Process Optimization: Workflow Automation System

# Process mapping and workflow definition
from camunda.external_task.external_task_worker import ExternalTaskWorker
from camunda.external_task.external_task import ExternalTask
import json
import logging

class ProcessMapper:
    def __init__(self):
        self.processes = {}
        self.decision_trees = {}
        self.logger = logging.getLogger(__name__)
    
    def map_business_process(self, process_name, steps, decisions, exceptions):
        """Map a business process with all its components"""
        process_definition = {
            'name': process_name,
            'steps': steps,
            'decisions': decisions,
            'exceptions': exceptions,
            'automation_points': self.identify_automation_opportunities(steps),
            'integration_points': self.identify_integration_points(steps)
        }
        
        self.processes[process_name] = process_definition
        return process_definition
    
    def identify_automation_opportunities(self, steps):
        """Identify steps that can be automated"""
        automation_candidates = []
        
        for step in steps:
            if self.is_automation_candidate(step):
                automation_candidates.append({
                    'step_id': step['id'],
                    'step_name': step['name'],
                    'automation_type': self.determine_automation_type(step),
                    'estimated_savings': self.calculate_time_savings(step),
                    'implementation_complexity': self.assess_complexity(step)
                })
        
        return automation_candidates
    
    def is_automation_candidate(self, step):
        """Determine if a step is suitable for automation"""
        criteria = [
            step.get('repetitive', False),
            step.get('rule_based', False),
            step.get('manual_effort', 0) > 5,  # More than 5 minutes
            not step.get('requires_human_judgment', False)
        ]
        
        return sum(criteria) >= 2  # At least 2 criteria must be met
    
    def determine_automation_type(self, step):
        """Determine the best automation approach for a step"""
        if step.get('data_processing', False):
            return 'ETL_Pipeline'
        elif step.get('web_interaction', False):
            return 'RPA'
        elif step.get('api_integration', False):
            return 'API_Integration'
        elif step.get('document_processing', False):
            return 'Document_Automation'
        else:
            return 'Workflow_Automation'
    
    def create_decision_tree(self, process_name, decisions):
        """Create decision tree for complex processes"""
        decision_tree = {
            'process': process_name,
            'nodes': {},
            'edges': [],
            'conditions': {}
        }
        
        for decision in decisions:
            node_id = f"decision_{decision['id']}"
            decision_tree['nodes'][node_id] = {
                'type': 'decision',
                'name': decision['name'],
                'conditions': decision['conditions'],
                'outcomes': decision['outcomes']
            }
            
            # Add edges for each outcome
            for outcome in decision['outcomes']:
                edge = {
                    'from': node_id,
                    'to': outcome['next_step'],
                    'condition': outcome['condition'],
                    'probability': outcome.get('probability', 1.0)
                }
                decision_tree['edges'].append(edge)
        
        self.decision_trees[process_name] = decision_tree
        return decision_tree

class WorkflowAutomation:
    def __init__(self, process_mapper):
        self.process_mapper = process_mapper
        self.workers = {}
    
    def create_automated_workflow(self, process_name):
        """Create automated workflow from process definition"""
        process_def = self.process_mapper.processes[process_name]
        
        # Create workflow definition
        workflow = {
            'name': f"automated_{process_name}",
            'version': '1.0',
            'tasks': [],
            'decisions': [],
            'error_handling': []
        }
        
        # Convert steps to automated tasks
        for step in process_def['steps']:
            if step['id'] in [auto['step_id'] for auto in process_def['automation_points']]:
                task = self.create_automated_task(step)
                workflow['tasks'].append(task)
        
        # Add decision points
        for decision in process_def['decisions']:
            workflow['decisions'].append(self.create_decision_task(decision))
        
        # Add error handling
        for exception in process_def['exceptions']:
            workflow['error_handling'].append(self.create_error_handler(exception))
        
        return workflow
    
    def create_automated_task(self, step):
        """Create automated task definition"""
        automation_type = self.process_mapper.determine_automation_type(step)
        
        task = {
            'id': f"task_{step['id']}",
            'name': step['name'],
            'type': automation_type,
            'config': self.get_task_config(automation_type, step),
            'retry_policy': {
                'max_retries': 3,
                'retry_delay': 60,
                'backoff_multiplier': 2
            },
            'timeout': step.get('timeout', 300)
        }
        
        return task
    
    def get_task_config(self, automation_type, step):
        """Get configuration for different automation types"""
        configs = {
            'ETL_Pipeline': {
                'source': step.get('data_source'),
                'transformations': step.get('transformations', []),
                'destination': step.get('data_destination')
            },
            'RPA': {
                'application': step.get('target_application'),
                'actions': step.get('automation_actions', []),
                'selectors': step.get('ui_selectors', {})
            },
            'API_Integration': {
                'endpoint': step.get('api_endpoint'),
                'method': step.get('http_method', 'GET'),
                'headers': step.get('headers', {}),
                'payload_template': step.get('payload_template')
            }
        }
        
        return configs.get(automation_type, {})

