#!/bin/bash

toolName=transmission
toolDeps=transmission-daemon
toolService=transmission-daemon
toolUser=debian-transmission
toolCronLoc="/etc/cron.d/transmission_daemon"
toolRemote="$(command -v transmission-remote)"

# Get script working directory
# (when called from a different directory)
WDIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" >>/dev/null 2>&1 && pwd)"
APTOPT=
CONFIG=0
SCRIPT_NAME=$(basename -- $0)
SCRIPT_NAME=${SCRIPT_NAME%%.*}
CONFIG_FILE_NAME="${SCRIPT_NAME}.cfg"
CONFIG_FILE_TEMPLATE="$WDIR/${CONFIG_FILE_NAME}.example"

step_config() {
  initSeqConfig "$CONFIG_FILE_NAME" "$CONFIG_FILE_TEMPLATE"
  if [ $? -eq 0 ] ; then
    CONFIG=1
  else
    # End if no configuration file exists
    [ $DRY -eq 0 ] && return 1
  fi
  [ $QUIET -ne 0 ] && APTOPT="-y"
  return 0
}

step_1_info() { echo "Install $toolName"; }
step_1_alias() { ALIAS="install"; }
step_1() {
  exe apt update
  exe apt install $toolDeps $APTOPT
  exe systemctl stop $toolService
  exe systemctl disable $toolService

  exe mkdir -p "$TRDA_WATCH_LOCAL"
  exe chown ${toolUser}: "$TRDA_WATCH_LOCAL"
}

step_10_info() { echo "Setup blocklist update cron job"; }
step_10_alias() { ALIAS="bllupdate"; }
step_10() {
  addConf -s "$TRDA_REMOTE_AUTH" "$TRDA_REMOTE_AUTH_LOC"
  [ $? -eq 0 ] && exe chmod 600 "$TRDA_REMOTE_AUTH_LOC"

  addConf -s "$TRDA_CRON" "$toolCronLoc"
}

step_11_info() { echo "Setup remote authentication for current user (~/.netrc)"; }
step_11_alias() { ALIAS="netrcauth"; }
step_11() {
  local lRemoteAuth="$(realpath ~/.netrc)"
  if [ ! -f "$lRemoteAuth" ]; then
    addConf -s "$TRDA_REMOTE_AUTH" "$lRemoteAuth"
    [ $? -eq 0 ] && exe chmod 600 "$lRemoteAuth"
  fi
}

step_12_info() { echo "Add ufw rules for rpc and peer port (default 9091 and 51413)"; }
step_12_alias() { ALIAS="ufw"; }
step_12() {
  local trdaRpcPort=9091
  exe ufw allow in on eth0 to any port $trdaRpcPort proto tcp comment "Transmission rpc"
  exe ufw allow in on tun0 to any port $TRDA_PEER_PORT comment "Transmission peer port"
  exe ufw deny out on eth0 to any port $TRDA_PEER_PORT comment "Suppress transmission escapes"
}

step_20_info() { echo "Configuration notes"; }
step_20_alias() { ALIAS="notes"; }
step_20() {
  outColor green
  cat <<NOTES_EOF
[I] Change rpc password
    1) Make sure $toolName service is stopped before editing the configuration file.
    2) Adjust config and enter clear text password like this:
"rpc-password": "MYTRANSMISSIONPASS",
    3) Start $toolName service again, which will hash the password in the config

[I] Some notes about configuration for smaller internet bandwith
    [/etc/transmission/settings.json]
     "alt-speed-down": 500,
     "alt-speed-enabled": true,
     "alt-speed-up": 16,
     "blocklist-enabled": true,
     "blocklist-url": "http://john.bitsurge.net/public/biglist.p2p.gz",
     "download-dir": "/DOWNLOAD_DIR/completed",
     "idle-seeding-limit": 15,
     "idle-seeding-limit-enabled": true,
     "incomplete-dir": "/DOWNLOAD_DIR/incomplete",
     "message-level": 1,
     "ratio-limit": 0.2000,
     "ratio-limit-enabled": true,
     "rpc-whitelist": "127.0.0.1,192.168.0.*",
     "speed-limit-down": 360,
     "speed-limit-up": 16,
     "speed-limit-up-enabled": true,
     "utp-enabled": true,
     "watch-dir": "/var/torrentwatch",
     "watch-dir-enabled": true

[I] Changes requested by transmission-daemon
    Check syslog after startup to find values for your system.
    [/etc/sysctl.conf]
net.core.rmem_max = 4194304
net.core.wmem_max = 1048576

NOTES_EOF
}

step_50_info() { echo "List all available torrents"; }
step_50_alias() { ALIAS="list"; }
step_50() {
  step netrcauth
  outColor green
  exe "$toolRemote" -l
}

step_52_info() { echoinfoArgs "<TORRENT ID>"; echo "List information about a torrent"; }
step_52_alias() { ALIAS="info"; }
step_52() {
  shift
  endCheckEmpty 1 "Id must not be empty"

  step netrcauth
  outColor green
  exep "\"$toolRemote\" -t$1 -i | less"
}

step_54_info() { echo "$toolName status"; }
step_54_alias() { ALIAS="status"; }
step_54() {
  step netrcauth
  outColor green
  exe "$toolRemote" -si
  exe "$toolRemote" -st
}

VERSION_SEQREV=13
. /usr/local/bin/sequencer.sh