exec.rb

require "google-apis-calendar_v3"
require 'googleauth/stores/file_token_store'
require 'dotenv/load'

DB_PATH = "./db/"

@client = Google::Apis::CalendarV3::CalendarService.new
@authorizer = Google::Auth::UserAuthorizer.new(
    Google::Auth::ClientId.new(ENV['GOOGLE_CLIENT_ID'], ENV['GOOGLE_CLIENT_SECRET']), 
    Google::Apis::CalendarV3::AUTH_CALENDAR, 
    Google::Auth::Stores::FileTokenStore.new(file: ENV['TOKEN_STORE_PATH']), 
    ENV['GOOGLE_CALLBACK_URL']
)
@client.client_options.application_name = "Clockly"
@client.authorization = @authorizer.get_credentials(ENV['DEFAULT_USER'])

def updated(calendar_id_list, etag_list)
    calendar_id_list.each do |calendar_id|
        events = @client.list_events(calendar_id, single_events: true)
        puts events.etag
        return true if !etag_list.include?(events.etag)
    end
    return false
end

def get_events(calendar_id)
    min = DateTime.new(Date.today.year.to_i, 1, 1).to_s
    events = @client.list_events(calendar_id, single_events: true).items
    return events
end

def insert_event(events, calendar_id)
    return nil if !@config["writable_calendar_id"].include?(calendar_id)
    events = [events] if !events.instance_of?(Array)
    events.each do |event|
        google_event = Google::Apis::CalendarV3::Event.new({
            id: event.id,
            summary: event.summary,
            start: event.start,
            end: event.end,
            sequence: event.sequence
        })
        calendar_events = @client.list_events(calendar_id, single_events: true)
        event_id_list = calendar_events.items.map{|e| e.id}
        if event_id_list.include?(google_event.id)
            @client.update_event(calendar_id, google_event.id, google_event)
            STDERR.puts "Update #{event.summary} to #{calendar_id}"
        else
            @client.insert_event(calendar_id, google_event)
            STDERR.puts "Insert #{event.summary} to #{calendar_id}"
        end
    end
end

settings_file_path = "settings.yml"
@config = YAML.load_file(settings_file_path) if File.exist?(settings_file_path)
programs = JSON.parse(File.read(DB_PATH + "program-repository.json"))
etag_list = ARGV

programs.each do |program|
    if program['enable_auto'] == "true"
        code = program['rbcode']
        if updated(program['calendar_id_list'], etag_list)
            eval(code)
        end
    end
end