#!/bin/bash

if [ "$#" -ne 2 ]; then
    echo "usage ts2mp4.sh [path to vdr recordings] [path to movies]";
    exit 1;
fi

if [ ! -d $1 ]; then
    echo "vdr recordings directory not valid: $1";
    exit 1;
fi

if [ ! -d $2 ]; then
    echo "movie directory not valid: $2";
    exit 1;
fi

echo "vdr recordings directory: $1";
echo "movie directory: $2";

echo "changing into vdr recordings directory '$1'";
cd $1;

echo `pwd`

FILE_LIST="$1/tompg.lst"
while IFS= read -r LINE
do
    echo "processing '$LINE'";
    cd "$LINE";
    for j in *.rec; do
        cd $j;
        BASENAME=00001;
        INFO_FILE=info
        if [ -f 001.vdr ]; then
            BASENAME=001;
            INFO_FILE=info.vdr
        fi
        MOVIENAME=$(sed -n -e 's/^T \(.*\)$/\1/p' $INFO_FILE);
        if [ ! -f "$2/$MOVIENAME/$MOVIENAME.mkv" ]; then
            echo `pwd`

            echo "BN $BASENAME"
            echo "demuxing $MOVIENAME"
            if [ $BASENAME == "001" ]; then
                FILENAMES=$(ls 00*.vdr | paste -sd " " -);
            else
                FILENAMES=$(ls *.ts | paste -sd " " -);
            fi
            projectx -demux $FILENAMES -name $BASENAME -cut marks.bytepos

            echo "converting $MOVIENAME";

            if [ ! -d "$2/$MOVIENAME" ]; then
                mkdir "$2/$MOVIENAME";
            fi

            if [ -f "$BASENAME.ac3" ]; then
                echo "mplex -f 8 -o \"$MOVIENAME.mpg\" $BASENAME.ac3 $BASENAME.mp2 $BASENAME.m2v";
                mplex -f 8 -o "$MOVIENAME.mpg" $BASENAME.ac3 $BASENAME.mp2 $BASENAME.m2v;
            else
                echo "mplex -f 8 -o \"$MOVIENAME.mpg\" $BASENAME.mp2 $BASENAME.m2v";
                mplex -f 8 -o "$MOVIENAME.mpg" $BASENAME.mp2 $BASENAME.m2v;
            fi
            echo "ffmpeg -nostdin -i \"$MOVIENAME.mpg\" -c:v libx264 -c:a aac \"$2/$MOVIENAME/$MOVIENAME.mkv\"";
            ffmpeg -nostdin -i "$MOVIENAME.mpg" -c:v libx264 -c:a aac "$2/$MOVIENAME/$MOVIENAME.mkv";
        else
            echo "video file $MOVIENAME.mkv already exists; skipping";
        fi
        cd ..;
    done;
    cd ..;
done < "$FILE_LIST"