not be able to update a group it cannot see' do
        group.update!(visibility_level: Group.visibility_levels[:owners])

        put "/groups/#{group.id}.json", params: { group: { name: 'testing' } }

        expect(response.status).to eq(403)
      end

      it 'should be able to update the group' do
        put "/groups/#{group.id}.json", params: {
          group: {
            flair_color: 'BBB',
            name: 'testing',
            incoming_email: 'test@mail.org',
            primary_group: true,
            automatic_membership_email_domains: 'test.org',
            grant_trust_level: 2,
            visibility_level: 1,
            members_visibility_level: 3,
            tracking_category_ids: [category.id],
            tracking_tags: [tag.name]
          },
          update_existing_users: false
        }

        expect(response.status).to eq(200)

        group.reload
        expect(group.flair_color).to eq('BBB')
        expect(group.name).to eq('testing')
        expect(group.incoming_email).to eq("test@mail.org")
        expect(group.primary_group).to eq(true)
        expect(group.visibility_level).to eq(1)
        expect(group.members_visibility_level).to eq(3)
        expect(group.automatic_membership_email_domains).to eq('test.org')
        expect(group.grant_trust_level).to eq(2)
        expect(group.group_category_notification_defaults.first&.category).to eq(category)
        expect(group.group_tag_notification_defaults.first&.tag).to eq(tag)

        expect(Jobs::AutomaticGroupMembership.jobs.first["args"].first["group_id"])
          .to eq(group.id)
      end

      it "should be able to update an automatic group" do
        group = Group.find(Group::AUTO_GROUPS[:trust_level_4])

        group.update!(
          mentionable_level: 2,
          messageable_level: 2,
          default_notification_level: 2
        )

        put "/groups/#{group.id}.json", params: {
          group: {
            flair_bg_color: 'FFF',
            flair_color: 'BBB',
            flair_icon: 'fa-adjust',
            mentionable_level: 1,
            messageable_level: 1,
            default_notification_level: 1
          }
        }

        expect(response.status).to eq(200)

        group.reload
        expect(group.flair_bg_color).to eq('FFF')
        expect(group.flair_color).to eq('BBB')
        expect(group.flair_icon).to eq('fa-adjust')
        expect(group.flair_url).to eq('fa-adjust')
        expect(group.name).to eq('trust_level_4')
        expect(group.mentionable_level).to eq(1)
        expect(group.messageable_level).to eq(1)
        expect(group.default_notification_level).to eq(1)
      end

      it 'triggers a extensibility event' do
        event = DiscourseEvent.track_events {
          put "/groups/#{group.id}.json", params: { group: { flair_color: 'BBB' } }
        }.last

        expect(event[:event_name]).to eq(:group_updated)
        expect(event[:params].first).to eq(group)
      end
    end

    context "when user is not a group owner or admin" do
      it 'should not be able to update the group' do
        sign_in(user)

        put "/groups/#{group.id}.json", params: { group: { name: 'testing' } }

        expect(response.status).to eq(403)
      end
    end
  end

  describe '#members' do
    let(:user1) do
      Fabricate(:user,
        last_seen_at: Time.zone.now,
        last_posted_at: Time.zone.now - 1.day,
        email: 'b@test.org'
      )
    end

    let(:user2) do
      Fabricate(:user,
        last_seen_at: Time.zone.now - 1 .day,
        last_posted_at: Time.zone.now,
        email: 'a@test.org'
      )
    end

    fab!(:user3) do
      Fabricate(:user,
        last_seen_at: nil,
        last_posted_at: nil,
        email: 'c@test.org'
      )
    end

    fab!(:bot) { Fabricate(:user, id: -999) }

    let(:group) { Fabricate(:group, users: [user1, user2, user3, bot]) }

    it "should allow members to be sorted by" do
      get "/groups/#{group.name}/members.json", params: {
        order: 'last_seen_at'
      }

      expect(response.status).to eq(200)

      members = response.parsed_body["members"]

      expect(members.map { |m| m["id"] }).to eq([user1.id, user2.id, user3.id])

      get "/groups/#{group.name}/members.json", params: { order: 'last_seen_at', asc: true }

      expect(response.status).to eq(200)

      members = response.parsed_body["members"]

      expect(members.map { |m| m["id"] }).to eq([user2.id, user1.id, user3.id])

      get "/groups/#{group.name}/members.json", params: {
        order: 'last_posted_at'
      }

      expect(response.status).to eq(200)

      members = response.parsed_body["members"]

      expect(members.map { |m| m["id"] }).to eq([user2.id, user1.id, user3.id])
    end

