Class: Bianchi::USSD::Store

Inherits:
Object
  • Object
show all
Defined in:
lib/bianchi/ussd/store.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(session) ⇒ Store

Returns a new instance of Store.



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# File 'lib/bianchi/ussd/store.rb', line 8

def initialize(session)
  redis_url = ENV.fetch("REDIS_URL", nil)
  unless redis_url.present?
    raise ArgumentError,
          "environment variable REDIS_URL required to track engine session."
  end

  @redis = Redis.new(url: redis_url)
  @session = session
end

Instance Attribute Details

#session ⇒ Object (readonly)

Returns the value of attribute session.



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# File 'lib/bianchi/ussd/store.rb', line 6

def session
  @session
end

Instance Method Details

#all ⇒ Object 



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# File 'lib/bianchi/ussd/store.rb', line 45

def all
  parse_values @redis.hgetall("#{session.id}-#{session.mobile_number}-store")
end

#get(key) ⇒ Object 



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# File 'lib/bianchi/ussd/store.rb', line 41

def get(key)
  parse_value @redis.hget("#{session.id}-#{session.mobile_number}-store", key)
end

#parse_value(value) ⇒ Object 



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# File 'lib/bianchi/ussd/store.rb', line 57

def parse_value(value)
  JSON.parse(value)
rescue StandardError
  value
end

#parse_values(data) ⇒ Object 



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# File 'lib/bianchi/ussd/store.rb', line 53

def parse_values(data)
  data.transform_values { |v| parse_value v }
end

#previous_session ⇒ Object 



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# File 'lib/bianchi/ussd/store.rb', line 29

def previous_session
  previous_activity = @redis.hgetall("#{session.id}-#{session.mobile_number}-activity")
  return if previous_activity.empty?

  previous_activity_data = JSON.parse(previous_activity["data"]).with_indifferent_access

  menu = Menu.new(previous_activity_data[:menu])
  page_number = previous_activity_data[:page_number]
  params = previous_activity_data[:params]
  Session.new(params, menu, page_number)
end

#set(key, value) ⇒ Object 



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# File 'lib/bianchi/ussd/store.rb', line 49

def set(key, value)
  @redis.hset("#{session.id}-#{session.mobile_number}-store", { key => value.to_json })
end

#track_session ⇒ Object 



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# File 'lib/bianchi/ussd/store.rb', line 19

def track_session
  data = {
    params: session.params,
    menu: session.menu.name,
    page_number: session.page_number
  }.to_json

  @redis.hset("#{session.id}-#{session.mobile_number}-activity", data: data)
end