;;; GNU Guix --- Functional package management for GNU
;;; Copyright © 2017, 2020-2021, 2023 Ludovic Courtès <ludo@gnu.org>
;;; Copyright © 2017, 2019 Christopher Baines <mail@cbaines.net>
;;; Copyright © 2017, 2018 Clément Lassieur <clement@lassieur.org>
;;; Copyright © 2018 Pierre-Antoine Rouby <pierre-antoine.rouby@inria.fr>
;;; Copyright © 2018 Marius Bakke <mbakke@fastmail.com>
;;;
;;; 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 web)
  #: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 web)
  #:use-module (gnu services databases)
  #:use-module (gnu services getmail)
  #:use-module (gnu services networking)
  #:use-module (gnu services shepherd)
  #:use-module (gnu services mail)
  #:use-module (gnu packages databases)
  #:use-module (gnu packages guile-xyz)
  #:use-module (gnu packages patchutils)
  #:use-module (gnu packages python)
  #:use-module (gnu packages tls)
  #:use-module (gnu packages web)
  #:use-module (guix packages)
  #:use-module (guix modules)
  #:use-module (guix records)
  #:use-module (guix gexp)
  #:use-module (guix store)
  #:use-module (guix utils)
  #:use-module (ice-9 match)
  #:export (%test-httpd
            %test-nginx
            %test-varnish
            %test-php-fpm
            %test-hpcguix-web
            %test-tailon
            %test-patchwork
            %test-agate))

(define %index.html-contents
  ;; Contents of the /index.html file.
  "Hello, guix!")

(define %make-http-root
  ;; Create our server root in /srv.
  #~(begin
      (mkdir "/srv")
      (mkdir "/srv/http")
      (call-with-output-file "/srv/http/index.html"
        (lambda (port)
          (display #$%index.html-contents port)))))

(define retry-on-error
  #~(lambda* (f #:key times delay)
      (let loop ((attempt 1))
        (match (catch
                 #t
                 (lambda ()
                   (cons #t
                         (f)))
                 (lambda args
                   (cons #f
                         args)))
          ((#t . return-value)
           return-value)
          ((#f . error-args)
           (if (>= attempt times)
               error-args
               (begin
                 (sleep delay)
                 (loop (+ 1 attempt)))))))))

(define* (run-webserver-test name test-os #:key (log-file #f) (http-port 8080))
  "Run tests in %NGINX-OS, which has nginx running and listening on
HTTP-PORT."
  (define os
    (marionette-operating-system
     test-os
     #:imported-modules '((gnu services herd)
                          (guix combinators))))

  (define forwarded-port 8080)

  (define vm
    (virtual-machine
     (operating-system os)
     (port-forwardings `((,http-port . ,forwarded-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 #$output))
          (test-begin #$name)

          (test-assert #$(string-append name " service running")
            (marionette-eval
             '(begin
                (use-modules (gnu services herd))
                (match (start-service '#$(string->symbol name))
                  (#f #f)
                  (('service response-parts ...)
                   (match (assq-ref response-parts 'running)
                     ((#t) #t)
                     ((pid) (number? pid))))))
             marionette))

          (test-assert "HTTP port ready"
            (wait-for-tcp-port #$forwarded-port marionette))

          ;; Retrieve the index.html file we put in /srv.
          (test-equal "http-get"
            '(200 #$%index.html-contents)
            (let-values
                (((response text)
                  (http-get #$(simple-format
                               #f "http://localhost:~A/index.html" forwarded-port)
                            #:decode-body? #t)))
              (list (response-code response) text)))

          #$@(if log-file
                 `((test-assert ,(string-append "log file exists " log-file)
                     (marionette-eval
                      '(file-exists? ,log-file)
                      marionette)))
                 '())

          (test-end))))

  (gexp->derivation (string-append name "-test") test))


;;;
;;; HTTPD
;;;

(define %httpd-os
  (simple-operating-system
   (service dhcp-client-service-type)
   (service httpd-service-type
            (httpd-configuration
             (config
              (httpd-config-file
               (listen '("8080"))))))
   (simple-service 'make-http-root activation-service-type
                   %make-http-root)))

(define %test-httpd
  (system-test
   (name "httpd")
   (description "Connect to a running HTTPD server.")
   (value (run-webserver-test name %httpd-os
                              #:log-file "/var/log/httpd/error_log"))))


;;;
;;; NGINX
;;;

(define %nginx-servers
  ;; Server blocks.
  (list (nginx-server-configuration
         (listen '("8080")))))

(define %nginx