Wait for user input before ending

… In preparation for unregistering user at the end.

1 files changed, 26 insertions, 4 deletions

diff --git a/lambda-calcul/javascript/index.js b/lambda-calcul/javascript/index.js
index a71697d..5c080d1 100644
--- a/lambda-calcul/javascript/index.js
+++ b/lambda-calcul/javascript/index.js
@@ -1,15 +1,37 @@
+const { createInterface } = require('readline/promises');
+
 const LC = require('./src/client');
 
 const playerName = process.env.PLAYER_NAME || 'A shy user';
 
-client = LC.newClient({
+const client = LC.newClient({
   playerName,
   challengerURL: process.env.CHALLENGER_URL,
 });
 
-client.start()
-  .then(token => console.log(`${playerName} has registered with token ${token}`) || token)
-  .then(client.nextChallenge)
+let token;
+
+const solveNextChallenge = (token) => client
+  .nextChallenge(token)
   .then(challenge => console.log(`Next challenge: ${challenge}`) || challenge)
   .then(client.solve)
   .then(solution => console.log(`… solved into: ${solution}`));
+
+const waitForEnterToBePressed = () => {
+    const readlineInterface = createInterface({
+        input: process.stdin,
+        output: process.stdout,
+    });
+
+    return readlineInterface.question('Done. Press Enter to finish.')
+      .then(() => readlineInterface.close());
+};
+
+client.start()
+  .then(t => {
+    token = t;
+    console.log(`${playerName} has registered with token ${t}`);
+  })
+  .then(() => solveNextChallenge(token))
+  .then(() => waitForEnterToBePressed())
+  .then(() => console.log('Done done!'));