#!/bin/bash

# Stop on the first sign of trouble
set -e

USERNAME=''
WEBSERVER="apache"
SILENT_INSTALL=false
RUNNING_ON_PI=true
RASPBERRY_PI_5=false
FORCE_RASPBERRY_PI=false
DATE=$(date +"%Y%m%d-%H-%M")
IPADDRESS=$(hostname -I | cut -d " " -f 1)
PHOTOBOOTH_TMP_LOG="/tmp/$DATE-photobooth.txt"

BRANCH="dev"
GIT_INSTALL=true
SUBFOLDER=true
KIOSK_MODE=false
HIDE_MOUSE=false
USB_SYNC=false
SETUP_CUPS=false
GPHOTO_PREVIEW=false
MJPEG_PREVIEW=false
MJPEG_PREVIEW_ONLY=false
CUPS_REMOTE_ANY=false
WEBBROWSER="unknown"
KIOSK_FLAG="--kiosk http://localhost"
CHROME_FLAGS=false
CHROME_DEFAULT_FLAGS="--noerrdialogs --disable-infobars --disable-features=Translate --no-first-run --check-for-update-interval=31536000 --touch-events=enabled --password-store=basic"
AUTOSTART_FILE=""
DESKTOP_OS=true
WAYLAND_ENV=true
PHP_VERSION="8.3"
GO2RTC_VERSION="v1.8.6-4"

# Update
RUN_UPDATE=false
BACKUPBRANCH="backup-$DATE"
PHOTOBOOTH_FOUND=false
PHOTOBOOTH_PATH=(
    '/var/www/html'
    '/var/www/html/photobooth'
)
PHOTOBOOTH_SUBMODULES=(
    'vendor/rpihotspot'
    'vendor/Seriously'
)

# Node.js
NEEDS_NODEJS_CHECK=true
NODEJS_CHECKED=false
NODEJS_MAJOR="18"
NODEJS_MINOR="17"
NODEJS_MICRO="0"
NEEDED_NODE_VERSION="v$NODEJS_MAJOR.$NODEJS_MINOR(.$NODEJS_MICRO or newer)"
NEEDS_NPM_CHECK=true

COMMON_PACKAGES=(
    'gphoto2'
    'libimage-exiftool-perl'
    'nodejs'
    "php${PHP_VERSION}-gd"
    "php${PHP_VERSION}-xml"
    "php${PHP_VERSION}-zip"
    "php${PHP_VERSION}-mbstring"
    'python3'
    'rsync'
    'udisks2'
)

EXTRA_PACKAGES=(
    'curl'
    'gcc'
    'g++'
    'make'
)

INSTALL_PACKAGES=()

DEBIAN=(
    'buster'
    'bullseye'
    'bookworm'
)

function info {
    echo -e "\033[0;36m${1}\033[0m"
    echo "${1}" >>"$PHOTOBOOTH_TMP_LOG"
}

function warn {
    echo -e "\033[0;33m${1}\033[0m"
    echo "WARN: ${1}" >>"$PHOTOBOOTH_TMP_LOG"
}

function error {
    echo -e "\033[0;31m${1}\033[0m"
    echo "ERROR: ${1}" >>"$PHOTOBOOTH_TMP_LOG"
}

function print_spaces() {
    echo ""
    info "###########################################################"
    echo ""
}

function print_logo() {
    echo "


                    @@@@@@@@@@@@@@@@@@@
                   @@.               .@@
     %@@@@@@.     @@     @@@@@@@@@     @@
    @@@    @@*   @@.                   .@@
  &@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@&
@@@%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%@@@
@@                                                       @@
@@                     @@@@@@@@@@@@@.        *@@  @@@@@  @@
@@                  @@@@           @@@@                  @@
@@@@@@@@@@@@@@@@@@@@@    #@@@@@@@#    @@@@@@@@@@@@@@@@@@@@@
@@              @@@   @@@@(     (@@@@   @@@              @@
@@             &@@  .@@%           %@@.  @@&             @@
@@             @@   @@               @@   @@             @@
@@            %@@  @@*               /@@  @@%            @@
@@            @@%  @@                 @@  %@@            @@
@@            *@@  @@&               &@@  @@*            @@
@@             @@   @@*             *@@   @@             @@
@@              @@   @@@           @@@   @@              @@
@@%%%%%%%%%%%%%%%@@%   @@@@@&%&@@@@@   %@@%%%%%%%%%%%%%%%@@
@@@@@@@@@@@@@@@@@@@@@@     *&@&*     @@@@@@@@@@@@@@@@@@@@@@
@@                  ,@@@@&       &@@@@,                  @@
@@                      (@@@@@@@@@(                      @@
@@                                                       @@
@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
"
}

