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#!/usr/bin/bash
# Present exercises next to a simple timer.
SOUND="/usr/share/sounds/freedesktop/stereo/alarm-clock-elapsed.oga"
THINK=30
PAIR=30
PATTERN="*.pdf"
PEACLOCK_CONF="$(mktemp /tmp/peaclock-XXX.conf)"
PEACLOCK_ARGS="-u $PEACLOCK_CONF"
# Create a temporary peaclock timer config
write_timer_conf() {
{
echo "set seconds on"
echo "timer ${1}s"
echo "mode timer"
echo "timer start"
} > "$PEACLOCK_CONF"
}
for f in "$1"/$PATTERN; do
xdg-open "$f" &
write_timer_conf $THINK
# Explicit word expansion of PEACLOCK_ARGS is safe because
# PEACLOCK_CONF does not contain spaces
# shellcheck disable=SC2086
timeout --foreground $THINK peaclock $PEACLOCK_ARGS
ffplay -autoexit -nodisp "$SOUND" 2>/dev/null
write_timer_conf $PAIR
# shellcheck disable=SC2086
timeout --foreground $PAIR peaclock $PEACLOCK_ARGS
ffplay -autoexit -nodisp "$SOUND" 2>/dev/null
reset
read -rp "next>"
# Word splitting to expand all PIDs
# shellcheck disable=SC2046
kill $(jobs -p)
done
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