#!/bin/sh
# Glacier - A source based package manager written in POSIX sh
# (C) 2022 Everest Developers
# This program is free software: see the GNU GPL v3.0 for details.

# Preloading

source /etc/glacier/hooks.sh

while [[ $# -gt 0 ]]; do
	case $1 in
		-h|--help)
		printf "$blue Glacier - A source based package manager written in POSIX sh $reset\n"
		printf "glacier {-h --help}			show this message and exit\n"
		printf "glacier {--version}			display the current Glacier version and exit\n"
		printf "glacier {install -f}			install a package\n"
		printf "glacier {update -u}			update a package\n"
		printf "glacier {remove -x}			remove a package\n"
		printf "glacier {query -q}			query a package\n"
		printf "glacier {cache -c}			cache a package\n"
		printf "glacier {cache-install -ci}		install a cached package\n"
		printf "glacier {cache-clear -cc}		clear the package cache\n"
		printf "\n"
		printf "This program is free software: see the GNU GPL v3.0 for details.\n"
		exit 0
		;;
		--version)
		printf "$blue Glacier v2.0 $reset\n"
		exit 0
		;;
		install|-f)
		# Require the script to be run as root
		if [[ $(/usr/bin/id -u) -ne 0 ]]; then
    			printf "\033[1;31m [ \xE2\x9C\x95 ] \033[m Please run Glacier as root."
    			exit
		fi

		# Get package name and download package archive
		printf "\033[1;34m [ ? ] \033[m Enter package name: " && read input
		printf "\033[1;34m [ i ] \033[m Installing $input.tar.gz...\n"
		printf "\033[1;34m [ i ] \033[m Checking databases... " && wget $GREPO1/$input.tar.gz -q --show-progress || wget $GREPO2/$input.tar.gz -q --show-progress || wget $GREPO3/$input.tar.gz -q --show-progress || wget $GREPO4/$input.tar.gz -q --show-progress || wget $GREPO5/$input.tar.gz -q --show-progress || wget $GREPO6/$input.tar.gz -q --show-progress || wget $GREPO7/$input.tar.gz -q --show-progress || wget $GREPO8/$input.tar.gz -q --show-progress
		if [ "$?" != "0" ]; then
    			printf "\033[1;31m [ \xE2\x9C\x95 ] \033[m Package not found. " 1>&2
    			exit 1
		fi
		# Unpack Tarball
		printf "\033[1;34m [ i ] \033[m Unpacking $input.tar.gz...\n"
		mkdir $input && mv $input.tar.gz $input && cd $input
		tar -xf $input.tar.gz
			if [ "$?" != "0" ]; then
    				printf "\033[1;31m [ \xE2\x9C\x95 ] \033[m Could not unpack $input.tar.gz. " 1>&2
    				exit 1
			fi
		# Run installation hooks
		chmod +x INSTALL.sh
		chmod +x $input.ts.sh
		printf "$blue [ i ]$reset  The following instruction set will be executed:\n"
		cat INSTALL.sh
		printf "\033[1;34m [ i ] \033[m Executing installation instructions...\n"
		./INSTALL.sh
		./$input.ts.sh
		# Clean up
		printf "\033[1;34m [ i ] \033[m Cleaning up...\n"
		mv $input-pkginfo.json /etc/glacier/pkginfo
		cd ..
		rm -rf $input
		printf "\033[1;32m [ \xE2\x9C\x93 ] \033[m Operation completed.\n"
		exit 0
		;;
		update|-u)
		# Require Glacier to be run as root
		if [[ $(/usr/bin/id -u) -ne 0 ]]; then
    			printf "\033[1;31m [ $error ] \033[m Please run Glacier as root."
    			exit
		fi

