#+TITLE: pomm.el

Yet another implementation of a [[https://en.wikipedia.org/wiki/Pomodoro_Technique][pomodoro timer]] for Emacs.

[[./img/screenshot.png]]

This particular package features:
- Managing the timer with the excellent [[https://github.com/magit/transient/blob/master/lisp/transient.el][transient.el]].
- Persistent state between Emacs sessions.
  The timer state isn't reset if you close Emacs. Also, the state file can be synchronized between machines.
- History.
  I've implemented an option to store the timer history to a CSV file. Eventually I want to join this with [[https://activitywatch.net/][other activity data]] to see if the state of the timer actually changes how I use the computer.

None of the available [[*Alternatives][alternatives]] were doing quite what I wanted, and the idea of the timer is quite simple, so I figured I'd implement one myself.

* Installation
While the package is available only in this repository, one way to install is to clone the repository, add the package to the =load-path= and load it with =require=:
#+begin_src emacs-lisp
(require 'pomm)
#+end_src

My preferred way is =use-package= with =straight.el=:
#+begin_src emacs-lisp
(use-package pomm
  :straight (:host github :repo "SqrtMinusOne/pomm.el")
  :commands (pomm))
#+end_src

The package requires Emacs 27.1 because the time API of the previous versions is kinda crazy and 27.1 has =time-convert=.
* Usage
Run =M-x pomm= to open the transient buffer.

The listed commands are rather self-descriptive and match the Pomodoro ideology.

The timer can have 3 states:
- *Stopped*. Can be started with "s" or =M-x pomm-start=. A new iteration of the timer will be started.
- *Paused*. Can be continuted with "s" / =M-x pomm-start= or stopped competely with "S" / =M-x pomm-stop=.
- *Running*. Can be paused with "p" / =M-x pomm-pause= or stopped with "S" / =M-x pomm-stop=.

The state of the timer can be reset with "R" or =M-x pomm-reset=.

"U" updates the transient buffer. The update is manual because I didn't figure out how to automate this, and I think this is not /really/ necessary.

* Customization
Some settings are available in the transient buffer, but you can customize the relevant variables to make them permanent. Check =M-x customize-group= =pomm= for more information.

** Alerts
The package sends alerts via =alert.el=. The default style of alert is a plain =message=, but if you want an actual notification, set =alert-default-style= accordingly:
#+begin_src emacs-lisp
(setq alert-default-style 'libnotify)
#+end_src

** Modeline
If you want the timer to display in the modeline, activate the =pomm-mode-line-mode= minor mode.

** Polybar module
If you want to display the Pomodoro status in something like polybar, you can add the following lines to your config:
#+begin_src emacs-lisp
(add-hook 'pomm-on-tick-hook 'pomm-update-mode-line-string)
(add-hook 'pomm-on-status-changed-hook 'pomm-update-mode-line-string)
#+end_src

Create a script like this:
#+begin_src bash
if ps -e | grep emacs >> /dev/null; then
    emacsclient --eval "(if (boundp 'pomm-current-mode-line-string) pomm-current-mode-line-string \"\") " | xargs echo -e
fi
#+end_src

And add a polybar module definition to your polybar config:
#+begin_src conf-windows
[module/pomm]
type = custom/script
exec = /home/pavel/bin/polybar/pomm.sh
interval = 1
#+end_src

** State file location
The package stores the current state to a file by the path =pomm-state-file-location=, which is =emacs.d/pomm= by default. Set it to wherever you like.
** History
If you set the =pomm-csv-history-file= variable, the package will write CSV with the usage history there. Just keep in mind that the parent directory has to exist.

The file has the following columns:
- =timestamp=
- =status= (=stopped=, =paused= or =running=, according to the [[*Usage][usage]] section)
- =kind= (=work=, =short-break=, =long-break= or =nil=)
- =iteration=

A new entry is written after a particular state of the timer comes into being.

* Alternatives
There is a number of packages with a similar purpose, here is a rough comparison of features:
| Package                | 3rd party integrations | Control method (1)             | Persistent history       | Persistent state                             | Notifications             |
|------------------------+------------------------+--------------------------------+--------------------------+----------------------------------------------+---------------------------|
| [[https://github.com/SqrtMinusOne/pomm.el][pomm.el]]                | -                      | transient.el                   | CSV                      | +                                            | alert.el                  |
| [[https://github.com/marcinkoziej/org-pomodoro/tree/master][org-pomodoro]]           | Org Mode!              | via Org commands               | via Org mode             | -                                            | alert.el + sounds         |
| [[https://github.com/TatriX/pomidor/][pomidor]]                | -                      | self-cooked interactive buffer | custom delimited format? | +, but on-demand                             | alert.el                  |
| [[https://github.com/baudtack/pomodoro.el/][pomodoro.el]]            | -                      | -                              | -                        | -                                            | notifications.el + sounds |
| [[https://github.com/konr/tomatinho/][tomatinho]]              | -                      | self-cooked interactive buffer | -                        | -                                            | message + sounds          |
| [[https://github.com/ferfebles/redtick][redtick]]                | -                      | mode-line icon                 | +                        | -                                            | sounds                    |
| [[https://github.com/abo-abo/gtk-pomodoro-indicator][gtk-pomodoro-indicator]] | GTK panel              | CLI                            | -                        | -, but the program is independent from Emacs | GTK notifications         |
Be sure to check those out if this one doesn't quite fit your workflow!

(1) Means of timer control with exception of Emacs interactive commands

* P.S.
The package name is not an abbreviation. I just hope it doesn't mean something horrible in some language I don't know.