#Param 1: Question / Param 2: Default / silent answer
function ask_yes_no {
    if [ "$SILENT_INSTALL" = false ]; then
        read -p "${1}: " -n 1 -r
    else
        REPLY=${2}
    fi
}

function no_raspberry {
    warn "WARNING: This script is intended to run on a Raspberry Pi."
    warn "Running the script on other devices running Debian / a Debian based distribution is possible, but Raspberry Pi specific features will be missing!"
    RUNNING_ON_PI=false
    print_spaces
}

function view_help() {
    cat <<EOF
Usage: sudo bash install-photobooth.sh -u=<YourUsername> [-b=<stable4:dev:package> -hprsV -w=<apache:nginx:lighttpd]

    -h,  -help,       --help        Display help.

    -b,  -branch,     --branch      Enter the Photobooth branch (version) you like to install.
                                    Available branches: dev (default), stable4, stable3, package
                                    By default, latest development verison (dev) will be installed.
                                    package will install latest Release from zip.

    -p,  -php,        --php         Choos the PHP version to install (Default = 8.3)

    -r,  -raspberry,  --raspberry   Skip Pi detection and add Pi specific adjustments.
                                    Note: only to use on Raspberry Pi OS!

    -s,  -silent,     --silent      Run silent installation:
                                    - Uses Apache Webserver
                                    - installs Photobooth into /var/www/html
                                    - installs latest Photobooth development version via git
                                    - installs CUPS
                                    - deny remote access to CUPS over IP from all devices inside
                                      your network (automatic image building failes to enable
                                      because cups can't be configured while in chroot env)
                                    - installs a collection of free-software printer drivers (Gutenprint)
                                    - disables screen saver and hide the mouse cursor (Raspberry Pi only)
                                    - adds config for USB sync file backup (Raspberry Pi only)

         -update,     --update      Try updating Photobooth via git.

    -u,  -username,   --username    Always required. Enter your OS username you like to use Photobooth on.

    -m,  -mjpeg,      --mjpeg       Install go2rtc to provide remote preview (via URL) of your camera.

    -M,  -mjpeg-only, --mjpeg-only  Only install go2rtc to provide remote preview (via URL) of your camera, then exit

    -V,  -verbose,    --verbose     Run script in verbose mode.

    -w,  -webserver,  --webserver   Enter the webserver to use [apache, nginx, lighttpd].
                                    Apache is used by default.

Example to install Photobooth on a Raspberry Pi getting asked for enabled options:
sudo bash install-photobooth.sh -u="photobooth"

Options can be combined. Example for a silent installation on a Raspberry Pi:
sudo bash install-photobooth.sh -u="photobooth" -s
EOF
}

print_logo
print_spaces
info "### The Photobooth installer for your Raspberry Pi."
print_spaces
info "################## Passed options #########################"
echo ""
options=$(getopt -l "help,branch::,php::,update,username::,raspberry,mjpeg,mjpeg-only,silent,verbose,webserver::" -o "hb::p::u::rsmMVw::" -a -- "$@")
eval set -- "$options"

