Added new contract templates (#31)

docker/code-templates/nodejs/npl-client/_projname_.js

@@ -0,0 +1,78 @@
+const readline = require('readline');
+const HotPocket = require('hotpocket-js-client');
+
+async function clientApp() {
+
+    const userKeyPair = await HotPocket.generateKeys();
+    const client = await HotPocket.createClient(['wss://localhost:8081'], userKeyPair);
+
+    // Establish HotPocket connection.
+    if (!await client.connect()) {
+        console.log('Connection failed.');
+        return;
+    }
+
+    console.log('HotPocket Connected.');
+
+    // start listening for stdin
+    const rl = readline.createInterface({
+        input: process.stdin,
+        output: process.stdout
+    });
+
+    // On ctrl + c we should close HP connection gracefully.
+    rl.on('SIGINT', () => {
+        console.log('SIGINT received...');
+        rl.close();
+        client.close();
+    });
+
+    // This will get fired if HP server disconnects unexpectedly.
+    client.on(HotPocket.events.disconnect, () => {
+        console.log('Disconnected');
+        rl.close();
+    });
+
+    // This will get fired when contract sends an output.
+    client.on(HotPocket.events.contractOutput, (r) => {
+        r.outputs.forEach(output => {
+            if (output.type == "rndResult") {
+                if (output.status == "ok")
+                    console.log(`(ledger:${r.ledgerSeqNo})>> ${JSON.stringify(output)}`);
+                else
+                    console.log(`(ledger:${r.ledgerSeqNo})>> Rnd failed. reason: ${output.error}`);
+            }
+            else {
+                console.log("Unknown contract output.");
+            }
+        });
+    });
+
+    console.log("Ready to accept inputs.");
+
+    const input_pump = () => {
+        rl.question('', async (inp) => {
+            let input;
+            if (inp.startsWith("rnd")) {
+
+                input = await client.submitContractInput(JSON.stringify({
+                    type: "rnd"
+                }));
+            }
+            else {
+                console.log("Invalid command. [rnd] expected.")
+            }
+
+            if (input) {
+                const submission = await input.submissionStatus;
+                if (submission.status != "accepted")
+                    console.log("Submission failed. reason: " + submission.reason);
+            }
+
+            input_pump();
+        })
+    }
+    input_pump();
+}
+
+clientApp();

docker/code-templates/nodejs/npl-client/package.json

@@ -0,0 +1,6 @@
+{
+    "name": "_projname_",
+    "dependencies": {
+        "hotpocket-js-client": "^0.5.6"
+    }
+}