		printf "\033[1;34m [ ? ] \033[m Enter package name: " && read input
		printf "\033[1;34m [ i ] \033[m Installing $input.tar.gz...\n"
		printf "\033[1;34m [ i ] \033[m Checking databases... " && wget $GREPO1/$input.tar.gz -q --show-progress || wget $GREPO2/$input.tar.gz -q --show-progress || wget $GREPO3/$input.tar.gz -q --show-progress || wget $GREPO4/$input.tar.gz -q --show-progress || wget $GREPO5/$input.tar.gz -q --show-progress || wget $GREPO6/$input.tar.gz -q --show-progress || wget $GREPO7/$input.tar.gz -q --show-progress || wget $GREPO8/$input.tar.gz -q --show-progress
			if [ "$?" != "0" ]; then
    				printf "\033[1;31m [ $error ] \033[m Package not found. " 1>&2
    				exit 1
			fi
		printf "\033[1;34m [ i ] \033[m Unpacking $input.tar.gz...\n"
		mkdir $input && mv $input.tar.gz $input && cd $input
		tar -xf $input.tar.gz
			if [ "$?" != "0" ]; then
    				printf "\033[1;31m [ $error ] \033[m Could not unpack $input.tar.gz. " 1>&2
    				exit 1
			fi
		rm /var/log/glacier/$input.timestamp
		chmod +x UPDATE.sh
		chmod +x $input.ts.sh
		printf "$blue [ i ]$reset The following instruction set will be executed:\n"
		cat UPDATE.sh
		printf "\033[1;34m [ i ] \033[m Executing update instructions...\n"
		./UPDATE.sh
		./$input.ts.sh
		printf "\033[1;34m [ i ] \033[m Cleaning up...\n"
		mv $input-pkginfo.json /etc/glacier/pkginfo
		mv $input.timestamp /var/log/glacier
		cd ..
		rm -rf $input
		printf "\033[1;32m [ $check ] \033[m Operation completed.\n"
		exit 0
		;;
		remove|-x)
		# Require the script to be run as root
		if [[ $(/usr/bin/id -u) -ne 0 ]]; then
    			printf "\033[1;31m [ $error ] \033[m Please run Glacier as root."
    			exit
		fi

		printf "\033[1;34m [ ? ] \033[m Enter package name: " && read input
		printf "\033[1;34m [ i ] \033[m Removing $input.tar.gz...\n"
		printf "\033[1;34m [ i ] \033[m Checking databases... " && wget $GREPO1/$input.tar.gz -q --show-progress || wget $GREPO2/$input.tar.gz -q --show-progress || wget $GREPO3/$input.tar.gz -q --show-progress || wget $GREPO4/$input.tar.gz -q --show-progress || wget $GREPO5/$input.tar.gz -q --show-progress || wget $GREPO6/$input.tar.gz -q --show-progress || wget $GREPO7/$input.tar.gz -q --show-progress || wget $GREPO8/$input.tar.gz -q --show-progress
			if [ "$?" != "0" ]; then
    				printf "\033[1;31m [ $error ] \033[m Package not found. " 1>&2
    				exit 1
			fi
		printf "\033[1;34m [ i ] \033[m Unpacking $input.tar.gz...\n"
		mkdir $input && mv $input.tar.gz $input && cd $input
		tar -xf $input.tar.gz
			if [ "$?" != "0" ]; then
    				printf "\033[1;31m [ $error ] \033[m Could not unpack $input.tar.gz. " 1>&2
    				exit 1
			fi
		chmod +x REMOVE.sh
		printf "$blue [ i ] $reset The following instruction set will be executed:\n"
		cat REMOVE.sh
		printf "$blue [ i ] $reset Executing removal instructions...\n"
		./REMOVE.sh
		rm /var/log/glacier/$input.timestamp
		printf "\033[1;34m [ i ] \033[m Cleaning up... \n" # Status message
		cd ..
		rm -rf $input
		rm /etc/glacier/pkginfo/$input-pkginfo.json
		printf "\033[1;32m [ $check ] \033[m Operation completed.\n"
		exit 0
		;;
		query|-q)
		printf "\033[1;34m [ ? ] \033[m Enter package name: " && read input
		cat /etc/glacier/pkginfo/$input-pkginfo.json
		cat /var/log/glacier/$input.timestamp
			if [ "$?" != "0" ]; then
    				printf "\033[1;31m [ $error ] \033[m Package not found. " 1>&2
    				exit 1
			fi
		exit 0
		;;
		cache|-c)
		# Require the script to be run as root
		if [[ $(/usr/bin/id -u) -ne 0 ]]; then
    			printf "\033[1;31m [ $error ] \033[m Please run Glacier as root."
    			exit
		fi

