#+TITLE: =systemd= services and timers
#+SETUPFILE: ./setup/org-setup-file.org

https://www.digitalocean.com/community/tutorials/how-to-use-systemctl-to-manage-systemd-services-and-units

* =bukugit= - Automatic commit and push new bookmarks
** Service
:PROPERTIES:
:header-args: :tangle ~/.config/systemd/user/bukugit.service
:header-args+: :comments both :mkdirp yes
:END:

#+BEGIN_SRC conf
  [Unit]
  Description=Sync Bookmarks every day
  RefuseManualStart=no
  RefuseManualStop=yes

  [Service]
  Type=oneshot
  ExecStart=%h/.local/bin/buku_git_push
#+END_SRC

** Timer
:PROPERTIES:
:header-args: :tangle ~/.config/systemd/user/bukugit.timer
:header-args+: :comments both :mkdirp yes
:END:

#+BEGIN_SRC conf
  [Unit]
  Description=Sync All Mails every x hours
  RefuseManualStart=no
  RefuseManualStop=no
  Wants=network-online.target
  After=network-online.target

  [Timer]
  OnCalendar=*-*-* 16:00:00
  Persistent=true
  Unit=bukugit.service

  [Install]
  WantedBy=default.target
#+END_SRC

** Script
:PROPERTIES:
:header-args:  :tangle ~/.local/bin/buku_git_push
:header-args+: :comments both :mkdirp yes
:header-args+: :shebang "#!/usr/bin/env bash"
:END:

#+begin_src bash
  cd ~/.local/share/buku/

  if [[ ! -z $(git status -s bookmarks.db) ]]
  then
      rm bookmarks.org;
      buku -e bookmarks.org && \
          cat header.org bookmarks.org > index.org && \
          emacs index.org --batch -f org-html-export-to-html --kill && \
          git add index.html

      git add bookmarks.db && \
          git commit -m "Changed bookmarks - $(date +%F)" && \
          git push
      exit
  fi
#+end_src

* =braingit= - Automatic commit and push new brain pages
** Service
:PROPERTIES:
:header-args: :tangle ~/.config/systemd/user/braingit.service
:header-args+: :comments both :mkdirp yes
:END:

#+BEGIN_SRC conf
  [Unit]
  Description=Sync Brain Website everyday
  RefuseManualStart=no
  RefuseManualStop=yes

  [Service]
  Type=oneshot
  ExecStart=%h/.local/bin/brain_git_push
#+END_SRC

** Timer
:PROPERTIES:
:header-args: :tangle ~/.config/systemd/user/braingit.timer
:header-args+: :comments both :mkdirp yes
:END:

#+BEGIN_SRC conf
  [Unit]
  Description=Sync Brain Website everyday
  RefuseManualStart=no
  RefuseManualStop=no
  Wants=network-online.target
  After=network-online.target

  [Timer]
  OnCalendar=*-*-* 16:00:00
  Persistent=true
  Unit=braingit.service

  [Install]
  WantedBy=default.target
#+END_SRC

** Script
:PROPERTIES:
:header-args:  :tangle ~/.local/bin/brain_git_push
:header-args+: :comments both :mkdirp yes
:header-args+: :shebang "#!/usr/bin/env bash"
:END:

#+begin_src bash
  cd ~/Cloud/brain-website/

  if [[ ! -z $(git status -s content/) ]]
  then
      git add content static && \
          git commit -m "Update Content - $(date +%F)" && \
          git push
      exit
  fi
#+end_src
* =checkmail= - Check new mails
** Service
:PROPERTIES:
:header-args: :tangle ~/.config/systemd/user/checkmail.service
:header-args+: :comments both :mkdirp yes
:END:

#+BEGIN_SRC conf
  [Unit]
  Description=Check new mails
  RefuseManualStart=no
  RefuseManualStop=yes

  [Service]
  Type=oneshot
  ExecStart=%h/.local/bin/checkmail -q
#+END_SRC

** Timer
:PROPERTIES:
:header-args: :tangle ~/.config/systemd/user/checkmail.timer
:header-args+: :comments both :mkdirp yes
:END:

#+BEGIN_SRC conf
  [Unit]
  Description=Check Mail every x minutes
  RefuseManualStart=no
  RefuseManualStop=no
  Wants=network-online.target
  After=network-online.target
  Requires=checkmail.service

  [Timer]
  Persistent=false
  OnBootSec=2min
  OnUnitActiveSec=5min
  AccuracySec=2min
  Unit=checkmail.service

  [Install]
  WantedBy=default.target
#+END_SRC

** Script
:PROPERTIES:
:header-args:  :tangle ~/.local/bin/checkmail
:header-args+: :comments both :mkdirp yes
:header-args+: :shebang "#!/usr/bin/env bash"
:END:

#+begin_src bash
  while [ -n "$1" ]; do # while loop starts
      case "$1" in
      -a) opt_all='--all' ;; # Check All inboxes
      -v) opt_verbose='--verbose' ;; # Verbose
      -q) opt_quiet='--quiet' ;; # Quiet
      ,*) echo "Option $1 not recognized" ;; # In case you typed a different option
      esac
      shift
  done


