# frozen_string_literal: true

require "csv"

RSpec.describe Admin::WatchedWordsController do
  fab!(:admin)
  fab!(:user)

  describe "#index" do
    context "when logged in as non-staff user" do
      before { sign_in(user) }

      it "does not return watched words" do
        get "/admin/customize/watched_words.json"

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

    context "when logged in as a staff user" do
      fab!(:word1) { Fabricate(:watched_word, action: WatchedWord.actions[:block]) }
      fab!(:word2) { Fabricate(:watched_word, action: WatchedWord.actions[:block]) }
      fab!(:word3) { Fabricate(:watched_word, action: WatchedWord.actions[:censor]) }
      fab!(:word4) { Fabricate(:watched_word, action: WatchedWord.actions[:censor]) }

      before { sign_in(admin) }

      it "returns all watched words" do
        get "/admin/customize/watched_words.json"

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

        watched_words = response.parsed_body

        expect(watched_words["actions"]).to match_array(WatchedWord.actions.keys.map(&:to_s))
        expect(watched_words["words"].length).to eq(4)
        expect(watched_words["words"]).to include(
          hash_including(
            "id" => word1.id,
            "word" => word1.word,
            "regexp" => WordWatcher.word_to_regexp(word1.word, engine: :js),
            "case_sensitive" => false,
            "action" => "block",
          ),
          hash_including(
            "id" => word4.id,
            "word" => word4.word,
            "regexp" => WordWatcher.word_to_regexp(word4.word, engine: :js),
            "case_sensitive" => false,
            "action" => "censor",
          ),
        )
        expect(watched_words["compiled_regular_expressions"]["block"].first).to eq(
          WordWatcher.serialized_regexps_for_action(:block, engine: :js).first.deep_stringify_keys,
        )
      end
    end
  end

  describe "#destroy" do
    fab!(:watched_word)

    context "when logged in as a non-staff user" do
      before { sign_in(user) }

      it "can't delete a watched word" do
        delete "/admin/customize/watched_words/#{watched_word.id}.json"

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

    context "when logged in as staff user" do
      before { sign_in(admin) }

      it "should return the right response when given an invalid id param" do
        delete "/admin/customize/watched_words/9999.json"

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

      it "should be able to delete a watched word" do
        delete "/admin/customize/watched_words/#{watched_word.id}.json"

        expect(response.status).to eq(200)
        expect(WatchedWord.find_by(id: watched_word.id)).to eq(nil)
        expect(UserHistory.where(action: UserHistory.actions[:watched_word_destroy]).count).to eq(1)
      end

      it "should delete watched word group if it's the last word" do
        watched_word_group = Fabricate(:watched_word_group)
        watched_word = watched_word_group.watched_words.first

        delete "/admin/customize/watched_words/#{watched_word.id}.json"

        expect(response.status).to eq(200)
        expect(WatchedWordGroup.exists?(id: watched_word_group.id)).to be_falsey
        expect(WatchedWord.exists?(id: watched_word.id)).to be_falsey
        expect(
          UserHistory.where(action: UserHistory.actions[:delete_watched_word_group]).count,
        ).to eq(1)
      end
    end
  end

  describe "#create" do
    context "when logged in as a non-staff user" do
      before { sign_in(user) }

      it "can't create a watched word" do
        post "/admin/customize/watched_words.json", params: { action_key: "flag", word: "Fr33" }

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

    context "when logged in as a staff user" do
      before { sign_in(admin) }

      it "creates a word with default case sensitivity" do
        expect {
          post "/admin/customize/watched_words.json",
               params: {
                 action_key: "flag",
                 words: %w[Deals Offer],
               }
        }.to change { WatchedWord.count }.by(2)

        expect(response.status).to eq(200)
        expect(WatchedWord.take.word).to eq("Deals")
        expect(WatchedWord.last.word).to eq("Offer")
        expect(
          UserHistory.where(action: UserHistory.actions[:create_watched_word_group]).count,
        ).to eq(1)
      end

      it "creates a word with the given case sensitivity" do
        post "/admin/customize/watched_words.json",
             params: {
               action_key: "flag",
               words: ["PNG"],
               case_sensitive: true,
             }

        expect(response.status).to eq(200)
        expect(WatchedWord.take.case_sensitive?).to eq(true)
        expect(WatchedWord.take.word).to eq("PNG")
      end
    end
  end

  describe "#upload" do
    context "when logged in as a non-staff user" do
      before { sign_in(user) }

      it "can't create watched words via file upload" do
        post "/admin/customize/watched_words/upload.json",
             params: {
               action_key: "flag",
               file: Rack::Test::UploadedFile.new(file_from_fixtures("words.csv", "csv")),
             }

