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class Stripe.TokenRequest extends Backbone.Model
  validate: (attrs)->
    error =
      if !attrs.name
        attribute: "name"
        message: "Please enter your name"
      else if !attrs.email
        attribute: "email"
        message: "Invalid email"
      else if !Stripe.validateCardNumber(attrs.number)
        attribute: "number"
        message: "Invalid card number"
      else if(!Stripe.validateExpiry attrs.exp_month, attrs.exp_year)
        attribute: "exp_year"
        message: "Invalid expiration date"
      else if(!Stripe.validateCVC attrs.cvc)
        attribute: "cvc"
        message: "Invalid CVC code"

  sync: (method, model, options)->
    fields = model.attributes

    amount = model.attributes.amount
    delete model.attributes.amount

    callback = (status, response)->
      if response.error
        options.error(response.error, model, options)
      else
        token = new Stripe.Token response
        model.token = token
        options.success(model, status, response)

    Stripe.createToken fields, amount, callback