seedbox sync

#!/bin/bash

# -------------------------------
# Seedbox
# -------------------------------
REMOTE_HOST=""                      # Remote FTP host
REMOTE_USER=""                           # Remote FTP username
REMOTE_PASSWORD=""              # Remote FTP password

# -------------------------------
# Variables
# -------------------------------
REMOTE_DIR=""                     # Remote directory or file to sync
LOCAL_DIR=""                   # Local directory for syncing

# -------------------------------
# qBittorrent
# -------------------------------
QB_API_URL="/api/v2" # qBittorrent Web API URL
QB_USERNAME=""                           # qBittorrent username
QB_PASSWORD=""                  # qBittorrent password
QB_CATEGORY=""              # qBittorrent category for filtering torrents

# Check if lftp is already running
if ps aux | grep -v grep | grep -q "lftp"; then
    echo "lftp is already running. Exiting."
    exit 1
fi

# -------------------------------
# Login to qBittorrent API
# -------------------------------
echo "Logging in to qBittorrent..."
QB_COOKIE=$(curl -si -X POST "$QB_API_URL/auth/login" \
    --data-urlencode "username=$QB_USERNAME" \
    --data-urlencode "password=$QB_PASSWORD" | grep -oP 'set-cookie: \K.*SID=.*' | tr -d '\r')

if [ -z "$QB_COOKIE" ]; then
    echo "Failed to log in to qBittorrent."
    exit 1
fi
echo "Login successful."

# -------------------------------
# Check for active downloads in qBittorrent
# -------------------------------
echo "Checking for active downloads in qBittorrent..."
RESPONSE=$(curl -s -b "$QB_COOKIE" "$QB_API_URL/torrents/info")
if [ $? -ne 0 ] || [ -z "$RESPONSE" ]; then
    echo "Failed to fetch torrent info. Exiting."
    exit 1
fi

ACTIVE_PATHS=$(echo "$RESPONSE" | jq -r \
    ".[] | select(.state | test(\"downloading|stalledDL\")) | select(.category == \"$QB_CATEGORY\") | .content_path")

if [ -n "$ACTIVE_PATHS" ]; then
    echo "Active downloads detected. Skipping sync."
    exit 0
fi

echo "No active downloads detected. Proceeding with sync."

# -------------------------------
# Run lftp to list files and download them if modified since the last sync
# -------------------------------
echo "Starting lftp sync for new/updated files..."

lftp -u "$REMOTE_USER","$REMOTE_PASSWORD" "$REMOTE_HOST" -e "
set file:use-lock true;
set xfer:use-temp-file true;
set xfer:temp-file-name *.lftp
mirror --continue \
       --parallel=3 \
       $REMOTE_DIR $LOCAL_DIR;
bye;
"

echo "Sync and transfer completed."