    it "should not allow members to be sorted by columns that are not allowed" do
      get "/groups/#{group.name}/members.json", params: { order: 'email' }

      expect(response.status).to eq(200)

      members = response.parsed_body["members"]

      expect(members.map { |m| m["id"] })
        .to contain_exactly(user1.id, user2.id, user3.id)
    end

    it "can show group requests" do
      sign_in(admin)

      user4 = Fabricate(:user)
      request4 = Fabricate(:group_request, user: user4, group: group)

      get "/groups/#{group.name}/members.json", params: { requesters: true }

      members = response.parsed_body["members"]
      expect(members.length).to eq(1)
      expect(members.first["username"]).to eq(user4.username)
      expect(members.first["reason"]).to eq(request4.reason)
    end

    describe 'filterable' do
      describe 'as a normal user' do
        it "should not allow members to be filterable by email" do
          email = 'uniquetest@discourse.org'
          user1.update!(email: email)

          get "/groups/#{group.name}/members.json", params: { filter: email }

          expect(response.status).to eq(200)
          members = response.parsed_body["members"]
          expect(members).to eq([])
        end
      end

      describe 'as an admin' do
        before do
          sign_in(admin)
        end

        it "should allow members to be filterable by username" do
          email = 'uniquetest@discourse.org'
          user1.update!(email: email)

          {
            email.upcase => [user1.id],
            'QUEtes' => [user1.id],
            "#{user1.email},#{user2.email}" => [user1.id, user2.id]
          }.each do |filter, ids|
            get "/groups/#{group.name}/members.json", params: { filter: filter }

            expect(response.status).to eq(200)
            members = response.parsed_body["members"]
            expect(members.map { |m| m["id"] }).to contain_exactly(*ids)
          end
        end

        it "should allow members to be filterable by email" do
          username = 'uniquetest'
          user1.update!(username: username)

          [username.upcase, 'QUEtes'].each do |filter|
            get "/groups/#{group.name}/members.json", params: { filter: filter }

            expect(response.status).to eq(200)
            members = response.parsed_body["members"]
            expect(members.map { |m| m["id"] }).to contain_exactly(user1.id)
          end
        end
      end
    end
  end

  describe "#edit" do
    fab!(:group) { Fabricate(:group) }

    context 'when user is not signed in' do
      it 'should be forbidden' do
        put "/groups/#{group.id}/members.json", params: { usernames: "bob" }
        expect(response).to be_forbidden

        delete "/groups/#{group.id}/members.json", params: { username: "bob" }
        expect(response).to be_forbidden
      end

      context 'with public group' do
        it 'should be forbidden' do
          group.update!(
            public_admission: true,
            public_exit: true
          )

          put "/groups/#{group.id}/members.json", params: { usernames: "bob" }
          expect(response.status).to eq(403)

          delete "/groups/#{group.id}/members.json", params: { username: "bob" }
          expect(response.status).to eq(403)
        end
      end
    end

    context 'when user is not an owner of the group' do
      before do
        sign_in(user)
      end

      it "refuses membership changes to unauthorized users" do
        put "/groups/#{group.id}/members.json", params: { usernames: "bob" }
        expect(response).to be_forbidden

        delete "/groups/#{group.id}/members.json", params: { username: "bob" }
        expect(response).to be_forbidden
      end
    end

    context 'when user is an admin' do
      fab!(:group) { Fabricate(:group, users: [admin], automatic: true) }

      before do
        sign_in(admin)
      end

      it "cannot add members to automatic groups" do
        put "/groups/#{group.id}/members.json", params: { usernames: "bob" }
        expect(response).to be_forbidden

        delete "/groups/#{group.id}/members.json", params: { username: "bob" }
        expect(response).to be_forbidden
      end
    end
  end

  describe "membership edits" do
    describe '#add_members' do
      before do
        sign_in(admin)
      end

      it "can make incremental adds" do
        expect do
          put "/groups/#{group.id}/members.json", params: { usernames: user2.username }
        end.to change { group.users.count }.by(1)

        expect(response.status).to eq(200)

        group_history = GroupHistory.last

        expect(group_history.action).to eq(GroupHistory.actions[:add_user_to_group])
        expect(group_history.acting_user).to eq(admin)
        expect(group_history.target_user).to eq(user2)
      end

      it "cannot add members to automatic groups" do
        group.update!(automatic: true)

        put "/groups/#{group.id}/members.json", params: { usernames: "l77t" }
        expect(response.status).to eq(403)
      end

