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#lang racket
(require web-server/servlet
web-server/formlets)
(provide (all-defined-out))
(define interface-version 'v1)
(define timeout +inf.0)
; request-number : str -> num
(define (request-number which-number)
(send/formlet
(formlet
(#%# "Enter the " ,which-number " number to add: "
,{input-int . => . the-number}
(input ([type "submit"] [name "enter"] [value "Enter"])))
the-number)
#:wrap
(lambda (f-expr)
`(html (head (title "Enter a Number to Add"))
(body ([bgcolor "white"])
,f-expr)))))
(define (start initial-request)
(response/xexpr
`(html (head (title "Sum"))
(body ([bgcolor "white"])
(p "The answer is "
,(number->string (+ (request-number "first") (request-number "second"))))))))
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