initial-prep.sh

#! /bin/bash

base_dir=$(pwd)'/'


main() {
	sudo echo  # prompt for sudo-password

	# warn if running as root
	if [ "$EUID" -eq 0 ]; then
		echo "You are running as root (not recommended), the setup will be configured for the user 'root' only, are you sure you want to continue?"
		echo "[y/n?]"
		read -r choice
		if [[ "${choice,,}" == "y" ]]; then
			echo "proceeding"
		elif [[ "${choice,,}" == "n" ]]; then
			echo "Run again with desired user."
			exit
		else
			echo "Not what I asked for. I dont have time for this shit :)"
			exit
		fi
	fi

	# check packages.txt exists
	if [ ! -f "packages.txt" ]; then
		echo -e "'packages.txt' is missing, please create it before running again.\n\nYou can add the packages you wish to install through 'apt' to the 'packages.txt' file, as shown:\n"
		echo -e "package1_name\npackage2_name\n.\n.\n.\n"
	fi

	sudo rm /tmp/DROPZONE/ -rf && mkdir -p /tmp/DROPZONE/install_results

	run_installation_routine 2>> /tmp/DROPZONE/install_results/errors

	# print the errors (if any)
	echo -e "\n\n\n***** ERRORS ENCOUNTERED *****\n\n\n"
	cat /tmp/DROPZONE/install_results/errors

	# show undervolt stats
	echo -e "\n\n\n***** UNDERVOLTING STATUS *****\n\n\n"
	sudo undervolt --read

	# show headphone jack state
	echo -e "\n\n\n***** HEADPHONE JACK MICROPHONE FIX *****\n\n\n"
	echo -e "${mic_fix_state}\n\n"
}

install_bitwarden_deb () {
	echo -e "\n# Installing Bitwarden...\n"
	wget "https://vault.bitwarden.com/download/?app=desktop&platform=linux&variant=deb" -O /tmp/DROPZONE/bitwarden.deb && sudo apt install /tmp/DROPZONE/bitwarden.deb -y
}

install_discord_deb () {
	echo -e "\n# Installing Discord...\n"
	wget "https://discord.com/api/download?platform=linux&format=deb" -O /tmp/DROPZONE/discord.deb && sudo apt install /tmp/DROPZONE/discord.deb -y  # Discord
}

install_burpsuite_sh () {
	echo -e "\n# Installing Burpsuite...\n"
	wget "https://portswigger.net/burp/releases/download?product=community&version=2020.12.1&type=Linux" -O /tmp/DROPZONE/burpsuite.sh && chmod 755 /tmp/DROPZONE/burpsuite.sh && sudo /tmp/DROPZONE/burpsuite.sh  # BurpSuite
}

install_zoom_deb () {
	echo -e "\n# Installing Zoom...\n"
	wget "https://zoom.us/client/latest/zoom_amd64.deb" -O /tmp/DROPZONE/zoom.deb && sudo apt install /tmp/DROPZONE/zoom.deb -y  # Zoom
}

install_docker_apt () {
	echo -e "\n# Installing Docker...\n"
	sudo apt-get remove -y docker* && sudo apt install docker.io -y && sudo systemctl start docker && sudo systemctl enable docker  # Docker
}

install_vivaldi_ppa () {
	echo -e "\n# Installing Vivaldi browser...\n"
	wget -qO- https://repo.vivaldi.com/archive/linux_signing_key.pub | gpg --dearmor > packages.vivaldi.gpg
	sudo install -o root -g root -m 644 packages.vivaldi.gpg /etc/apt/trusted.gpg.d
	sudo sh -c 'echo "deb [arch=amd64,armhf signed-by=/etc/apt/trusted.gpg.d/packages.vivaldi.gpg] https://repo.vivaldi.com/archive/deb stable main" > /etc/apt/sources.list.d/vivaldi.list' 
	rm -f packages.vivaldi.gpg
	sudo apt update && sudo apt install vivaldi-stable -y
}

