Merge branch 'Upload-to-IPFS' into 'master'

Adding EHR content IPFS completed

See merge request !16

ExpressBackend/.env

@@ -4,4 +4,10 @@ DATABASE_URL="mongodb+srv://dbUser:1997Ishini%21@cluster0.lmazo.mongodb.net/rese
 SERVER_PORT=4000
 STELLARPUBLICKEY="GB3U2F6MWAQ43O6J4AIUQXEMTK5XQZWURC3SF4D37DPBFRY4HCZGRBLG"
 STELLARSEED="SBUXCZ7F7G5Z3QK3NKM52UWVJWFSLEVVGQOCIEWEJY4DOYMYVOMUTS4B"
-AESKEY="QfTjWnZr4u7x!A%D"
\ No newline at end of file
+AESKEY="QfTjWnZr4u7x!A%D"
+IPFSPROJECTID="2KmA9x9x9odbbz9uA00GD5ZKOnv"
+IPFSAPIKEY="975ea3b06bd36d434b57a315a86287ee"
+IPFSHOST="ipfs.infura.io"
+IPFSPORT=5001
+IPFSPROTOCOL="https"
+IPFSURL="https://ipfs.io/ipfs/"
\ No newline at end of file

ExpressBackend/.vscode/settings.json

+{
+  "cSpell.words": ["ipfs"]
+}

ExpressBackend/package.json

@@ -18,8 +18,11 @@
     "cors": "^2.8.5",
     "crypto-js": "^4.1.1",
     "express": "^4.18.2",
+    "html-to-image": "^1.11.4",
+    "ipfs-infura": "^1.1.9",
     "mongoose": "^6.8.0",
     "node-htmlpdf": "^1.0.4",
+    "request": "^2.88.2",
     "stellar-sdk": "^10.4.1"
   },
   "devDependencies": {
@@ -27,6 +30,7 @@
     "@types/crypto-js": "^4.1.1",
     "@types/express": "^4.17.15",
     "@types/nodemon": "^1.19.2",
+    "@types/request": "^2.48.8",
     "dotenv": "^16.0.3",
     "nodemon": "^2.0.20"
   }

ExpressBackend/route/patient-routes/nft-route.js

@@ -6,6 +6,9 @@ const Patient = require("./../../model/patient/patient");
 const axios = require("axios");
 const StellarSDK = require("stellar-sdk");
 const htmlpdf = require("node-htmlpdf");
+const IPFS = require("ipfs-infura");
+const fs = require("fs");
+const request = require("request");
 let currentHash;
 let genesisHash;
 let isGenesisPassed;
@@ -259,25 +262,69 @@ router.post("/", async (req, res) => {
         htmlString = htmlString + `</body></html>`;
         console.log("HTML code for EHR generated");
 
-        //create the PDF document for EHR
-        let path = `./patientehr/` + decryptedPatientKey + `-EHR.pdf`;
-        let pdfOptions = {
-          path: path,
-          format: "A4",
-        };
-        htmlpdf
-          .create(htmlString, pdfOptions)
-          .then((buff) => {
-            console.log("PDF created");
+        //create the IPFS instance
+        const ipfs = new IPFS({
+          host: process.env.IPFSHOST,
+          port: process.env.IPFSPORT,
+          protocol: process.env.IPFSPROTOCOL,
+          projectId: process.env.IPFSPROJECTID,
+          projectSecret: process.env.IPFSAPIKEY,
+        });
+        //add the EHR content to IPFS and get the hash
+        ipfs
+          .add(htmlString)
+          .then((response) => {
+            let ipfsContentCID = response.toString();
+            //!Use this when getting EHR
+            // request.post(
+            //   {
+            //     url: "https://ipfs.infura.io:5001/api/v0/cat",
+            //     qs: {
+            //       arg: hash,
+            //     },
+            //     headers: {
+            //       Authorization:
+            //         "Basic " +
+            //         Buffer.from(
+            //           process.env.IPFSPROJECTID + ":" + process.env.IPFSAPIKEY
+            //         ).toString("base64"),
+            //     },
+            //   },
+            //   (error, response, body) => {
+            //     if (error) {
+            //       console.log(error);
+            //     } else {
+            //               //create the PDF document for EHR
+            // let path = `./patientehr/` + decryptedPatientKey + `-EHR.pdf`;
+            // let pdfOptions = {
+            //   path: path,
+            //   format: "A4",
+            // };
+            //       htmlpdf
+            //         .create(htmlString, pdfOptions)
+            //         .then((buff) => {
+            //           console.log("PDF created");
+            //         })
+            //         .catch((errorWhenGeneratingPDF) => {
+            //           console.log(
+            //             "Error when generating PDF : " + errorWhenGeneratingPDF
+            //           );
+            //           console.log(
+            //             "/patient/createnft - NFT creation and sharing failed"
+            //           );
+            //           return res.status(500).json({
+            //             message:
+            //               "Error when generating PDF : " +
+            //               errorWhenGeneratingPDF,
+            //           });
+            //         });
+            //     }
+            //   }
+            // );
+            //TODO: create NFT request
           })
-          .catch((errorWhenGeneratingPDF) => {
-            console.log(
-              "Error when generating PDF : " + errorWhenGeneratingPDF
-            );
-            console.log("/patient/createnft - NFT creation and sharing failed");
-            return res.status(500).json({
-              message: "Error when generating PDF : " + errorWhenGeneratingPDF,
-            });
+          .catch((errorWhenAddingToIPFS) => {
+            console.log(errorWhenAddingToIPFS);
           });
       }
     }