import json
import traceback
import mlcroissant as mlc
import func_timeout

WAIT_TIME = 5 * 60  # seconds

def validate_json(file_path):
    """Validate that the file is proper JSON."""
    try:
        with open(file_path, 'r') as f:
            json_data = json.load(f)
        return True, "✅ The file is valid JSON.", json_data
    except json.JSONDecodeError as e:
        error_message = f"❌ Invalid JSON format: {str(e)}"
        return False, error_message, None
    except Exception as e:
        error_message = f"❌ Error reading file: {str(e)}"
        return False, error_message, None

def validate_croissant(json_data):
    """Validate that the JSON follows Croissant schema."""
    try:
        dataset = mlc.Dataset(jsonld=json_data)
        return True, "✅ The dataset passes Croissant validation."
    except mlc.ValidationError as e:
        error_details = traceback.format_exc()
        error_message = f"❌ Validation failed: {str(e)}\n\n{error_details}"
        return False, error_message
    except Exception as e:
        error_details = traceback.format_exc()
        error_message = f"❌ Unexpected error during validation: {str(e)}\n\n{error_details}"
        return False, error_message

def validate_records(json_data):
    """Validate that records can be generated within the time limit."""
    try:
        dataset = mlc.Dataset(jsonld=json_data)
        record_sets = dataset.metadata.record_sets
        
        if not record_sets:
            return True, "✅ No record sets found to validate."
        
        results = []
        
        for record_set in record_sets:
            try:
                records = dataset.records(record_set=record_set.uuid)
                print(records)
                _ = func_timeout.func_timeout(WAIT_TIME, lambda: next(iter(records)))
                results.append(f"✅ Record set '{record_set.uuid}' passed validation.")
            except func_timeout.exceptions.FunctionTimedOut:
                error_message = f"❌ Record set '{record_set.uuid}' generation took too long (>300s)"
                return False, error_message
            except Exception as e:
                error_details = traceback.format_exc()
                error_message = f"❌ Record set '{record_set.uuid}' failed: {str(e)}\n\n{error_details}"
                return False, error_message
        
        return True, "\n".join(results)
    except Exception as e:
        error_details = traceback.format_exc()
        error_message = f"❌ Unexpected error during records validation: {str(e)}\n\n{error_details}"
        return False, error_message 

def generate_validation_report(file_path, json_data, validation_results):
    """Generate a detailed markdown report of the validation results."""
    report = []
    
    # Header
    report.append("# CROISSANT VALIDATION REPORT")
    report.append("=" * 80)
    report.append("")
    
    # Validation Results Section
    report.append("## VALIDATION RESULTS")
    report.append("-" * 80)
    report.append(f"Starting validation for file: {file_path}")
    
    # Process each validation step
    for step_name, passed, message in validation_results:
        report.append("")
        report.append(f"### {step_name}")
        report.append("✓" if passed else "❌")
        report.append(message.replace("✅", "✓").replace("❌", "✗"))
        
        # Add extra details for record sets if available
        if step_name == "Records Generation Test" and json_data:
            try:
                dataset = mlc.Dataset(jsonld=json_data)
                for record_set in dataset.metadata.record_sets:
                    report.append("")
                    report.append(f"#### Record Set: {record_set.uuid}")
                    report.append(f"Description: {record_set.description}")
                    if record_set.data_types:
                        report.append(f"Data Types: {record_set.data_types}")
                    report.append("")
                    report.append("Fields:")
                    for field in record_set.fields:
                        report.append(f"- {field.name} ({field.data_type})")
                        if field.description:
                            report.append(f"  Description: {field.description}")
            except Exception as e:
                report.append(f"Error getting record set details: {str(e)}")
    
    # JSON-LD Reference Section
    report.append("")
    report.append("## JSON-LD REFERENCE")
    report.append("=" * 80)
    report.append("")
    report.append("```json")
    report.append(json.dumps(json_data, indent=2))
    report.append("```")
    
    return "\n".join(report)