#!/usr/bin/env python3
"""
Script to create the Auto Settlement Letter workflow
This workflow automatically generates a settlement letter when a file status changes to "CLOSED"
"""
import asyncio
import sys
import os

# Add the project root to Python path
sys.path.insert(0, os.path.join(os.path.dirname(__file__), '..'))

from sqlalchemy.orm import Session
from app.database.base import get_db
from app.models.document_workflows import (
    DocumentWorkflow, WorkflowAction, WorkflowTriggerType, 
    WorkflowActionType, WorkflowStatus
)
from app.models.templates import DocumentTemplate


def create_settlement_workflow():
    """Create the Auto Settlement Letter workflow"""
    
    # Get database session
    db = next(get_db())
    
    try:
        # Check if workflow already exists
        existing = db.query(DocumentWorkflow).filter(
            DocumentWorkflow.name == "Auto Settlement Letter"
        ).first()
        
        if existing:
            print(f"Workflow 'Auto Settlement Letter' already exists with ID {existing.id}")
            return existing
        
        # Find or create a settlement letter template
        template = db.query(DocumentTemplate).filter(
            DocumentTemplate.name.ilike("%settlement%")
        ).first()
        
        if not template:
            # Create a basic settlement letter template
            template = DocumentTemplate(
                name="Settlement Letter Template",
                description="Template for automatic settlement letter generation",
                category="SETTLEMENT",
                active=True,
                created_by="system"
            )
            db.add(template)
            db.flush()  # Get the ID
            print(f"Created settlement letter template with ID {template.id}")
        else:
            print(f"Using existing template: {template.name} (ID: {template.id})")
        
        # Create the workflow
        workflow = DocumentWorkflow(
            name="Auto Settlement Letter",
            description="Automatically generate a settlement letter when file status changes to CLOSED",
            trigger_type=WorkflowTriggerType.FILE_STATUS_CHANGE,
            trigger_conditions={
                "type": "simple",
                "field": "new_state.status",
                "operator": "equals",
                "value": "CLOSED"
            },
            delay_minutes=0,  # Execute immediately
            max_retries=3,
            retry_delay_minutes=30,
            timeout_minutes=60,
            priority=8,  # High priority
            category="DOCUMENT_GENERATION",
            tags=["settlement", "closure", "automated"],
            status=WorkflowStatus.ACTIVE,
            created_by="system"
        )
        
        db.add(workflow)
        db.flush()  # Get the workflow ID
        
        # Create the document generation action
        action = WorkflowAction(
            workflow_id=workflow.id,
            action_type=WorkflowActionType.GENERATE_DOCUMENT,
            action_order=1,
            action_name="Generate Settlement Letter",
            template_id=template.id,
            output_format="PDF",
            custom_filename_template="Settlement_Letter_{{FILE_NO}}_{{CLOSED_DATE}}.pdf",
            continue_on_failure=False,
            parameters={
                "auto_save": True,
                "notification": "Generate settlement letter for closed file"
            }
        )
        
        db.add(action)
        db.commit()
        
        print(f"✅ Successfully created 'Auto Settlement Letter' workflow:")
        print(f"   - Workflow ID: {workflow.id}")
        print(f"   - Action ID: {action.id}")
        print(f"   - Template ID: {template.id}")
        print(f"   - Trigger: File status change to 'CLOSED'")
        print(f"   - Action: Generate PDF settlement letter")
        
        return workflow
        
    except Exception as e:
        db.rollback()
        print(f"❌ Error creating settlement workflow: {str(e)}")
        raise
    finally:
        db.close()


if __name__ == "__main__":
    workflow = create_settlement_workflow()