#!/bin/bash
# Get transmission credentials and ip or dns address
auth=user:password
host=localhost
# set trackers list space separated
trackers=https://raw.githubusercontent.com/ngosang/trackerslist/master/trackers_all.txt
pt_trackers=()

while true; do
    sleep 25
    add_trackers() {
        torrent_hash=$1
        id=$2
        trackerslist=/tmp/trackers.txt
        for base_url in $trackers; do
            if [ ! -f $trackerslist ]; then
                curl -o "$trackerslist" "${base_url}"
            fi
            Local=$(wc -c <$trackerslist)
            Remote=$(curl -sI "${base_url}" | awk '/Content-Length/ {sub("\r",""); print $2}')
            if [ "$Local" != "$Remote" ]; then
                curl -o "$trackerslist" "${base_url}"
            fi
            echo "URL for ${base_url}"
            echo "Adding trackers for $torrent_name..."
            for tracker in $(cat $trackerslist); do
                echo -n "${tracker}..."
                if transmission-remote "$host" --auth="$auth" --torrent "${torrent_hash}" -td "${tracker}" | grep -q 'success'; then
                    echo ' done.'
                else
                    echo ' already added.'
                fi
            done
        done
        sleep 3m
        rm -f "/tmp/TTAA.$id.lock"
    }
    # Get list of active torrents
    ids="$(transmission-remote "$host" --auth="$auth" --list | grep -vE 'Seeding|Stopped|Finished|[[:space:]]100%[[:space:]]' | grep '^ ' | awk '{ print $1 }')"
    for id in $ids; do
        add_date="$(transmission-remote "$host" --auth="$auth" --torrent "$id" --info | grep '^  Date added: ' | cut -c 21-)"
        add_date_t="$(date -d "$add_date" "+%Y-%m-%d %H:%M")"
        dater="$(date "+%Y-%m-%d %H:%M")"
        dateo="$(date -d "1 minutes ago" "+%Y-%m-%d %H:%M")"
        tracker0="$(transmission-remote "$host" --auth="$auth" -t "$id" -it | sed -n '2,2p' | awk '{print $3}' | awk -F : '{print $2}' | sed -e 's/\/\///')"
        if [[ " ${pt_trackers[@]} " =~ " $tracker0 " ]]; then
            echo "skip id=" "$id" "$tracker0"
            continue
        fi

        if [ ! -f "/tmp/TTAA.$id.lock" ]; then
            if [[ "( "$add_date_t" == "$dater" || "$add_date_t" == "$dateo" )" ]]; then
                hash="$(transmission-remote "$host" --auth="$auth" --torrent "$id" --info | grep '^  Hash: ' | awk '{ print $2 }')"
                torrent_name="$(transmission-remote "$host" --auth="$auth" --torrent "$id" --info | grep '^  Name: ' | cut -c 9-)"
                add_trackers "$hash" "$id" &
                touch "/tmp/TTAA.$id.lock"
            fi
        fi
    done
done