      it "does not notify users when the param is not present" do
        expect {
          put "/groups/#{group.id}/members.json", params: { usernames: user2.username }
        }.not_to change { Topic.where(archetype: "private_message").count }

        expect(response.status).to eq(200)
      end

      it "notifies users when the param is present" do
        expect {
          put "/groups/#{group.id}/members.json", params: { usernames: user2.username, notify_users: true }
        }.to change { Topic.where(archetype: "private_message").count }.by(1)

        expect(response.status).to eq(200)

        expect(Topic.last.topic_users.map(&:user_id)).to include(Discourse::SYSTEM_USER_ID, user2.id)
      end

      it 'does not add users without sufficient permission' do
        group.add_owner(user)
        sign_in(user)

        put "/groups/#{group.id}/members.json", params: { usernames: other_user.username }
        expect(response.status).to eq(200)
      end

      it 'does not send invites if user cannot invite' do
        group.add_owner(user)
        sign_in(user)

        put "/groups/#{group.id}/members.json", params: { emails: "test@example.com" }
        expect(response.status).to eq(403)
      end

      context "when is able to add several members to a group" do
        fab!(:user1) { Fabricate(:user) }
        fab!(:user2) { Fabricate(:user, username: "UsEr2") }

        it "adds by username" do
          expect do
            put "/groups/#{group.id}/members.json",
              params: { usernames: [user1.username, user2.username.upcase].join(",") }
          end.to change { group.users.count }.by(2)

          expect(response.status).to eq(200)
        end

        it "adds by id" do
          expect do
            put "/groups/#{group.id}/members.json",
              params: { user_ids: [user1.id, user2.id].join(",") }
          end.to change { group.users.count }.by(2)

          expect(response.status).to eq(200)
        end

        it "adds by email" do
          expect do
            put "/groups/#{group.id}/members.json",
              params: { user_emails: [user1.email, user2.email].join(",") }
          end.to change { group.users.count }.by(2)

          expect(response.status).to eq(200)
        end

        it 'adds missing users even if some exists' do
          user2.update!(username: 'alice')
          user3 = Fabricate(:user, username: 'bob')
          [user2, user3].each { |user| group.add(user) }

          expect do
            put "/groups/#{group.id}/members.json",
              params: { user_emails: [user1.email, user2.email, user3.email].join(",") }
          end.to change { group.users.count }.by(1)

          expect(response.status).to eq(200)
        end

        it 'sends invites to new users and ignores existing users' do
          user1.update!(username: 'john')
          user2.update!(username: 'alice')
          [user1, user2].each { |user| group.add(user) }
          emails = ["something@gmail.com", "anotherone@yahoo.com"]
          put "/groups/#{group.id}/members.json",
            params: { user_emails: [user1.email, user2.email].join(","), emails: emails.join(",") }

          expect(response.status).to eq(200)
          expect(response.parsed_body["emails"]).to eq(emails)

          emails.each do |email|
            invite = Invite.find_by(email: email)
            expect(invite.groups).to eq([group])
          end
        end

        it 'displays warning when all members already exists' do
          user1.update!(username: 'john')
          user2.update!(username: 'alice')
          user3 = Fabricate(:user, username: 'bob')
          [user1, user2, user3].each { |user| group.add(user) }

          expect do
            put "/groups/#{group.id}/members.json",
              params: { user_emails: [user1.email, user2.email, user3.email].join(",") }
          end.not_to change { group.users.count }

          expect(response.status).to eq(422)

          expect(response.parsed_body["errors"]).to include(I18n.t(
            "groups.errors.member_already_exist",
            username: "alice, bob, john",
            count: 3
          ))
        end

        it 'display error when try to add to many users at once' do
          stub_const(GroupsController, "ADD_MEMBERS_LIMIT", 1) do
            expect do
              put "/groups/#{group.id}/members.json",
                params: { user_emails: [user1.email, user2.email].join(",") }
            end.not_to change { group.reload.users.count }

            expect(response.status).to eq(422)

            expect(response.parsed_body["errors"]).to include(I18n.t(
              "groups.errors.adding_too_many_users",
              count: 1
            ))
          end
        end
      end

      it "returns 422 if member already exists" do
        put "/groups/#{group.id}/members.json", params: { usernames: user.username }

        expect(response.status).to eq(422)

        expect(response.parsed_body["errors"]).to include(I18n.t(
          "groups.errors.member_already_exist",
          username: user.username,
          count: 1
        ))
      end

      it "returns 400 if member is not found" do
        [
          { usernames: "some thing" },
          { user_ids: "-5,-6" },
          { user_emails: "some@test.org" }
        ].each do |params|
          put "/groups/#{group.id}/members.json", params: params

