#!/usr/bin/env bash

# execute self with sudo if user is not root
[[ $UID -ne 0 ]] && exec sudo ./"$0"

###
# Set variables
###
export DEBIAN_FRONTEND=noninteractive
DPKG_CFG_FRAGMENT=/etc/dpkg/dpkg.cfg.d/non-interactive

# Linux distro
script_distro='Linux Mint 20'

# Additional packages
packages=(
  # Graphics
  gimp
  inkscape
  pinta

  # Office
  libreoffice

  # Security
  keepassxc

  # Games
  0ad
  beneath-a-steel-sky
  billard-gl
  blobby
  blockout2
  flight-of-the-amazon-queen
  freeciv
  frozen-bubble
  gbrainy
  gnome-games
  gweled
  hedgewars
  lincity-ng
  lure-of-the-temptress
  minetest
  openttd
  pingus
  pipewalker
  pokerth
  supertux
  supertuxkart
  teeworlds
  wesnoth
  widelands

  # Gaming platforms
  playonlinux
  steam
  wine-stable
  winetricks

  # System management
  gparted

  # Tools
  f3
  hardinfo
  regionset
  vim

  # Media
  cheese
  vlc

  # Knowledge (incl. programs from the former ubunbu-edu-* meta packages)
  blinken
  calibre
  cantor
  chemtool
  dia
  einstein
  fritzing
  gamine
  gcompris
  goldendict
  inkscape
  kalgebra
  kalzium
  kanagram
  kbruch
  kgeography
  khangman
  kig
  klettres
  kmplot
  kstars
  ktouch
  ktuberling
  kturtle
  kwordquiz
  laby
  lightspeed
  lybniz
  marble
  melting
  parley
  pencil2d
  ri-li
  rocs
  step
  tuxmath
  tuxpaint
  tuxtype
  yorick

  # Language support
  language-selector-common
  openoffice.org-hyphenation
  language-pack-ar
  language-pack-gnome-ar
  language-pack-fa
  language-pack-gnome-fa
)

###
# Functions
###

# $*: message to echo
e() {
  printf "\e[31m>>>\e[0m %s\n" "$*"
}

# It's a pain to stop (ctrl+c, kill) execution with all the Python applications
# so we catch SIGINT and SIGTERM and exit immediately
handle_signal() {
  e "Ausführung abgebrochen! Skript wird beendet."
  exit 1
}

# always executed on shell exit regardless of reason. for cleanup tasks
handle_exit() {
  e "Finales Cleanup wird durchgeführt …"
  rm -f "$DPKG_CFG_FRAGMENT"
}

trap handle_signal SIGINT SIGTERM
trap handle_exit EXIT

pkg() {
  apt install "$@" --yes --quiet
}

###
# Greeting
###
echo "\
#####################################
# Computertruhe-Installationsskript #
#####################################

###
# Maintainer: Computertruhe e. V.
# Website:    https://computertruhe.de/
# Version:    1.0.0
# Repo:       https://codeberg.org/Computertruhe/computertruhe-setup
# Distro:     ${script_distro}
###
"
e "Starte initiales Setup für Rechner mit frisch installiertem '${script_distro}' …"

###
# Automatic installation
###
# place temporary dpkg configurations to ensure non-interactive upgrade
cat <<'DPKG' >"$DPKG_CFG_FRAGMENT"
force-confold
force-confdef
DPKG

e "Automatische Installation empfohlener Pakete aktivieren …"
cat <<'EOF' > /etc/apt/apt.conf.d/00recommends
APT::Install-Recommends "true";
Aptitude::Recommends-Important "true";
EOF

e "Besten Spiegelserver für '${script_distro}' auswählen …"
mint-switch-to-local-mirror

e "Paketquellen aktualisieren …"
apt update --yes --quiet

e "System aktualisieren (apt) …"
apt full-upgrade --yes --quiet

e "System aktualisieren (mintupdate-cli) …"
mintupdate-cli --yes upgrade

e "Proprietäre Treiber installieren (sofern verfügbar) …"
ubuntu-drivers autoinstall

e "Zusätzliche Software installieren …"
pkg "${packages[@]}"

e "Sprachunterstützung vervollständigen …"
pkg "$(check-language-support)"
# these packages have to be installed after "$(check-language-support)"
pkg hunspell-de-at hunspell-de-ch hunspell-de-de

e "Unnötige Pakete entfernen und Cache bereinigen …"
apt clean --yes --quiet
apt autoremove --yes --quiet

# https://askubuntu.com/questions/1037553/how-to-configure-a-dconf-key-globally-across-all-user-accounts#1037557
# https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/7/html/desktop_migration_and_administration_guide/custom-default-values-system-settings
e "Tastatur- und Desktop-Optionen anpassen …"
mkdir -vp /etc/dconf/{profile,db/local.d}

cat <<'EOF' > /etc/dconf/profile/user
user-db:user
system-db:local
EOF

cat <<'EOF' > /etc/dconf/db/local.d/00-keyboard-layout
[org/gnome/libgnomekbd/keyboard]
layouts=['de', 'ara', 'ir']

[org/cinnamon/desktop/interface]
keyboard-layout-show-flags=false
keyboard-layout-use-upper=true
keyboard-layout-prefer-variant-names=true
EOF

dconf update

###
# Finalisation
###
e "Initiales Setup beendet."