tmux-kanagawa/scripts/continuum.sh

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#!/usr/bin/env bash
# setting the locale, some users have issues with different locales, this forces the correct one
export LC_ALL=en_US.UTF-8
# configuration
# @kanagawa-continuum-mode default (countdown|time|alert|interval)
# @kanagawa-continuum-time-threshold 15
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alert_mode="@kanagawa-continuum-mode"
time_threshold="@kanagawa-continuum-time-threshold"
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warn_threshold=360
first_save="@kanagawa-continuum-first-save"
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# tmux-resurrect and tmux-continuum options
if [ -d "$HOME/.tmux/resurrect" ]; then
default_resurrect_dir="$HOME/.tmux/resurrect"
else
default_resurrect_dir="${XDG_DATA_HOME:-$HOME/.local/share}"/tmux/resurrect
fi
resurrect_dir_option="@resurrect-dir"
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last_auto_save_option="@continuum-save-last-timestamp"
auto_save_interval_option="@continuum-save-interval"
auto_save_interval_default="15"
current_dir="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
source $current_dir/utils.sh
current_timestamp() {
echo "$(date +%s)"
}
file_mtime() {
if [ ! -f "$1" ]; then
echo -1
return
fi
case $(uname -s) in
Linux|Darwin)
date -r "$1" +%s
;;
FreeBSD)
stat -f %m "$1"
;;
CYGWIN*|MINGW32*|MSYS*|MINGW*)
# TODO - windows compatability
;;
esac
}
timestamp_date() {
case $(uname -s) in
Linux)
date -d "@$1" "$2"
;;
Darwin|FreeBSD)
date -r "$1" "$2"
;;
CYGWIN*|MINGW32*|MSYS*|MINGW*)
# TODO - windows compatability
;;
esac
}
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set_tmux_option() {
local option="$1"
local value="$2"
tmux set-option -gq "$option" "$value"
}
# tmux-resurrect dir
resurrect_dir() {
if [ -z "$_RESURRECT_DIR" ]; then
local path="$(get_tmux_option "$resurrect_dir_option" "$default_resurrect_dir")"
# expands tilde, $HOME and $HOSTNAME if used in @resurrect-dir
echo "$path" | sed "s,\$HOME,$HOME,g; s,\$HOSTNAME,$(hostname),g; s,\~,$HOME,g"
else
echo "$_RESURRECT_DIR"
fi
}
_RESURRECT_DIR="$(resurrect_dir)"
last_resurrect_file() {
echo "$(resurrect_dir)/last"
}
last_saved_timestamp() {
local last_saved_timestamp="$(get_tmux_option "$last_auto_save_option" "")"
local first_save_timestamp="$(get_tmux_option "$first_save" "")"
# continuum sets the last save timestamp to the current time on first load if auto_save_option is not set
# so we can outrace it and detect that last_uato_save_option is empty and the timestamp is a dummy save
if [ -z "$first_save_timestamp" ]; then
last_saved_timestamp="$(file_mtime "$(last_resurrect_file)")" || last_saved_timestamp=-1
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set_tmux_option "$first_save" "$last_saved_timestamp"
elif [ "$first_save_timestamp" != "done" ]; then
last_saved_timestamp="$(file_mtime "$(last_resurrect_file)")" || last_saved_timestamp=-1
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if [ "$last_saved_timestamp" -gt "$first_save_timestamp" ]; then
set_tmux_option "$first_save" "done"
else
last_saved_timestamp="$first_save_timestamp"
fi
fi
echo "$last_saved_timestamp"
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}
print_status() {
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local mode="$(get_tmux_option "$alert_mode" "countdown")"
local info_threshold="$(get_tmux_option "$time_threshold" "15")"
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local save_int="$(get_tmux_option "$auto_save_interval_option" "$auto_save_interval_default")"
local interval_seconds="$((save_int * 60))"
local status=""
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local last_timestamp="$(last_saved_timestamp)"
local time_delta="$(($(current_timestamp) - last_timestamp))"
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local time_delta_minutes="$((time_delta / 60))"
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if [[ $save_int -gt 0 ]]; then
if [[ "$time_delta" -gt $((interval_seconds + warn_threshold)) ]]; then
if [[ "$last_timestamp" == -1 ]]; then
status="no save"
else
status="last save: $(timestamp_date "$last_timestamp" '+%F %T')"
fi
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if [[ "$mode" == "countdown" ]]; then
# continuum timestamp may be different than file timestamp on first load
local last_continuum_timestamp="$(get_tmux_option "$last_auto_save_option" "")"
time_delta="$(($(current_timestamp) - last_continuum_timestamp))"
time_delta_minutes="$((time_delta / 60))"
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status="$status; T$(printf '%+d' "$((time_delta_minutes - save_int))")min"
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fi
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elif [[ "$time_delta" -le "$info_threshold" ]]; then
status="saved"
else
case "$mode" in
countdown)
status="T$(printf '%+d' "$((time_delta_minutes - save_int))")min";
;;
time)
status="$time_delta_minutes";
;;
alert)
status=""
;;
interval)
status="$save_int"
;;
esac
fi
else
status="off"
fi
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echo "$status"
}
print_status