install_vscode_ppa () {
	echo -e "\n# Installing VSCode browser...\n"
	wget -qO- https://packages.microsoft.com/keys/microsoft.asc | gpg --dearmor > packages.microsoft.gpg
	sudo install -o root -g root -m 644 packages.microsoft.gpg /etc/apt/trusted.gpg.d/
	sudo sh -c 'echo "deb [arch=amd64,arm64,armhf signed-by=/etc/apt/trusted.gpg.d/packages.microsoft.gpg] https://packages.microsoft.com/repos/code stable main" > /etc/apt/sources.list.d/vscode.list'
	rm -f packages.microsoft.gpg
	sudo apt update && sudo apt install code -y
}

install_gitpack () {
	wget -qO- https://raw.githubusercontent.com/dominiksalvet/gitpack/master/.install/initg.sh | sudo sh
}

apply_undervolting () {
	# undervolting the CPU and GPU using "undervolt"
	sudo pip3 install undervolt
	sudo cp "${base_dir}"undervolt.service /etc/systemd/system/undervolt.service
	sudo systemctl daemon-reload && sudo systemctl enable undervolt.service && sudo systemctl start undervolt.service
}

disable_intel_turbo_boost (){
	# disable the intel turbo boost technology that leads to CPU spikes
	sudo cp "${base_dir}"turbo-boost.sh /root/turbo-boost.sh && sudo chmod 755 /root/turbo-boost.sh && sudo /root/turbo-boost.sh disable
	sudo bash -c 'echo -e "@reboot /root/turbo-boost.sh disable\n" >> /var/spool/cron/crontabs/root'
}

apply_fan_noise_fix () {
	# fix fan noise using asus-fan-control
	install_gitpack
	sudo gitpack install github.com/dominiksalvet/asus-fan-control
	sudo systemctl enable afc.service
	sudo asus-fan-control set-temps 51 55 65 68 71 74 77 80
}

is_modprob_fix_possible () {
	which "modprobe" > /dev/null && sudo cat /proc/asound/card*/codec* | grep Codec | grep "ALC23" > /dev/null;
}

apply_modprob_fix () {
	# fix undetected headphone jack microphone
	# found fix here: https://superuser.com/questions/1312970/headset-microphone-not-detected-by-pulse-und-alsa
	is_modprob_fix_possible
	if [[ $? -eq 0 ]]; then
		sudo bash -c 'echo "options snd-hda-intel model=dell-headset-multi" >> /etc/modprobe.d/alsa-base.conf'
		mic_fix_state="modprobe installed and correct card identified. Fix was attempted. The following is the tail of 'alsa-base.conf' file:\n\n";
		mic_fix_state+=$(tail /etc/modprobe.d/alsa-base.conf)
	else
		mic_fix_state="ERROR: either modprobe was not found or the device has incompatible sound card. Fix was not applied.";
	fi
}

run_installation_routine () {
	# perform updates before starting
	echo -e "\n# Updating repos...\n"
	sudo add-apt-repository universe && sudo add-apt-repository multiverse
	sudo apt-get update -y && sudo apt-get upgrade -y && sudo apt-get dist-upgrade -y;

	# install desired apt packages
	sudo xargs -r -a packages.txt apt-get install -y

	# install desired .deb packages
	install_bitwarden_deb
	install_discord_deb
	install_burpsuite_sh
	install_zoom_deb
	install_docker_apt

	# add and install ppa repositories
	install_vivaldi_ppa
	install_vscode_ppa

	# apply fixes and tweaks
	apply_undervolting
	disable_intel_turbo_boost
	apply_fan_noise_fix
	apply_modprob_fix

	# install themes
	sudo tar xvf "${base_dir}"theme_files/icons/candy-icons.tar.xz -C /usr/share/icons
	sudo tar xvzf "${base_dir}"theme_files/icons/oreo_spark_purple_cursors.tar.gz -C /usr/share/icons
	sudo tar xvf "${base_dir}"theme_files/themes/Sweet-Dark.tar.xz -C /usr/share/themes

	# clean up and adjust system settings
	cat "${base_dir}"add_to_bashrc.txt >> ~/.bashrc  # modify .bashrc
	cp "${base_dir}"switch-mode.sh ~/Desktop/switch.sh && chmod 755 ~/Desktop/switch.sh  # switch-mode script installation
	sudo apt autoremove -y
	sudo updatedb
}


main "$@"; exit