require_relative '../.env'
ENV["DB_NAME"] = "test_#{ENV["DB_NAME"]}"
require_relative '../app'
require 'rubygems'
require 'roda'
require 'sequel'
require 'rspec'
require 'rack/test'

# DB initialization
Sequel.extension :migration
Sequel.sqlite("db/#{ENV['DB_NAME']}") do |db|
  Sequel::Migrator.apply(db, "db/migrations")
end

def app
  App
end

describe "Submit API request to create new link" do
  include Rack::Test::Methods
  before :each do
    @links = Sequel.sqlite("db/#{ENV['DB_NAME']}")[:links]
  end
  after :each do
    @links.delete
  end
  it "should return link data in json format when a valid url is submitted" do
    data = {
      url: 'http://google.com'
    }
    post('/links', data.to_json, "CONTENT_TYPE" => "application/json")
    expect(last_response).to be_ok
    response_json = JSON.parse(last_response.body)
    expect(response_json['url']).to eq(data[:url])
    expect(response_json['code']).not_to eq(nil)
    expect(response_json['link']).to include(response_json['code'])
  end
  
  it "should return with a 400 status and 'invalid url parameter' message when an empty url is submitted" do
    data = {
      url: ''
    }
    post('/links', data.to_json, "CONTENT_TYPE" => "application/json")
    expect(last_response.status).to eq(400)
    response_json = JSON.parse(last_response.body)
    expect(response_json['message']).to eq('invalid url parameter')
  end

  it "should return with a 400 status and 'missing url parameter' message when an empty url is submitted" do
    data = {
    }
    post('/links', data.to_json, "CONTENT_TYPE" => "application/json")
    expect(last_response.status).to eq(400)
    response_json = JSON.parse(last_response.body)
    expect(response_json['message']).to eq('missing url parameter')
  end

  it "should return with a 400 status and 'invalid url parameter' message when an invalid url is submitted" do
    data = {
      url: 'not-an-url'
    }
    post('/links', data.to_json, "CONTENT_TYPE" => "application/json")
    expect(last_response.status).to eq(400)
    response_json = JSON.parse(last_response.body)
    expect(response_json['message']).to eq('invalid url parameter')
  end

  it "should return with a 400 status and 'url not found' message when a 404 url is submitted" do
    data = {
      url: 'http://google.com/example'
    }
    post('/links', data.to_json, "CONTENT_TYPE" => "application/json")
    expect(last_response.status).to eq(400)
    response_json = JSON.parse(last_response.body)
    expect(response_json['message']).to eq('url not found')
  end

  it "should return with a 400 status and 'url not found' message when a URL with no DNS is submitted" do
    data = {
      url: 'http://bad.tld'
    }
    post('/links', data.to_json, "CONTENT_TYPE" => "application/json")
    expect(last_response.status).to eq(400)
    response_json = JSON.parse(last_response.body)
    expect(response_json['message']).to eq('url does not resolve')
  end
end