#!/bin/bash
#
# Author: Georg Voell - georg.voell@standby.cloud
# Version: @(#)classic 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.
#
#@  Wrapper script for cli psm.
#@
#@Usage: classic [options] [service]
#@  Options: -h, --help   : Displays helptext.
#@           -v, --version: Displays the version of the script.
#@  Service:              : Service to select.
#@
#@Examples:
#@  classic
#@    List all classic services available.
#
# Exit codes:
#  01: Unknown parameter or first parameter was empty or not a directory.
#  02: psm not available or not initialized.
#  03: Error downloading service list.
#  99: User interrupt.
#
# See also:
#  **install-scripts**(1)
#
# ToDo:
#
# - More objects.
#
# Update history:
#
# V 3.0.0 05.09.2022 First version
# 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="Service was already specified '$param'. Unknown additional parameter: '$pname'."
				fi
			fi
	esac
done

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

# Display help or error message
DisplayHelp

# Define default variables
baseurl="https://standby.cloud/download"

# Download a filelist with tools to install
function DownloadServieList() {
	servicelist=${1}
	
	transfer --quiet ${baseurl}/lists/classic.txt > $servicelist
	status=$?

	if [ $status -ne 0 ]; then
		exitcode=3
		errormsg $exitcode "($progstr) Could not download filelist '$servicelist'." "CURL could not establish a connection to server"

		filecheck -rm $servicelist
		return $exitcode
	else
		cmd="`cat $servicelist | head -n 1 | cut -d$'\t' -f1`"
		if [ "$cmd" != "service" ]; then
			exitcode=3
			errormsg $exitcode "($progstr) Corrupt filelist '$filelist'." "Download not successful"

			filecheck -rm $servicelist
			return $exitcode
		fi
	fi
}

# Main

# Check if he have psm available
psm=`filecheck -x psm`

if [ "$psm" = "" ]; then
	exitcode=2
	errormsg $exitcode "($progstr) No 'psm' in '$PATH'." "Please install it first"
	exit $exitcode
else
	# Check if psm is initialized and we have the latest version
	result=`$psm update 2>&1`
	exitcode=$?
	
	if [ $exitcode -ne 0 ]; then
		result=`echo $result | cut -d'.' -f1`
		if [ "$result" = "Update failed" ]; then
			result="Please check connection to internet"
		fi
		
		errormsg $exitcode "($progstr) CLI 'psm update' failed." "$result"
		exit $exitcode
	else
		# Download classic services list
		DownloadServieList $scratchfile
		exitcode=$?

		if [ $status -eq 0 ]; then
			while IFS=$'\t' read -r service description; do
				printf "\nService: %s (%s): " "$service" "$description"
				exec="services"
				if [ $service = "accs" ]; then
					exec="apps"
				else
					if [ $service = "stack" ]; then
						exec="list"
					fi
				fi
				
				$psm $service $exec >/dev/null 2>&1
				status=$?
				
				if [ $status -eq 0 ]; then
					printf "${green}Usable.${normal}\n\n"
					$psm $service $exec
				else
					printf "${yellow}Status: %d - Forbidden or unused.${normal}\n" $status
				fi
			done < <(cat $scratchfile | tailfromline2 | stripcomment)
		fi
	fi
fi

# Cleanup and exit
Cleanup
exit $exitcode