my-scripts/play-lofi

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#!/bin/sh
# Copyright (C) 2020 Ortega Froysa, Nicolás <nicolas@ortegas.org> All rights reserved.
# Author: Ortega Froysa, Nicolás <nicolas@ortegas.org>
#
# This software is provided 'as-is', without any express or implied
# warranty. In no event will the authors be held liable for any damages
# arising from the use of this software.
#
# Permission is granted to anyone to use this software for any purpose,
# including commercial applications, and to alter it and redistribute it
# freely, subject to the following restrictions:
#
# 1. The origin of this software must not be misrepresented; you must not
# claim that you wrote the original software. If you use this software
# in a product, an acknowledgment in the product documentation would be
# appreciated but is not required.
#
# 2. Altered source versions must be plainly marked as such, and must not be
# misrepresented as being the original software.
#
# 3. This notice may not be removed or altered from any source
# distribution.
link_file="$XDG_CONFIG_HOME/lofi-link"
print_help() {
echo "USAGE: play-lofi [commands]
A program to play a lofi stream from Invidious (a YouTube proxy). When
given no options, it plays from the stream URL in '\$XDG_CONFIG_HOME/
lofi-link'. If the file does not exist it will give you a selection of
streams to choose from.
Commands:
new choose a new stream URL
set <url> set stream URL
help show this help information"
}
new_link() {
local results=$(curl -s "https://invidio.us/search?q=lofi+radio" |
grep "<p>.*watch" | tr -d "\n" | tr -s " ")
results=${results//\<p\>\<a href\=\"/\"https:\/\/invidio.us}
results=${results//\"\>/\" \"}
results=${results//\<\/a\>\<\/p\>/\" þ }
results=${results::-2} # remove that last separator
# NOTE: I chose þ because never in a million years will that
# character be in the title of a lofi video stream.
IFS="þ" read -r -a streams <<< $results
echo "Streams:"
local id=1
for i in "${streams[@]}"
do
title=${i//*\" \"/\"}
echo "$id) ${title:1:-2}"
((id++))
done
opt=0
while [ "$opt" -gt "${#streams[@]}" ] || [ "$opt" -lt "1" ]
do
printf "Selection: "
read opt
done
link=${streams[$opt]}
link=${link//\" \"*/}
link=${link//*\"/}
echo $link > $link_file
}
# argument parsing
if [ "$#" -eq "1" ]
then
case $1 in
"help")
print_help
exit 0;;
"new")
new_link;;
*)
echo "Unknown command '$1'. Run 'play-lofi help' for a list of commands."
exit 1;;
esac
elif [ "$#" -eq "2" ]
then
if [ "$1" = "set" ]
then
echo "$2" > $link_file
exit 0
else
echo "Unknown command '$1 $2'. Run 'play-lofi help' for a list of commands."
exit 1
fi
elif [ "$#" -gt "2" ]
then
echo "Too many arguments. Run 'play-lofi help' for a list of commands."
exit 1
fi
# check for link file
if ! [ -e "$link_file" ]
then
echo "No link file found in '$link_file'."
while [ "$option" != "y" ] && [ "$option" != "n" ]
do
printf "Would you like to create one? [y/n] "
read option
done
[ "$option" = "n" ] && exit 1
new_link
echo "New link file created."
fi
link=$(cat $link_file)
# check if video is available
output=$(curl -s $link | grep "This video is unavailable.")
if [ -n "$output" ]
then
echo "The stream link '$link' is unavailable."
while [ "$option" != "y" ] && [ "$option" != "n" ]
do
printf "Would you like to find a new one? [y/n] "
read option
done
[ "$option" = "n" ] && exit 1
new_link
echo "New link saved."
fi
mpv --no-video --msg-level=ffmpeg=no $link