deploy

#!/bin/bash

# Install (or reinstall to update!) the controller on a fresh raspbian install
#
# If you want to prevent fs resize on first raspbian boot,
# remove "init=/usr/lib/raspi-config/init_resize.sh" from /boot/cmdline.txt
#
# Then ,creating image from SD card and shrink it:
#
# # install pishrink.sh from https://github.com/Drewsif/PiShrink
# wget https://raw.githubusercontent.com/Drewsif/PiShrink/master/pishrink.sh
# chmod +x pishrink.sh
# sudo mv pishrink.sh /usr/local/bin
# # copy SD to disk
# sudo dd if=/dev/disk2 | pv | dd bs=4m of=Downloads/crazyschool-raspberrypi-<date>.img
# sudo pishrink.sh !$
# scp !$ mien.ch:/var/www/mien.ch/static/crazyschool/.

###
### Script configuration
###
BASEDIR="/home/pi/crazyschool/activity-controller"

echo
echo -e "\033[1m\e[35m* Crazyschool activity-controller software installer for Raspberry Pi !\e[0m"

if [ "$1" == "replace-ini" ]
then
    echo
    echo -e "\033[33m* File crazyschool.ini will be replaced with version from repository (option: -s replace-ini)\e[0m"
    REPLACE_INI=1
else
    echo
    echo -e "\033[33m* File crazyschool.ini be kept to its local version (to replace with version from repository, use option: -s replace-ini)\e[0m"
    REPLACE_INI=0
fi

###
### Bootstrap: updating operating system first
###
# FIXME: on Raspbian 11 Bullseye, the update breaks vlc
# echo
# echo -e "\033[1m* Updating operating system...\e[0m"
# sudo apt-get update && sudo apt-get -y upgrade

# clone git repository, saving the existing in case of failure (eg. invalid credentials)
if ! git --version &> /dev/null
then
    sudo apt-get install -y --no-install-recommends git
fi

###
### Installing core software
###
echo -e "\033[1m* Installing crazyschool software, please enter your github credentials below:\e[0m"
TMPDIR=$BASEDIR-tmp
if git clone git@github.com:crazyschool/activity-controller.git $TMPDIR
then
    mv $BASEDIR/venv $TMPDIR/venv &> /dev/null # reuse venv if possible
    BACKUP=/tmp/crazyschool-deploy-backup-environment
    mkdir -p $BACKUP
    mv $BASEDIR/environment/activity/* $BACKUP/.
    sudo rm -rf $BASEDIR  # FIXME: some file belong to root in $BASEDIR, it shouldn't: rm: cannot remove '/home/pi/crazyschool/activity-controller/environment/service/__pycache__/__main__.cpython-37.pyc': Permission denied
    mv $TMPDIR $BASEDIR
else
    echo -e "\091[m* Failed to clone github repository, exiting.\e[0m"
    rm -rf $TMPDIR
    exit 1
fi
cd $BASEDIR
# FIXME: explicit master branch checkout
# for update on installations that were using branch dev
git checkout master
# UPGRADE TO 0.0.50: overwrite chrome script
mkdir -p /tmp/crazyschool-environment-activity-backup
cp -r $BASEDIR/environment/activity/. /tmp/crazyschool-environment-activity-backup/.
#
cp -r $BACKUP/* $BASEDIR/environment/activity/.
rm -rf $BACKUP

# UPGRADE TO 0.0.50
cp /tmp/crazyschool-environment-activity-backup/qcm/chrome $BASEDIR/environment/activity/qcm/chrome

###
### System infrastructure
###
echo
echo -e "\033[1m* Installing dependencies... \e[0m "
PKGS=()  # collecting packages names and installiing them at once speeds up the process

sudo touch /boot/ssh
PKGS+=(python3 python3-pip python3-venv python3-dev gcc) # python infrastructure
PKGS+=(vim screen) # nice to have

# per activity dependencies
PKGS+=(xserver-xorg xserver-xorg-legacy x11-xserver-utils xinit openbox chromium-browser sed) # activity: qcm
PKGS+=(mpg123) # activity: bell
PKGS+=(vlc) # activity: videoplay

# install all packages at once
sudo apt-get install -y --no-install-recommends ${PKGS[*]}
sudo apt-get autoremove -y
#sudo apt-get clean && sudo rm -r /var/lib/apt/lists/* # cleaning


###
### Dependencies configuration installation
###

# activity: QCM
# install GUI (X and chrome browser)
# from https://die-antwort.eu/techblog/2017-12-setup-raspberry-pi-for-kiosk-mode/
# allow starting x as user: https://gist.github.com/alepez/6273dc5220c1c5ec5f3f126e739d58bf
#sudo usermod -a -G tty pi # not needed
sudo cp /etc/X11/Xwrapper.config /etc/X11/Xwrapper.config.orig
sudo sed -i 's/allowed_users=console/allowed_users=anybody/g' /etc/X11/Xwrapper.config
# TODO: fix locale
# TODO in /boot/config.txt:
# - force HDMI video output
# - force JACK audio output
# - raspi memory split ?

###
### Activity-controller software deployment and system setup
###

# download activity-controller software: done in Boostrap section above

# make venv and install requirements.txt
if [ ! -d "$BASEDIR/venv" ]
then
    echo "Creating python venv at $BASEDIR/venv"
    python3 -m venv $BASEDIR/venv
fi
echo "Updating python venv"
. $BASEDIR/venv/bin/activate && pip3 install -r requirements.txt
deactivate

# create crazyschool configuration file on /boot partition
if [[ ! -f "/boot/crazyschool.ini" || $REPLACE_INI == 1 ]]
then
    echo "Creating default /boot/crazyschool.ini"
    sudo cp $BASEDIR/environment/crazyschool.ini.example /boot/crazyschool.ini
fi
# TODO: set static IP for first access

TIMEZONE="Europe/Paris"
echo
echo -e "\033[1m* Setting timezone to $TIMEZONE\e[0m "
sudo timedatectl set-timezone $TIMEZONE

# setup systemd services
echo -e "\033[1m* Setting up systemd services...\e[0m "
echo "Updating services definitions"
# sudo rm -rf /etc/systemd/system/crazyschool*  # Note: this erases `crazyschool.device@historifrise`
sudo cp $BASEDIR/environment/systemd/services/* /etc/systemd/system/.
sudo systemctl daemon-reload

echo "Configuring journalctl for logs persistence and file size limit"
sudo mkdir -p /etc/systemd/journald.conf.d
sudo su -c 'echo "[Journal]
Storage=persistent
SystemMaxFileSize=500M" > /etc/systemd/journald.conf.d/crazyschool.conf'

# enable crazyschool services manager
echo "Running crazyschool.service to enable services defined in crazyschool.ini"
sudo systemctl start crazyschool.service
sleep 2
echo "Restarting services"
sudo systemctl restart crazyschool.* systemd-journald.service

# all good
echo
echo -e "\033[1m* Done.\e[0m "
echo "Open http://$(hostname -I | cut -d ' ' -f 1):8000 to access this activity-controller web interface"
echo "Edit /boot/crazyschool.ini to customize configuration"
echo "View running services by typing: systemctl list-units crazyschool.*"
echo "View logs by typing: journalctl -n100 -f -u crazyschool.*"
echo

# Write before login message
# TODO: add to /etc/issue ?
#       https://superuser.com/questions/290294/how-to-display-a-message-before-login