require 'rails_helper'

RSpec.describe RsAuthorizationCode, type: :model do
  let(:user) { create :user }

  def build_code(**attrs)
    RsAuthorizationCode.create!(
      user: user,
      client_id: "example.com",
      redirect_uri: "https://example.com",
      permissions: %w(documents:rw),
      code_challenge: "challenge",
      **attrs
    )
  end

  describe "#create" do
    it "generates a raw code and stores only its digest" do
      code = build_code

      expect(code.code).to be_present
      expect(code.code_digest).to eq(Digest::SHA256.hexdigest(code.code))
    end

    it "sets a short expiry" do
      code = build_code

      expect(code.expires_at).to be_within(5.seconds).of(60.seconds.from_now)
    end
  end

  describe ".find_by_code" do
    it "finds a code by its raw value" do
      code = build_code

      expect(RsAuthorizationCode.find_by_code(code.code)).to eq(code)
    end

    it "returns nil for an unknown code" do
      expect(RsAuthorizationCode.find_by_code("does-not-exist")).to be_nil
    end

    it "returns nil for a blank code" do
      expect(RsAuthorizationCode.find_by_code(nil)).to be_nil
    end

    it "returns nil for an expired code" do
      code = build_code(expires_at: 1.minute.ago)
      expect(RsAuthorizationCode.find_by_code(code.code)).to be_nil
    end
  end

  describe "#expired?" do
    it "is false before the expiry" do
      expect(build_code).not_to be_expired
    end

    it "is true after the expiry" do
      expect(build_code(expires_at: 1.minute.ago)).to be_expired
    end
  end
end