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;;; SPDX-License-Identifier: GPL-3.0-or-later
;;; SPDX-FileCopyrightText: 2024-2026 Marek Paśnikowski <marek@marekpasnikowski.pl>

(define-module (deployment services web)
  #:export     (aisaka-certbot-service
                aisaka-nginx-service
                nginx-location-well-known
                nginx-service-type*)
  #:use-module (gnu services)
  #:use-module (gnu services web)
  #:use-module (guix gexp)
  #:use-module ((gnu packages matrix)
                #:prefix gnu:packages:matrix:)
  #:use-module ((gnu services certbot)
                #:prefix gnu:services:certbot:)
  #:use-module ((gnu system shadow)
                #:prefix gnu:system:shadow:)
  #:use-module ((sovereign system accounts)
                #:prefix sovereign:system:accounts:))

(define nginx-accounts
  (let
      ((accounts- (list sovereign:system:accounts:nginx-group
                        sovereign:system:accounts:nginx-account)))
    (const accounts-)))

(define nginx-extension-of-account
  (service-extension gnu:system:shadow:account-service-type
                     nginx-accounts))

(define (extend-account extension)
  (let*
      ((extension-target-      (service-extension-target extension))
       (account-service-type?- (eq? extension-target-
                                    gnu:system:shadow:account-service-type)))
    (if account-service-type?-
        nginx-extension-of-account
        extension)))

(define nginx-service-type*
  (let
      ((nginx-extensions- (service-type-extensions nginx-service-type)))
    (service-type
     (inherit    nginx-service-type)
     (extensions (map extend-account
                      nginx-extensions-)))))

(define nginx-location-proxy-guix
  (nginx-location-configuration
   (body (list "proxy_pass http://localhost:5232/ ;"
               "proxy_set_header X-Script-Name \"\" ;"
               "proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for ;"
               "proxy_set_header Host $http_host ;"
               "proxy_pass_header Authorization ;"))
   (uri  "/")))

(define nginx-location-proxy-matrix
  (nginx-location-configuration
   (body (list "proxy_pass http://localhost:8008 ;"
               "proxy_set_header X-Forwarded-For $remote_addr ;"
               "proxy_set_header X-Forwarded-Proto $scheme ;"
               "proxy_set_header Host $host:$server_port ;"
               "client_max_body_size 1024M ;"))
   (uri  "~ ^(/_matrix|/_synapse/client)")))

(define nginx-location-proxy-radicale
  (nginx-location-configuration
   (body (list "proxy_pass http://localhost:8080/ ;"
               "proxy_set_header X-Script-Name \"\" ;"
               "proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for ;"
               "proxy_set_header Host $http_host ;"
               "proxy_pass_header Authorization ;"))
   (uri  "/")))

(define nginx-location-proxy-auth
  (nginx-location-configuration
   (body (list "proxy_set_header Host $host;"
               "proxy_set_header X-Real-IP $remote_addr;"
               "proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;"
               "proxy_set_header X-Forwarded-Proto $scheme;"
               "if ($ssl_client_verify != SUCCESS) {return 403;}"))
   (uri  "/")))

(define nginx-location-well-known
  (nginx-location-configuration
   (body (list "root /srv/www/marek/marekpasnikowski.pl ;"))
   (uri  "/.well-known")))

(define nginx-location-well-known-matrix-client
  (nginx-location-configuration
   (body (list "return 200 '{\"m.homeserver\": {\"base_url\": \"https://matrix.marekpasnikowski.pl\"}}' ;"
               "default_type application/json ;"
               "add_header Access-Control-Allow-Origin * ;"))
   (uri  "/.well-known/matrix/client")))

(define nginx-server-guix
  (nginx-server-configuration
   (locations           (list nginx-location-proxy-guix))
   (listen              (list "192.168.10.2:443 ssl"))
   (server-name         (list "guix.marekpasnikowski.pl"))
   (ssl-certificate     "/etc/letsencrypt/live/marekpasnikowski.pl/fullchain.pem")
   (ssl-certificate-key "/etc/letsencrypt/live/marekpasnikowski.pl/privkey.pem")))

(define nginx-server-matrix
  (nginx-server-configuration
   (locations           (list nginx-location-proxy-matrix))
   (listen              (list "192.168.10.2:443 ssl"
                              "192.168.10.2:8448 ssl default_server"))
   (root                (file-append gnu:packages:matrix:synapse
                                     "/lib/python3.11/site-packages/synapse/static"))
   (server-name         (list "matrix.marekpasnikowski.pl"))
   (ssl-certificate     "/etc/letsencrypt/live/marekpasnikowski.pl/fullchain.pem")
   (ssl-certificate-key "/etc/letsencrypt/live/marekpasnikowski.pl/privkey.pem")
   (raw-content         (list "proxy_http_version 1.1 ;"))))

(define nginx-server-portal
  (nginx-server-configuration
   (locations           (list nginx-location-well-known
                              nginx-location-well-known-matrix-client))
   (listen              (list "192.168.10.2:443 ssl"))
   (root                "/home/marek/Publiczne/www")
   (server-name         (list 'default
                              "marekpasnikowski.pl"))
   (ssl-certificate     "/etc/letsencrypt/live/marekpasnikowski.pl/fullchain.pem")
   (ssl-certificate-key "/etc/letsencrypt/live/marekpasnikowski.pl/privkey.pem")))

