improving error handeling in cli

Author: RkSinghDeo

devolv/iam/validator/cli.py

@@ -1,17 +1,30 @@
 import typer
 from devolv.iam.validator.core import validate_policy_file
 
-app = typer.Typer(help="IAM Validator CLI")
+file_app = typer.Typer(help="Commands to validate IAM policy files.")
 
-@app.command("file")
+@file_app.command("file")
 def validate_file(path: str):
     """
     Validate an AWS IAM policy file (JSON or YAML).
     """
-    findings = validate_policy_file(path)
+    try:
+        findings = validate_policy_file(path)
+    except FileNotFoundError:
+        typer.secho(f"❌ File not found: {path}", fg=typer.colors.RED)
+        raise typer.Exit(code=1)
+    except ValueError as e:
+        typer.secho(f"❌ Error: {e}", fg=typer.colors.RED)
+        raise typer.Exit(code=1)
+    except Exception as e:
+        typer.secho(f"❌ Unexpected error: {e}", fg=typer.colors.RED)
+        raise typer.Exit(code=1)
+
     if not findings:
         typer.secho("✅ Policy is valid and passed all checks.", fg=typer.colors.GREEN)
     else:
+        typer.secho("⚠️ Issues found in the policy:", fg=typer.colors.YELLOW)
         for finding in findings:
-            typer.secho(f"❌ {finding['level'].upper()}: {finding['message']}", fg=typer.colors.RED)
-        raise typer.Exit(code=1)
+            typer.secho(f" - {finding['level'].upper()}: {finding['message']}", fg=typer.colors.RED)
+        raise typer.Exit(code=2)
+