graceful cli error handling

Author: Zach Alam

cli/commands/stamp.js

@@ -7,27 +7,40 @@ spinner.setSpinnerString(19);
 
 module.exports = {
   prompt: async (env) => {
-
     helpers.killForNoConf();
-    if (!env.file && !env.text) helpers.errorExit("Must supply either -f <file> or -t <text> param.");
-    if (env.file && env.text) helpers.errorExit("Cannot supply both -f <file> and -t <text> params.");
+    if (!env.file && !env.text)
+      helpers.errorExit("Must supply either -f <file> or -t <text> param.");
+    if (env.file && env.text)
+      helpers.errorExit("Cannot supply both -f <file> and -t <text> params.");
     const bitfact = new BitFact(helpers.loadConfFile());
 
     if (env.file) {
       // bitfact stamp file.
+
       spinner.start();
-      const stamped = await bitfact.stampFile(env.file, env.memo);
+
+      try {
+        const stamped = await bitfact.stampFile(env.file, env.memo);
+        helpers.stampDone(stamped.hash, stamped.txid);
+      } catch (e) {
+        helpers.errorExit(e);
+      }
+
       spinner.stop();
-      helpers.stampDone(stamped.hash, stamped.txid);
     }
 
     if (env.text) {
       // bitfact stamp text
       spinner.start();
-      const stamped = await bitfact.stampText(env.text, env.memo);
+
+      try {
+        const stamped = await bitfact.stampText(env.text, env.memo);
+        helpers.stampDone(stamped.hash, stamped.txid);
+      } catch (e) {
+        helpers.errorExit(e);
+      }
+
       spinner.stop();
-      helpers.stampDone(stamped.hash, stamped.txid);
     }
-
   },
 };

cli/commands/verify.js

@@ -7,27 +7,38 @@ spinner.setSpinnerString(19);
 
 module.exports = {
   prompt: async (env) => {
-
     helpers.killForNoConf();
-    if (!env.file && !env.text) helpers.errorExit("Must supply either -f <file> or -t <text> param.");
-    if (env.file && env.text) helpers.errorExit("Cannot supply both -f <file> and -t <text> params.");
+    if (!env.file && !env.text)
+      helpers.errorExit("Must supply either -f <file> or -t <text> param.");
+    if (env.file && env.text)
+      helpers.errorExit("Cannot supply both -f <file> and -t <text> params.");
     const bitfact = new BitFact(helpers.loadConfFile());
-    
+
     if (env.file) {
-      // bitfact stamp file.
+      // bitfact verify file.
       spinner.start();
-      const isStamped = await bitfact.verifyFile(env.file, env.tx);
+
+      try {
+        const isStamped = await bitfact.verifyFile(env.file, env.tx);
+        helpers.verifyDone(isStamped);
+      } catch (e) {
+        helpers.errorExit(e);
+      }
+
       spinner.stop();
-      helpers.verifyDone(isStamped);
     }
 
     if (env.text) {
-      // bitfact stamp text
+      // bitfact verify text
       spinner.start();
-      const isStamped = await bitfact.verifyText(env.text, env.tx);
+
+      try {
+        const isStamped = await bitfact.verifyText(env.text, env.tx);
+        helpers.verifyDone(isStamped);
+      } catch (e) {
+        helpers.errorExit(e);
+      }
       spinner.stop();
-      helpers.verifyDone(isStamped);
     }
-
   },
 };

cli/helpers.js

@@ -28,15 +28,15 @@ const killForNoConf = () => {
 const stampDone = (hash, txid) => {
   if (!hash || !txid) errorExit("Could not write to Blockchain.");
   console.log("");
-  console.log(chalk.green(chalk.bold("Success! Stamped on Blockchain.")));
+  console.log(chalk.green(chalk.bold("🛡️ Success! Stamped on Blockchain.")));
   console.log("Hash: " + chalk.gray(chalk.bold(hash)));
   console.log("Txid: " + chalk.gray(chalk.bold(txid)));
 };
 
 const verifyDone = (status) => {
   if (status === undefined) errorExit("Could not read from Blockchain.");
   console.log("");
-  console.log(chalk.gray(chalk.bold("Response received from Blockchain.")));
+  console.log(chalk.gray(chalk.bold("🛡️ Response received from Blockchain.")));
   console.log(
     "Stamped: " + chalk.bold(status ? chalk.green("YES") : chalk.red("NO"))
   );