#!/usr/bin/env bash

USAGE="./yt-dlp-best [options] \"URL\"
  Fetches the best format of a YT video (ideally in mp4)
  Options:
     -y skips the format check normally requiring user action to continue with download"

SKIP_CHECK=0
if [ $# -eq 1 ]; then
    URL=$1
else
    if [ $# -eq 2 ]; then
	if [ "$1" == "-y" ]; then
	    SKIP_CHECK=1
	    URL=$2
	fi
    else
	echo "$USAGE"
	exit 1
    fi
fi

DESIRED_FMT="mp4"
FMT_LINE=$(yt-dlp -F "${URL}" | grep "${DESIRED_FMT}" | tail -n 1)

FMT=$(echo ${FMT_LINE} | cut -d" " -f1)

echo "${FMT_LINE}"
echo "yt-dlp -f ${FMT}+m4a \"${URL}\""

if [ $SKIP_CHECK -eq 0 ]; then
    read -p "proceed (Y/N): " answer
else
    # basically force a "yes" answer
    answer="y"
fi

if [[ "$answer" =~ ^[yY][eE]{0,1}[sS]{0,1}$ ]]; then
    yt-dlp -f ${FMT}+m4a "${URL}"
    exit 0
else
    echo "Okay, cancelling"
    exit 1
fi