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#!/bin/bash
### BEGIN INIT INFO
# Provides:          lume-watcher
# Required-Start:    $remote_fs $syslog
# Required-Stop:     $remote_fs $syslog
# Default-Start:     2 3 4 5
# Default-Stop:      0 1 6
# Short-Description: Watches directory and triggers Lume task
# Description:       Watches the specified directory and triggers the Deno Lume task when changes are detected.
### END INIT INFO

WATCHED_DIR="/var/www/html/soulmining/src/"
COMMAND="/home/haturatu/.deno/bin/deno task lume --dest=site"
COOLDOWN_TIME=60
LAST_RUN_FILE="/tmp/last_run.time"
LOG_FILE="/var/log/lume-watcher.log"
PID_FILE="/var/run/lume-watcher.pid"

# 現在の時間を取得
current_time() {
    date +%s
}

# 最後にコマンドを実行した時間を取得する(存在しない場合は0を返す)
get_last_run_time() {
    if [ -f "$LAST_RUN_FILE" ]; then
        cat "$LAST_RUN_FILE"
    else
        echo 0
    fi
}

# 最後にコマンドを実行した時間を記録する
get_last_run_time() {
    if [ -f "$LAST_RUN_FILE" ]; then
        cat "$LAST_RUN_FILE"
    else
        echo 0
    fi
}

set_last_run_time() {
    current_time > "$LAST_RUN_FILE"
}

# デーモンの開始
monitor_directory() {
    inotifywait -m -r -e modify,create,delete "$WATCHED_DIR" | while read -r directory events filename; do
        echo "$(date): Change detected" >> "$LOG_FILE"
        last_run_time=$(get_last_run_time)
        now=$(current_time)

        if [ $((now - last_run_time)) -ge $COOLDOWN_TIME ]; then
            echo "$(date): Executing command" >> "$LOG_FILE"
            
            sleep 10
            cd /var/www/html/soulmining || exit
            $COMMAND >> "$LOG_FILE" 2>&1
            cd ~ || exit

            set_last_run_time
        else
            echo "$(date): Command not executed due to cooldown" >> "$LOG_FILE"
        fi
    done
}

start() {
    echo "Starting lume-watcher..."
    monitor_directory &
    echo $! > "$PID_FILE"
    echo "Service started."
}

stop() {
    echo "Stopping lume-watcher..."
    if [ -f "$PID_FILE" ]; then
        kill $(cat "$PID_FILE")
        rm -f "$PID_FILE"
        echo "Service stopped."
    else
        echo "Service not running."
    fi
}

status() {
    if [ -f "$PID_FILE" ]; then
        cat "$PID_FILE"
        echo "Service is running."
    else
        echo "Service is stopped."
    fi
}

case "$1" in
    start)
        start
        ;;
    stop)
        stop
        ;;
    status)
        status
        ;;
    restart)
        stop
        start
        ;;
    *)
        echo "Usage: lume-watcher {start|stop|status|restart}"
        exit 1
        ;;
esac

exit 0