#!/bin/bash  
# author: kkzzhizhou
# desc: nextcloud inotify sync script.
# This script is a wrapper around nextcloudcmd, designed to keep a local directory synchronised with a Nextcloud repository.
#
# Usage: nextcloud-sync.sh configfile
#
# The config file must contain "username", "password", "local" directory and "remote" URL to a Nextcloud service. 

PROG=$(basename "$0")
PROGDIR=$(cd "$(dirname "$0")" && pwd)

set -e
set -u
set -o pipefail

USERNAME='xxx'
PASSWORD='xxx'
LOCAL_DIR="xxx" # 本地Syncthing文件夹路径
REMOTE_URI="https://xxx" # 填写Nextcloud服务地址
DAVPATH="Notes"
NEXTCLOUD_DATA_DIR='xxx'  # 填写Nextcloud用户数据路径
NEXTCLOUD_DIR="$NEXTCLOUD_DATA_DIR/$USERNAME/files/$DAVPATH"

case $1 in 
    start)
        echo 0 > "$PROGDIR/sync.lock"
        echo "start monitoring: ${LOCAL_DIR}"
        echo "start monitoring: ${NEXTCLOUD_DIR}"
        /usr/bin/inotifywait -mrq --exclude '/\..*' --timefmt '%d/%m/%y %H:%M:%S' --format '%T %w %f %e' -e modify,delete,create "$LOCAL_DIR" -o $PROGDIR/inotify.log -d
        /usr/bin/inotifywait -mrq --exclude '/\..*' --timefmt '%d/%m/%y %H:%M:%S' --format '%T %w %f %e' -e modify,delete,create ${NEXTCLOUD_DIR} -o $PROGDIR/inotify.log -d
        nohup /usr/bin/inotifywait -mq --timefmt '%d/%m/%y %H:%M:%S' --format '%T %w %f %e' -e modify $PROGDIR/inotify.log | while read file 
        do
            last_sync_timestamp=$(cat $PROGDIR/sync.lock)
            current_timestamp=$(date +%s)
            timestamp_check=$[$last_sync_timestamp + 10]
            if [ $timestamp_check -lt $current_timestamp ];then
                echo $current_timestamp > "$PROGDIR/sync.lock"
                echo "$current_timestamp: sync was started"
                nextcloudcmd -s --non-interactive --user "$USERNAME" --password "$PASSWORD" --path "$DAVPATH" "$LOCAL_DIR" "$REMOTE_URI"
            #else
                #echo "$current_timestamp: sync ignored"
            fi
        done > "$PROGDIR/sync.log" & 2>&1
        ;;
    stop)
        echo "stop all monitoring"
        pkill inotifywait
        ;;
esac