# frozen_string_literal: true

require "rails_helper"

RSpec.describe Chat::Api::ChatChatablesController do
  before do
    SiteSetting.chat_enabled = true
    SiteSetting.chat_allowed_groups = Group::AUTO_GROUPS[:everyone]
  end

  describe "#index" do
    fab!(:user) { Fabricate(:user, username: "johndoe", name: "John Doe") }

    describe "without chat permissions" do
      it "errors errors for anon" do
        get "/chat/api/chatables", params: { filter: "so" }
        expect(response.status).to eq(403)
      end

      it "errors when user cannot chat" do
        SiteSetting.chat_allowed_groups = Group::AUTO_GROUPS[:staff]
        sign_in(user)
        get "/chat/api/chatables", params: { filter: "so" }
        expect(response.status).to eq(403)
      end
    end

    describe "with chat permissions" do
      fab!(:other_user) { Fabricate(:user, username: "janemay", name: "Jane May") }
      fab!(:admin) { Fabricate(:admin, username: "andyjones", name: "Andy Jones") }
      fab!(:category) { Fabricate(:category) }
      fab!(:chat_channel) { Fabricate(:category_channel, chatable: category) }
      fab!(:dm_chat_channel) { Fabricate(:direct_message_channel, users: [user, admin]) }

      before do
        chat_channel.update(name: "something")
        sign_in(user)
      end

      it "returns the correct channels with filter 'so'" do
        get "/chat/api/chatables", params: { filter: "so" }
        expect(response.status).to eq(200)
        expect(response.parsed_body["public_channels"][0]["id"]).to eq(chat_channel.id)
        expect(response.parsed_body["direct_message_channels"].count).to eq(0)
        expect(response.parsed_body["users"].count).to eq(0)
      end

      it "returns the correct channels with filter 'something'" do
        get "/chat/api/chatables", params: { filter: "something" }
        expect(response.status).to eq(200)
        expect(response.parsed_body["public_channels"][0]["id"]).to eq(chat_channel.id)
        expect(response.parsed_body["direct_message_channels"].count).to eq(0)
        expect(response.parsed_body["users"].count).to eq(0)
      end

      it "returns the correct channels with filter 'andyjones'" do
        get "/chat/api/chatables", params: { filter: "andyjones" }
        expect(response.status).to eq(200)
        expect(response.parsed_body["public_channels"].count).to eq(0)
        expect(response.parsed_body["direct_message_channels"][0]["id"]).to eq(dm_chat_channel.id)
        expect(response.parsed_body["users"].count).to eq(0)
      end

      it "returns the current user inside the users array if their username matches the filter too" do
        user.update!(username: "andysmith")
        get "/chat/api/chatables", params: { filter: "andy" }
        expect(response.status).to eq(200)
        expect(response.parsed_body["direct_message_channels"][0]["id"]).to eq(dm_chat_channel.id)
        expect(response.parsed_body["users"].map { |u| u["id"] }).to match_array([user.id])
      end

      it "returns no channels with a whacky filter" do
        get "/chat/api/chatables", params: { filter: "hello good sir" }
        expect(response.status).to eq(200)
        expect(response.parsed_body["public_channels"].count).to eq(0)
        expect(response.parsed_body["direct_message_channels"].count).to eq(0)
        expect(response.parsed_body["users"].count).to eq(0)
      end

      it "only returns open channels" do
        chat_channel.update(status: ChatChannel.statuses[:closed])
        get "/chat/api/chatables", params: { filter: "so" }
        expect(response.parsed_body["public_channels"].count).to eq(0)

        chat_channel.update(status: ChatChannel.statuses[:read_only])
        get "/chat/api/chatables", params: { filter: "so" }
        expect(response.parsed_body["public_channels"].count).to eq(0)

        chat_channel.update(status: ChatChannel.statuses[:archived])
        get "/chat/api/chatables", params: { filter: "so" }
        expect(response.parsed_body["public_channels"].count).to eq(0)

