#!/usr/bin/env python
# -*- coding: utf-8 -*-

"""
JSON Schema Validator Test Module

Unit tests for ddms_compliance_suite.json_schema_validator.validator module,
validates JSON data against schema definitions.
"""

import os
import sys
import unittest
import json
from unittest import mock
from pathlib import Path

# Add project root to Python path
sys.path.insert(0, str(Path(__file__).resolve().parents[1]))

# Import classes and functions to test
from ddms_compliance_suite.json_schema_validator.validator import JSONSchemaValidator
from ddms_compliance_suite.models.rule_models import JSONSchemaDefinition, RuleCategory, TargetType

class TestJSONSchemaValidator(unittest.TestCase):
    """JSON Schema Validator Test Class"""
    
    def setUp(self):
        """Setup before tests"""
        # Create validator instance
        self.validator = JSONSchemaValidator()
        
        # Test schema definition
        self.well_schema = {
            "$schema": "http://json-schema.org/draft-07/schema#",
            "type": "object",
            "required": ["wellName", "wellID", "status", "coordinates"],
            "properties": {
                "wellName": {
                    "type": "string",
                    "description": "Well name"
                },
                "wellID": {
                    "type": "string",
                    "pattern": "^W[0-9]{10}$",
                    "description": "Well unique identifier, must be W followed by 10 digits"
                },
                "status": {
                    "type": "string",
                    "enum": ["active", "inactive", "abandoned", "suspended"],
                    "description": "Current well status"
                },
                "coordinates": {
                    "type": "object",
                    "required": ["longitude", "latitude"],
                    "properties": {
                        "longitude": {
                            "type": "number",
                            "minimum": -180,
                            "maximum": 180,
                            "description": "Longitude coordinate"
                        },
                        "latitude": {
                            "type": "number",
                            "minimum": -90,
                            "maximum": 90,
                            "description": "Latitude coordinate"
                        }
                    }
                }
            }
        }
        
        # Create a schema rule
        self.schema_rule = JSONSchemaDefinition(
            id="well-data-schema",
            name="Well Data Schema",
            description="Defines JSON structure for well data",
            category=RuleCategory.JSON_SCHEMA,
            version="1.0.0",
            target_type=TargetType.DATA_OBJECT,
            target_identifier="Well",
            schema_content=self.well_schema
        )
        
    def test_valid_data(self):
        """Test that valid data passes validation"""
        # Valid test data
        valid_data = {
            "wellName": "Test Well-01",
            "wellID": "W0123456789",
            "status": "active",
            "coordinates": {
                "longitude": 116.3833,
                "latitude": 39.9167
            }
        }
        
        # Validate
        result = self.validator.validate(valid_data, self.well_schema)
        
        # Assert
        self.assertTrue(result.is_valid)
        self.assertEqual(len(result.errors), 0)
    
    def test_missing_required_field(self):
        """Test missing required field scenario"""
        # Data missing required field
        invalid_data = {
            "wellName": "Test Well-01",
            "wellID": "W0123456789",
            # Missing status field
            "coordinates": {
                "longitude": 116.3833,
                "latitude": 39.9167
            }
        }
        
        # Validate
        result = self.validator.validate(invalid_data, self.well_schema)
        
        # Assert
        self.assertFalse(result.is_valid)
        self.assertTrue(any("status" in error for error in result.errors))
    
    def test_invalid_pattern(self):
        """Test field with invalid pattern"""
        # Data with invalid wellID format
        invalid_data = {
            "wellName": "Test Well-01",
            "wellID": "ABCDEFGHIJK",  # Does not match W + 10 digits pattern
            "status": "active",
            "coordinates": {
                "longitude": 116.3833,
                "latitude": 39.9167
            }
        }
        
        # Validate
        result = self.validator.validate(invalid_data, self.well_schema)
        
        # Assert
        self.assertFalse(result.is_valid)
        self.assertTrue(any("pattern" in error for error in result.errors))
    
    def test_invalid_enum(self):
        """Test value not in enum"""
        # Data with status not in enum list
        invalid_data = {
            "wellName": "Test Well-01",
            "wellID": "W0123456789",
            "status": "unknown",  # Not in enum list
            "coordinates": {
                "longitude": 116.3833,
                "latitude": 39.9167
            }
        }
        
        # Validate
        result = self.validator.validate(invalid_data, self.well_schema)
        
        # Assert
        self.assertFalse(result.is_valid)
        self.assertTrue(any("enum" in error for error in result.errors))
    
    def test_invalid_number_range(self):
        """Test number out of range"""
        # Data with longitude out of range
        invalid_data = {
            "wellName": "Test Well-01",
            "wellID": "W0123456789",
            "status": "active",
            "coordinates": {
                "longitude": 200.0,  # Outside [-180, 180] range
                "latitude": 39.9167
            }
        }
        
        # Validate
        result = self.validator.validate(invalid_data, self.well_schema)
        
        # Assert
        self.assertFalse(result.is_valid)
        self.assertTrue(any("maximum" in error for error in result.errors))
    
    def test_validate_with_rule(self):
        """Test validation using rule object"""
        # Valid test data
        valid_data = {
            "wellName": "Test Well-01",
            "wellID": "W0123456789",
            "status": "active",
            "coordinates": {
                "longitude": 116.3833,
                "latitude": 39.9167
            }
        }
        
        # Validate using rule object
        result = self.validator.validate_with_rule(valid_data, self.schema_rule)
        
        # Assert
        self.assertTrue(result.is_valid)
        self.assertEqual(len(result.errors), 0)
    
    def test_additional_properties(self):
        """Test handling of additional properties"""
        # Create a schema that prohibits additional properties
        strict_schema = dict(self.well_schema)
        strict_schema["additionalProperties"] = False
        
        # Data with extra property
        data_with_extra = {
            "wellName": "Test Well-01",
            "wellID": "W0123456789",
            "status": "active",
            "coordinates": {
                "longitude": 116.3833,
                "latitude": 39.9167
            },
            "extra_field": "Extra Field"  # Extra field
        }
        
        # Validate
        result = self.validator.validate(data_with_extra, strict_schema)
        
        # Assert
        self.assertFalse(result.is_valid)
        self.assertTrue(any("additionalProperties" in error for error in result.errors))

if __name__ == "__main__":
    unittest.main()