# frozen_string_literal: true

RSpec.describe Auth::ManagedAuthenticator do
  let(:authenticator) do
    Class
      .new(described_class) do
        def name
          "myauth"
        end

        def primary_email_verified?(auth_token)
          auth_token[:info][:email_verified]
        end
      end
      .new
  end

  let(:hash) do
    OmniAuth::AuthHash.new(
      provider: "myauth",
      uid: "1234",
      info: {
        name: "Best Display Name",
        email: "awesome@example.com",
        nickname: "IAmGroot",
        email_verified: true,
      },
      credentials: {
        token: "supersecrettoken",
      },
      extra: {
        raw_info: {
          randominfo: "some info",
        },
      },
    )
  end

  let(:create_hash) { OmniAuth::AuthHash.new(provider: "myauth", uid: "1234") }

  def create_auth_result(attrs)
    auth_result = Auth::Result.new
    attrs.each { |k, v| auth_result.send("#{k}=", v) }
    auth_result
  end

  describe "after_authenticate" do
    it "can match account from an existing association" do
      user = Fabricate(:user)
      associated =
        UserAssociatedAccount.create!(
          user: user,
          provider_name: "myauth",
          provider_uid: "1234",
          last_used: 1.year.ago,
        )
      result = authenticator.after_authenticate(hash)

      expect(result.user.id).to eq(user.id)
      associated.reload
      expect(associated.last_used).to be >= 1.day.ago
      expect(associated.info["name"]).to eq("Best Display Name")
      expect(associated.info["email"]).to eq("awesome@example.com")
      expect(associated.credentials["token"]).to eq("supersecrettoken")
      expect(associated.extra["raw_info"]["randominfo"]).to eq("some info")
    end

    it "only sets email valid for present strings" do
      # (Twitter sometimes sends empty email strings)
      result =
        authenticator.after_authenticate(
          create_hash.merge(info: { email: "email@example.com", email_verified: true }),
        )
      expect(result.email_valid).to eq(true)

      result =
        authenticator.after_authenticate(
          create_hash.merge(info: { email: "", email_verified: true }),
        )
      expect(result.email_valid).to be_falsey

      result =
        authenticator.after_authenticate(
          create_hash.merge(info: { email: nil, email_verified: true }),
        )
      expect(result.email_valid).to be_falsey
    end

    it "does not set email valid if email_verified is false" do
      result =
        authenticator.after_authenticate(
          create_hash.merge(info: { email: "email@example.com", email_verified: false }),
        )
      expect(result.email_valid).to eq(false)
    end

    describe "connecting to another user account" do
      fab!(:user1) { Fabricate(:user) }
      fab!(:user2) { Fabricate(:user) }
      before do
        UserAssociatedAccount.create!(user: user1, provider_name: "myauth", provider_uid: "1234")
      end

      it "works by default" do
        result = authenticator.after_authenticate(hash, existing_account: user2)
        expect(result.user.id).to eq(user2.id)
        expect(UserAssociatedAccount.exists?(user_id: user1.id)).to eq(false)
        expect(UserAssociatedAccount.exists?(user_id: user2.id)).to eq(true)
      end

      it "still works if another user has a matching email" do
        Fabricate(:user, email: hash.dig(:info, :email))
        result = authenticator.after_authenticate(hash, existing_account: user2)
        expect(result.user.id).to eq(user2.id)
        expect(UserAssociatedAccount.exists?(user_id: user1.id)).to eq(false)
        expect(UserAssociatedAccount.exists?(user_id: user2.id)).to eq(true)
      end

      it "does not work when disabled" do
        authenticator =
          Class
            .new(described_class) do
              def name
                "myauth"
              end
              def can_connect_existing_user?
                false
              end
            end
            .new
        result = authenticator.after_authenticate(hash, existing_account: user2)
        expect(result.user.id).to eq(user1.id)
        expect(UserAssociatedAccount.exists?(user_id: user1.id)).to eq(true)
        expect(UserAssociatedAccount.exists?(user_id: user2.id)).to eq(false)
      end
    end

    describe "match by email" do
      it "downcases the email address from the authprovider" do
        result =
          authenticator.after_authenticate(hash.deep_merge(info: { email: "HELLO@example.com" }))
        expect(result.email).to eq("hello@example.com")
      end

      it "works normally" do
        user = Fabricate(:user)
        result = authenticator.after_authenticate(hash.deep_merge(info: { email: user.email }))
        expect(result.user.id).to eq(user.id)
        expect(
          UserAssociatedAccount.find_by(provider_name: "myauth", provider_uid: "1234").user_id,
        ).to eq(user.id)
      end

