From 0edd01b5538c10703f4b32751b5189bc8ac504d3 Mon Sep 17 00:00:00 2001
From: Ekaitz Zarraga <ekaitz@elenq.tech>
Date: Thu, 28 Sep 2023 00:53:04 +0200
Subject: First commit

---
 neocities/requests.scm | 132 +++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 132 insertions(+)
 create mode 100644 neocities/requests.scm

(limited to 'neocities/requests.scm')

diff --git a/neocities/requests.scm b/neocities/requests.scm
new file mode 100644
index 0000000..0cb060c
--- /dev/null
+++ b/neocities/requests.scm
@@ -0,0 +1,132 @@
+(define-module (neocities requests)
+  #:use-module (neocities mime)
+  #:use-module (json)
+  #:use-module (ice-9 match)
+  #:use-module (ice-9 iconv)
+  #:use-module (ice-9 binary-ports)
+  #:use-module (gcrypt base64)
+  #:use-module (gcrypt random)
+  #:use-module (rnrs base)
+  #:use-module (rnrs bytevectors)
+  #:use-module (scheme base)
+  #:use-module (web uri)
+  #:use-module (web client)
+  #:use-module (web response)
+  #:export (neocities-url
+            neocities-request
+            encode-basic-auth-header
+            encode-bearer-auth-header
+            encode-multipart-body))
+
+(define* (neocities-url endpoint #:key (querystring '())
+                                       (hostname     #f))
+  (define (encode-querystring querystring)
+    (string-join
+      (map (lambda (x)
+             (let ((key   (car x))
+                   (value (cdr x)))
+               (if (list? value)
+                 (string-join
+                   (map (lambda (y)
+                          (string-append (uri-encode key) "[]=" (uri-encode y)))
+                        value)
+                   "&")
+                 (string-append (uri-encode key) "=" (uri-encode value)))))
+           querystring)
+      "&"))
+
+  ;; This is for testing locally :)
+  #;(build-uri 'http #:host "localhost"
+                      #:port 1234
+                      #:path (string-append "/api/" endpoint)
+                      #:query (encode-querystring querystring))
+  (build-uri 'https
+           #:host (or hostname "neocities.org")
+           #:path (string-append "/api/" endpoint)
+           #:query (encode-querystring querystring)))
+
+
+(define (encode-multipart-body files)
+  "files is an alist with the filename and destination"
+
+  (define (name file)
+    (car file))
+
+  (define (destination file)
+    (cdr file))
+
+  (define (type file)
+    (let* ((extension (car (last-pair (string-split (name file) #\.))))
+           (type (assoc-ref mime-types extension)))
+      (if (string? type)
+          type
+          (throw 'neocities "Unknown mime-type"))))
+
+  (define (encode-file file)
+    (bytevector-append
+      (string->utf8
+        (string-append
+          "Content-Disposition: form-data;"
+          "filename=\"" (destination file) "\"\r\n"
+          "Content-Type: " (type file) " \r\n\r\n"))
+      (call-with-input-file (name file) get-bytevector-all #:binary #t)
+      (string->utf8 "\r\n")))
+
+  (define boundary
+    (string-append "----------------------------------------------------------"
+      (random-token)))
+
+  (values boundary
+    (apply bytevector-append
+           (map (lambda (file i)
+                  (bytevector-append
+                    (string->utf8 (string-append boundary "\r\n"))
+                    (encode-file file)
+                    (if (= (+ i 1) (length files))
+                      (string->utf8 (string-append "\r\n" boundary "--\r\n\r\n"))
+                      #vu8())))
+                files
+                (iota (length files))))))
+
+(define (encode-basic-auth-header username password)
+  (string-append "Basic "
+                 (base64-encode
+                   (string->utf8 (string-append username ":" password)))))
+
+(define (encode-bearer-auth-header apikey)
+  (string-append "Bearer " apikey))
+
+
+(define* (neocities-request method
+                            url
+                            #:key (body  #f)
+                                  (auth  #f)
+                                  (content-type #f))
+
+  (define (response-error res)
+    `(("response-code" . ,(response-code res))
+      ("response-phrase" .
+       ,(response-reason-phrase res))
+      ("response" .
+       ,(if (bytevector? body)
+          (utf8->string body)
+          body))))
+
+  (define (response-ok? response)
+    (> 100 (- (response-code response) 200) -1))
+
+  (let-values (((response body)
+                (http-request
+                  url
+                  #:method method
+                  #:body body
+                  #:version '(1 . 1)
+                  #:streaming? #f
+                  #:headers (filter identity
+                              (list
+                                (and content-type `(Content-Type . ,content-type))
+                                (and auth         `(Authorization . ,auth))))
+                  #:decode-body? #t)))
+    (if (response-ok? response)
+        (json-string->scm (utf8->string body))
+        (throw 'neocities (response-error response)))))
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