while true; do
    case $1 in
    -h | --help)
        view_help
        exit 0
        ;;
    -b | --branch)
        shift
        if [ "$1" == "dev" ] || [ "$1" == "stable4" ]; then
            BRANCH=$1
            GIT_INSTALL=true
        elif [ "$1" == "package" ]; then
            BRANCH="stable4"
            GIT_INSTALL=false
            NEEDS_NODEJS_CHECK=false
            NEEDS_NPM_CHECK=false
        else
            BRANCH="dev"
            GIT_INSTALL=true
            warn "[WARN]      Invalid branch / version!"
            warn "[WARN]      Falling back to defaults. Installing latest development branch from git."
        fi
        info "### Photobooth version / branch:  $1"
        ;;
    -p | --php)
        shift
        PHP_VERSION=$1
        info "### PHP Version: $1"
        ;;
    --update)
        RUN_UPDATE=true
        GIT_INSTALL=false
        info "### Trying to update Photobooth..."
        ;;
    -u | --username)
        shift
        USERNAME=$1
        info "### Username: $1"
        ;;
    -m | --mjpeg)
        MJPEG_PREVIEW=true
        GPHOTO_PREVIEW=false
        info "### Mjpeg mode enabled"
        ;;
    -M | --mjpeg-only)
        MJPEG_PREVIEW_ONLY=true
        info "### Only install mjpeg"
        ;;
    -s | --silent)
        SILENT_INSTALL=true
        info "### Silent installtion starting..."
        ;;
    -r | --raspberry)
        FORCE_RASPBERRY_PI=true
        info "### Skipping Pi detection and add specific adjustments..."
        ;;
    -V | --verbose)
        set -xv
        info "### Set xtrace and verbose mode."
        ;;
    -w | --webserver)
        shift
        WEBSERVER=$1
        info "### Webserver: $1"
        ;;
    --)
        shift
        break
        ;;
    esac
    shift
done
print_spaces

if [ "$(dpkg-query -W -f='${Status}' "lxde" 2>/dev/null | grep -c "ok installed")" -eq 1 ]; then
    DESKTOP_OS=true
else
    DESKTOP_OS=false
fi

function check_username() {
    info "[Info]      Checking if user $USERNAME exists..."
    if id "$USERNAME" &>/dev/null; then
        info "[Info]      User $USERNAME found. Installation process continues."
    else
        error "ERROR: An valid OS username is needed! Please re-run the installer."
        view_help
        exit
    fi
}

function check_nodejs() {
    NODE_VERSION=$(node -v || echo "0")
    IFS=. read -r -a VER <<<"${NODE_VERSION##*v}"
    major=${VER[0]}
    minor=${VER[1]}

    info "[Info]      Node.js on Photobooth is only supported on v$NODEJS_MAJOR.$NODEJS_MINOR!"
    info "[Info]      Found Node.js $NODE_VERSION".

    if [[ -n "$major" ]] && [[ "$major" -ge "$NODEJS_MAJOR" ]]; then
        if [[ -n "$major" ]] && [[ "$major" -ge "19" ]]; then
            info "[Info]      Node.js downgrade suggested."
            if [ "$NODEJS_CHECKED" = true ]; then
                warn "[WARN]      Downgrade of Node.js was not possible or skipped."
            else
                update_nodejs
            fi
        else
            if [[ "$major" -eq "$NODEJS_MAJOR" ]] && [[ "$minor" -lt "$NODEJS_MINOR" ]]; then
                if [ "$NODEJS_CHECKED" = true ]; then
                    error "[ERROR]     Update of Node.js was not possible. Aborting Photobooth installation!"
                    exit 1
                else
                    warn "[WARN]      Node.js needs to be updated."
                    update_nodejs
                fi
            else
                info "[Info]      Node.js matches our requirements.".
            fi
        fi
    elif [[ -n "$major" ]]; then
        if [ "$NODEJS_CHECKED" = true ]; then
            error "[ERROR]     Update of Node.js was not possible. Aborting Photobooth installation!"
            exit 1
        else
            update_nodejs
        fi
    else
        error "[ERROR]     Unable to handle Node.js version string (major)"
        exit 1
    fi
}

function update_nodejs() {
    echo -e "\033[0;33m### Node.js should be updated/downgraded. Node.js version not matching our requirements"
    echo -e "###  Found Node.js $NODE_VERSION, but $NEEDED_NODE_VERSION is suggested."
    echo -e "###  NOTE: Currently Node.js on Photobooth is only supported on v$NODEJS_MAJOR.$NODEJS_MINOR."
    echo -e "###        The installation of Photobooth will fail on Node.js versions below v$NODEJS_MAJOR.$NODEJS_MINOR."
    ask_yes_no "### Would you like to update/downgrade Node.js to $NEEDED_NODE_VERSION ? [y/N] " "Y"
    echo -e "\033[0m"
    if [[ $REPLY =~ ^[Yy]$ ]]; then
        if [ "$(dpkg-query -W -f='${Status}' "nodejs" 2>/dev/null | grep -c "ok installed")" -eq 1 ]; then
            info "[Cleanup]   Removing nodejs package"
            apt-get -qq purge -y nodejs
            apt-get -qq autoremove --purge -y
        fi

