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;;; Guile-Git --- GNU Guile bindings of libgit2
;;; Copyright © 2015 David Thompson <davet@gnu.org>
;;; Copyright © 2016 Amirouche <amirouche@hypermove.net>
;;; Copyright © 2016 Erik Edrosa <erik.edrosa@gmail.com>
;;;
;;; This file is part of Guile-Git.
;;;
;;; Guile-Git 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.
;;;
;;; Guile-Git 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 Guile-Git. If not, see <http://www.gnu.org/licenses/>.
(define-module (git web)
#:use-module (git web html)
#:use-module (git web mime-types)
#:use-module (git web querystring)
#:use-module (git web http)
#:use-module (git web repository)
#:use-module (git web template)
#:use-module (git web config)
#:use-module (git bindings)
#:use-module (git repository)
#:use-module (ice-9 binary-ports)
#:use-module (ice-9 format)
#:use-module (ice-9 ftw)
#:use-module (ice-9 match)
#:use-module (ice-9 popen)
#:use-module (ice-9 rdelim)
#:use-module (rnrs bytevectors)
#:use-module (srfi srfi-1)
#:use-module (srfi srfi-26)
#:use-module (sxml simple)
#:use-module (web request)
#:use-module (web response)
#:use-module (web server)
#:use-module (web uri)
#:export (run-gitweb))
(define (request-path-components request)
"Split the URI path of REQUEST into a list of component strings. For
example: \"/foo/bar\" yields '(\"foo\" \"bar\")."
(split-and-decode-uri-path (uri-path (request-uri request))))
(define (render-html sxml)
(values '((content-type . (text/html)))
(lambda (port)
(sxml->html sxml port))))
(define (not-found uri)
(values (build-response #:code 404)
(string-append "Resource not found: " uri)))
(define (redirect uri)
(values (build-response #:code 303 #:headers `((Location . ,uri))) ""))
(define (error)
(values (build-response #:code 500)
"Server error"))
;;;
;;; static assets rendering
;;;
(define (directory? filename)
(string=? filename (dirname filename)))
(define (render-static-asset path)
(let ((filename (string-join (cons* (static-dir) "static" path) "/")))
(if (and (file-exists? filename) (not (directory? filename)))
(values `((content-type ,(mime-type filename)))
(call-with-input-file filename get-bytevector-all))
(not-found (string-join (cons "static" path) "/" 'prefix)))))
;;; route context
(define (make-context request body)
"Create a route context"
(let ((context `((request . ,request))))
(let ((context (if body (acons 'POST (querystring body) context) context)))
(if (uri-query (request-uri request))
(acons 'GET (querystring (string->utf8 (uri-query (request-uri request)))) context)
context))))
(define (context-post context key)
"Get KEY from CONTEXT"
(assoc-ref (assoc-ref context 'POST) key))
(define (context-get context key)
"Get KEY from CONTEXT"
(assoc-ref (assoc-ref context 'GET) key))
(define (context-method context)
"get request method from CONTEXT"
(request-method (assoc-ref context 'request)))
(define (render-repo-list)
(define (description repo)
"no description")
(define (valid-repo? name)
(openable-repository? (string-append (repository-dir) "/" name)))
(define (render-repo-div repo)
`(a (@ (href ,(string-append "/" repo)))
(h3 ,repo)
(p ,(description repo))))
(let ((maybe-repos (scandir (repository-dir))))
`(div (@ (class "repositories"))
,(map render-repo-div (filter valid-repo? maybe-repos)))))
(define (render-index)
(respond (render-repo-list)
#:title "guile git"
#:template (cut main-template <> <> "index")))
(define (handler request body)
(let ((context (make-context request body)))
(match (request-path-components request)
(() (render-index))
(("static" path ...) (render-static-asset path))
((repo path ...) (repo-handler repo path))
(_ (render-static-asset (list "index.html"))))))
(define* (run-gitweb #:key (port 8080))
(format #t "server running on http://localhost:~d" port)
(newline)
(libgit2-init!)
(run-server (lambda args (apply handler args))
'http `(#:port , port)))
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