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(use-modules
  ((ice-9 match) #:prefix m:)
  ((srfi srfi-1) #:prefix s1:)
  ((xyz euandreh heredoc) #:prefix heredoc:)
  ((org euandre papo) #:prefix papo:)
  ((org euandre packages) #:prefix pkg:)
  ((org euandre queue) #:prefix q:)
  (gnu)
  (guix git-download)
  (guix packages)
  (guix transformations)
  (guix utils))
(use-package-modules)
(use-service-modules
  certbot
  cgit
  dns
  mail
  networking
  security
  shepherd
  ssh)
(heredoc:enable-syntax)



(define +working-dir+
  ;; src/guix/system.scm + ../../../ = ./
  (dirname (dirname (dirname (current-filename)))))

(define (path s)
  (pkg:str +working-dir+ "/" s))

(define +users+
  `(("andre"  "EuAndreh" ("wheel" "become-secrets-keeper") ,(path "src/keys/SSH/andre.pub.txt"))))

(define +alias-emails+ (map s1:first +users+))

(define file (compose string-trim-right pkg:slurp path))

(define +ipv4+        (file "src/config/ipv4.txt"))
(define +ipv6+        (file "src/config/ipv6.txt"))
(define +tld+         (file "src/config/tld.txt"))
(define +root-pubkey+ (file "src/config/root-pubkey.txt"))
(define +known-hosts+ (file "src/config/known-hosts.txt"))
(define +offsite-ssh+ (file "src/config/offsite-ssh.txt"))

(define +cert.pem+    (pkg:str "/etc/letsencrypt/live/" +tld+ "/cert.pem"))
(define +privkey.pem+ (pkg:str "/etc/letsencrypt/live/" +tld+ "/privkey.pem"))



(define (latest pkg)
  (let* ((name     (package-name pkg))
         (version  (file (pkg:fmt "src/versions/~a.txt" name)))
         (trans-fn (options->transformation
                    `((with-commit . ,(pkg:fmt "~a=~a" name version))))))
    (trans-fn pkg)))



(define package-symbols
  '())

(define package-records
  (list
   (latest pkg:binder)
   (latest pkg:glaze)
   (latest pkg:untls)
   (latest pkg:wscat)
   (latest papo:papo.im)
   (latest papo:chat.papo.im)))


(define binder-service-type
  (pkg:with-services-from-args
   pkg:binder-service-type
   pkg:<binder-configuration>; FIXME: /var/run/glaze/redirect/glaze.socket, etc
   '(((binder-http)  ("0.0.0.0:80"   "/var/run/glaze/redirect.socket"))
     ((binder-https) ("0.0.0.0:443"  "/var/run/untls/https.socket"))
     ((binder-ircs)  ("0.0.0.0:6697" "/var/run/untls/ircs.socket")))))

(define glaze-service-type
  (pkg:with-services-from-args
   pkg:glaze-service-type
   pkg:<glaze-configuration>
   '(((glaze-http)  ("-X" "/var/run/glaze/redirect.socket"))
     ((glaze-https) ("-P/ws:/var/run/wscat/wscat.socket"
                     ;; -P/git/*:/var/run/fcgiwrap.sock" FIXME
                     "-P/*:/var/lib/glaze/"
                     "/var/run/glaze/glaze.socket")))))

(define certs (list +cert.pem+ +privkey.pem+))
(define untls-service-type
  (pkg:with-services-from-args
   pkg:untls-service-type
   pkg:<untls-configuration>
   `(((untls-https) (,@certs
                     "/var/run/untls/https.socket"
                     "/var/run/glaze/glaze.socket"))
     ((untls-ircs)  (,@certs
                     "/var/run/untls/ircs.socket"
                     "/var/run/papod/papod.socket")))))

(define papod-service-type
 (pkg:service-type-for 'papod
                       papo:<papod-configuration>
                       (papo:papod-configuration)
                       '()))