		printf "\033[1;34m [ ? ] \033[m Enter package name: " && read input
		printf "\033[1;34m [ i ] \033[m Caching $input.tar.gz...\n"
		printf "\033[1;34m [ i ] \033[m Checking databases... " && wget $GREPO1/$input.tar.gz -q --show-progress || wget $GREPO2/$input.tar.gz -q --show-progress || wget $GREPO3/$input.tar.gz -q --show-progress || wget $GREPO4/$input.tar.gz -q --show-progress || wget $GREPO5/$input.tar.gz -q --show-progress || wget $GREPO6/$input.tar.gz -q --show-progress || wget $GREPO7/$input.tar.gz -q --show-progress || wget $GREPO8/$input.tar.gz -q --show-progress
		if [ "$?" != "0" ]; then
    			printf "\033[1;31m [ $error ] \033[m Package not found. " 1>&2
    			exit 1
		fi
		mv $input.tar.gz /var/cache/glacier
		printf "\033[1;32m [ $check ] \033[m Operation completed."
		exit 0
		;;
		cache-install|-ci)
		# Require the script to be run as root
		if [[ $(/usr/bin/id -u) -ne 0 ]]; then
    			echo "$red[ $error ]$reset Please run Glacier as root."
    			exit
		fi

		printf "\033[1;34m [ ? ] \033[m Enter package name: " && read input
		printf "\033[1;34m [ i ] \033[m Checking cache for $input.tar.gz... "
		cd /var/cache/glacier && cp $input.tar.gz /tmp && cd /tmp
			if [ "$?" != "0" ]; then
    				printf "\033[1;31m [ $error ] \033[m Could not fetch package from cache. " 1>&2
    				exit 1
			fi
		printf "\033[1;34m [ i ] \033[m Unpacking $input.tar.gz... "
		mkdir $input && mv $input.tar.gz $input && cd $input
		tar -xf $input.tar.gz
			if [ "$?" != "0" ]; then
    				printf "\033[1;31m [ $error ] \033[m Could not unpack $input.tar.gz. " 1>&2
    				exit 1
			fi
		chmod +x INSTALL.sh
		chmod +x $input.ts.sh
		./INSTALL.sh # Actually executes installation script
		./$input.ts.sh
		printf "\033[1;34m [ i ] \033[m Cleaning up... " # Status message
		mv -v $input-pkginfo.json /etc/glacier/pkginfo
		cd ..
		rm -rvf $input
		printf "\033[1;32m [ $check ] \033[m Operation completed."
		exit 0
		;;
		cache-clear|-cc)
		# Require the script to be run as root
		if [[ $(/usr/bin/id -u) -ne 0 ]]; then
    			printf "\033[1;31m [ $error ] \033[m Please run Glacier as root."
    			exit
		fi

		printf "\033[1;34m [ i ] \033[m Clearing cache... "
		cd /var/cache/glacier && rm *
		printf "\033[1;32m [ $check ] \033[m Cache cleared."
		exit 0
		;;
		-*|--*)
		printf "$red [ $error ]$reset Unknown option, use 'glacier -h' to see usage."
		exit 1
		;;
		*)
		printf "$red [ $error ]$reset Unknown option, use 'glacier -h' to see usage."
		exit 1
		;;
	esac
done