pomodoro.sh

#!/bin/sh

# pomodoro.sh to play a sound after pomodoro finished
# set update frequency to 0 to don't display updates
# In that case send a USR1 signal to the process if you want to see the elapsed time

# The script will update you slack status if slack token set
# You can set slack token by setting the SLACK_TOKEN env var
# Or put the token into a gpg encrypted file to $HOME/.secret/slack_token.gpg
# You can override that path by setting the SLACK_TOKEN_FILE_PATH env var

DEFAULT_MINUTES=25
NOTIFY_SEND="/usr/bin/notify-send"
DUNSTIFY="$HOME/bin/dunstify"
DEFAULT_SOUND="/usr/share/sounds/purple/alert.wav"
MINUTES=${POMODORO_MINUTES:-$DEFAULT_MINUTES}
SOUND=${POMODORO_SOUND:-$DEFAULT_SOUND}
DEFAULT_SLACK_TOKE_FILE_PATH="$HOME/.secret/slack_token.gpg"
SLACK_TOKEN_FILE_PATH=${POMODORO_SLACK_TOKEN_FILE_PATH:-$DEFAULT_SLACK_TOKE_FILE_PATH}
DEFAULT_SLACK_EMOJI=":tomato:"
DEFAULT_SLACK_STATUS_TEXT=""
SLACK_EMOJI=${POMODORO_SLACK_EMOJI:-$DEFAULT_SLACK_EMOJI}
SLACK_STATUS_TEXT=${POMODORO_SLACK_STATUS_TEXT:-$DEFAULT_SLACK_STATUS_TEXT}

DEFAULT_SLACK_STATUS_EMOJI=""
DEFAULT_SLACK_STATUS_TEXT=""

QUIET=0
DURATION=0

start=$(date -u +%s)

help() {
	echo "pomodoro.sh"
	echo
	echo "Options:"
	echo "  -m minutes Duration of the pomodoro session in minutes ($DEFAULT_MINUTES is the default)"
	echo "  -a alarm_sound_file played after pomodoro finished ($DEFAULT_SOUND is the default)"
	echo "  -q Don't show elapsed time"
	echo "  -h Show this help"
	echo
	echo "Signals:"
	echo "  Send an USR1 to print elapsed time (useful if -q is used)"
	echo
	echo "Some of the parameters can be configured with environment variables:"
	echo "  POMODORO_MINUTES Same as -m option. Duration of the pomodoro session in minutes"
	echo "  POMODORO_SOUND Same as -a option. Sound file played after pomodoro finished"
	echo "  POMODORO_SLACK_TOKEN_FILE_PATH Path to a gpg encrypted file which content is your slack token"
	echo "  POMODORO_SLACK_EMOJI An emoji as text which should be shown when you are doing in a pomodoro session"
	echo "  POMODORO_SLACK_STATUS_TEXT Status message shown during pomodoro session"
	echo
	echo "Usage $0 [-m minutes] [-a sound_file.wav] [-q]"
}

get_time_string() {
	dt=$1
	local ds=$((dt % 60))
	local dm=$(((dt / 60) % 60))
	local dh=$((dt / 3600))
	printf '%d:%02d:%02d' $dh $dm $ds
}

show_elapsed_time() {
	local elapsed=$(($(date -u +%s) - $start))
	dt=$(($DURATION - $elapsed))
	remaining=$(get_time_string "$dt")

	echo -n "\r$remaining"
}

slack_call() {
	if [ -z "$SLACK_TOKEN" ];then
		return 0
	fi
	api=$1
	data=$2
	url="https://slack.com/api/$api"

	if [ -z "$data" ];then
		curl -s -H 'Content-Type: application/json; charset=utf-8' -H "Authorization: Bearer $SLACK_TOKEN" $url
	else
		curl -s -H 'Content-Type: application/json; charset=utf-8' -H "Authorization: Bearer $SLACK_TOKEN" -d "$data" $url
	fi
}

set_slack_status() {
	emoji=$1
	status_text=$2
	if [ -z "$emoji" ];then
		data='{"profile": {"status_text": "'$DEFAULT_SLACK_STATUS_TEXT'", "status_emoji": "'$DEFAULT_SLACK_STATUS_EMOJI'"}}'
	else
		data='{"profile": {"status_emoji": "'$emoji'", "status_text": "'$status_text'"}}'
	fi

	slack_call 'users.profile.set' "$data" > /dev/null
}

set_slack_snooze() {
	minutes=$1
	slack_call "dnd.setSnooze?num_minutes=$minutes" > /dev/null
}

get_slack_status() {
	local STATUS="$(slack_call 'users.profile.get' | jq -r '.profile.status_emoji, .profile.status_text')"
	DEFAULT_SLACK_STATUS_TEXT=$(echo $STATUS | cut -d ' ' -f 2)
	DEFAULT_SLACK_STATUS_EMOJI=$(echo $STATUS | cut -d ' ' -f 1)
}

stop_pomodoro() {
	echo "stopping"
	aplay -q $SOUND

	echo
	date
	MSG="Pomodoro finished, take a break!"
	echo $MSG

	if [ -e "$DUNSTIFY" ];then
		$DUNSTIFY -p -a "$0" -u normal "$MSG"
	else
		$NOTIFY_SEND -p -a "$0" -u normal "$MSG"
	fi
	set_slack_snooze 0
	set_slack_status ''

	exit 0
}

while getopts "m:a:qh" opt;do
	case $opt in
		'm')
			MINUTES=$OPTARG
			;;

		'a')
			SOUND=$OPTARG
			;;

		'q')
			QUIET=1
			;;

		'h')
			help
			exit 0
			;;

		[?])
			help
			exit 1
			;;
	esac
done

if [ -z "$SLACK_TOKEN" ] && [ -f "$SLACK_TOKEN_FILE_PATH" ];then
	SLACK_TOKEN=$(gpg -d $HOME/.secret/slack_token.gpg 2>/dev/null)
fi

echo "Pomodoro will run $MINUTES minutes. PID: $$"

get_slack_status
set_slack_snooze $MINUTES
set_slack_status "$SLACK_EMOJI" "$SLACK_STATUS_TEXT"

DURATION=$(awk "BEGIN {print $MINUTES * 60}")

trap 'show_elapsed_time' USR1
trap 'stop_pomodoro' 2

while [ $(($(date -u +%s) - $start)) -lt $DURATION ];do
	sleep 1

	if [ $QUIET -eq 0 ];then
		show_elapsed_time
	fi
done

stop_pomodoro

exit 0