#!/bin/bash

log() {
  if [[ $2 != "" ]]; then
    printf "\n[ERRO] $1\n"
    cat <<EOF 

The program has stopped due to the above error
If you believe this is a bug, please report it.
If you are having issues please ask for help from Geckoboard support

Press any key to exit
EOF

    # Give the user time to see this message
    read
    exit 127
  else
    printf "\n[INFO] $1\n"
  fi
}

upgrade_system() {
  sudo apt -qq upgrade -y
  sudo apt -qq autoremove -y > /dev/null
}

install_color_emoji() {
  NOTOEMOJI_ZIPFILE=noto_color_emoji.zip
  FONT_STORE=$HOME/.local/share/fonts
  NOTOEMOJI_DIR=noto_color_emoji

  curl -o $NOTOEMOJI_ZIPFILE https://noto-website-2.storage.googleapis.com/pkgs/NotoColorEmoji-unhinted.zip
  unzip $NOTOEMOJI_ZIPFILE -d $NOTOEMOJI_DIR

  mkdir -p $FONT_STORE

  mv $NOTOEMOJI_DIR/*.ttf $FONT_STORE/
  rm -r $NOTOEMOJI_DIR || true
  rm $NOTOEMOJI_ZIPFILE || true
}

check_raspberrypi() {
  if ! `lsb_release -a | grep -Eq "Raspbian|Debian"`; then
    log "this device appears not to be running raspbian os" 1
  fi

  if ! `uname -m | grep -Eq "armv|aarch64"` ; then
    log "this device doesn't appear to be a raspberry pi" 1
  fi

  if ! [[ "$DESKTOP_SESSION" == "rpd-labwc" ]]; then
    log "this device isn't running a supported desktop environment", 1
  fi
}

CHROME_PWDSTORE_SWITCH=""

install_kiosk_script() {
  GECKOBOARD_KIOSK_FILE=$HOME/.local/geckoboard_kiosk_mode
  LABWC_CONFIG_PATH=$HOME/.config/labwc
  LABWC_AUTOSTART=$LABWC_CONFIG_PATH/autostart

cat > $GECKOBOARD_KIOSK_FILE <<EOF
#!/bin/bash

# Ensure that if we have a power cut or bad shutdown that
# the chromium preferences are reset to a "good" state so we
# don't get the restore previous session dialog
sed -i 's/"exited_cleanly":false/"exited_cleanly":true/' $HOME/.config/chromium/Default/Preferences
sed -i 's/"exit_type":"Crashed"/"exit_type":"Normal"/' $HOME/.config/chromium/Default/Preferences

# Disable any installed extentions and the default browser check and error dialogs
chromium \
$CHROME_PWDSTORE_SWITCH \
--kiosk \
--disable-extensions \
--no-default-browser-check \
https://app.geckoboard.com/tv

EOF

  mkdir -p $LABWC_CONFIG_PATH
  chmod +x $GECKOBOARD_KIOSK_FILE

  if grep -Fxq "$GECKOBOARD_KIOSK_FILE" $LABWC_AUTOSTART; then
    echo "[SKIP] kiosk mode already setup"
  else
    echo "$GECKOBOARD_KIOSK_FILE &" >> $LABWC_AUTOSTART
  fi
}

# Display logo and intro to user
# ASCII display generated at https://www.ascii-art-generator.org/

cat <<EOF
   _____ ______ _____ _  ______  ____   ____          _____  _____ 
  / ____|  ____/ ____| |/ / __ \|  _ \ / __ \   /\   |  __ \|  __ \ 
 | |  __| |__   |    | ' / |  | | |_| | |  | | /  \  | |__| | |  | | 
 | | |_ |  __|  |    |  <  |  | |  _ <| |  | |/ /\ \ |  _  /| |  | | 
 | |__| | |___  |____| ' \ |__| | |_| | |__| / ____ \| | \ \| |__| | 
  \_____|______\_____|_|\_\____/|____/ \____/_/    \_\_|  \_\_____/ 


We will guide you through setting up your device optimized to display Geckoboard.
Along the way you will have the option to not do some things for which you can just press enter

The questions which will be asked will be just require either y for Yes or n for No
by default the answer will assume No (y/N) declared by the capital N in these cases you can just press enter

We will do the following;
 - Upgrade your raspbian OS with the latest updates
 - Ensure Chromium is installed and the latest version available
 - Install color emoji support
 - Install Microsoft core fonts 
 - Install a script which will start chromium at Geckoboard on each startup

 This process should only take a few minutes
 If you are ready press any key to start
EOF

read

check_raspberrypi

log "getting latest packages"
sudo apt update -y

printf "do you want to install latest updates (it might take 10+ mins) [y/N]:"
read upgr
if [[ $upgr == "y" ]]; then
  log "updating os packages"
  upgrade_system
fi

log "installing latest chromium browser"
sudo apt install -y chromium > /dev/null

log "installing mscore fonts"
sudo apt install -y ttf-mscorefonts-installer > /dev/null

log "installing color emoji support"
install_color_emoji > /dev/null

log "setting up Geckoboard kiosk mode"

printf "\nTo prevent default keyring requesting password input when opening Chrome\n"
printf "We're going to instruct Chrome to store passwords unencrypted in its own store\n"
printf "This would be the same as setting no password in your keyring\n"
printf "If you intend to store the passwords in Chrome for websites\n"
printf "It would be highly recommended not to use the unencrypted password store\n\n"

printf "Do you want to use unencrypted password store for Chrome? [y/N]:"

read disableKeyring

if [[ "$disableKeyring" == "y" ]]; then
  CHROME_PWDSTORE_SWITCH="--password-store=basic"
fi

install_kiosk_script

cat <<EOF

************ Setup complete ***********

Check out the send to TV support article on how to pair your device with Geckoboard
Now you are ready to reboot the raspberry pi.

When raspberry pi next starts up it should display the TV pin code

http://bit.ly/gbontvdoc

You'll be empowering your team to be the best in no time

When you are ready press any key to reboot. 
EOF

read
sudo reboot