        # Now set status to open and the channel is there!
        chat_channel.update(status: ChatChannel.statuses[:open])
        get "/chat/api/chatables", params: { filter: "so" }
        expect(response.parsed_body["public_channels"][0]["id"]).to eq(chat_channel.id)
      end

      it "only finds users by username_lower if not enable_names" do
        SiteSetting.enable_names = false
        get "/chat/api/chatables", params: { filter: "Andy J" }
        expect(response.status).to eq(200)
        expect(response.parsed_body["public_channels"].count).to eq(0)
        expect(response.parsed_body["direct_message_channels"].count).to eq(0)

        get "/chat/api/chatables", params: { filter: "andyjones" }
        expect(response.status).to eq(200)
        expect(response.parsed_body["public_channels"].count).to eq(0)
        expect(response.parsed_body["direct_message_channels"][0]["id"]).to eq(dm_chat_channel.id)
      end

      it "only finds users by username if prioritize_username_in_ux" do
        SiteSetting.prioritize_username_in_ux = true
        get "/chat/api/chatables", params: { filter: "Andy J" }
        expect(response.status).to eq(200)
        expect(response.parsed_body["public_channels"].count).to eq(0)
        expect(response.parsed_body["direct_message_channels"].count).to eq(0)

        get "/chat/api/chatables", params: { filter: "andyjones" }
        expect(response.status).to eq(200)
        expect(response.parsed_body["public_channels"].count).to eq(0)
        expect(response.parsed_body["direct_message_channels"][0]["id"]).to eq(dm_chat_channel.id)
      end

      it "can find users by name or username if not prioritize_username_in_ux and enable_names" do
        SiteSetting.prioritize_username_in_ux = false
        SiteSetting.enable_names = true
        get "/chat/api/chatables", params: { filter: "Andy J" }
        expect(response.status).to eq(200)
        expect(response.parsed_body["public_channels"].count).to eq(0)
        expect(response.parsed_body["direct_message_channels"][0]["id"]).to eq(dm_chat_channel.id)

        get "/chat/api/chatables", params: { filter: "andyjones" }
        expect(response.status).to eq(200)
        expect(response.parsed_body["public_channels"].count).to eq(0)
        expect(response.parsed_body["direct_message_channels"][0]["id"]).to eq(dm_chat_channel.id)
      end

      it "does not return DM channels for users who do not have chat enabled" do
        admin.user_option.update!(chat_enabled: false)
        get "/chat/api/chatables", params: { filter: "andyjones" }
        expect(response.status).to eq(200)
        expect(response.parsed_body["direct_message_channels"].count).to eq(0)
      end

      it "does not return DM channels for users who are not in the chat allowed group" do
        group = Fabricate(:group, name: "chatpeeps")
        SiteSetting.chat_allowed_groups = group.id
        GroupUser.create(user: user, group: group)
        dm_chat_channel_2 = Fabricate(:direct_message_channel, users: [user, other_user])

        get "/chat/api/chatables", params: { filter: "janemay" }
        expect(response.status).to eq(200)
        expect(response.parsed_body["direct_message_channels"].count).to eq(0)

        GroupUser.create(user: other_user, group: group)
        get "/chat/api/chatables", params: { filter: "janemay" }
        expect(response.status).to eq(200)
        expect(response.parsed_body["direct_message_channels"][0]["id"]).to eq(dm_chat_channel_2.id)
      end

      it "returns DM channels for staff users even if they are not in chat_allowed_groups" do
        group = Fabricate(:group, name: "chatpeeps")
        SiteSetting.chat_allowed_groups = group.id
        GroupUser.create(user: user, group: group)

        get "/chat/api/chatables", params: { filter: "andyjones" }
        expect(response.status).to eq(200)
        expect(response.parsed_body["direct_message_channels"][0]["id"]).to eq(dm_chat_channel.id)
      end

      it "returns followed channels" do
        Fabricate(
          :user_chat_channel_membership,
          user: user,
          chat_channel: chat_channel,
          following: true,
        )

        get "/chat/api/chatables", params: { filter: chat_channel.name }

        expect(response.status).to eq(200)
        expect(response.parsed_body["public_channels"][0]["id"]).to eq(chat_channel.id)
      end

      it "returns not followed channels" do
        Fabricate(
          :user_chat_channel_membership,
          user: user,
          chat_channel: chat_channel,
          following: false,
        )

        get "/chat/api/chatables", params: { filter: chat_channel.name }

        expect(response.status).to eq(200)
        expect(response.parsed_body["public_channels"][0]["id"]).to eq(chat_channel.id)
      end
    end
  end
end