#!/bin/bash

# This is Telegram update script for Porteus
# Version 2026-01-03

# Copyright 2023-2030, Blaze, Dankov, Russia
# All rights reserved.
#
# Redistribution and use of this script, with or without modification, is
# permitted provided that the following conditions are met:
#
# 1. Redistributions of this script must retain the above copyright
#    notice, this list of conditions and the following disclaimer.
#
#  THIS SOFTWARE IS PROVIDED BY THE AUTHOR "AS IS" AND ANY EXPRESS OR IMPLIED
#  WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
#  MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO
#  EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
#  SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
#  PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
#  OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
#  WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
#  OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
#  ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

# root check
if [ `whoami` != "root" ]; then
    echo -e "\nYou need to be root to run this script.\n"
    exit 1
fi

PRGNAM=${PRGNAM:-telegram}
SRCDIR=Telegram
BUILD=${BUILD:-1}
RPMBUILD=${RPMBUILD:-0}
ARCH=$( uname -m )
VERSION=$(lynx -head -dump "https://github.com/telegramdesktop/tdesktop/releases/latest" | grep Location | grep -o "[0-9].*$")
SOURCE=$(echo https://updates.tdesktop.com/tlinux/tsetup.${VERSION}.tar.xz)
TICON=$(echo 'https://slackbuilds.org/slackbuilds/15.0/network/telegram/telegram.png')
BOLD=${BOLD:-"\e[1m"}
CYAN=${CYAN:-"\e[96m"}
GREEN=${GREEN:-"\e[92m"}
RED=${RED:-"\e[31m"}
RESET=${RESET:-"\e[0m"}
CWD=$(pwd)
TMPDIR=/tmp/portch
PKG=$TMPDIR/package-$PRGNAM
PKGINFO=$PKG/var/lib/pkgtools/packages
OUTPUT=${OUTPUT:-/tmp}

cleanup(){
[ -d $TMPDIR ] && rm -rf $TMPDIR
[ -d $PKG ] && rm -rf $PKG
exit	
}

# check if telegram installed in the system
if [[ -f "/opt/telegram/Telegram" ]]; then
  MYVER=${MYVER:-`basename /var/lib/pkgtools/packages/telegram* | cut -d'-' -f2`}
fi

if [ "$MYVER" == "$VERSION" ]; then
    echo -e "You have the latest ${GREEN}$MYVER${RESET} version of $PRGNAM"
    sleep 5
    exit
else
    read -p "$(echo -e Would you like to build $PRGNAM ${GREEN}$VERSION${RESET} xzm module? [y/n])" -n 1 -r -s && echo
    if [[ $REPLY =~ ^[Yy]$ ]]; then
        echo "We continue the execution of the $0 script" &>/dev/null
        else
        exit
    fi
fi

rm -rf $PKG
mkdir -p $TMPDIR $PKG/usr/bin $PKG/opt/$PRGNAM $PKG/usr/share/applications $PKG/usr/share/pixmaps
cd $TMPDIR

# download and extract telegram
echo -e "\nDownloading ${CYAN}${BOLD}${PRGNAM}-${VERSION}${RESET}"
wget -q --show-progress "$SOURCE"
tar xf tsetup.${VERSION}.tar.xz

cd $SRCDIR
chown -R root:root .
find -L . \
 \( -perm 777 -o -perm 775 -o -perm 750 -o -perm 711 -o -perm 555 \
  -o -perm 511 \) -exec chmod 755 {} \; -o \
 \( -perm 666 -o -perm 664 -o -perm 640 -o -perm 600 -o -perm 444 \
  -o -perm 440 -o -perm 400 \) -exec chmod 644 {} \;

cp -a * $PKG/opt/$PRGNAM

find $PKG -print0 | xargs -0 file | grep -e "executable" -e "shared object" | grep ELF \
  | cut -f 1 -d : | xargs strip --strip-unneeded 2> /dev/null || true

# create a symlink at Telegram to usr/bin
ln -sf /opt/$PRGNAM/Telegram $PKG/usr/bin

# create telegram.desktop
touch $PKG/usr/share/applications/$PRGNAM.desktop
cat >> $PKG/usr/share/applications/$PRGNAM.desktop << EOM
[Desktop Entry]
Name=Telegram
GenericName=Internet
Comment=Telegram Desktop Chat Client
Comment[ru]=Telegram чат клиент для ПК
Icon=telegram
Exec=Telegram -- %u
TryExec=Telegram
Terminal=false
Type=Application
Categories=Network;
EOM

# download Telegram icon
wget -q -P $PKG/usr/share/pixmaps ${TICON}

cd $PKG

### fake Slackware type package info: super dumb version
mkdir -p $PKGINFO
echo "PACKAGE NAME: $PRGNAM-$VERSION-$ARCH" > $PKGINFO/$PRGNAM-$VERSION-$ARCH

cat >> $PKGINFO/$PRGNAM-$VERSION-$ARCH << EOM
PACKAGE DESCRIPTION:
telegram: telegram (messaging app)
telegram:
telegram: telegram is a cloud-based mobile and desktop messaging app
telegram: with a focus on security and speed.
telegram:
telegram: https://telegram.org/
telegram:
FILE LIST:
EOM

find * | grep -v var >> $PKGINFO/$PRGNAM-$VERSION-$ARCH

dir2xzm $PKG $OUTPUT/$PRGNAM-$VERSION-$ARCH-$BUILD.xzm

# check on telegram xzm file exists in /tmp
if [ -f "$OUTPUT/${PRGNAM}-${VERSION}-${ARCH}-${BUILD}.xzm" ]; then
    echo -e "\n${BOLD}Your $PRGNAM module is at: ${GREEN}${BOLD}$OUTPUT/$PRGNAM-$VERSION-${ARCH}-${BUILD}.xzm${RESET}\n${BOLD}Please copy it to your modules folder to survive a reboot.${RESET}\n"
else
    echo -e "\n${RED}${BOLD}Faile. Your $PRGNAM module is not built.${RESET}\n"
fi
cleanup