(define nginx-server-radicale
  (nginx-server-configuration
   (locations   (list nginx-location-proxy-radicale
                      nginx-location-well-known))
   (listen      (list "192.168.10.2:443 ssl"))
   (server-name (list "radicale.marekpasnikowski.pl"))))

(define nginx-server-schron
  (nginx-server-configuration
   (locations           (list nginx-location-proxy-auth))
   (listen              (list "192.168.10.2:443 ssl"))
   (root                "/home/marek/Publiczne/schron")
   (server-name         (list "schron.marekpasnikowski.pl"))
   (ssl-certificate     "/etc/letsencrypt/live/marekpasnikowski.pl/fullchain.pem")
   (ssl-certificate-key "/etc/letsencrypt/live/marekpasnikowski.pl/privkey.pem")
   (raw-content         (list "ssl_client_certificate /secrets/ca/intermediate/certs/ca-chain.cert.pem;"
                              "ssl_verify_client on;"))))

(define nginx-server-sejf
  (nginx-server-configuration
   (locations           (list nginx-location-proxy-auth))
   (listen              (list "192.168.10.2:443 ssl"))
   (root                "/home/marek/Publiczne/sejf")
   (server-name         (list "sejf.marekpasnikowski.pl"))
   (ssl-certificate     "/etc/letsencrypt/live/marekpasnikowski.pl/fullchain.pem")
   (ssl-certificate-key "/etc/letsencrypt/live/marekpasnikowski.pl/privkey.pem")
   (raw-content         (list "ssl_client_certificate /secrets/ca/intermediate/certs/ca-chain.cert.pem;"
                              "ssl_verify_client on;"))))

(define nginx-server-test
  (nginx-server-configuration
   (locations           (list nginx-location-proxy-auth))
   (listen              (list "192.168.10.2:443 ssl"))
   (root                "/home/marek/Publiczne/schron")
   (server-name         (list "test.marekpasnikowski.pl"))
   (ssl-certificate     "/etc/letsencrypt/live/marekpasnikowski.pl/fullchain.pem")
   (ssl-certificate-key "/etc/letsencrypt/live/marekpasnikowski.pl/privkey.pem")
   (raw-content         (list "ssl_client_certificate /secrets/ca/intermediate/certs/ca-chain.cert.pem;"
                              "ssl_verify_client on;"))))

(define nginx-server-www
  (nginx-server-configuration
   (listen      (list "192.168.10.2:443 ssl"))
   (root        "/home/marek/Publiczne/www")
   (server-name (list "www.marekpasnikowski.pl"))))

(define nginx-configuration*
  (nginx-configuration
   (shepherd-requirement (list 'networking))
   (server-blocks        (list nginx-server-portal
                               nginx-server-www
                               nginx-server-guix
                               nginx-server-matrix
                               nginx-server-test
                               nginx-server-schron
                               nginx-server-sejf
                               nginx-server-radicale))))

(define aisaka-nginx-service
  (service nginx-service-type*
           nginx-configuration*))

(define nginx-extension-of-certbot
  (service-extension nginx-service-type*
                     (@@ (gnu services certbot)
                         certbot-nginx-server-configurations)))

(define (extend-certbot extension)
  (let*
      ((extension-target-    (service-extension-target extension))
       (nginx-service-type?- (eq? extension-target-
                                  nginx-service-type)))
    (if nginx-service-type?-
        nginx-extension-of-certbot
        extension)))

(define certbot-type
  (let
      ((certbot-extensions- (service-type-extensions gnu:services:certbot:certbot-service-type)))
    (service-type
     (inherit    gnu:services:certbot:certbot-service-type)
     (extensions (map extend-certbot
                      certbot-extensions-)))))

(define nginx-deploy-hook-file
  #~(let
        ((pid (call-with-input-file "/var/run/nginx/pid"
                read)))
      (kill pid
            SIGHUP)))

(define certificate-configuration
  (gnu:services:certbot:certificate-configuration
   (deploy-hook (program-file "nginx-deploy-hook"
                              nginx-deploy-hook-file))
   (domains     (list "marekpasnikowski.pl"
                      "git.marekpasnikowski.pl"
                      "guix.marekpasnikowski.pl"
                      "matrix.marekpasnikowski.pl"
                      "mx.marekpasnikowski.pl"
                      "radicale.marekpasnikowski.pl"
                      "schron.marekpasnikowski.pl"
                      "sejf.marekpasnikowski.pl"
                      "test.marekpasnikowski.pl"
                      "www.marekpasnikowski.pl"))))

(define certbot-configuration
  (gnu:services:certbot:certbot-configuration
   (certificates (list certificate-configuration))
   (email        "marek@marekpasnikowski.pl")
   (webroot      "/srv/www/marek/marekpasnikowski.pl")))

(define aisaka-certbot-service
  (service certbot-type
           certbot-configuration))

;;; EOF