require 'rails_helper'
require 'json'

# This is ugly... but it works!
# Need to load plugin.rb to avoid:
#
# NameError:
#   uninitialized constant OAuth2BasicAuthenticator
#
# And need to mock various methods to avoid:
#
# NoMethodError:
#   undefined method `enabled_site_setting' for main:Object
#
# etc.

def enabled_site_setting(arg)
end

def auth_provider(arg)
end

def register_css(arg)
end

require_relative '../plugin.rb'

describe OAuth2BasicAuthenticator do
  context 'after_authenticate' do
    let(:user) { Fabricate(:user) }
    let(:authenticator) { OAuth2BasicAuthenticator.new('oauth2_basic') }

    let(:auth) do
      { 'credentials' => { 'token': 'token' },
        'info' => { id: 'id' },
        'extra' => {} }
    end

    before(:each) do
      SiteSetting.oauth2_email_verified = true
    end

    it 'finds user by email' do
      authenticator.expects(:fetch_user_details).returns(email: user.email)
      result = authenticator.after_authenticate(auth)
      expect(result.user).to eq(user)
    end

    context 'avatar downloading' do
      before { SiteSetting.queue_jobs = true }

      let(:job_klass) { Jobs::DownloadAvatarFromUrl }

      before do
        png = Base64.decode64("R0lGODlhAQABALMAAAAAAIAAAACAAICAAAAAgIAAgACAgMDAwICAgP8AAAD/AP//AAAA//8A/wD//wBiZCH5BAEAAA8ALAAAAAABAAEAAAQC8EUAOw==")
        stub_request(:get, "http://avatar.example.com/avatar.png").to_return(body: png, headers: { "Content-Type" => "image/png" })
      end

      it 'enqueues a download_avatar_from_url job' do
        authenticator.expects(:fetch_user_details).returns(
          email: user.email,
          avatar: 'http://avatar.example.com/avatar.png'
        )
        expect {
          authenticator.after_authenticate(auth)
        }.to change { job_klass.jobs.count }.by(1)

        job_args = job_klass.jobs.last['args'].first

        expect(job_args['url']).to eq("http://avatar.example.com/avatar.png")
        expect(job_args['user_id']).to eq(user.id)
        expect(job_args['override_gravatar']).to eq(false)
      end
    end
  end

  it 'can walk json' do
    authenticator = OAuth2BasicAuthenticator.new('oauth2_basic')
    json_string = '{"user":{"id":1234,"email":{"address":"test@example.com"}}}'
    SiteSetting.oauth2_json_email_path = 'user.email.address'
    result = authenticator.json_walk({}, JSON.parse(json_string), :email)

    expect(result).to eq "test@example.com"
  end

  it 'can walk json that contains an array' do
    authenticator = OAuth2BasicAuthenticator.new('oauth2_basic')
    json_string = '{"email":"test@example.com","identities":[{"user_id":"123456789","provider":"auth0","isSocial":false}]}'
    SiteSetting.oauth2_json_user_id_path = 'identities.[].user_id'
    result = authenticator.json_walk({}, JSON.parse(json_string), :user_id)

    expect(result).to eq "123456789"
  end

  it 'can walk json and handle an empty array' do
    authenticator = OAuth2BasicAuthenticator.new('oauth2_basic')
    json_string = '{"email":"test@example.com","identities":[]}'
    SiteSetting.oauth2_json_user_id_path = 'identities.[].user_id'
    result = authenticator.json_walk({}, JSON.parse(json_string), :user_id)

    expect(result).to eq nil
  end

  it 'can walk json and download avatar' do
    authenticator = OAuth2BasicAuthenticator.new('oauth2_basic')
    json_string = '{"user":{"avatar":"http://example.com/1.png"}}'
    SiteSetting.oauth2_json_avatar_path = 'user.avatar'
    result = authenticator.json_walk({}, JSON.parse(json_string), :avatar)

    expect(result).to eq 'http://example.com/1.png'
  end
end