Refactor reporting to provide instant feedback on default output

certo/report.py

@@ -0,0 +1,53 @@
+import json
+
+
+class CheckReporter:
+    def __init__(self):
+        self.checks = list()
+
+    def add_check(self, check):
+        self.checks.append(check)
+
+    def failed(self):
+        return list(r for r in self.checks if not r.check_successful)
+
+    def num_failed(self):
+        return len(self.failed())
+
+    def report(self):
+        ...
+
+
+class JSONReporter(CheckReporter):
+    def __make_check_serialisable(check):
+        """
+        Converts a CertCheckResult for json serialisation
+        :param check: CertCheckResult as output by checks
+        :return: check as dict() with appropriate type conversions for json.dumps
+        """
+        ret = check._asdict()
+        if check.expiration_date:
+            ret["expiration_date"] = check.expiration_date.strftime("%c %Z")
+        return ret
+
+    def report(self):
+        return json.dumps(
+            list(
+                map(
+                    lambda check: JSONReporter.__make_check_serialisable(check),
+                    self.checks,
+                )
+            ),
+            indent=4,
+        )
+
+
+class DefaultReporter(CheckReporter):
+    def add_check(self, check):
+        super().add_check(check)
+        result = f"[{'PASS' if check.check_successful else 'FAIL'}] Check host {check.hostname}"
+        if check.debug:
+            result += f" - {check.debug}"
+        if check.expiration_date:
+            result += f" - Certificate expires on {check.expiration_date} {check.expiration_date.tzname()}"
+        print(result)