          expect(response.status).to eq(400)

          body = response.parsed_body

          expect(body["error_type"]).to eq("invalid_parameters")
        end
      end

      it "return a 400 if no user or emails are present" do
        [
          { usernames: "nouserwiththisusername", emails: "" },
          { usernames: "", emails: "" }
        ].each do |params|
          put "/groups/#{group.id}/members.json", params: params
          expect(response.status).to eq(400)
          body = response.parsed_body

          expect(body["error_type"]).to eq("invalid_parameters")
        end
      end

      it "will send invites to each email with group_id set" do
        emails = ["something@gmail.com", "anotherone@yahoo.com"]
        put "/groups/#{group.id}/members.json", params: { emails: emails.join(",") }

        expect(response.status).to eq(200)
        body = response.parsed_body

        expect(body["emails"]).to eq(emails)

        emails.each do |email|
          invite = Invite.find_by(email: email)
          expect(invite.groups).to eq([group])
        end
      end

      it "adds known users by email when DiscourseConnect is enabled" do
        SiteSetting.discourse_connect_url = "https://www.example.com/sso"
        SiteSetting.enable_discourse_connect = true

        expect do
          put "/groups/#{group.id}/members.json", params: { emails: other_user.email }
        end.to change { group.users.count }.by(1)

        expect(response.status).to eq(200)
      end

      it "will find users by email, and invite the correct user" do
        new_user = Fabricate(:user)
        expect(new_user.group_ids.include?(group.id)).to eq(false)

        put "/groups/#{group.id}/members.json", params: { emails: new_user.email }

        expect(new_user.reload.group_ids.include?(group.id)).to eq(true)
      end

      it "will invite the user if their username and email are both invited" do
        new_user = Fabricate(:user)
        put "/groups/#{group.id}/members.json", params: { usernames: new_user.username, emails: new_user.email }
        expect(response.status).to eq(200)
        expect(new_user.reload.group_ids.include?(group.id)).to eq(true)
      end

      context 'with public group' do
        before do
          group.update!(
            public_admission: true,
            public_exit: true
          )
        end

        context 'when admin' do
          it "can make incremental adds" do
            expect do
              put "/groups/#{group.id}/members.json",
                params: { usernames: other_user.username }
            end.to change { group.users.count }.by(1)

            expect(response.status).to eq(200)

            group_history = GroupHistory.last

            expect(group_history.action).to eq(GroupHistory.actions[:add_user_to_group])
            expect(group_history.acting_user).to eq(admin)
            expect(group_history.target_user).to eq(other_user)
          end
        end
      end
    end

    describe '#join' do
      let(:public_group) { Fabricate(:public_group) }

      it 'should allow a user to join a public group' do
        sign_in(user)

        expect do
          put "/groups/#{public_group.id}/join.json"
        end.to change { public_group.users.count }.by(1)

        expect(response.status).to eq(204)
      end

      it 'should not allow a user to join a nonpublic group' do
        sign_in(user)

        expect do
          put "/groups/#{group.id}/join.json"
        end.not_to change { group.users.count }

        expect(response).to be_forbidden
      end

      it 'should not allow an anonymous user to call the join method' do
        expect do
          put "/groups/#{group.id}/join.json"
        end.not_to change { group.users.count }

        expect(response).to be_forbidden
      end

      it 'the join method is idempotent' do
        sign_in(user)

        expect do
          put "/groups/#{public_group.id}/join.json"
        end.to change { public_group.users.count }.by(1)
        expect(response.status).to eq(204)

        expect do
          put "/groups/#{public_group.id}/join.json"
        end.not_to change { public_group.users.count }
        expect(response.status).to eq(204)

        expect do
          put "/groups/#{public_group.id}/join.json"
        end.not_to change { public_group.users.count }
        expect(response.status).to eq(204)
      end
    end

    describe '#remove_member' do
      before do
        sign_in(admin)
      end

      it "cannot remove members from automatic groups" do
        group.update!(automatic: true)

        delete "/groups/#{group.id}/members.json", params: { user_id: 42 }
        expect(response.status).to eq(403)
      end

      it "raises an error if user to be removed is not found" do
        delete "/groups/#{group.id}/members.json", params: { user_id: -10 }
        expect(response.status).to eq(400)
      end

      it "returns skipped_usernames response body when removing a valid user but is not a member of that group" do
        delete "/groups/#{group.id}/members.json", params: { user_id: -1 }

