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;;; http.scm -- HTTP API
;;; Copyright © 2016 Mathieu Lirzin <mthl@gnu.org>
;;;
;;; This file is part of Cuirass.
;;;
;;; Cuirass is free software: you can redistribute it and/or modify
;;; it under the terms of the GNU General Public License as published by
;;; the Free Software Foundation, either version 3 of the License, or
;;; (at your option) any later version.
;;;
;;; Cuirass is distributed in the hope that it will be useful,
;;; but WITHOUT ANY WARRANTY; without even the implied warranty of
;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
;;; GNU General Public License for more details.
;;;
;;; You should have received a copy of the GNU General Public License
;;; along with Cuirass. If not, see <http://www.gnu.org/licenses/>.
(define-module (cuirass http)
#:use-module (cuirass database)
#:use-module (cuirass utils)
#:use-module (ice-9 hash-table)
#:use-module (ice-9 match)
#:use-module (json)
#:use-module (web request)
#:use-module (web response)
#:use-module (web server)
#:use-module (web uri)
#:export (spec->json-string
run-cuirass-server))
;;;
;;; JSON format.
;;;
(define (object->json-scm obj)
"Prepare OBJ for JSON usage."
(cond ((string? obj) obj)
((number? obj) obj)
((boolean? obj) obj)
((null? obj) obj)
((symbol? obj) (symbol->string obj))
((keyword? obj) (object->json-scm (keyword->symbol obj)))
((alist? obj) (alist->hash-table (map object->json-scm obj)))
((pair? obj) (cons (object->json-scm (car obj))
(object->json-scm (cdr obj))))
(else (object->string obj))))
(define* (spec->json-string spec #:key pretty)
"Return SPEC as a JSON object."
(scm->json-string (object->json-scm spec) #:pretty pretty))
;;;
;;; Web server.
;;;
(define (request-path-components request)
(split-and-decode-uri-path (uri-path (request-uri request))))
(define (not-found request)
(values (build-response #:code 404)
(string-append "Resource not found: "
(uri->string (request-uri request)))))
(define (url-handler request body)
(match (request-path-components request)
(((or "jobsets" "specifications") . rest)
(values '((content-type . (application/json)))
(with-database db
(spec->json-string (car (db-get-specifications db))))))
(_ (not-found request))))
(define (run-cuirass-server)
(run-server url-handler))
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