open editor after the hook on error

Author: gidoichi

src/commands/prepare-commit-msg-hook.ts

@@ -49,9 +49,16 @@ export const prepareCommitMessageHook = async (
     const spin = spinner();
     spin.start('Generating commit message');
 
-    const commitMessage = await generateCommitMessageByDiff(
-      await getDiff({ files: staged })
-    );
+    let commitMessage: string;
+    try {
+      commitMessage = await generateCommitMessageByDiff(
+        await getDiff({ files: staged })
+      );
+    } catch (error) {
+      spin.stop('Done');
+      throw error;
+    }
+
     spin.stop('Done');
 
     const fileContent = await fs.readFile(messageFilePath);
@@ -65,7 +72,17 @@ export const prepareCommitMessageHook = async (
 
     await fs.writeFile(messageFilePath, message);
   } catch (error) {
-    outro(`${chalk.red('✖')} ${error}`);
-    process.exit(1);
+    try {
+      outro(`${chalk.red('✖')} ${error}`);
+      const fileContent = await fs.readFile(messageFilePath);
+
+      const commentedError = String(error).replace(new RegExp('^', 'gm'), '# ');
+      const message = `\n\n# ---------- [OpenCommit] ---------- #\n# Failed to generate the commit message.\n# To cancel the commit, just close this window without making any changes.\n\n${commentedError}\n\n${fileContent.toString()}`
+
+      await fs.writeFile(messageFilePath, message);
+    } catch (error) {
+      outro(`${chalk.red('✖')} ${error}`);
+      process.exit(1);
+    }
   }
 };