// System integration middleware
import org.apache.camel.builder.RouteBuilder;
import org.apache.camel.model.dataformat.JsonLibrary;
import org.apache.camel.Exchange;
import org.apache.camel.Processor;

public class SystemIntegrationMiddleware extends RouteBuilder {
    
    @Override
    public void configure() throws Exception {
        // Error handling
        errorHandler(deadLetterChannel("direct:errorHandler")
            .maximumRedeliveries(3)
            .redeliveryDelay(1000)
            .backOffMultiplier(2));
        
        // Data transformation and validation
        from("direct:processData")
            .routeId("dataProcessingRoute")
            .log("Processing data: ${body}")
            .choice()
                .when(header("source").isEqualTo("legacy_system"))
                    .to("direct:transformLegacyData")
                .when(header("source").isEqualTo("modern_api"))
                    .to("direct:transformAPIData")
                .otherwise()
                    .to("direct:transformGenericData")
            .end()
            .to("direct:validateData")
            .to("direct:routeToDestination");
        
        // Legacy system integration
        from("direct:transformLegacyData")
            .routeId("legacyDataTransformation")
            .process(new LegacyDataProcessor())
            .marshal().json(JsonLibrary.Jackson)
            .log("Transformed legacy data: ${body}");
        
        // API data transformation
        from("direct:transformAPIData")
            .routeId("apiDataTransformation")
            .process(new APIDataProcessor())
            .marshal().json(JsonLibrary.Jackson)
            .log("Transformed API data: ${body}");
        
        // Data validation
        from("direct:validateData")
            .routeId("dataValidation")
            .process(new DataValidator())
            .choice()
                .when(header("validation_status").isEqualTo("valid"))
                    .log("Data validation passed")
                .otherwise()
                    .log("Data validation failed: ${header.validation_errors}")
                    .to("direct:handleValidationError")
            .end();
        
        // Error handling
        from("direct:errorHandler")
            .routeId("errorHandler")
            .log("Error occurred: ${exception.message}")
            .process(new ErrorProcessor())
            .to("direct:notifyAdministrator");
    }
}

class LegacyDataProcessor implements Processor {
    @Override
    public void process(Exchange exchange) throws Exception {
        String legacyData = exchange.getIn().getBody(String.class);
        
        // Transform legacy format to standard format
        Map transformedData = new HashMap<>();
        
        // Parse legacy CSV format
        String[] lines = legacyData.split("\n");
        for (String line : lines) {
            String[] fields = line.split(",");
            if (fields.length >= 3) {
                Map record = new HashMap<>();
                record.put("id", fields[0]);
                record.put("name", fields[1]);
                record.put("value", Double.parseDouble(fields[2]));
                record.put("timestamp", new Date());
                
                transformedData.put(fields[0], record);
            }
        }
        
        exchange.getIn().setBody(transformedData);
    }
}

class APIDataProcessor implements Processor {
    @Override
    public void process(Exchange exchange) throws Exception {
        String apiData = exchange.getIn().getBody(String.class);
        
        // Parse JSON API response
        ObjectMapper mapper = new ObjectMapper();
        Map apiResponse = mapper.readValue(apiData, Map.class);
        
        // Extract relevant data
        Map transformedData = new HashMap<>();
        if (apiResponse.containsKey("data")) {
            List> dataList = (List>) apiResponse.get("data");
            
            for (Map item : dataList) {
                String id = (String) item.get("id");
                Map record = new HashMap<>();
                record.put("id", id);
                record.put("name", item.get("name"));
                record.put("value", item.get("value"));
                record.put("timestamp", new Date());
                
                transformedData.put(id, record);
            }
        }
        
        exchange.getIn().setBody(transformedData);
    }
}

class DataValidator implements Processor {
    @Override
    public void process(Exchange exchange) throws Exception {
        Map data = exchange.getIn().getBody(Map.class);
        List errors = new ArrayList<>();
        
        // Validate required fields
        for (Map.Entry entry : data.entrySet()) {
            Map record = (Map) entry.getValue();
            
            if (!record.containsKey("id") || record.get("id") == null) {
                errors.add("Missing ID for record: " + entry.getKey());
            }
            
            if (!record.containsKey("name") || record.get("name") == null) {
                errors.add("Missing name for record: " + entry.getKey());
            }
            
            if (!record.containsKey("value") || record.get("value") == null) {
                errors.add("Missing value for record: " + entry.getKey());
            }
        }
        
        if (errors.isEmpty()) {
            exchange.getIn().setHeader("validation_status", "valid");
        } else {
            exchange.getIn().setHeader("validation_status", "invalid");
            exchange.getIn().setHeader("validation_errors", String.join("; ", errors));
        }
    }
}