        if [ "$(dpkg-query -W -f='${Status}' "nodejs-doc" 2>/dev/null | grep -c "ok installed")" -eq 1 ]; then
            info "[Cleanup]   Removing nodejs-doc package"
            apt-get -qq purge -y nodejs-doc
        fi

        if [ "$(dpkg-query -W -f='${Status}' "libnode72" 2>/dev/null | grep -c "ok installed")" -eq 1 ]; then
            info "[Cleanup]   Removing libnode72 package"
            apt-get -qq purge -y libnode72
        fi

        if [ "$(dpkg-query -W -f='${Status}' "npm" 2>/dev/null | grep -c "ok installed")" -eq 1 ]; then
            info "[Cleanup]   Removing npm package"
            apt-get -qq purge -y npm
        fi

        info "[Package]   Installing latest Node.js v18"
        apt-get -qq install -y ca-certificates curl gnupg
        mkdir -p /etc/apt/keyrings
        curl -fsSL https://deb.nodesource.com/gpgkey/nodesource-repo.gpg.key | gpg --dearmor -o /etc/apt/keyrings/nodesource.gpg
        echo "deb [signed-by=/etc/apt/keyrings/nodesource.gpg] https://deb.nodesource.com/node_18.x nodistro main" | tee /etc/apt/sources.list.d/nodesource.list
        apt-get -qq update
        apt-get -qq install -y nodejs
        NODEJS_CHECKED=true
        check_nodejs
    else
        info "### We won't update Node.js."
        NODEJS_CHECKED=true
        check_nodejs
    fi
}

function proof_npm() {
    npm_version=$(npm -v)
    npm_major=$(echo "$npm_version" | cut -d. -f1)
    npm_minor=$(echo "$npm_version" | cut -d. -f2)
    info "[Info]      Found npm $npm_version"
    if [[ "$npm_major" -gt 9 ]] || [[ "$npm_major" -eq 9 ]] && [[ "$npm_minor" -ge 6 ]]; then
        info "[Info]      npm version matches our requirements."
    else
        warn "[WARN]      npm needs to be updated!"
        apt-get -qq --only-upgrade install npm
        npm install npm@9.6.7 -g
        hash -r
        npm_version_updated=$(npm -v)
        npm_major_updated=$(echo "$npm_version_updated" | cut -d. -f1)
        npm_minor_updated=$(echo "$npm_version_updated" | cut -d. -f2)
        info "[Info]      Found Node.js $npm_version_updated".
        if [[ "$npm_major_updated" -gt 9 ]] || [[ "$npm_major_updated" -eq 9 ]] && [[ "$npm_minor_updated" -ge 6 ]]; then
            info "[Info]      npm version matches our requirements."
        else
            error "[ERROR]     Update of npm was not possible. Aborting Photobooth installation!"
            exit 1
        fi
    fi
}

function check_npm() {
    if command -v npm &>/dev/null; then
        info "[Info]      npm available.".
    else
        info "[Info]      npm not installed. Trying to install...".
        apt-get -qq update
        apt-get -qq install -y npm
    fi
    proof_npm
}

function common_software() {
    info "### Updating the system"
    apt-get -qq update
    apt-get -qq install apt-transport-https lsb-release ca-certificates software-properties-common -y
    OS=$(lsb_release -sc)
    if [[ "${DEBIAN[*]}" =~ $OS ]]; then
        wget -qO /etc/apt/trusted.gpg.d/php.gpg https://packages.sury.org/php/apt.gpg
        echo "deb https://packages.sury.org/php/ $(lsb_release -sc) main" | tee /etc/apt/sources.list.d/php.list
    elif [[ "$OS" == "mantic" ]]; then
        info "### No source lists available."
    else
        if [[ "$OS" == "jammy" ]]; then
            echo "deb http://archive.ubuntu.com/ubuntu/ jammy-updates main restricted" >>/etc/apt/sources.lst
        fi
        add-apt-repository ppa:ondrej/php -y
    fi
    apt-get -qq update

