Refactor reporting to provide instant feedback on default output

certo/__main__.py

@@ -12,7 +12,7 @@ import logging
 from docopt import docopt
 
 from certo.checks.hostname import check_host_certificate_expiration
-from certo.output import default_output, json_output
+from certo.report import JSONReporter, DefaultReporter
 
 if __name__ == "__main__":
     args = docopt(__doc__)
@@ -23,17 +23,18 @@ if __name__ == "__main__":
     hostnames = args.get("<hostnames>")
     days_to_expiration = int(args.get("--days-to-expiration"))
 
-    results = []
+    # @todo factory
+    if output_as_json:
+        reporter = JSONReporter()
+    else:
+        reporter = DefaultReporter()
 
+    # @todo async
     for hs in hostnames:
         logging.info(f"Getting CERT from {hs}")
-        results.append(check_host_certificate_expiration(hs, days_to_expiration))
+        reporter.add_check(check_host_certificate_expiration(hs, days_to_expiration))
 
-    failed = list(r for r in results if not r.check_successful)
+    if log := reporter.report():
+        print(log)
 
-    if output_as_json:
-        print(json_output(results))
-    else:
-        print(default_output(results))
-
-    exit(len(failed))
+    exit(reporter.num_failed())