analytics.coffee

SERVICE_ACCOUNT_EMAIL = '<service_account_email>'
SERVICE_ACCOUNT_KEY_FILE = __dirname + '/googleapi-privatekey.pem'

google = require 'googleapis'
moment = require 'moment'

year=2015
month=3 # 月は0始まり (3=4月)

m = moment {'year': year, 'month': month}

jwt = new google.auth.JWT SERVICE_ACCOUNT_EMAIL,
		SERVICE_ACCOUNT_KEY_FILE,
        null,
        ['https://www.googleapis.com/auth/analytics.readonly']


jwt.authorize (err, result) ->
	if err
		console.error err
		process.exit()

	analytics = google.analytics 'v3'
	analytics.data.ga.get {
		'ids': 'ga:<ViewID>',
		'start-date': m.format('YYYY-MM-DD'),
		'end-date': m.endOf('month').format('YYYY-MM-DD'),
		'metrics': 'ga:visitors',
		'auth': jwt
	}, (err, resp) ->
		if err
			console.error err
			process.exit()

		console.log "Visitors: " + resp.totalsForAllResults['ga:visitors']