# 055: Reactive Forms
# Forms that respond to user input in real-time

state email = ""
state password = ""
state password_confirm = ""

# Reactive validation
computed email_valid = email.length > 0 and email.contains("@")
computed password_valid = password.length >= 8
computed passwords_match = password == password_confirm

computed form_valid = email_valid and password_valid and passwords_match

form signup:
  input email -> email
    placeholder: "your@email.com"

  # Show validation feedback in real-time
  if email != "" and not email_valid:
    show_error "Invalid email format"

  input password -> password
    type: "password"

  if password != "" and not password_valid:
    show_error "Password must be at least 8 characters"

  input password_confirm -> password_confirm
    type: "password"
    placeholder: "Confirm password"

  if password_confirm != "" and not passwords_match:
    show_error "Passwords don't match"

  # Button disabled until form is valid
  button "Sign Up" -> submit()
    disabled: not form_valid

submit():
  show "Account created for {email}"