package workflow

import (
	"context"
	"fmt"
	"time"

	"go.temporal.io/sdk/workflow"
)

// HelloWorldWorkflow is a simple hello world workflow
func HelloWorldWorkflow(ctx workflow.Context, name string) (string, error) {
	opts := workflow.ActivityOptions{
		StartToCloseTimeout: time.Minute,
	}
	ctx = workflow.WithActivityOptions(ctx, opts)

	var result string
	if err := workflow.ExecuteActivity(ctx, GreetActivity, name).Get(ctx, &result); err != nil {
		return "", err
	}
	return result, nil
}

// GreetActivity greets someone
func GreetActivity(ctx context.Context, name string) (string, error) {
	return fmt.Sprintf("Hello, %s!", name), nil
}

// ValidateOrderActivity validates an order
func ValidateOrderActivity(ctx context.Context, orderID string) (bool, error) {
	// Simulate validation
	if orderID == "" {
		return false, nil
	}
	return true, nil
}

// ProcessPaymentActivity processes payment
func ProcessPaymentActivity(ctx context.Context, orderID string) (string, error) {
	// Simulate payment processing
	return fmt.Sprintf("payment-%s", orderID[:min(len(orderID), 3)]), nil
}

// NotifyCustomerActivity sends notification
func NotifyCustomerActivity(ctx context.Context, orderID string) (string, error) {
	// Simulate notification
	return fmt.Sprintf("notified for order %s", orderID), nil
}

func min(a, b int) int {
	if a < b {
		return a
	}
	return b
}