#! /bin/bash

#trotFunky's Linux Auto Uploader (LAU)
#Uses dropbox HTTP API through curl to upload a file and copy shareable link into clipboard
#NEEDS : curl, xclip

if [ -z "$DROPBOX_TOKEN" ]; then
	echo "No token provided."
	echo "Please set the env variable DROPBOX_TOKEN to the dropbox authorization token"
	exit -1
fi

if [ $# -lt 1 ]; then
	echo "Too few arguments. Expecting one agument: File name"
	exit -1
elif [ $# -gt 1 -a "$2" != "debug" ]; then
	echo "Too many arguments. Expecting only one argument: File name"
	exit -1
elif [ ! -f "$1" ]; then
	echo "File does not exist or is not uploadable"
	exit -1
fi

filePath=$1

if [[ $filePath = */* ]]; then							#If the string contains a /
	fileName="/${filePath##*/}"							#Or you know, just remove the largest possible string matching */ and a / at the beginning (Keeping the other for reference)
	#fileName="${filePath#"${filePath%/*}"}"			#Variable expansion. Innermost bracket reads "Get what does not match the /* anchored at the end".
else													#The outermost bracket then removes it from the original string (By doing the same as above but anchored to the start)
	fileName="/$filePath"
fi

if [ -n "$2" ]; then
	echo $filePath
	echo $fileName
fi

#CF curl's and dropbox API's documentations

upload=$(curl --silent https://content.dropboxapi.com/2/files/upload \
    -H "Authorization: Bearer $DROPBOX_TOKEN" \
    -H 'Dropbox-API-Arg: {"path": "'"$fileName"'", "mode": "add", "autorename": true, "mute": false}' \
    -H "Content-type: application/octet-stream" \
    --data-binary @"$filePath" )

link=$(curl --silent https://api.dropboxapi.com/2/sharing/create_shared_link_with_settings \
    -H "Authorization: Bearer $DROPBOX_TOKEN" \
    -H "Content-type: application/json" \
    -d '{"path": "'"$fileName"'"}' )

if [ -n "$2" ]; then
	echo $upload
	echo $link
fi

tmpShareLink="$(echo -n $link | cut -d, -f2 | cut -d: -f2-3)"	#According to the returned data, this is where the URL is
tmpShareLink="${tmpShareLink#*\"}"						#Removes everything matching *"
tmpShareLink="${tmpShareLink%\"*}"						#Removes everything matching "*
shareLink="${tmpShareLink/https:\/\/www/https:\/\/dl}"  #Replaces www by dl for direct link
echo -n "$shareLink" | xclip -selection clipboard