#!/bin/bash
# 2016-01-26 https://github.com/mediathekview/MediathekView/blob/9558f62a46cff0b1b8078083629647b5e87e82ca/res/bin/aria2-remote.sh
# 2022-12-29 Changes by github-user @porg
# - Fixed bug: 
#   - base64 argument --wrap (Linux lingo) vs. --break (Mac lingo)
# - Changed $filename to $filepath (hence removed basename operation)
#   - That way one can pass ./paths/to/video.mp4 relative to aria root --dir=/srv/media/videos
# - Log
#   - Changed debug format to be more readable.
#   - Log location customizable to typical paths on Mac or Linux.
#   - Persistent log (First write operation is not an overwrite ">" but an append ">>" operation)


# Das Skript muss evtl. noch 
# "ausführbar" gemacht werden!!!

# Programmparameter in MediathekView
# %f ** <URL of aria2 daemon> <secret for aria2 daemon>

# oder ohne gesetztes Passwort
# %f ** <URL of aria2 daemon>

# Start von aria2 auf dem Server
# aria2c --enable-rpc --rpc-listen-all --dir=/ZIELPFAD/FILME
# Wichtig: Kein abschließender Schrägstrich, sonst werden von Mediathek übergebene
#          relative ./pfade/zum/video zu /ZIELPFAD/FILME//pfade/zum/video mit Doppelschrägstrich

# OS adaptation / User customization:
  # Linux log in temporary folder: log=/tmp/MediathekView-aria2.log
  # Mac: Persistent log within Home Directory: log=~/Library/Logs/MediathekView-aria2.log
log=~/Library/Logs/MediathekView-aria2.log

echo -e "▾ $(date '+%Y-%d-%m %H:%M:%S')\n" >> $log
echo -e " • RUN   $0 $*\n" >> $log

url=$1
filepath="$2"
# filename=$(basename "$2")

aria2_server_url=$3
aria2_server_secret=$4

#echo >>$log
#echo "MediathekView-aria2 parameters:" >>$log
#while [ -n "$1" ]
#do
#  echo "$1" >>$log
#  shift
#done

echo -e "• URL   $url\n" >> $log
echo -e "• PATH  $filepath\n" >> $log
echo -e "• SERV  $aria2_server_url\n" >> $log
echo -e "• TOKN  $aria2_server_secret\n" >> $log

id=medview
method=aria2.addUri

if [ -n "$filepath" ]
then
  options=",{\"out\":\"${filepath}\"}"
else
  options=""
fi

params="[\"token:${aria2_server_secret}\",[\"${url}\"]${options}]"

# OS adaptation: base64 argument terminology differs between Mac and Linux variant
  # Linux: -w / --wrap option
  # macOS: -b / --break -- Both in built-in and brew variant of base64.
params_base64enc=$(echo "${params}" | base64 --break 0 -)
params_base64enc_urlenc=${params_base64enc//=/%3D}


get="${aria2_server_url}?id=${id}&method=${method}&params=${params_base64enc_urlenc}"

echo >>$log
echo "EXEC  $get" >> $log

result=$(curl -S -k "$get")

echo >>$log
echo -e "-->   $result\n\n---\n\n" >> $log

if [[ $result =~ '"Result":' ]]
then
  exit 0
else
  exit 1
fi