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dotfiles/private_dot_local/bin/executable_shuffle

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#!/usr/bin/env bash
PLAYLIST="$1"
COUNT="$2"
set -e
PLAYLIST_DIR="$HOME/Music/Playlists"
function rand_num() {
cat /dev/urandom | tr -dc '0-9' | head -c 10 | sed -e 's/^0*//'
}
function pick_song() {
playlist="$1"
playlist_path="$PLAYLIST_DIR/$playlist.pls"
if [[ ! -f "$playlist_path" ]]
then
echo "error: playlist $playlist not found"
exit 1
fi
songs="$(cat "$playlist_path" | grep '^file' | sed -e 's|^[^=]*=\.\./||')"
num=$(( 1 + $(rand_num) % $(echo "$songs" | wc -l) ))
song="$(echo "$songs" | sed "${num}q;d")"
echo "$(dirname "$PLAYLIST_DIR")/$song"
}
function get_flags() {
path="$1"
meuadata="flac"
genre="$(ffmpeg -i "${path}" 2>&1 | grep GENRE | sed -e 's/^.*: //')"
if [[ "$(echo "${path}" | sed -e 's/^.*\.\([^\.]*\)$/\1/')" == "mp3" ]]
then
metadata="mp3"
genre="$(id3v2 -l "${path}" | grep '^TCON' | sed -e 's/^.*: //')"
fi
echo $genre
}
function get_like_level() {
flags="$1"
level="$(echo "$flags" | sed -e 's/^.*L\([0-3]\).*$/\1/')"
if [[ "$level" == "$(echo "$level" | tr -dc '0-3')" ]]
then
echo $level
else
echo 2 # default like level
fi
}
function shuffle() {
playlist="$1"
song="$(pick_song "$playlist")"
flags="$(get_flags "$song")"
like=$(get_like_level "$flags")
like_min=$(( 1 + $(rand_num) % 3 ))
if [[ "$in_list" == "false" || "$like" -lt "$like_min" ]]
then
shuffle "$playlist"
else
mpd_song="$(echo "$song" | sed -e 's|.*/Music/||')"
echo "$mpd_song"
mpc add "$mpd_song"
fi
}
if [[ -z "$PLAYLIST" ]]
then
PLAYLIST=all
fi
# pick_song "$PLAYLIST"
if [[ -z "$COUNT" ]]
then
echo "add one song to que from $PLAYLIST"
echo "$(shuffle $PLAYLIST)"
else
echo "add $COUNT songs to que from $PLAYLIST"
for i in $(seq 1 $COUNT)
do
echo "$(shuffle $PLAYLIST)"
# echo $i
done
fi