Initial upload: ConfDoc v0.1.0 - Config validation and documentation generator

src/confdoc/validator/validator.py

@@ -0,0 +1,127 @@
+from typing import Any, Dict, List, Optional
+from jsonschema import validate, ValidationError as JsonSchemaValidationError
+from jsonschema.exceptions import best_match
+
+from confdoc.validator.errors import ValidationError as CustomValidationError, ErrorFormatter, ErrorSeverity
+
+
+class SchemaValidator:
+    """Validates configuration against JSON Schema with detailed error reporting."""
+    
+    def __init__(self, draft: str = "draft-07"):
+        """Initialize validator with schema draft."""
+        self.draft = draft
+    
+    def validate(self, config: Dict[str, Any], schema: Dict[str, Any]) -> tuple:
+        """
+        Validate configuration against schema.
+        
+        Returns:
+            tuple: (is_valid: bool, errors: List[CustomValidationError])
+        """
+        errors = []
+        
+        try:
+            validate(instance=config, schema=schema, cls=_get_validator_class(self.draft))
+        except JsonSchemaValidationError as e:
+            errors = self._process_validation_error(e, config)
+        
+        return (len(errors) == 0, errors)
+    
+    def validate_multiple(self, configs: List[Dict[str, Any]], schema: Dict[str, Any]) -> Dict[int, List[CustomValidationError]]:
+        """Validate multiple configurations and return errors for each."""
+        results = {}
+        for i, config in enumerate(configs):
+            is_valid, errors = self.validate(config, schema)
+            if not is_valid:
+                results[i] = errors
+        return results
+    
+    def _process_validation_error(
+        self,
+        error: JsonSchemaValidationError,
+        config: Dict[str, Any]
+    ) -> List[CustomValidationError]:
+        """Process jsonschema ValidationError into CustomValidationError objects."""
+        errors = []
+        
+        for schema_error in error.context:
+            error_info = self._extract_error_info(schema_error)
+            
+            severity = ErrorFormatter.classify_severity(error_info)
+            suggestion = ErrorFormatter.generate_suggestion(error_info)
+            
+            custom_error = CustomValidationError(
+                message=schema_error.message,
+                path=self._format_path(schema_error.json_path),
+                line=error_info.get("line"),
+                column=error_info.get("column"),
+                severity=severity,
+                suggestion=suggestion,
+                validator=error_info.get("validator"),
+            )
+            
+            errors.append(custom_error)
+        
+        if not errors:
+            errors = [
+                CustomValidationError(
+                    message=error.message,
+                    path=self._format_path(error.json_path),
+                    severity=ErrorSeverity.ERROR,
+                )
+            ]
+        
+        return errors
+    
+    def _extract_error_info(self, error: JsonSchemaValidationError) -> Dict[str, Any]:
+        """Extract detailed information from a validation error."""
+        info = {
+            "validator": getattr(error, "validator", None),
+            "validator_value": getattr(error, "validator_value", None),
+            "message": error.message,
+        }
+        
+        if hasattr(error, "absolute_schema_path"):
+            schema_path = list(error.absolute_schema_path)
+            if schema_path:
+                info["validator"] = schema_path[-1] if isinstance(schema_path[-1], str) else info["validator"]
+        
+        return info
+    
+    def _format_path(self, json_path: str) -> str:
+        """Format JSON path to dot notation."""
+        if not json_path or json_path == "$":
+            return ""
+        
+        path = json_path.replace("$.", "").replace(".", ".")
+        return path
+    
+    def get_best_match(self, config: Dict[str, Any], schema: Dict[str, Any]) -> Optional[CustomValidationError]:
+        """Get the most relevant validation error."""
+        try:
+            validate(instance=config, schema=schema, cls=_get_validator_class(self.draft))
+            return None
+        except JsonSchemaValidationError as e:
+            best = best_match(e.context)
+            if best:
+                return CustomValidationError(
+                    message=best.message,
+                    path=self._format_path(best.json_path),
+                    severity=ErrorFormatter.classify_severity(
+                        {"validator": getattr(best, "validator", None)}
+                    ),
+                )
+            return CustomValidationError(message=e.message)
+
+
+def _get_validator_class(draft: str):
+    """Get the appropriate validator class for the draft."""
+    from jsonschema import Draft7Validator, Draft201909Validator
+    
+    validators = {
+        "draft-07": Draft7Validator,
+        "2019-09": Draft201909Validator,
+    }
+    
+    return validators.get(draft, Draft7Validator)