#!/bin/bash

# Randomly play media segments from a list of files with start and end
# time line format:
# 1:00//1:05//~/file.mp4

f="$1"
n=$(cat "$f" | wc -l)
while true; do
  while read -r line; do
    echo "$line"
    regex='([0-9:]+)//([0-9:]+)//(.+)'
    [[ "$line" =~ $regex ]] || continue
    start=${BASH_REMATCH[1]}
    end=${BASH_REMATCH[2]}
    media=${BASH_REMATCH[3]}
    media="${media/#~/${HOME}}"
    # echo "start: $start; end: $end; file: $media"
    mpv --start=$start --end=$end "$media"
  done <<<$(shuf -n $n "$f")
  sleep 1
done