#!/bin/bash
#
# Author: Georg Voell - georg.voell@standby.cloud
# Version: @(#)export-folder 3.2.0 13.09.2024 (c)2024 Standby.cloud
# Licensed under the Universal Permissive License v 1.0 as shown at https://oss.oracle.com/licenses/upl/
#
# This script can be used free of charge. Use it as is or customize as needed. It is not guaranteed to be
# error free and you will not be reimbursed for any damage it may cause.
#
#@  Export all files from given folder to Object Storage
#@
#@Usage: export-keys [options] folder
#@  Options: -h, --help   : Displays helptext.
#@           -v, --version: Displays the version of the script.
#@  Folder:               : Directory to select.
#@
#@Examples:
#@  export-folder ~/.ssh
#@    Zips all the content under ~/.ssh and exports it to Object Storage
#
# Exit codes:
#  01: Unknown parameter or first parameter was empty or not a directory.
#  02: Cloud tools not initialized
#  03: No write or read URI in JSON project file.
#  04: No curl or zip in PATH.
#  05: Error while zipping.
#  06: Unable to upload file to ObjectStorage.
#  99: User interrupt.
#
# See also:
#  **install-scripts**(1)
#
# ToDo:
#
# - More objects.
#
# Update history:
#
# V 1.0.0 22.03.2021 First version
# V 1.0.1 23.03.2021 Bugfix for Write- and Read-URI is empty
# V 3.0.0 15.11.2021 Export any directory
# V 3.1.0 05.06.2023 New copyright
# V 3.2.0 13.09.2024 New minor version
#

# Find executable bash library and source it
lib=`which lib.bash 2>/dev/null | sed 's|^no 'lib.bash' in .*||'`
if [ "$lib" != "" ]; then
	source "$lib"
else
	progdir=`dirname "$0"`
	if [ -r "${progdir}/lib.bash" ]; then
		source "${progdir}/lib.bash"
	else
		echo "Unexpected error: Unable to locate bash library 'lib.bash'."
		exit 1
	fi
fi

# Preset
param=""

# Check parameters: Loop until all parameters are used up
while [ $# -gt 0 ]; do
	pname=${1}
	case "$pname" in
		-v | --version)
			shift
			showversion=true
			;;
		-h | --help)
			shift
			showhelp=true
			;;
		*)
			shift
			paramck=`echo "$pname" | grep '^-'` # Keys don't begin with '-'
			if [ "$paramck" != "" ]; then
				errstr="Unknown option '$pname'."
			else
				if [ "$param" = "" ]; then
					param="$pname"
				else
					errstr="Folder was already specified '$param'. Unknown additional parameter: '$pname'."
				fi
			fi
	esac
done

# Plausibility check
if [ "$param" = "" ]; then
	errstr="No folder specified in first parameter."
else
	if [ ! -d "$param" ]; then
		errstr="Folder '$param' not found."
	fi
fi

# Display help or error message
DisplayHelp

# Main
projectjson="$HOME/.oci/project.json"

# Check if we have a project definition
if [ -r "$projectjson" ]; then
	writeuri=`browse-json project/writeuri --quiet --raw --select 1 --import "$projectjson"`
	readuri=`browse-json project/readuri --quiet --raw --select 1 --import "$projectjson"`
	parentdir=`dirname "$param"`
	basedir=`basename "$param"`
	tempfile="tmp/${basedir}.zip"
	
	if [ "$writeuri" = "" -o "$readuri" = "" ]; then
		exitcode=3
		errormsg $exitcode "Object Storage URI not found"
	else
		# Check if he have curl and zip in path
		curl=`filecheck -x curl`
		zip=`filecheck -x zip`

		if [ "$curl" != "" -a "$zip" != "" ]; then
			cd "$parentdir"
			$zip -r -q -y $scratchfile "$basedir" -x \*.DS_Store
			stat=$?
			
			if [ $stat -eq 0 ]; then
				$curl -T $scratchfile "${writeuri}$tempfile"
				stat=$?
				
				if [ $stat -eq 0 ]; then
					printf "\nFiles were uploaded and stored for one day. To download them, please use this command:\n\n"
					printf "curl -s ${readuri}$tempfile -o ${basedir}.zip\n"
				else
					exitcode=6
					errormsg $exitcode "Unable to upload file to ObjectStorage"
				fi
			else
				exitcode=5
				errormsg $exitcode "Unable to zip '$HOME/.ssh'"
			fi
		else
			exitcode=4
			errormsg $exitcode "Tool 'curl' or 'zip' not found in PATH '$PATH'"
		fi
	fi
else
	exitcode=2
	errormsg $exitcode "File '$projectjson' not found. Please init cloud tools first"
fi

# Cleanup and exit
Cleanup
exit $exitcode