# frozen_string_literal: true

require "email"

RSpec.describe Email do
  describe "is_valid?" do
    it "treats a nil as invalid" do
      expect(Email.is_valid?(nil)).to eq(false)
    end

    it "treats a good email as valid" do
      expect(Email.is_valid?("sam@sam.com")).to eq(true)
    end

    it "treats a bad email as invalid" do
      expect(Email.is_valid?("sam@sam")).to eq(false)
    end

    it "allows museum tld" do
      expect(Email.is_valid?("sam@nic.museum")).to eq(true)
    end

    it "does not think a word is an email" do
      expect(Email.is_valid?("sam")).to eq(false)
    end
  end

  describe "downcase" do
    it "downcases local and host part" do
      expect(Email.downcase("SAM@GMAIL.COM")).to eq("sam@gmail.com")
      expect(Email.downcase("sam@GMAIL.COM")).to eq("sam@gmail.com")
    end

    it "leaves invalid emails untouched" do
      expect(Email.downcase("SAM@GMAILCOM")).to eq("SAM@GMAILCOM")
      expect(Email.downcase("samGMAIL.COM")).to eq("samGMAIL.COM")
      expect(Email.downcase("sam@GM@AIL.COM")).to eq("sam@GM@AIL.COM")
    end
  end

  describe "obfuscate" do
    it "correctly obfuscates emails" do
      expect(Email.obfuscate("a@b.com")).to eq("*@*.com")
      expect(Email.obfuscate("test@test.co.uk")).to eq("t***@t***.**.uk")
      expect(Email.obfuscate("simple@example.com")).to eq("s****e@e*****e.com")
      expect(Email.obfuscate("very.common@example.com")).to eq("v*********n@e*****e.com")
      expect(Email.obfuscate("disposable.style.email.with+symbol@example.com")).to eq(
        "d********************************l@e*****e.com",
      )
      expect(Email.obfuscate("other.email-with-hyphen@example.com")).to eq(
        "o*********************n@e*****e.com",
      )
      expect(Email.obfuscate("fully-qualified-domain@example.com")).to eq(
        "f********************n@e*****e.com",
      )
      expect(Email.obfuscate("user.name+tag+sorting@example.com")).to eq(
        "u*******************g@e*****e.com",
      )
      expect(Email.obfuscate("x@example.com")).to eq("*@e*****e.com")
      expect(Email.obfuscate("example-indeed@strange-example.com")).to eq(
        "e************d@s*************e.com",
      )
      expect(Email.obfuscate("example@s.example")).to eq("e*****e@*.example")
      expect(Email.obfuscate("mailhost!username@example.org")).to eq(
        "m***************e@e*****e.org",
      )
      expect(Email.obfuscate("user%example.com@example.org")).to eq("u**************m@e*****e.org")
      expect(Email.obfuscate("user-@example.org")).to eq("u***-@e*****e.org")
    end
  end
end