(use-service-modules web)
(define simple-postfix-service-type
  (service-type
    (inherit q:internet-postfix-service-type)
    (extensions
      (filter (lambda (extension)
                (let ((target (service-extension-target extension)))
                  (not
                   (or
                     (eq? nginx-service-type   target)
                     (eq? certbot-service-type target)))))
              (service-type-extensions q:internet-postfix-service-type)))))



(operating-system
  (locale "fr_FR.UTF-8")
  (timezone "America/Sao_Paulo")
  (host-name +tld+)
  (skeletons pkg:skeletons)
  (users (append (pkg:user-accounts +users+) %base-user-accounts))
  (sudoers-file pkg:syskeep-sudoers-file)
  (packages (pkg:package-set package-symbols package-records))
  (services
    (append
     (list
      (service ntp-service-type)
      (service dhcp-client-service-type)
      (service fail2ban-service-type)
      (service binder-service-type
        (pkg:binder-configuration
          (package (latest pkg:binder))))
      (service glaze-service-type
        (pkg:glaze-configuration
          (package (latest pkg:glaze))))
      (service untls-service-type
        (pkg:untls-configuration
          (package (latest pkg:untls))))
      (service pkg:wscat-service-type
        (pkg:wscat-configuration
          (package (latest pkg:wscat))))
      (service papod-service-type
        (papo:papod-configuration
          (package (latest papo:papod))))
      (service knot-service-type
        (q:knot-zones-configuration +tld+ +ipv4+ +ipv6+))
      (service openssh-service-type
        (q:openssh-default-configuration
          (pkg:users->keys +users+)))
      (service pkg:syskeep-service-type
        (pkg:syskeep-configuration
          (tld +tld+)))
      (service pkg:git-service-type
        (pkg:git-configuration
          (export-all? #t)
          (run-server? #t)))
      (service q:shadow-group-service-type)
      (service q:dkimproxyout-service-type)
      (service q:cyrus-sasl-service-type)
      (service q:dovecot-service-type)
      (service simple-postfix-service-type)
      (simple-service 'host-specific-etc-file etc-service-type
        `(("id_rsa.pub"      ,(plain-file "id_rsa.pub"      +root-pubkey+))
          ("known_hosts"     ,(plain-file "known-hosts.txt" +known-hosts+))
          ("offsite-ssh.txt" ,(plain-file "offsite-ssh.txt" +offsite-ssh+))))
      (service mail-aliases-service-type
        `(("root"    "andre")
          ("contact" ,@+alias-emails+)
          ("info"    ,@+alias-emails+)
          ("support" ,@+alias-emails+))))
     pkg:base-services))
  (bootloader
    (bootloader-configuration
      (bootloader grub-bootloader)
      (targets '("/dev/vda"))))
  (file-systems
    (append
     (list
      (file-system
        (mount-point "/")
        (device
          (uuid "da72be6a-0c6b-4874-a57f-2046fcba13af" 'btrfs))
        (type "btrfs"))
      (file-system
        (mount-point "/mnt/production")
        (needed-for-boot? #t)
        (device
          (uuid "c50ad9fa-c7a1-49a1-93d2-6633f3cf929f" 'btrfs))
        (type "btrfs"))
      (file-system
        (mount-point "/mnt/backup")
        (device
          (uuid "d675e98c-3f48-44d1-b085-36c476d9313f" 'btrfs))
        (type "btrfs")))
     %base-file-systems))
  (swap-devices
    (list
     (swap-space
       ;; # rm -f /swapfile
       ;; # truncate -s 0 /swapfile
       ;; # chattr +C /swapfile
       ;; # fallocate -l 8G /swapfile
       ;; # chmod 600 /swapfile
       ;; # mkswap /swapfile
       ;; # swapon /swapfile
       (target "/swapfile")
       (dependencies
         (filter (file-system-mount-point-predicate "/")
                 file-systems)))
     (swap-space
       (target
         (uuid "fde5e4a8-acc2-4c9a-9712-5494724c2c04"))))))