require 'json'

module GDSZendesk
  module TestHelpers
    def zendesk_has_no_user_with_email(email)
      stub_request(:get, "#{zendesk_endpoint}/users/search?query=#{email}").
        to_return(body: {users: [], previous_page: nil, next_page: nil, count: 0}.to_json,
                  headers: {'Content-Type' => 'application/json'})
    end

    def zendesk_has_user(user_details)
      stub_request(:get, "#{zendesk_endpoint}/users/search?query=#{user_details[:email]}").
        to_return(body: {users: [user_details], previous_page: nil, next_page: nil, count: 1}.to_json,
                  headers: {'Content-Type' => 'application/json'})
    end

    def stub_zendesk_user_creation(user_properties = nil)
      stub = stub_http_request(:post, "#{zendesk_endpoint}/users")
      stub.with(body: {user: user_properties}) unless user_properties.nil?
      stub.to_return(status: 201, body: { user: { id: 12345, name: "abc" }}.to_json,
                     headers: {'Content-Type' => 'application/json'})
    end

    def stub_zendesk_ticket_creation(ticket_properties = nil)
      stub = stub_http_request(:post, "#{zendesk_endpoint}/tickets")
      stub.with(body: {ticket: ticket_properties}) unless ticket_properties.nil?
      stub.to_return(status: 201, body: { ticket: { id: 12345 }}.to_json,
                     headers: {'Content-Type' => 'application/json'})
    end

    def stub_zendesk_ticket_creation_with_body(body)
      stub_http_request(:post, "#{zendesk_endpoint}/tickets").
        with(body: body).
        to_return(status: 201, body: { ticket: { id: 12345 }}.to_json,
                  headers: {'Content-Type' => 'application/json'})
    end

    def stub_zendesk_user_update(user_id, user_properties)
      stub_http_request(:put, "#{zendesk_endpoint}/users/#{user_id}").
        with(body: {user: user_properties}).
        to_return(status: 201, body: { user: { id: 12345, name: "abc" }}.to_json,
                  headers: {'Content-Type' => 'application/json'})
    end

    def zendesk_is_unavailable
      stub_request(:any, /#{zendesk_endpoint}\/.*/).to_return(status: 503)
    end

    def zendesk_returns_conflict
      stub_request(:any, /#{zendesk_endpoint}\/.*/).to_return(status: 409)
    end

    def zendesk_returns_redirect
      stub_request(:any, /#{zendesk_endpoint}\/.*/).to_return(status: 302)
    end

    def zendesk_endpoint
      "https://#{valid_zendesk_credentials["username"]}:#{valid_zendesk_credentials["password"]}@govuk.zendesk.com/api/v2"
    end

    def valid_zendesk_credentials=(credentials)
      @zendesk_credentials = credentials
    end

    def valid_zendesk_credentials
      @zendesk_credentials || { "username" => "abc", "password" => "def" }
    end

    def assert_created_ticket_has(ticket_options)
      assert_requested :post, %r{/api/v2/tickets},
        body: { ticket: hash_including(ticket_options) }, times: 1
    end

    def assert_created_ticket_has_requester(requester_options)
      assert_requested :post, %r{/api/v2/tickets},
        body: { ticket: hash_including(requester: hash_including(requester_options)) }, times: 1
    end
  end
end