autocode.rkt

#lang racket
(require json
         syntax/parse/define
         net/url
         (for-syntax racket/base json net/url))
         
;; Replace YOUR_API_KEY with your actual OpenAI API key
(define-for-syntax api-key "YOUR_API_KEY")

;; Function to read all data from a port
(define-for-syntax (read-all-from-port port)
  (let loop ([lines '()]
             [next-line (read-line port)])
    (if (eof-object? next-line)
        (apply string-append (reverse (map (lambda (line) (string-append line "\n")) lines)))
        (loop (cons next-line lines) (read-line port)))))

;; Function to make OpenAI API call
(define-for-syntax (openai-api-call api-key instr)
  (let* ([url (string->url "https://api.openai.com/v1/chat/completions")]
         [headers (list (format "Authorization: Bearer ~a" api-key)
                        "Content-Type: application/json")]
         [data (hasheq 'model "gpt-4"
                       'messages (list (hasheq 'role "system"
                                               'content "Given a description of the desired functionality, you return a valid racket lambda expression that computes the result. The result should be formatted as a single valid racket lambda expression, without any other formatting or explanation. The first character should be a parentheses.")
                                       (hasheq 'role "user"
                                               'content instr)))]
         [post-data (jsexpr->bytes data)]
         [port (post-pure-port url post-data headers)]
         [response (read-all-from-port port)])
    (close-input-port port)
    response))

;; Macro to replace an instruction with its implementation
(define-syntax (auto-code stx)
  (syntax-case stx ()
    [(_ instr)
     (let* ([response (openai-api-call api-key (syntax->datum #'instr))]
            [parsed-response (string->jsexpr response)]
            [code (hash-ref (hash-ref (car (hash-ref parsed-response 'choices)) 'message) 'content)]
            [expr (read (open-input-string code))])
       #`(begin #,expr))]))

(define fib (auto-code "return the nth fibonacci number"))

(print (fib 7))