#lang scheme/base
(require mzlib/contract
         mzlib/serialize
         mzlib/plt-match
         net/url)

(define (bytes-ci=? b0 b1)
  (string-ci=? (bytes->string/utf-8 b0)
               (bytes->string/utf-8 b1)))

(define-serializable-struct header (field value))
(define (headers-assq* f hs)
  (match hs
    [(list)
     #f]
    [(list-rest (and h (struct header (af aw))) hs)
     (if (bytes-ci=? af f)
         h
         (headers-assq f hs))]))
(define (headers-assq f hs)
  (match hs
    [(list)
     #f]
    [(list-rest (and h (struct header (af av))) hs)
     (if (bytes=? af f)
         h
         (headers-assq f hs))]))       
(provide/contract
 [headers-assq (bytes? (listof header?) . -> . (or/c false/c header?))]
 [headers-assq* (bytes? (listof header?) . -> . (or/c false/c header?))]
 [struct header ([field bytes?]
                 [value bytes?])])

(define-serializable-struct binding (id))
(define-serializable-struct (binding:form binding) (value))
(define-serializable-struct (binding:file binding) (filename content))
(define (bindings-assq ti bs)
  (match bs
    [(list)
     #f]
    [(list-rest (and b (struct binding (i))) bs)
     (if (equal? ti i)
         b
         (bindings-assq ti bs))]))
(provide/contract
 [bindings-assq (bytes? (listof binding?) . -> . (or/c false/c binding?))]
 [struct binding ([id bytes?])]
 [struct (binding:form binding) ([id bytes?]
                                 [value bytes?])]
 [struct (binding:file binding) ([id bytes?]
                                 [filename bytes?]
                                 [content bytes?])])

(define-serializable-struct request (method uri headers/raw bindings/raw post-data/raw
                                            host-ip host-port client-ip))
(provide/contract
 [struct request ([method symbol?]
                  [uri url?] 
                  [headers/raw (listof header?)]
                  [bindings/raw (listof binding?)]
                  [post-data/raw (or/c false/c bytes?)]
                  [host-ip string?] [host-port number?]
                  [client-ip string?])])