      it "works if there is already an association with the target account" do
        user = Fabricate(:user, email: "awesome@example.com")
        result = authenticator.after_authenticate(hash)
        expect(result.user.id).to eq(user.id)
      end

      it "does not match if match_by_email is false" do
        authenticator =
          Class
            .new(described_class) do
              def name
                "myauth"
              end
              def match_by_email
                false
              end
            end
            .new
        user = Fabricate(:user, email: "awesome@example.com")
        result = authenticator.after_authenticate(hash)
        expect(result.user).to eq(nil)
      end
    end

    context "when no matching user" do
      it "returns the correct information" do
        expect {
          result = authenticator.after_authenticate(hash)
          expect(result.user).to eq(nil)
          expect(result.username).to eq("IAmGroot")
          expect(result.email).to eq("awesome@example.com")
        }.to change { UserAssociatedAccount.count }.by(1)
        expect(UserAssociatedAccount.last.user).to eq(nil)
        expect(UserAssociatedAccount.last.info["nickname"]).to eq("IAmGroot")
      end

      it "works if there is already an association with the target account" do
        user = Fabricate(:user, email: "awesome@example.com")
        result = authenticator.after_authenticate(hash)
        expect(result.user.id).to eq(user.id)
      end

      it "works if there is no email" do
        expect {
          result = authenticator.after_authenticate(hash.deep_merge(info: { email: nil }))
          expect(result.user).to eq(nil)
          expect(result.username).to eq("IAmGroot")
          expect(result.email).to eq(nil)
        }.to change { UserAssociatedAccount.count }.by(1)
        expect(UserAssociatedAccount.last.user).to eq(nil)
        expect(UserAssociatedAccount.last.info["nickname"]).to eq("IAmGroot")
      end

      it "will ignore name when equal to email" do
        result = authenticator.after_authenticate(hash.deep_merge(info: { name: hash.info.email }))
        expect(result.email).to eq(hash.info.email)
        expect(result.name).to eq(nil)
      end
    end

    describe "avatar on update" do
      fab!(:user) { Fabricate(:user) }
      let!(:associated) do
        UserAssociatedAccount.create!(user: user, provider_name: "myauth", provider_uid: "1234")
      end

      it "schedules the job upon update correctly" do
        # No image supplied, do not schedule
        expect { result = authenticator.after_authenticate(hash) }.not_to change {
          Jobs::DownloadAvatarFromUrl.jobs.count
        }

        # Image supplied, schedule
        expect {
          result =
            authenticator.after_authenticate(
              hash.deep_merge(info: { image: "https://some.domain/image.jpg" }),
            )
        }.to change { Jobs::DownloadAvatarFromUrl.jobs.count }.by(1)

        # User already has profile picture, don't schedule
        user.user_avatar = Fabricate(:user_avatar, custom_upload: Fabricate(:upload))
        user.save!
        expect {
          result =
            authenticator.after_authenticate(
              hash.deep_merge(info: { image: "https://some.domain/image.jpg" }),
            )
        }.not_to change { Jobs::DownloadAvatarFromUrl.jobs.count }
      end
    end

    describe "profile on update" do
      fab!(:user) { Fabricate(:user) }
      let!(:associated) do
        UserAssociatedAccount.create!(user: user, provider_name: "myauth", provider_uid: "1234")
      end

      it "updates the user's location and bio, unless already set" do
        { description: :bio_raw, location: :location }.each do |auth_hash_key, profile_key|
          user.user_profile.update(profile_key => "Initial Value")
          # No value supplied, do not overwrite
          expect { result = authenticator.after_authenticate(hash) }.not_to change {
            user.user_profile.reload
            user.user_profile[profile_key]
          }

          # Value supplied, still do not overwrite
          expect {
            result =
              authenticator.after_authenticate(
                hash.deep_merge(info: { auth_hash_key => "New Value" }),
              )
          }.not_to change {
            user.user_profile.reload
            user.user_profile[profile_key]
          }

          # User has not set a value, so overwrite
          user.user_profile.update(profile_key => "")
          authenticator.after_authenticate(hash.deep_merge(info: { auth_hash_key => "New Value" }))
          user.user_profile.reload
          expect(user.user_profile[profile_key]).to eq("New Value")
        end
      end
    end

    describe "avatar on create" do
      fab!(:user) { Fabricate(:user) }
      let!(:association) do
        UserAssociatedAccount.create!(provider_name: "myauth", provider_uid: "1234")
      end

      it "doesn't schedule with no image" do
        expect {
          result =
            authenticator.after_create_account(user, create_auth_result(extra_data: create_hash))
        }.not_to change { Jobs::DownloadAvatarFromUrl.jobs.count }
      end

