# frozen_string_literal: true

require 'rails_helper'
require 'seed_data/categories'

describe SeedData::Categories do
  subject { SeedData::Categories.with_default_locale }

  def create_category(name = "staff_category_id")
    subject.create(site_setting_names: [name])
  end

  def description_post(category)
    Post.find_by(topic_id: category.topic_id)
  end

  describe "#create" do
    def permissions(group, type)
      {
        group_id: Group::AUTO_GROUPS[group],
        permission_type: CategoryGroup.permission_types[type]
      }
    end

    it "creates a missing category" do
      expect { create_category }
        .to change { Category.count }.by(1)
        .and change { Topic.count }.by(1)

      category = Category.last
      expect(category.name).to eq(I18n.t("staff_category_name"))
      expect(category.topic_id).to be_present
      expect(category.user_id).to eq(Discourse::SYSTEM_USER_ID)
      expect(category.category_groups.count).to eq(1)
      expect(category.category_groups.first).to have_attributes(permissions(:staff, :full))
      expect(Topic.exists?(category.topic_id))
      expect(description_post(category).raw).to eq(I18n.t("staff_category_description"))
      expect(SiteSetting.staff_category_id).to eq(category.id)
    end

    context "with existing category" do
      before { create_category }

      it "does not create another category" do
        expect { create_category }
          .to change { Category.count }.by(0)
          .and change { Topic.count }.by(0)
      end

      it "creates a missing 'About Category' topic" do
        category = Category.last
        Topic.delete(category.topic_id)

        expect { create_category }
          .to change { Category.count }.by(0)
          .and change { Topic.count }.by(1)

        category.reload
        expect(description_post(category).raw).to eq(I18n.t("staff_category_description"))
      end

      it "overwrites permissions when permissions are forced" do
        category = Category.last
        category.set_permissions(everyone: :full)
        category.save!

        expect(category.category_groups.count).to eq(0)

        expect { create_category }
          .to change { CategoryGroup.count }.by(1)

        category.reload
        expect(category.category_groups.count).to eq(1)
        expect(category.category_groups.first).to have_attributes(permissions(:staff, :full))
      end

      it "overwrites permissions even when subcategory has less restrictive permissions" do
        category = Category.last
        category.set_permissions(everyone: :full)
        category.save!

        group = Fabricate(:group)

        subcategory = Fabricate(:category, name: "child", parent_category_id: category.id)
        subcategory.set_permissions(group => :full)
        subcategory.save!

        expect { create_category }
          .to change { CategoryGroup.count }.by(1)

        category.reload
        expect(category.category_groups.count).to eq(1)
        expect(category.category_groups.first).to have_attributes(permissions(:staff, :full))
      end
    end

    it "does not override permissions of existing category when not forced" do
      create_category("lounge_category_id")

      category = Category.last
      category.set_permissions(trust_level_2: :full)
      category.save!

      expect(category.category_groups.first).to have_attributes(permissions(:trust_level_2, :full))

      expect { create_category("lounge_category_id") }
        .to change { CategoryGroup.count }.by(0)

      category.reload
      expect(category.category_groups.first).to have_attributes(permissions(:trust_level_2, :full))
    end
  end

  describe "#update" do
    def update_category(name = "staff_category_id", skip_changed: false)
      subject.update(site_setting_names: [name], skip_changed: skip_changed)
    end

    before do
      create_category
      Category.last.update!(name: "Foo", slug: "foo")
    end

    it "updates an existing category" do
      category = Category.last
      description_post(category).revise(Discourse.system_user, raw: "Description for Foo category.")

      update_category

      category.reload
      expect(category.name).to eq(I18n.t("staff_category_name"))
      expect(category.slug).to eq(Slug.for(I18n.t("staff_category_name")))
      expect(description_post(category).raw).to eq(I18n.t("staff_category_description"))
    end

    it "skips category when `skip_changed` is true and description was changed" do
      category = Category.last
      description_post(category).revise(Fabricate(:admin), raw: "Description for Foo category.")

      update_category(skip_changed: true)

      category.reload
      expect(category.name).to eq("Foo")
      expect(category.slug).to eq("foo")
      expect(description_post(category).raw).to eq("Description for Foo category.")
    end

    it "works when the category name is already used by another category" do
      Fabricate(:category, name: I18n.t("staff_category_name"))

      update_category

      category = Category.find(SiteSetting.staff_category_id)
      expect(category.name).to_not eq(I18n.t("staff_category_name"))
      expect(category.name).to start_with(I18n.t("staff_category_name"))
    end
  end

  describe "#reseed_options" do
    it "returns only existing categories as options" do
      create_category("meta_category_id")
      create_category("lounge_category_id")
      Post.last.revise(Fabricate(:admin), raw: "Hello world")

      expected_options = [
        { id: "uncategorized_category_id", name: I18n.t("uncategorized_category_name"), selected: true },
        { id: "meta_category_id", name: I18n.t("meta_category_name"), selected: true },
        { id: "lounge_category_id", name: I18n.t("vip_category_name"), selected: false }
      ]

      expect(subject.reseed_options).to eq(expected_options)
    end
  end
end