#!/bin/bash

total_duration=0.0
prefix=$1
idx=1
#prefix="PPL Training  Aircraft General "

if [ "x$prefix" == "x" ]
then
	echo "Provide prefix as first argument"
	exit
fi

# get chapters configuration
for f in *.mp4
do
	test "$f" == "$output" && continue
	noext=${f%%.mp4}
	duration=$(ffprobe "$f" -show_entries format=duration -v quiet -of csv="p=0")
	echo "<li><a href=\"#videoBox\" onclick=\"document.querySelector('video').currentTime=$total_duration;\" data-chapter=\"$idx\">${noext##$prefix}</a></li>"
	total_duration=$(echo $duration + $total_duration | bc)
	idx=$(expr $idx + 1)
done