      it "schedules with image" do
        association.info["image"] = "https://some.domain/image.jpg"
        association.save!
        expect {
          result =
            authenticator.after_create_account(user, create_auth_result(extra_data: create_hash))
        }.to change { Jobs::DownloadAvatarFromUrl.jobs.count }.by(1)
      end
    end

    describe "profile on create" do
      fab!(:user) { Fabricate(:user) }
      let!(:association) do
        UserAssociatedAccount.create!(provider_name: "myauth", provider_uid: "1234")
      end

      it "doesn't explode without profile" do
        authenticator.after_create_account(user, create_auth_result(extra_data: create_hash))
      end

      it "works with profile" do
        association.info["location"] = "DiscourseVille"
        association.info["description"] = "Online forum expert"
        association.save!
        authenticator.after_create_account(user, create_auth_result(extra_data: create_hash))
        expect(user.user_profile.bio_raw).to eq("Online forum expert")
        expect(user.user_profile.location).to eq("DiscourseVille")
      end
    end

    describe "match by username" do
      let(:user_match_authenticator) do
        Class
          .new(described_class) do
            def name
              "myauth"
            end
            def match_by_email
              false
            end
            def match_by_username
              true
            end
          end
          .new
      end

      it "works normally" do
        SiteSetting.username_change_period = 0
        user = Fabricate(:user)
        result =
          user_match_authenticator.after_authenticate(
            hash.deep_merge(info: { nickname: user.username }),
          )
        expect(result.user.id).to eq(user.id)
        expect(
          UserAssociatedAccount.find_by(provider_name: "myauth", provider_uid: "1234").user_id,
        ).to eq(user.id)
      end

      it "works if there is already an association with the target account" do
        SiteSetting.username_change_period = 0
        user = Fabricate(:user, username: "IAmGroot")
        result = user_match_authenticator.after_authenticate(hash)
        expect(result.user.id).to eq(user.id)
      end

      it "works if the username is different case" do
        SiteSetting.username_change_period = 0
        user = Fabricate(:user, username: "IAMGROOT")
        result = user_match_authenticator.after_authenticate(hash)
        expect(result.user.id).to eq(user.id)
      end

      it 'does not match if username_change_period isn\'t 0' do
        SiteSetting.username_change_period = 3
        user = Fabricate(:user, username: "IAmGroot")
        result = user_match_authenticator.after_authenticate(hash)
        expect(result.user).to eq(nil)
      end

      it "does not match if default match_by_username not overriden" do
        SiteSetting.username_change_period = 0
        authenticator =
          Class
            .new(described_class) do
              def name
                "myauth"
              end
            end
            .new
        user = Fabricate(:user, username: "IAmGroot")
        result = authenticator.after_authenticate(hash)
        expect(result.user).to eq(nil)
      end

      it "does not match if match_by_username is false" do
        SiteSetting.username_change_period = 0
        authenticator =
          Class
            .new(described_class) do
              def name
                "myauth"
              end
              def match_by_username
                false
              end
            end
            .new
        user = Fabricate(:user, username: "IAmGroot")
        result = authenticator.after_authenticate(hash)
        expect(result.user).to eq(nil)
      end
    end
  end

  describe "description_for_user" do
    fab!(:user) { Fabricate(:user) }

    it "returns empty string if no entry for user" do
      expect(authenticator.description_for_user(user)).to eq("")
    end

    it "returns correct information" do
      association =
        UserAssociatedAccount.create!(
          user: user,
          provider_name: "myauth",
          provider_uid: "1234",
          info: {
            nickname: "somenickname",
            email: "test@domain.tld",
            name: "bestname",
          },
        )
      expect(authenticator.description_for_user(user)).to eq("test@domain.tld")
      association.update(info: { nickname: "somenickname", name: "bestname" })
      expect(authenticator.description_for_user(user)).to eq("somenickname")
      association.update(info: { nickname: "bestname" })
      expect(authenticator.description_for_user(user)).to eq("bestname")
      association.update(info: {})
      expect(authenticator.description_for_user(user)).to eq(
        I18n.t("associated_accounts.connected"),
      )
    end
  end

  describe "revoke" do
    fab!(:user) { Fabricate(:user) }

    it "raises exception if no entry for user" do
      expect { authenticator.revoke(user) }.to raise_error(Discourse::NotFound)
    end

    context "with valid record" do
      before do
        UserAssociatedAccount.create!(
          user: user,
          provider_name: "myauth",
          provider_uid: "1234",
          info: {
            name: "somename",
          },
        )
      end

      it "revokes correctly" do
        expect(authenticator.description_for_user(user)).to eq("somename")
        expect(authenticator.can_revoke?).to eq(true)
        expect(authenticator.revoke(user)).to eq(true)

        expect(authenticator.description_for_user(user)).to eq("")
      end
    end
  end
end