Forked from LeCoupa/1-meteor-paypal-api-rest-server-file.coffee
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March 18, 2016 07:12
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Meteor Paypal REST API. More: http://journal.gentlenode.com/meteor-8-create-and-execute-a-payment-with-paypal-rest-api/
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| ### | |
| This gist illustrates how to create and execute a payment with Paypal using their REST API. | |
| If you need something more, check the documentation: https://developer.paypal.com/docs/api/ | |
| Note 1: I assume that you have already created a developer account for Paypal and an application. | |
| To test that your code is working, use the sandbox accounts. | |
| https://developer.paypal.com/webapps/developer/applications/accounts | |
| Note 2: we will not use the Paypal REST API SDK package for Node.js | |
| https://github.com/paypal/rest-api-sdk-nodejs | |
| ### | |
| # 1. Create your paypal configuration object. | |
| @paypalConf = | |
| host: "api.sandbox.paypal.com" | |
| clientId: "pHQcZ1cH0lnX5Mub4MGzo_-FH6witB3_2zuRYgvUFxMHFH6wiAe3zCRDqatu3" | |
| clientSecret:"Xk7-EDJqERAU5up6wjeVoRE6WM2OoIsUT3ouxVRKUmjX38b4k0-q6t_UHei" | |
| # 2. Create two collections to save our payments and the Paypal tokens. | |
| @PaypalPayments = new Meteor.Collection 'paypal_payments' | |
| @PaypalTokens = new Meteor.Collection 'paypal_tokens' | |
| # 3. Create the three methods to: | |
| # - Get a valid token to make API calls. (retrieve a new one if invalid) | |
| # - Create a payment | |
| # - Execute a payment. | |
| Meteor.methods | |
| 'getPaypalToken': -> | |
| isTokenValid = 0 | |
| token = PaypalTokens.findOne({ timestamp: { $exists: true } }, | |
| { sort: { timestamp: -1 } }) | |
| if token? | |
| isTokenValid = Math.ceil((new Date().getTime() - token.timestamp) / 1000) | |
| # is the token invalid? | |
| if isTokenValid is 0 or isTokenValid > token.expires_in | |
| auth = paypalConf['clientId'] + ':' + | |
| paypalConf['clientSecret'] | |
| token = EJSON.parse( | |
| Meteor.http.post('https://api.sandbox.paypal.com/v1/oauth2/token', | |
| headers: | |
| 'Accept': 'application/json' | |
| 'Accept-Language': 'en_US' | |
| auth: auth | |
| params: | |
| 'grant_type': 'client_credentials' | |
| ).content) | |
| token['timestamp'] = new Date().getTime() | |
| # we insert the new valid token to retrieve it later | |
| PaypalTokens.insert token | |
| return token | |
| 'createPaypalPayment': (product) -> | |
| token = Meteor.call 'getPaypalToken' | |
| payment = | |
| intent: 'sale' | |
| payer: | |
| payment_method: 'paypal' | |
| redirect_urls: | |
| return_url: 'http://localhost:3000/dashboard/payment/paypal/execute' | |
| cancel_url: 'http://localhost:3000/dashboard' | |
| transactions: [ | |
| item_list: | |
| 'items': [ | |
| 'name': product.name, | |
| 'price': product.price, | |
| 'currency': 'USD', | |
| 'quantity': 1 | |
| ] | |
| amount: | |
| total: product.price | |
| currency: 'USD' | |
| description: product.description | |
| ] | |
| res = Meteor.http.post 'https://api.sandbox.paypal.com/v1/payments/payment', | |
| headers: | |
| Authorization: 'Bearer ' + token.access_token | |
| 'Content-Type': 'application/json' | |
| data: payment | |
| res.data['userId'] = @userId | |
| # we insert the payment details (for the payment id during execution) | |
| PaypalPayments.insert res.data | |
| return res.data | |
| 'executePaypalPayment': (payerId) -> | |
| payment = PaypalPayments.findOne({ userId: @userId }, | |
| { sort: { 'create_time': -1 } }) | |
| token = Meteor.call 'getPaypalToken' | |
| url = 'https://api.sandbox.paypal.com/v1/payments/payment/' + | |
| payment.id + '/execute' | |
| res = Meteor.http.post url, | |
| headers: | |
| Authorization: 'Bearer ' + token.access_token | |
| 'Content-Type': 'application/json' | |
| data: | |
| payer_id: payerId | |
| payment = res.data | |
| payment['userId'] = @userId | |
| if payment.state is 'approved' | |
| # we insert the sucessful payment here | |
| PaypalPayments.insert payment | |
| return if payment.state is 'approved' then true else false | |
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