// flow_script.rhai
// Example Rhai script for working with Flow models

// Constants for Flow status
const STATUS_DRAFT = "draft";
const STATUS_ACTIVE = "active";
const STATUS_COMPLETED = "completed";
const STATUS_CANCELLED = "cancelled";

// Create a new flow using builder pattern
let my_flow = new_flow(0, "flow-123");
name(my_flow, "Document Approval Flow");
status(my_flow, STATUS_DRAFT);

print(`Created flow: ${get_flow_name(my_flow)} (ID: ${get_flow_id(my_flow)})`);
print(`Status: ${get_flow_status(my_flow)}`);

// Create flow steps using builder pattern
let step1 = new_flow_step(0, 1);
description(step1, "Initial review by legal team");
status(step1, STATUS_DRAFT);

let step2 = new_flow_step(0, 2);
description(step2, "Approval by department head");
status(step2, STATUS_DRAFT);

let step3 = new_flow_step(0, 3);
description(step3, "Final signature by CEO");
status(step3, STATUS_DRAFT);

// Create signature requirements using builder pattern
let req1 = new_signature_requirement(0, get_flow_step_id(step1), "legal@example.com", "Please review this document");
signed_by(req1, "Legal Team");
status(req1, STATUS_DRAFT);

let req2 = new_signature_requirement(0, get_flow_step_id(step2), "dept@example.com", "Department approval needed");
signed_by(req2, "Department Head");
status(req2, STATUS_DRAFT);

let req3 = new_signature_requirement(0, get_flow_step_id(step3), "ceo@example.com", "Final approval required");
signed_by(req3, "CEO");
status(req3, STATUS_DRAFT);

print(`Created flow steps with signature requirements`);

// Add steps to the flow
let flow_with_steps = my_flow;
add_step(flow_with_steps, step1);
add_step(flow_with_steps, step2);
add_step(flow_with_steps, step3);

print(`Added steps to flow. Flow now has ${get_flow_steps(flow_with_steps).len()} steps`);

// Activate the flow
let active_flow = flow_with_steps;
status(active_flow, STATUS_ACTIVE);
print(`Updated flow status to: ${get_flow_status(active_flow)}`);

// Save the flow to the database
let saved_flow = db::save_flow(active_flow);
print(`Flow saved to database with ID: ${get_flow_id(saved_flow)}`);

// Save signature requirements to the database
let saved_req1 = db::save_signature_requirement(req1);
let saved_req2 = db::save_signature_requirement(req2);
let saved_req3 = db::save_signature_requirement(req3);
print(`Signature requirements saved to database with IDs: ${get_signature_requirement_id(saved_req1)}, ${get_signature_requirement_id(saved_req2)}, ${get_signature_requirement_id(saved_req3)}`);

// Retrieve the flow from the database
let retrieved_flow = db::get_flow_by_id(get_flow_id(saved_flow));
print(`Retrieved flow: ${get_flow_name(retrieved_flow)}`);
print(`It has ${get_flow_steps(retrieved_flow).len()} steps`);

// Complete the flow
let completed_flow = retrieved_flow;
status(completed_flow, STATUS_COMPLETED);
print(`Updated retrieved flow status to: ${get_flow_status(completed_flow)}`);

// Save the updated flow
db::save_flow(completed_flow);
print("Updated flow saved to database");

// List all flows in the database
let all_flows = db::list_flows();
print("\nListing all flows in database:");
let flow_count = 0;
for flow in all_flows {
    print(`  - Flow: ${get_flow_name(flow)} (ID: ${get_flow_id(flow)})`);
    flow_count += 1;
}
print(`Total flows: ${flow_count}`);

// List all signature requirements
let all_reqs = db::list_signature_requirements();
print("\nListing all signature requirements in database:");
let req_count = 0;
for req in all_reqs {
    print(`  - Requirement for step ${get_signature_requirement_flow_step_id(req)} (ID: ${get_signature_requirement_id(req)})`);
    req_count += 1;
}
print(`Total signature requirements: ${req_count}`);

// Clean up - delete the flow
db::delete_flow(get_flow_id(completed_flow));
print(`Deleted flow with ID: ${get_flow_id(completed_flow)}`);

// Clean up - delete signature requirements
db::delete_signature_requirement(get_signature_requirement_id(saved_req1));
db::delete_signature_requirement(get_signature_requirement_id(saved_req2));
db::delete_signature_requirement(get_signature_requirement_id(saved_req3));
print("Deleted all signature requirements");