Merge pull request #152 from khrystynaklochko/main

Gift card generation app POC

Author: klembee

7-defi-devpost/coupon/.gitignore

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+/target

7-defi-devpost/coupon/Cargo.toml

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+[package]
+name = "coupon"
+version = "0.1.0"
+edition = "2021"
+
+[dependencies]
+sbor = { git = "https://github.com/radixdlt/radixdlt-scrypto", tag = "v0.8.0" }
+scrypto = { git = "https://github.com/radixdlt/radixdlt-scrypto", tag = "v0.8.0" }
+
+[dev-dependencies]
+transaction = { git = "https://github.com/radixdlt/radixdlt-scrypto", tag = "v0.8.0" }
+radix-engine = { git = "https://github.com/radixdlt/radixdlt-scrypto", tag = "v0.8.0" }
+scrypto-unit = { git = "https://github.com/radixdlt/radixdlt-scrypto", tag = "v0.8.0" }
+
+[profile.release]
+opt-level = 's'        # Optimize for size.
+lto = true             # Enable Link Time Optimization.
+codegen-units = 1      # Reduce number of codegen units to increase optimizations.
+panic = 'abort'        # Abort on panic.
+strip = "debuginfo"    # Strip debug info.
+overflow-checks = true # Panic in the case of an overflow.
+
+[lib]
+crate-type = ["cdylib", "lib"]
+
+[workspace]
+# Set the package crate as its own empty workspace, to hide it from any potential ancestor workspace
+# Remove this [workspace] section if you intend the package to be part of a Cargo workspace

7-defi-devpost/coupon/README.md

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+## Coupon javascript app POC
+This is a blueprint application POC for potential use of Wallet SDK to create cupons for integration with e-commerce.
+I had troubles with registering an app and using npm package and happy to create js package if an idea kicks in!
+
+For time being use js sample server to check a concept.
+ - UI app is under  `coupon-ui ` folder.
+ - Server app is under  `coupon-js ` folder.
+ Instructions are inside README of each folder.

7-defi-devpost/coupon/coupon-js-server/README.md

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+## POC server app for generating gift code coupons
+This app is generating encrypted gift code based on user id, amount and address to send to.
+Codes are encrypted with btoa and this can be later improved for a security reasons.
+Generated reference code can be shared and later executed as a payment transaction with Radix network and transaction will require further approvement.
+
+### Start a server
+
+Vanilla Node.js app
+
+```npm install```
+
+```node server```
+
+
+### API endpoint
+```POST /giftcode```
+
+```json body: { "giftcode" : { "amount" : "40", id: "id", "to_address": "to_address" } }```
+
+#### Expectations
+
+if you trigger a request from your local:\
+\
+```http://127.0.0.1:3002/giftcode```\
+with a body:\
+```{ "giftcode" : { "amount" : "40", "id": "id", "to_address": "to_address" } }```\
+you should expect a response with a payment link inside:\
+\
+[
+    {
+        "message": "Successfully generated a code from URL",
+        "giftcode": "dG9fYWRkcmVzczQwaWQ="
+    }
+]
+
+### API endpoint
+ POC concept which will require further development for security and integration reasons.
+
+```POST /redeemcode```
+
+```json body: { "redeemcode" : { "giftcode" : "dG9fYWRkcmVzczQwaWQ=" } }```
+
+#### Expectations
+
+if you trigger a request from your local:\
+\
+```http://127.0.0.1:3002/redeem/code```\
+with a body:\
+```{ "redeemcode" : { "giftcode" : "dG9fYWRkcmVzczQwaWQ=" } }```\
+you should expect a response with a payment link inside:\
+\
+[
+    {
+        "message": "Successfully decoded payment details",
+        "paymentDetails" : { "amount" : "40", "id": "id", "to_address": "to_address" }
+    }
+]

7-defi-devpost/coupon/coupon-js-server/coupon-controller.js

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+const giftCardObject = require('./couponUtil.js');
+
+//Method to return giftcode
+exports.generate= function(req, res) {
+    let body = '';
+
+    req.on('data',  function (chunk) {
+      body += chunk.toString();
+    });
+ 
+    req.on('end', function () {
+        console.log(body);
+        let amount = JSON.parse(body).giftcode.amount
+        let id = JSON.parse(body).giftcode.id
+        let to_address = JSON.parse(body).giftcode.to_address
+
+        console.log('Amount', amount);
+        console.log('Id', id);
+        console.log('To address', to_address);
+
+        res.statusCode = 201;
+        res.setHeader('content-Type', 'Application/json');
+        giftCardObject.generate(to_address, id, amount).then((giftcode) => {
+            console.log(giftcode);
+            let response = 
+                {   "status": 200,
+                    "message": "Successfully generated a code from URL",
+                    "giftcode": giftcode
+                }
+            res.end(JSON.stringify(response));
+        });        
+
+    });
+    
+}
+
+// Method to decode coupon
+exports.decode= function(req, res) {
+    let body = '';
+
+    req.on('data',  function (chunk) {
+      body += chunk.toString();
+    });
+ 
+    req.on('end', function () {
+        console.log(body);
+        let giftcode = JSON.parse(body).redeemcode.giftcode
+
+        console.log('Gift Code', giftcode);
+
+        res.statusCode = 201;
+        res.setHeader('content-Type', 'Application/json');
+        giftCardObject.decode(giftcode).then((decodeResponse) => {
+            console.log(giftcode);
+            let response = 
+                {   "status": 200,
+                    "message": "Successfully decoded payment details",
+                    "paymentDetails": decodeResponse
+                }
+            res.end(JSON.stringify(response))
+        });        
+
+    });
+    
+}
+
+// Method to catch wrong requests 
+exports.invalid = function(req, res) {
+    var response = [
+      {
+      "message": "Gift code can not be generated"
+      },
+      availableEndpoints
+    ]
+    res.statusCode = 404;
+    res.setHeader('content-Type', 'Application/json');
+    res.end(JSON.stringify(response))
+}
+
+  

7-defi-devpost/coupon/coupon-js-server/couponUtil.js

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+module.exports = {
+
+    generate: function(to_address, id, amount) {
+        return new Promise(function (resolve) {
+            let reference = btoa(to_address+"$"+amount+"$"+id);
+            resolve(reference);
+        }).catch(err => {
+            console.log('Error: ', err.message);
+            reject();
+        });;
+    },
+
+    decode: function(giftcode) {
+        return new Promise(function (resolve) {
+            let reference = atob(giftcode);
+            console.log('Reference', reference)
+            let array = reference.split(/(\d+)/)
+            let response = [
+                {   "to_address": array[0],
+                    "amount": array[1],
+                    "id": array[2]
+                },              
+            ]
+            resolve(response);
+        }).catch(err => {
+            console.log('Error: ', err.message);
+            reject();
+        });;
+    },
+}
+