#!/bin/bash

# bash script to play files from a slow network ressource, FTP folder, samba share or network drive etc.
# caches the file in /tmp and moves to $ARCHIV
# -y to skip verification
# export global variable $ARCHIV
# set the exit code right for quitting
# echo "q quit 255" >> ~/.mpv/input.conf

printhelp(){

	echo "Bash script to play and cache files from a slow network ressource"
	echo ""
	echo " -d   only remove the file in /tmp"
	echo " -g   don't ask for downloading"
	echo " -h   prints this help"
	echo " -n   don't ask for moving"
	echo " -y   move to archiv without question"
	echo " -o   ask for a different archiv"
	echo " --no-cache   Not caching the file, instead play's directly"

	exit 0
}

cache=1

while true; do
	case "$1" in 
		--no-cache|--nc)	cache=0
					shift
					;;
		-y|-Y|--yes|-j|-ja)	verify="yes"
					shift
					;;
		-d|--rm|--remove) 	verify="rm"
					shift
					;;
		-o|--other|--ot)	verify="other"
					shift
					;;
		-n|--no|--nope|--nein)	verify="no"
					shift
					;;
		-g|--download|--down)	download="yes"
					shift
					;;
		-h|--help)		printhelp
					;;
		--)			shift #stops processing arguments	
					break 
					;;
		-*)			echo "'$1' Unknown argument."
					exit 1
					;;
		*)			break
					;;
	esac
done

if [ $# -eq 0 ]; then
	printhelp
fi

if [ $# -gt 1 ]; then
	echo "Do not commit more than one file."
	exit 1
fi

if [ ! -f "$1" ]; then
	echo "No valid file input."
	exit 1
fi

player[0]=$(command -v mpv) 		#media player of choice
player[1]=$(command -v mplayer)
player[2]=$(command -v vlc)		#you shouldn't use vlc

for i in "${player[@]}"; do
	if [ ! $i = "" ]; then
		player=$i
		break
	fi
done

if [ ! $player ]; then
	echo "No media player found. Please edit this script manually. I recommend the mpv. http://mpv.io"
	exit 1
fi

if [ $cache -gt 0 ]; then

	if [ ! $ARCHIV ]; then
		echo "Note: Variable \$ARCHIV couldn't be found. It will play the file fine, but you should consider to organize your collection."
		read -p "You can export it temporarily. If you do, just type the path to the folder, if you don't, leave it empty. " path
		if [ "$path" ] && [ -d "$path" ] && [ -w "$path" ]; then
			export ARCHIV="$path"
			echo "Roger that!"
		fi
	fi

	pwd=$(pwd)

	if [ -d /tmp ] && [ -w /tmp ]; then
		tmp="/tmp"
	else
		read -p "Please name the directory to cache the file: " tmp
		if [ ! -d "$tmp" ] || [ ! -w "$tmp" ]; then
			echo "Directory doesn't exist or you don't have write permission."
			exit 1
		fi
	fi


	if [[ "$@" =~ ^https?://.+\.[a-z]{2}[a-z]* ]]; then
		read -p "Detected hyperlink. Should we try to download (caching)? Type something random to play direct with the mpv. [y/N] " download
		if [[ $download = "ja" ]] || [[ $download = "yes" ]] || [[ $download = "j" ]] || [[ $download = "y" ]] || [[ $download = "Y" ]]; then
			cd "$tmp"
			wget -q -O "file" "$@" & 
			echo "Starting download. Ready to play in 2 sec."
			sleep 2
			mpv $file
			echo "TODO: Moving to archiv. Not implemented yet."
			exit 0
		elif [[ $player =~ mpv$ ]] && [ $download ] && ( [ ! $download = "n" ] && [ ! $download = "N" ] && [ ! $download = "no" ] && [ ! $download = "nein" ] && [ ! $download = "NO" ]); then
			echo "Playing directly using mpv."
			mpv "$@"
			if [ $? -eq 0 ]; then
				echo "Have a nice day!"
				exit 0
			else
				echo "Something is broken with the media player!"
				exit 1
			fi
		else
			echo "This script is designed to cache media files from a FTP share or network drive. Exiting. "
			exit 1
		fi
	else
		file=$(basename "$@")
		if [ -f "$tmp/$file" ]; then
			skip=true
		fi
		cp -u -i "$@" "$tmp" &
		cd "$tmp"
		#file=${@##*/}

		if [ ! $skip ]; then
			echo -n "Preparing the awesome! Starting playback in.."
			echo -n " 2,"
			sleep 1
			echo -n " 1 "
			sleep 1
		fi

		echo "Start!"
	fi
else
	echo -n "Preparing the awesome! Starting playback in.."
	file="$@"
	echo -n "Now!" 
fi

$player "$file"
if [ $? -eq 0 ]; then 
	if [ -d $ARCHIV ] && [ -w $ARCHIV ] && [ $ARCHIV ]; then
		echo "Finished $file succesfull."
		if [ ! $verify ]; then
			read -p "Should we move everything to the archiv? ($ARCHIV) [Y/n/rm/other] " verify
		fi
		if [ ! $verify ] || [ $verify = "ja" ] || [ $verify = "yes" ] || [ $verify = "j" ] || [ $verify = "y" ] || [ $verify = "Y" ]; then
			echo "Moving the stuff to $ARCHIV."
			mv -v "$file" "$ARCHIV"
			if [ $? -eq 0 ]; then
				cd "$pwd"
				rm -v "$@"
			fi
		elif [ $verify = "other" ] || [ $verify = "o" ] || [ $verify = "O" ] || [ $verify = "OTHER" ]; then
			read -p "Please tell us the absolute path: " path
			if [ -d $path ] && [ -w $path ]; then
				echo "Moving to $path."
				mv -v "$file" "$path"
				if [ $? -eq 0 ]; then
					cd "$pwd"
               	                       	rm -v "$@"
                       	       	fi
			else
				echo "Sorry, \"$path\" doesn't exist."
				exit 1
			fi
		elif [ $verify = "r" ] || [ $verify = "rm" ] || [ $verify = "remove" ] || [ $verify = "RM" ] || [ $verify = "R" ]; then
			echo "Cleaning the mess up. Only removing files from $tmp."
			rm -v "$file"
		else
			echo "Okay, don't touching the files."		
		fi
	else
		echo "Can't move to \"$ARCHIV\". Directory doesn't exist or you don't have write permission."
		exit 1
	fi
else
	echo "Something is broken with the media player!"
	exit 1
fi

echo "Have a nice day!"
exit 0