        response_body = response.parsed_body
        expect(response.status).to eq(200)
        expect(response_body["usernames"]).to eq([])
        expect(response_body["skipped_usernames"].first).to eq("system")
      end

      context "when is able to remove a member" do
        it "removes by id" do
          expect do
            delete "/groups/#{group.id}/members.json", params: { user_id: user.id }
          end.to change { group.users.count }.by(-1)

          expect(response.status).to eq(200)
        end

        it "removes by id with integer in json" do
          expect do
            headers = { "CONTENT_TYPE": "application/json" }
            delete "/groups/#{group.id}/members.json", params: "{\"user_id\":#{user.id}}", headers: headers
          end.to change { group.users.count }.by(-1)

          expect(response.status).to eq(200)
        end

        it "removes by username" do
          expect do
            delete "/groups/#{group.id}/members.json", params: { username: user.username }
          end.to change { group.users.count }.by(-1)

          expect(response.status).to eq(200)
        end

        it "removes user.primary_group_id when user is removed from group" do
          user.update!(primary_group_id: group.id)

          delete "/groups/#{group.id}/members.json", params: { user_id: user.id }

          expect(user.reload.primary_group_id).to eq(nil)
        end

        it "removes by user_email" do
          expect do
            delete "/groups/#{group.id}/members.json",
              params: { user_email: user.email }
          end.to change { group.users.count }.by(-1)

          expect(response.status).to eq(200)
        end

        context 'with public group' do
          let(:group) { Fabricate(:public_group, users: [other_user]) }

          context "when admin" do
            it "removes by username" do
              expect do
                delete "/groups/#{group.id}/members.json",
                  params: { username: other_user.username }
              end.to change { group.users.count }.by(-1)

              expect(response.status).to eq(200)
            end
          end

          it 'should not allow a underprivileged user to leave a group for another user' do
            sign_in(user)

            delete "/groups/#{group.id}/members.json",
              params: { username: other_user.username }

            expect(response).to be_forbidden
          end
        end
      end

      describe '#remove_members' do
        context "when is able to remove several members from a group" do
          fab!(:user1) { Fabricate(:user) }
          fab!(:user2) { Fabricate(:user, username: "UsEr2") }
          let(:group1) { Fabricate(:group, users: [user1, user2]) }

          it "removes by username" do
            expect do
              delete "/groups/#{group1.id}/members.json",
                params: { usernames: [user1.username, user2.username.upcase].join(",") }
            end.to change { group1.users.count }.by(-2)
            expect(response.status).to eq(200)
          end

          it "removes by id" do
            expect do
              delete "/groups/#{group1.id}/members.json",
                params: { user_ids: [user1.id, user2.id].join(",") }
            end.to change { group1.users.count }.by(-2)

            expect(response.status).to eq(200)
          end

          it "removes by id with integer in json" do
            expect do
              headers = { "CONTENT_TYPE": "application/json" }
              delete "/groups/#{group1.id}/members.json", params: "{\"user_ids\":#{user1.id}}", headers: headers
            end.to change { group1.users.count }.by(-1)

            expect(response.status).to eq(200)
          end

          it "removes by email" do
            expect do
              delete "/groups/#{group1.id}/members.json",
                params: { user_emails: [user1.email, user2.email].join(",") }
            end.to change { group1.users.count }.by(-2)

            expect(response.status).to eq(200)
          end

          it "only removes users in that group" do
            delete "/groups/#{group1.id}/members.json",
              params: { usernames: [user.username, user2.username].join(",") }

            response_body = response.parsed_body
            expect(response.status).to eq(200)
            expect(response_body["usernames"].first).to eq(user2.username)
            expect(response_body["skipped_usernames"].first).to eq(user.username)
          end
        end
      end
    end

    describe '#leave' do
      let(:group_with_public_exit) { Fabricate(:group, public_exit: true, users: [user]) }

      it 'should allow a user to leave a group with public exit' do
        sign_in(user)

        expect do
          delete "/groups/#{group_with_public_exit.id}/leave.json"
        end.to change { group_with_public_exit.users.count }.by(-1)

        expect(response.status).to eq(204)
      end

      it 'should not allow a user to leave a group without public exit' do
        sign_in(user)

        expect do
          delete "/groups/#{group.id}/leave.json"
        end.not_to change { group.users.count }

        expect(response).to be_forbidden
      end

      it 'should not allow an anonymous user to call the leave method' do
        expect do
          delete "/groups/#{group_with_public_exit.id}/leave.json"
        end.not_to change { group_with_public_exit.users.count }

        expect(response).to be_forbidden
      end

      it 'the leave method is idempotent' do
        sign_in(user)

