;;; GNU Guix --- Functional package management for GNU
;;; Copyright © 2017, 2018 Oleg Pykhalov <go.wigust@gmail.com>
;;; Copyright © 2017-2018, 2020-2022 Ludovic Courtès <ludo@gnu.org>
;;; Copyright © 2017, 2018 Clément Lassieur <clement@lassieur.org>
;;; Copyright © 2018 Christopher Baines <mail@cbaines.net>
;;;
;;; This file is part of GNU Guix.
;;;
;;; GNU Guix 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.
;;;
;;; GNU Guix 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 GNU Guix.  If not, see <http://www.gnu.org/licenses/>.

(define-module (gnu tests version-control)
  #:use-module (gnu tests)
  #:use-module (gnu system)
  #:use-module (gnu system file-systems)
  #:use-module (gnu system shadow)
  #:use-module (gnu system vm)
  #:use-module (gnu services)
  #:use-module (gnu services version-control)
  #:use-module (gnu services cgit)
  #:use-module (gnu services ssh)
  #:use-module (gnu services web)
  #:use-module (gnu services networking)
  #:use-module (gnu packages version-control)
  #:use-module (gnu packages ssh)
  #:use-module (guix gexp)
  #:use-module (guix store)
  #:use-module (guix modules)
  #:export (%test-cgit
            %test-git-http
            %test-gitolite
            %test-gitile))

(define README-contents
  "Hello!  This is what goes inside the 'README' file.")

(define %make-git-repository
  ;; Create Git repository in /srv/git/test.
  (with-imported-modules (source-module-closure
                          '((guix build utils)))
    #~(begin
        (use-modules (guix build utils))

        (let ((git (string-append #$git "/bin/git")))
          (mkdir-p "/tmp/test-repo")
          (with-directory-excursion "/tmp/test-repo"
            (call-with-output-file "/tmp/test-repo/README"
              (lambda (port)
                (display #$README-contents port)))
            (invoke git "config" "--global" "user.email" "charlie@example.org")
            (invoke git "config" "--global" "user.name" "A U Thor")
            (invoke git "init")
            (invoke git "add" ".")
            (invoke git "commit" "-m" "That's a commit."))

          (mkdir-p "/srv/git")
          (rename-file "/tmp/test-repo/.git" "/srv/git/test")
          (with-output-to-file "/srv/git/test/git-daemon-export-ok"
            (lambda _
              (display "")))))))

(define %test-repository-service
  ;; Service that creates /srv/git/test.
  (simple-service 'make-git-repository activation-service-type
                  %make-git-repository))

(define %cgit-configuration-nginx
  (list
   (nginx-server-configuration
    (root cgit)
    (locations
     (list
      (nginx-location-configuration
       (uri "@cgit")
       (body '("fastcgi_param SCRIPT_FILENAME $document_root/lib/cgit/cgit.cgi;"
               "fastcgi_param PATH_INFO $uri;"
               "fastcgi_param QUERY_STRING $args;"
               "fastcgi_param HTTP_HOST $server_name;"
               "fastcgi_pass 127.0.0.1:9000;")))))
    (try-files (list "$uri" "@cgit"))
    (listen '("19418"))
    (ssl-certificate #f)
    (ssl-certificate-key #f))))

(define %cgit-os
  ;; Operating system under test.
  (let ((base-os
         (simple-operating-system
          (service dhcp-client-service-type)
          (service cgit-service-type
                   (cgit-configuration
                    (nginx %cgit-configuration-nginx)))
          %test-repository-service)))
    (operating-system
      (inherit base-os)
      (packages (cons* git
                       (operating-system-packages base-os))))))

(define* (run-cgit-test #:optional (http-port 19418))
  "Run tests in %CGIT-OS, which has nginx running and listening on
HTTP-PORT."
  (define os
    (marionette-operating-system
     %cgit-os
     #:imported-modules '((gnu services herd)
                          (guix combinators))))

  (define vm
    (virtual-machine
     (operating-system os)
     (port-forwardings `((8080 . ,http-port)))))

  (define test
    (with-imported-modules '((gnu build marionette))
      #~(begin
          (use-modules (srfi srfi-11) (srfi srfi-64)
                       (gnu build marionette)
                       (web uri)
                       (web client)
                       (web response))

          (define marionette
            (make-marionette (list #$vm)))

          (test-runner-current (system-test-runner #$output))
          (test-begin "cgit")

          ;; XXX: Shepherd reads the config file *before* binding its control
          ;; socket, so /va