From af0f25fbd88f7a840fa0cd47e9276a901f5540dd Mon Sep 17 00:00:00 2001
From: Andrey Epifancev <andrey.epifancev@ssi-solutions.ru>
Date: Sat, 3 Oct 2026 18:04:49 +0400
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Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
---
 scripts/validate_contracts.py | 116 ++++++++++++++++++++++++++++++++++
 1 file changed, 116 insertions(+)
 create mode 100644 scripts/validate_contracts.py

diff --git a/scripts/validate_contracts.py b/scripts/validate_contracts.py
new file mode 100644
index 0000000..a34c2d6
--- /dev/null
+++ b/scripts/validate_contracts.py
@@ -0,0 +1,116 @@
+#!/usr/bin/env python3
+"""Валидация примеров контракта распознавания схемами JSON Schema 2020-12.
+
+Запуск из любого cwd: python scripts/validate_contracts.py
+Зависимости: стандартная библиотека + jsonschema.
+Код возврата: 0 — всё валидно, 1 — любая ошибка.
+"""
+import datetime
+import json
+import re
+import sys
+from pathlib import Path
+
+from jsonschema import Draft202012Validator, FormatChecker
+
+ROOT = Path(__file__).resolve().parent.parent
+CONTRACTS = ROOT / "contracts"
+EXAMPLES = CONTRACTS / "examples"
+
+SCHEMAS = {
+    "request": CONTRACTS / "recognition-request.schema.json",
+    "message": CONTRACTS / "recognition-result-message.schema.json",
+    "result": CONTRACTS / "recognition-result.schema.json",
+}
+
+# Порядок важен: result-message-* проверяется раньше result-*.
+PATTERNS = [
+    ("request-", "request"),
+    ("result-message-", "message"),
+    ("result-", "result"),
+]
+
+_DATE_TIME_RE = re.compile(r"^\d{4}-\d{2}-\d{2}[Tt]\d{2}:\d{2}:\d{2}(\.\d+)?([Zz]|[+-]\d{2}:\d{2})$")
+
+
+def _check_date_time(value):
+    # Собственная проверка вместо rfc3339-validator: нужна и дата, и время, и часовой пояс.
+    if not isinstance(value, str):
+        return True
+    if not _DATE_TIME_RE.match(value):
+        return False
+    datetime.datetime.fromisoformat(value.replace("z", "Z"))  # ValueError -> формат не прошёл
+    return True
+
+
+def make_format_checker():
+    checker = FormatChecker()
+    checker.checks("date-time", raises=ValueError)(_check_date_time)
+    return checker
+
+
+def short_path(error):
+    path = "/".join(str(p) for p in error.absolute_path)
+    return f"{path or '<root>'}: {error.message[:120]}"
+
+
+def main():
+    failed = False
+    validators = {}
+    format_checker = make_format_checker()
+
+    for kind, path in SCHEMAS.items():
+        if not path.is_file():
+            print(f"FAIL  схема {path.name}: файл не найден")
+            failed = True
+            continue
+        try:
+            schema = json.loads(path.read_text(encoding="utf-8"))
+            Draft202012Validator.check_schema(schema)
+        except Exception as exc:  # битый JSON или нарушение метасхемы
+            print(f"FAIL  схема {path.name}: {str(exc).splitlines()[0][:150]}")
+            failed = True
+            continue
+        validators[kind] = Draft202012Validator(schema, format_checker=format_checker)
+        print(f"OK    схема {path.name}")
+
+    counts = {kind: 0 for kind in SCHEMAS}
+    for example in sorted(EXAMPLES.glob("*.json")):
+        kind = next((k for prefix, k in PATTERNS if example.name.startswith(prefix)), None)
+        if kind is None:
+            print(f"FAIL  {example.name}: имя не подходит ни под один шаблон (request-*, result-message-*, result-*)")
+            failed = True
+            continue
+        counts[kind] += 1
+        validator = validators.get(kind)
+        if validator is None:
+            print(f"FAIL  {example.name} [{SCHEMAS[kind].name}]: схема недоступна")
+            failed = True
+            continue
+        try:
+            instance = json.loads(example.read_text(encoding="utf-8"))
+        except ValueError as exc:
+            print(f"FAIL  {example.name} [{SCHEMAS[kind].name}]: не JSON: {exc}")
+            failed = True
+            continue
+        errors = sorted(validator.iter_errors(instance), key=lambda e: list(e.absolute_path))
+        if errors:
+            failed = True
+            print(f"FAIL  {example.name} [{SCHEMAS[kind].name}]")
+            for error in errors:
+                print(f"        {short_path(error)}")
+        else:
+            print(f"OK    {example.name} [{SCHEMAS[kind].name}]")
+
+    for kind, count in counts.items():
+        if count == 0:
+            print(f"FAIL  нет ни одного примера для схемы {SCHEMAS[kind].name}")
+            failed = True
+
+    total = sum(counts.values())
+    print(f"Итого: примеров {total}, {'есть ошибки' if failed else 'всё валидно'}")
+    return 1 if failed else 0
+
+
+if __name__ == "__main__":
+    sys.exit(main())