        expect do
          delete "/groups/#{group_with_public_exit.id}/leave.json"
        end.to change { group_with_public_exit.users.count }.by(-1)
        expect(response.status).to eq(204)

        expect do
          delete "/groups/#{group_with_public_exit.id}/leave.json"
        end.not_to change { group_with_public_exit.users.count }
        expect(response.status).to eq(204)

        expect do
          delete "/groups/#{group_with_public_exit.id}/leave.json"
        end.not_to change { group_with_public_exit.users.count }
        expect(response.status).to eq(204)
      end
    end
  end

  describe "#handle_membership_request" do
    before do
      group.add_owner(user)
      sign_in(user)
    end

    it "sends a private message when accepted" do
      GroupRequest.create!(group: group, user: other_user)
      expect { put "/groups/#{group.id}/handle_membership_request.json", params: { user_id: other_user.id, accept: true } }
        .to change { Topic.count }.by(1)
        .and change { Post.count }.by(1)

      topic = Topic.last
      expect(topic.archetype).to eq(Archetype.private_message)
      expect(topic.title).to eq(I18n.t('groups.request_accepted_pm.title', group_name: group.name))
      expect(topic.first_post.raw).to eq(I18n.t('groups.request_accepted_pm.body', group_name: group.name).strip)
    end
  end

  describe "#histories" do
    context 'when user is not signed in' do
      it 'should raise the right error' do
        get "/groups/#{group.name}/logs.json"
        expect(response.status).to eq(403)
      end
    end

    context 'when user is not a group owner' do
      before do
        sign_in(user)
      end

      it 'should be forbidden' do
        get "/groups/#{group.name}/logs.json"

        expect(response).to be_forbidden
      end
    end

    describe 'when user is a group owner' do
      before do
        group.add_owner(user)
        sign_in(user)
      end

      describe 'when viewing a public group' do
        before do
          group.update!(
            public_admission: true,
            public_exit: true
          )

          GroupActionLogger.new(user, group).log_change_group_settings
        end

        it 'should allow group owner to view history' do
          get "/groups/#{group.name}/logs.json"

          expect(response.status).to eq(200)

          result = response.parsed_body["logs"].find { |entry| entry["subject"] == "public_exit" }

          expect(result["action"]).to eq(GroupHistory.actions[1].to_s)
          expect(result["subject"]).to eq('public_exit')
          expect(result["prev_value"]).to eq('f')
          expect(result["new_value"]).to eq('t')
        end
      end

      it 'should not be allowed to view history of an automatic group' do
        group = Group.find_by(id: Group::AUTO_GROUPS[:admins])

        get "/groups/#{group.name}/logs.json"

        expect(response.status).to eq(403)
      end
    end

    context 'when user is an admin' do
      before do
        sign_in(admin)
      end

      it 'should be able to view history' do
        GroupActionLogger.new(admin, group).log_remove_user_from_group(user)

        get "/groups/#{group.name}/logs.json"

        expect(response.status).to eq(200)

        result = response.parsed_body["logs"].first

        expect(result["action"]).to eq(GroupHistory.actions[3].to_s)
      end

      it 'should be able to view history of automatic groups' do
        group = Group.find_by(id: Group::AUTO_GROUPS[:admins])

        get "/groups/#{group.name}/logs.json"

        expect(response.status).to eq(200)
      end

      it 'should be able to filter through the history' do
        GroupActionLogger.new(admin, group).log_add_user_to_group(user)
        GroupActionLogger.new(admin, group).log_remove_user_from_group(user)

        get "/groups/#{group.name}/logs.json", params: {
          filters: { "action" => "add_user_to_group" }
        }

        expect(response.status).to eq(200)

        logs = response.parsed_body["logs"]

        expect(logs.count).to eq(1)
        expect(logs.first["action"]).to eq(GroupHistory.actions[2].to_s)
      end
    end
  end

  describe '#request_membership' do
    fab!(:new_user) { Fabricate(:user) }

    it 'requires the user to log in' do
      post "/groups/#{group.name}/request_membership.json"
      expect(response.status).to eq(403)
    end

    it 'requires a reason' do
      sign_in(user)

      post "/groups/#{group.name}/request_membership.json"
      expect(response.status).to eq(400)
    end

    it 'checks for duplicates' do
      sign_in(user)

      post "/groups/#{group.name}/request_membership.json",
        params: { reason: 'Please add me in' }

      expect(response.status).to eq(200)

      post "/groups/#{group.name}/request_membership.json",
        params: { reason: 'Please add me in' }