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

    context "when logged in as admin" do
      before do
        sign_in(admin)
        Fabricate(:tag, name: "tag1")
        Fabricate(:tag, name: "tag2")
        Fabricate(:tag, name: "tag3")
      end

      it "creates the words from the file" do
        post "/admin/customize/watched_words/upload.json",
             params: {
               action_key: "flag",
               file: Rack::Test::UploadedFile.new(file_from_fixtures("words.csv", "csv")),
             }

        expect(response.status).to eq(200)
        expect(WatchedWord.count).to eq(6)

        expect(WatchedWord.pluck(:word)).to contain_exactly(
          "thread",
          "线",
          "धागा",
          "실",
          "tråd",
          "нить",
        )

        expect(WatchedWord.pluck(:action).uniq).to eq([WatchedWord.actions[:flag]])
        expect(UserHistory.where(action: UserHistory.actions[:watched_word_create]).count).to eq(6)
      end

      it "creates the words from the file" do
        post "/admin/customize/watched_words/upload.json",
             params: {
               action_key: "tag",
               file: Rack::Test::UploadedFile.new(file_from_fixtures("words_tag.csv", "csv")),
             }

        expect(response.status).to eq(200)
        expect(WatchedWord.count).to eq(2)

        expect(WatchedWord.pluck(:word, :replacement)).to contain_exactly(
          %w[hello tag1,tag2],
          %w[world tag2,tag3],
        )

        expect(WatchedWord.pluck(:action).uniq).to eq([WatchedWord.actions[:tag]])
        expect(UserHistory.where(action: UserHistory.actions[:watched_word_create]).count).to eq(2)
      end

      it "creates case-sensitive words from the file" do
        post "/admin/customize/watched_words/upload.json",
             params: {
               action_key: "flag",
               file:
                 Rack::Test::UploadedFile.new(
                   file_from_fixtures("words_case_sensitive.csv", "csv"),
                 ),
             }

        expect(response.status).to eq(200)
        expect(WatchedWord.pluck(:word, :case_sensitive)).to contain_exactly(
          ["hello", true],
          ["UN", true],
          ["world", false],
          ["test", false],
        )
      end
    end
  end

  describe "#download" do
    context "when not logged in as admin" do
      it "doesn't allow performing #download" do
        get "/admin/customize/watched_words/action/block/download"
        expect(response.status).to eq(404)
      end
    end

    context "when logged in as admin" do
      before do
        sign_in(admin)
        Fabricate(:tag, name: "tag1")
        Fabricate(:tag, name: "tag2")
        Fabricate(:tag, name: "tag3")
      end

      it "words of different actions are downloaded separately" do
        block_word_1 = Fabricate(:watched_word, action: WatchedWord.actions[:block])
        block_word_2 = Fabricate(:watched_word, action: WatchedWord.actions[:block])
        censor_word_1 = Fabricate(:watched_word, action: WatchedWord.actions[:censor])
        autotag_1 =
          Fabricate(:watched_word, action: WatchedWord.actions[:tag], replacement: "tag1,tag2")
        autotag_2 =
          Fabricate(:watched_word, action: WatchedWord.actions[:tag], replacement: "tag3,tag2")

        get "/admin/customize/watched_words/action/block/download"
        expect(response.status).to eq(200)
        block_words = response.body.split("\n")
        expect(block_words).to contain_exactly(block_word_1.word, block_word_2.word)

        get "/admin/customize/watched_words/action/censor/download"
        expect(response.status).to eq(200)
        censor_words = response.body.split("\n")
        expect(censor_words).to contain_exactly(censor_word_1.word)

        get "/admin/customize/watched_words/action/tag/download"
        expect(response.status).to eq(200)
        tag_words = response.body.split("\n").map(&:parse_csv)
        expect(tag_words).to contain_exactly(
          [autotag_1.word, autotag_1.replacement],
          [autotag_2.word, autotag_2.replacement],
        )
      end
    end
  end

  describe "#clear_all" do
    context "with non admins" do
      it "doesn't allow them to perform #clear_all" do
        word = Fabricate(:watched_word, action: WatchedWord.actions[:block])
        delete "/admin/customize/watched_words/action/block"
        expect(response.status).to eq(404)
        expect(WatchedWord.pluck(:word)).to include(word.word)
      end
    end

    context "with admins" do
      before { sign_in(admin) }

      it "allows them to perform #clear_all" do
        word = Fabricate(:watched_word, action: WatchedWord.actions[:block])
        delete "/admin/customize/watched_words/action/block.json"
        expect(response.status).to eq(200)
        expect(WatchedWord.pluck(:word)).not_to include(word.word)
        expect(UserHistory.where(action: UserHistory.actions[:watched_word_destroy]).count).to eq(1)
      end

      it "doesn't delete words of multiple actions in one call" do
        block_word = Fabricate(:watched_word, action: WatchedWord.actions[:block])
        flag_word = Fabricate(:watched_word, action: WatchedWord.actions[:flag])

        delete "/admin/customize/watched_words/action/flag.json"
        expect(response.status).to eq(200)
        all_words = WatchedWord.pluck(:word)
        expect(all_words).to include(block_word.word)
        expect(all_words).not_to include(flag_word.word)
        expect(UserHistory.where(action: UserHistory.actions[:watched_word_destroy]).count).to eq(1)
      end
    end
  end
end