#!/bin/bash

set -euo pipefail

# Copyright (C) 2025 Nicolás Ortega Froysa <nicolas@ortegas.org> All rights reserved.
# Author: Nicolás Ortega Froysa <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.

CLIP=0

if [ $# -ne 1 ]
then
	>&2 echo "Usage: $0 <url>"
	exit 1
fi

for arg in "$@"
do
	case "$arg" in
		-c|--clip)
			CLIP=1
			;;
		-h|--help)
			echo "Usage: $0 [-c] <url>"
			exit 0
			;;
		*)
			URL="$arg"
			;;
	esac
done

if [ -z "${URL:-}" ]
then
	>&2 echo "No URL provided"
	exit 1
fi

YT_URL="${URL//https:\/\/*\//https:\/\/www.youtube.com\/}"

if [ $CLIP -eq 0 ]
then
	echo "$YT_URL"
else
	if [ "$XDG_SESSION_TYPE" = "wayland" ]
	then
		if ! command -v wl-copy &> /dev/null
		then
			>&2 echo "wl-copy not found, cannot copy to clipboard"
			exit 1
		fi
		echo "$YT_URL" | wl-copy
	else
		if ! command -v xclip &> /dev/null
		then
			>&2 echo "xclip not found, cannot copy to clipboard"
			exit 1
		fi
		echo "$YT_URL" | xclip -sel clip
	fi
fi