      expect(response.status).to eq(409)
    end

    it 'should create the right PM' do
      owner1 = Fabricate(:user, last_seen_at: Time.zone.now)
      owner2 = Fabricate(:user, last_seen_at: Time.zone.now - 1 .day)
      [owner1, owner2].each { |owner| group.add_owner(owner) }

      sign_in(user)

      post "/groups/#{group.name}/request_membership.json",
        params: { reason: 'Please add me in' }

      expect(response.status).to eq(200)

      post = Post.last
      topic = post.topic
      body = response.parsed_body

      expect(body['relative_url']).to eq(topic.relative_url)
      expect(post.topic.custom_fields['requested_group_id'].to_i).to eq(group.id)
      expect(post.user).to eq(user)

      expect(topic.title).to eq(I18n.t('groups.request_membership_pm.title',
        group_name: group.name
      ))

      expect(post.raw).to start_with('Please add me in')
      expect(topic.archetype).to eq(Archetype.private_message)
      expect(topic.allowed_users).to contain_exactly(user, owner1, owner2)
      expect(topic.allowed_groups).to eq([])
    end
  end

  describe '#search ' do
    fab!(:hidden_group) do
      Fabricate(:group,
        visibility_level: Group.visibility_levels[:owners],
        name: 'KingOfTheNorth'
      )
    end

    before do
      group.update!(
        name: 'GOT',
        full_name: 'Daenerys Targaryen',
        visibility_level: Group.visibility_levels[:logged_on_users]
      )

      hidden_group
    end

    context 'as an anon user' do
      it "returns the right response" do
        get '/groups/search.json'
        expect(response.status).to eq(403)
      end
    end

    context 'as a normal user' do
      it "returns the right response" do
        sign_in(user)

        get '/groups/search.json'

        expect(response.status).to eq(200)
        groups = response.parsed_body

        expected_ids = Group::AUTO_GROUPS.map { |name, id| id }
        expected_ids.delete(Group::AUTO_GROUPS[:everyone])
        expected_ids << group.id

        expect(groups.map { |group| group["id"] }).to contain_exactly(*expected_ids)

        ['GO', 'nerys'].each do |term|
          get "/groups/search.json?term=#{term}"

          expect(response.status).to eq(200)
          groups = response.parsed_body

          expect(groups.length).to eq(1)
          expect(groups.first['id']).to eq(group.id)
        end

        get "/groups/search.json?term=KingOfTheNorth"

        expect(response.status).to eq(200)
        groups = response.parsed_body

        expect(groups).to eq([])
      end
    end

    context 'as a group owner' do
      before do
        hidden_group.add_owner(user)
      end

      it "returns the right response" do
        sign_in(user)

        get "/groups/search.json?term=north"

        expect(response.status).to eq(200)
        groups = response.parsed_body

        expect(groups.length).to eq(1)
        expect(groups.first['id']).to eq(hidden_group.id)
      end
    end

    context 'as an admin' do
      it "returns the right response" do
        sign_in(admin)

        get '/groups/search.json?ignore_automatic=true'

        expect(response.status).to eq(200)
        groups = response.parsed_body

        expect(groups.length).to eq(2)

        expect(groups.map { |group| group['id'] })
          .to contain_exactly(group.id, hidden_group.id)
      end
    end
  end

  describe '#new' do
    describe 'for an anon user' do
      it 'should return 404' do
        get '/groups/custom/new'

        expect(response.status).to eq(404)
      end
    end

    describe 'for a normal user' do
      before { sign_in(user) }

      it 'should return 404' do
        get '/groups/custom/new'

        expect(response.status).to eq(404)
      end
    end

    describe 'for an admin user' do
      before { sign_in(admin) }

      it 'should return 200' do
        get '/groups/custom/new'

        expect(response.status).to eq(200)
      end
    end
  end

  describe '#check_name' do
    describe 'for an anon user' do
      it 'should return the right response' do
        get "/groups/check-name.json", params: { group_name: 'test' }
        expect(response.status).to eq(403)
      end
    end

    it 'should return the right response' do
      sign_in(Fabricate(:user))
      SiteSetting.reserved_usernames = 'test|donkey'
      get "/groups/check-name.json", params: { group_name: 'test' }

      expect(response.status).to eq(200)
      expect(response.parsed_body["available"]).to eq(true)
    end
  end

  describe "#permissions" do
    before do
      sign_in(other_user)
    end

    it "ensures the group can be seen" do
      group.update!(visibility_level: Group.visibility_levels[:owners])

