# frozen_string_literal: true

require "google/api_client/client_secrets"

module NeetoReposVerfier
  class ListVerfier

    NEETO_REPOS_SHEET_LINK = "https://docs.google.com/spreadsheets/d/1QaYz_s0j7wX8kmp8_JQPYXqFGs18helJRORS-8edsyQ/edit#gid=0"
    NEETO_REPOS_SHEET_QUERY = "https://sheets.googleapis.com/v4/spreadsheets/1QaYz_s0j7wX8kmp8_JQPYXqFGs18helJRORS-8edsyQ/values/products!B2:B?access_token="

    def process
      print_verifier_name
      valid? ? print_success_message : print_failure_message
    end

    private

      def local_list
        @_local_list ||= fetch_local_lists
      end

      def fetch_local_lists
        NeetoCompliance::NeetoRepos::products.keys +
        NeetoCompliance::NeetoRepos::nanos +
        NeetoCompliance::NeetoRepos::widgets +
        NeetoCompliance::NeetoRepos::chrome_extensions +
        NeetoCompliance::NeetoRepos::helper_packages +
        NeetoCompliance::NeetoRepos::electron_apps +
        NeetoCompliance::NeetoRepos::executables +
        NeetoCompliance::NeetoRepos::mobile_apps +
        NeetoCompliance::NeetoRepos::other_repos +
        NeetoCompliance::NeetoRepos::nanos_mono_repos
      end

      def actual_list
        @_actual_list ||= build_app_list
      end

      def fetch_actual_list
        uri = URI("#{NEETO_REPOS_SHEET_QUERY}#{access_token}")
        response = JSON.parse(Net::HTTP.get(uri))
        print_error_message(response["error"]["message"]) if response["error"]
        response["values"]
      end

      def build_app_list
        filter_and_clean_app_list(fetch_actual_list.flatten)
      end

      def filter_and_clean_app_list(apps)
        apps.filter { |app| !app.match?(/ |[A-Z]/) }
      end

      def valid?
        @unwanted_apps = local_list - actual_list
        @missing_apps = actual_list - local_list
        @unwanted_apps.size == 0 && @missing_apps.size == 0
      end

      def print_verifier_name
        print self.class.name
      end

      def print_success_message
        puts "[PASS]".green
      end

      def print_failure_message
        puts "[FAIL]".red
        puts "The Neeto repos list that is \"data/neeto_repos.json\" file must be in sync with #{NEETO_REPOS_SHEET_LINK}".yellow
        unless @unwanted_apps.nil? || @unwanted_apps.empty?
          puts "The following apps must be removed from the \"data/neeto_repos.json\" file: \n#{@unwanted_apps.to_s.red}\n"
        end
        unless @missing_apps.nil? || @missing_apps.empty?
          puts "The following apps must be added to the \"data/neeto_repos.json\" file: \n#{@missing_apps.to_s.green}"
        end
        exit(1)
      end

      def print_error_message(message)
        puts "[ERROR]".red
        puts message.red
        exit(1)
      end

      def access_token
        client_secrets = Google::APIClient::ClientSecrets.load("bin/neeto_repos_verifier/client_config.json")
        auth_client = client_secrets.to_authorization
        auth_client.fetch_access_token!
        auth_client.access_token
      end
  end
end