vPOS Ruby

This ruby library helps you easily interact with the vPOS API, Allowing merchants apps/services to request a payment from a client through his/her mobile phone number.

The service currently works for solutions listed below:

• EMIS GPO (Multicaixa Express)

Want to know more about how we are empowering merchants in Angola? See our website

Features

• Simple interface
• Uniform plain old objects are returned by all official libraries, so you don't have to serialize/deserialize the JSON returned by our API.

Documentation

Does interacting directly with our API service sound better to you? See our documentation on developer.vpos.ao

Installation

gem 'vpos', '~> 2.0.0'

or

gem install vpos

Configuration

This ruby library requires you to have:

• POS_ID provided by EMIS that can be requested through your support bank.
• Supervisor Card provided by EMIS that can be requested through your support bank.
• Token provided by vPOS that can be generated through vPOS merchant portal.
• Ruby 2.6 or higher

Don't have this information? Talk to us

Given you have all the requirements above, you will now be able to authenticate and communicate effectively with our API using this library.

The next section will show the various actions that can be performed by you, the merchant.

Use

Create Instance

require 'vpos'

# use the default environment variables option
vpos = Vpos.new

# or use optional arguments option
vpos = Vpos.new(token: 'your_token_here')

Environment variables

Variable	Description	Required
GPO_POS_ID	The Point of Sale ID provided by EMIS	true
MERCHANT_VPOS_TOKEN	The API token provided by vPOS	true
PAYMENT_CALLBACK_URL	The URL that will handle payment notifications	false
REFUND_CALLBACK_URL	The URL that will handle refund notifications	false

or using one of the optional arguments

Optional Arguments

Argument	Description	Type
token	Token generated at vPOS dashboard	string
pos_id	Merchant POS ID provided by EMIS	string
payment_callback_url	Merchant application JSON endpoint to accept the callback payment response	string
refund_callback_url	Merchant application JSON endpoint to accept the callback refund response	string

Get a specific Transaction

Retrieves a transaction given a valid transaction ID:

# Using a env variable token MERCHANT_VPOS_TOKEN
transaction = vpos.get_transaction(transaction_id: '1jHbXEbRTIbbwaoJ6w06nLcRG7X')
# Or using a explicitly stated token
transaction = vpos.get_transaction(transaction_id: '1jHbXEbRTIbbwaoJ6w06nLcRG7X', token: 'EbRTIbb1jHbXEbRTIbbwaoJ6w06nLcRG7X')
# {
#   :status_code=>200,
#   :message=>"OK",
#   :data=> {
#      :amount=>"1.23",
#      :clearing_period=>156,
#      :id=>"29fTRtkFaf8cQklRuHTvGDaecj4",
#      :mobile=>"900000000",
#      :parent_transaction_id=>nil,
#      :pos_id=>111,
#      :status=>"accepted",
#      :status_datetime=>"2022-05-25T18:25:39Z",
#      :status_reason=>nil,
#      :type=>"payment"
#    }
# }

Argument	Description	Type	Required
transaction_id	An existing Transaction ID	string	Yes
token	Merchant token generated at vPOS merchant portal	string	No (if set as env variable)

New Payment Transaction

Creates a new payment transaction given a valid mobile number associated with a MULTICAIXA account and a valid amount:

# Using a env variable token MERCHANT_VPOS_TOKEN
request = vpos.new_payment(customer: '900111222', amount: '123.45')
# Or using a explicitly stated token
request = vpos.new_payment(customer: '900111222', amount: '123.45', token: 'EbRTIbb1jHbXEbRTIbbwaoJ6w06nLcRG7X')
# {:status_code=>202, :message=>"ACCEPTED", :location=>"/api/v1/requests/29fTRtkFaf8cQklRuHTvGDaecj4"}

request_id = vpos.get_request_id(request)
# "29fTRtkFaf8cQklRuHTvGDaecj4"

transaction = vpos.get_transaction(transaction_id: "29fTRtkFaf8cQklRuHTvGDaecj4")
# {
#   :status_code=>200,
#   :message=>"OK",
#   :data=> {
#      :amount=>"1.23",
#      :clearing_period=>156,
#      :id=>"29fTRtkFaf8cQklRuHTvGDaecj4",
#      :mobile=>"900000000",
#      :parent_transaction_id=>nil,
#      :pos_id=>111,
#      :status=>"accepted",
#      :status_datetime=>"2022-05-25T18:25:39Z",
#      :status_reason=>nil,
#      :type=>"payment"
#    }
# }