  # =============================================================
  # Count number of mails
  gmail_old="$(ls ~/.mail/gmail/Inbox/new | wc -l)"
  esrf_old="$(ls ~/.mail/esrf/Inbox/new | wc -l)"
  ulg_old="$(ls ~/.mail/ulg/Inbox/new | wc -l)"
  uliege_old="$(ls ~/.mail/uliege/Inbox/new | wc -l)"
  # =============================================================

  # =============================================================
  # Retreive mails
  mbsync $opt_all $opt_verbose gmail-Home esrf-Home ulg-Home uliege-Home 2>/tmp/mbsync.log
  # =============================================================

  # =============================================================
  # Count number of mails
  gmail_new="$(ls ~/.mail/gmail/Inbox/new | wc -l)"
  esrf_new="$(ls ~/.mail/esrf/Inbox/new | wc -l)"
  ulg_new="$(ls ~/.mail/ulg/Inbox/new | wc -l)"
  uliege_new="$(ls ~/.mail/uliege/Inbox/new | wc -l)"
  # =============================================================

  # =============================================================
  # Total Number of new mails since last checking
  new="$(($gmail_new+$esrf_new+$ulg_new+$uliege_new))"
  old="$(($gmail_old+$esrf_old+$ulg_old+$uliege_old))"
  # =============================================================

  # =============================================================
  # Notification
  if [ "$new" -gt 0 ]; then
    dunstify --replace=98465 'Mails ' "$(($gmail_new+$esrf_new+$ulg_new+$uliege_new)) new mail(s)"
  fi
  # =============================================================

  # =============================================================
  # Indexation and Tags
  if pgrep -f 'mu server'; then
      emacsclient --eval '(mu4e-update-index)'
  else
      mu index $opt_verbose $opt_quiet
  fi
  # =============================================================
#+end_src

* =syncmail= - Synchronize all mails
** Service
:PROPERTIES:
:header-args: :tangle ~/.config/systemd/user/syncmail.service
:header-args+: :comments both :mkdirp yes
:END:

#+BEGIN_SRC conf
  [Unit]
  Description=Sync all mails
  RefuseManualStart=no
  RefuseManualStop=yes

  [Service]
  Type=oneshot
  ExecStart=%h/.local/bin/checkmail -a -q
#+END_SRC

** Timer
:PROPERTIES:
:header-args: :tangle ~/.config/systemd/user/syncmail.timer
:header-args+: :comments both :mkdirp yes
:END:

#+BEGIN_SRC conf
  [Unit]
  Description=Sync All Mails every x hours
  RefuseManualStart=no
  RefuseManualStop=no
  Wants=network-online.target
  After=network-online.target
  Requires=syncmail.service

  [Timer]
  Persistent=false
  OnBootSec=30min
  OnUnitActiveSec=300min
  AccuracySec=10min
  Unit=syncmail.service

  [Install]
  WantedBy=default.target
#+END_SRC

* =vdirsyncer= - Synchronize calendar and contacts
** Service
:PROPERTIES:
:header-args: :tangle ~/.config/systemd/user/vdirsyncer.service
:header-args+: :comments both :mkdirp yes
:END:

#+begin_src conf
  [Unit]
  Description=Synchronize calendars and contacts
  Documentation=https://vdirsyncer.readthedocs.org/
  Wants=network-online.target
  After=network-online.target

  [Service]
  ExecStart=/usr/bin/vdirsyncer --verbosity "ERROR" sync
  Type=oneshot
#+end_src

** Timer
:PROPERTIES:
:header-args: :tangle ~/.config/systemd/user/vdirsyncer.timer
:header-args+: :comments both :mkdirp yes
:END:

#+begin_src conf
  [Unit]
  Description=Synchronize vdirs

  [Timer]
  OnBootSec=5m
  OnUnitActiveSec=15m
  AccuracySec=5m

  [Install]
  WantedBy=timers.target
#+end_src

* =ssh-agent= - SSH Agent
** Service
:PROPERTIES:
:header-args: :tangle ~/.config/systemd/user/ssh-agent.service
:header-args+: :comments both :mkdirp yes
:END:

#+begin_src conf
  [Unit]
  Description=SSH key agent

  [Service]
  Type=simple
  Environment=SSH_AUTH_SOCK=%t/ssh-agent.socket
  ExecStart=/usr/bin/ssh-agent -D -a $SSH_AUTH_SOCK

  [Install]
  WantedBy=default.target
#+end_src

* =powertop= - Powertop
** Service
:PROPERTIES:
:header-args: :tangle ~/.config/systemd/user/powertop.service
:header-args+: :comments both :mkdirp yes
:END:
#+begin_src conf
  [Unit]
  Description=Powertop tunings

  [Service]
  ExecStart=/usr/bin/powertop --auto-tune
  RemainAfterExit=true

  [Install]
  WantedBy=multi-user.target
#+end_src