      get "/groups/#{group.name}/permissions.json"

      expect(response.status).to eq(404)
    end

    describe "with varying category permissions" do
      fab!(:category) { Fabricate(:category) }

      before do
        category.set_permissions("#{group.name}": :full)
        category.save!
      end

      it "does not return categories the user cannot see" do
        get "/groups/#{group.name}/permissions.json"

        expect(response.status).to eq(200)
        expect(response.parsed_body).to eq([])
      end

      it "returns categories the user can see" do
        group.add(other_user)

        get "/groups/#{group.name}/permissions.json"

        expect(response.status).to eq(200)
        expect(response.parsed_body.count).to eq(1)
        expect(response.parsed_body.first["category"]["id"]).to eq(category.id)
      end
    end

    it "returns categories alphabetically" do
      sign_in(user)

      ["Three", "New Cat", "Abc", "Hello"].each do |name|
        category = Fabricate(:category, name: name)
        category.set_permissions("#{group.name}": :full)
        category.save!
      end

      get "/groups/#{group.name}/permissions.json"

      expect(response.status).to eq(200)

      expect(response.parsed_body.map { |permission| permission["category"]["name"] }).to eq(
        ["Abc", "Hello", "New Cat", "Three"]
      )
    end
  end

  describe "#test_email_settings" do
    let(:params) do
      {
        protocol: protocol,
        ssl: ssl,
        port: port,
        host: host,
        username: username,
        password: password
      }
    end

    before do
      sign_in(user)
      group.group_users.where(user: user).last.update(owner: user)
    end

    context "when validating smtp" do
      let(:protocol) { "smtp" }
      let(:username) { "test@gmail.com" }
      let(:password) { "password" }
      let(:domain) { nil }
      let(:ssl) { true }
      let(:host) { "smtp.somemailsite.com" }
      let(:port) { 587 }

      context "when an error is raised" do
        before do
          EmailSettingsValidator.expects(:validate_smtp).raises(Net::SMTPAuthenticationError, "Invalid credentials")
        end
        it "uses the friendly error message functionality to return the message to the user" do
          post "/groups/#{group.id}/test_email_settings.json", params: params
          expect(response.status).to eq(422)
          expect(response.parsed_body["errors"]).to include(I18n.t("email_settings.smtp_authentication_error"))
        end
      end
    end

    context "when validating imap" do
      let(:protocol) { "imap" }
      let(:username) { "test@gmail.com" }
      let(:password) { "password" }
      let(:domain) { nil }
      let(:ssl) { true }
      let(:host) { "imap.somemailsite.com" }
      let(:port) { 993 }

      it "validates with the correct TLS settings" do
        EmailSettingsValidator.expects(:validate_imap).with(
          has_entry(ssl: true)
        )
        post "/groups/#{group.id}/test_email_settings.json", params: params
        expect(response.status).to eq(200)
      end

      context "when an error is raised" do
        before do
          EmailSettingsValidator.expects(:validate_imap).raises(
            Net::IMAP::NoResponseError, stub(data: stub(text: "Invalid credentials"))
          )
        end
        it "uses the friendly error message functionality to return the message to the user" do
          post "/groups/#{group.id}/test_email_settings.json", params: params
          expect(response.status).to eq(422)
          expect(response.parsed_body["errors"]).to include(I18n.t("email_settings.imap_authentication_error"))
        end
      end
    end

    describe "global param validation and rate limit" do
      let(:protocol) { "smtp" }
      let(:host) { "smtp.gmail.com" }
      let(:port) { 587 }
      let(:username) { "test@gmail.com" }
      let(:password) { "password" }
      let(:ssl) { true }

      context "when the protocol is not accepted" do
        let(:protocol) { "sigma" }
        it "raises an invalid params error" do
          post "/groups/#{group.id}/test_email_settings.json", params: params
          expect(response.status).to eq(400)
          expect(response.parsed_body["errors"].first).to match(/Valid protocols to test are smtp and imap/)
        end
      end

      context "when user does not have access to the group" do
        before do
          group.group_users.destroy_all
        end
        it "errors if the user does not have access to the group" do
          post "/groups/#{group.id}/test_email_settings.json", params: params

          expect(response.status).to eq(403)
        end
      end

      context "when rate limited" do
        it "rate limits anon searches per user" do
          RateLimiter.enable
          RateLimiter.clear_all!

          5.times do
            post "/groups/#{group.id}/test_email_settings.json", params: params
          end
          post "/groups/#{group.id}/test_email_settings.json", params: params
          expect(response.status).to eq(429)
        end
      end
    end
  end
end