Argument	Description	Type	Required
customer	The mobile number of the client who will pay	string	Yes
amount	The amount the client should pay, eg. "259.99", "259000.00"	string	Yes
token	Merchant token generated at vPOS merchant portal	string	No (if set as env variable)
callback_url	A valid https url where vPOS is going to callback as soon he finishes to process	string	No

Request Refund

Given an existing parent_transaction_id, request a refund using a env variable token.

# Using a env variable token MERCHANT_VPOS_TOKEN
request = vpos.new_refund(parent_transaction_id: '29fTRtkFaf8cQklRuHTvGDaecj4')
# Or using a explicitly stated token
request = vpos.new_refund(parent_transaction_id: '29fTRtkFaf8cQklRuHTvGDaecj4', token: 'EbRTIbb1jHbXEbRTIbbwaoJ6w06nLcRG7X')
# {:status_code=>202, :message=>"ACCEPTED", :location=>"/api/v1/requests/29fTRtkFaf8cQklRuHTvGDaecj3"}

request_id = vpos.get_request_id(request)
# "29fTRtkFaf8cQklRuHTvGDaecj3"

transaction = vpos.get_transaction(transaction_id: "29fTRtkFaf8cQklRuHTvGDaecj3")
# {
#   :status_code=>200,
#   :message=>"OK",
#   :data=> {
#      :amount=>"1.23",
#      :clearing_period=>156,
#      :id=>"29fTRtkFaf8cQklRuHTvGDaecj3",
#      :mobile=>nil,
#      :parent_transaction_id=>29fTRtkFaf8cQklRuHTvGDaecj4,
#      :pos_id=>nil,
#      :status=>"accepted",
#      :status_datetime=>"2022-05-25T18:25:39Z",
#      :status_reason=>nil,
#      :type=>"refund"
#    }
# }

Argument	Description	Type	Required
parent_transaction_id	The ID of transaction you wish to refund	string
token	Merchant token generated at vPOS merchant portal	string	No (if set as env variable)
callback_url	A valid https url where vPOS is going to callback as soon he finishes to process	string	No

Poll Transaction Status

Poll the status of a transaction given a valid request_id

Note: The request_id in this context is essentially the transaction_id of an existing request.

# Using a env variable token
request = vpos.get_request(request_id: '29fTRtkFaf8cQklRuHTvGDaecj5')
# Or using a explicitly stated token
request = vpos.get_request(request_id: '29fTRtkFaf8cQklRuHTvGDaecj5', token: 'EbRTIbb1jHbXEbRTIbbwaoJ6w06nLcRG7X')
# {:status_code=>303, :message=>"ACCEPTED", :location=>"/api/v1/transactions/29fTRtkFaf8cQklRuHTvGDaecj5"}

request_id = vpos.get_request_id(request)
# "29fTRtkFaf8cQklRuHTvGDaecj5"

transaction = vpos.get_transaction(transaction_id: "29fTRtkFaf8cQklRuHTvGDaecj5")
# {
#   :status_code=>200,
#   :message=>"OK",
#   :data=> {
#      :amount=>"1.23",
#      :clearing_period=>156,
#      :id=>"29fTRtkFaf8cQklRuHTvGDaecj5",
#      :mobile=>nil,
#      :parent_transaction_id=>29fTRtkFaf8cQklRuHTvGDaecj4,
#      :pos_id=>nil,
#      :status=>"accepted",
#      :status_datetime=>"2022-05-25T18:25:39Z",
#      :status_reason=>nil,
#      :type=>"refund"
#    }
# }

Argument	Description	Type	Required?
request_id	The ID of transaction you wish to poll	string	Yes
token	Merchant token generated at vPOS merchant portal	string	No (if set as env variable)

Have any doubts?

In case of any doubts, bugs, or the like, please leave an issue. We would love to help.

License

The library is available as open source under the terms of the MIT License.