    if [ "$RUN_UPDATE" = false ]; then
        info "### Photobooth needs some software to run."
        if [ "$WEBSERVER" == "nginx" ]; then
            nginx_webserver
        elif [ "$WEBSERVER" == "lighttpd" ]; then
            lighttpd_webserver
        else
            apache_webserver
        fi
    fi

    if [ "$GIT_INSTALL" = true ]; then
        EXTRA_PACKAGES+=(
            'git'
        )
    else
        EXTRA_PACKAGES+=(
            'jq'
        )
    fi

    # Note: raspberrypi-kernel-header are needed before v4l2loopback-dkms
    if [ "$RUNNING_ON_PI" = true ]; then
        EXTRA_PACKAGES+=('raspberrypi-kernel-headers')
    fi

    if [ "$GPHOTO_PREVIEW" = true ]; then
        EXTRA_PACKAGES+=(
            'ffmpeg'
            'python3-gphoto2'
            'python3-psutil'
            'python3-zmq'
            'v4l2loopback-dkms'
            'v4l-utils'
        )
    fi

    # Additional packages
    INSTALL_PACKAGES+=("${EXTRA_PACKAGES[@]}")

    # All required packages independend of Raspberry Pi.
    INSTALL_PACKAGES+=("${COMMON_PACKAGES[@]}")

    info "### Installing common software:"
    for required in "${INSTALL_PACKAGES[@]}"; do
        info "[Required]  ${required}"
    done

    for package in "${INSTALL_PACKAGES[@]}"; do
        if [ "$(dpkg-query -W -f='${Status}' "$package" 2>/dev/null | grep -c "ok installed")" -eq 1 ]; then
            info "[Package]   ${package} installed already"
        else
            info "[Package]   Installing missing common package: ${package}"
            apt-get -qq install -y "$package"
        fi
    done

    if [ "$NEEDS_NODEJS_CHECK" = true ]; then
        check_nodejs
    fi
    if [ "$NEEDS_NPM_CHECK" = true ]; then
        check_npm
    fi
}

function apache_webserver() {
    info "### Installing Apache Webserver..."
    apt-get -qq install -y apache2 libapache2-mod-php"$PHP_VERSION"
    sudo systemctl enable --now apache2
}

function nginx_webserver() {
    nginx_site_conf="/etc/nginx/sites-enabled/default"
    nginx_conf="/etc/nginx/nginx.conf"

    info "### Installing NGINX Webserver..."
    apt-get -qq install -y nginx php"$PHP_VERSION" php"$PHP_VERSION"-fpm

    if [ -f "$nginx_site_conf" ]; then
        info "### Enable PHP in NGINX"
        cp "$nginx_conf" ~/nginx-default.bak
        sed -i 's/^\(\s*\)index index\.html\(.*\)/\1index index\.php index\.html\2/g' "$nginx_site_conf"
        sed -i '/location ~ \\.php$ {/s/^\(\s*\)#/\1/g' "$nginx_site_conf"
        sed -i '/include snippets\/fastcgi-php.conf/s/^\(\s*\)#/\1/g' "$nginx_site_conf"
        sed -i '/fastcgi_pass unix:\/run\/php\//s/^\(\s*\)#/\1/g' "$nginx_site_conf"
        sed -i '/.*fastcgi_pass unix:\/run\/php\//,// { /}/s/^\(\s*\)#/\1/g; }' "$nginx_site_conf"
        sed -i "/fastcgi_pass unix:/s/php\([[:digit:]].*\)-fpm/php${PHP_VERSION}-fpm/g" "$nginx_site_conf"
        sed -i '/^include \/etc\/nginx\/sites-enabled\/\*;/a client_max_body_size 100M;' "$nginx_conf"

        info "### Testing NGINX config"
        /usr/sbin/nginx -t -c "$nginx_conf"

        info "### Restarting NGINX"
        systemctl reload-or-restart nginx
        systemctl enable nginx
        systemctl reload-or-restart php"$PHP_VERSION"-fpm
        systemctl enable php"$PHP_VERSION"-fpm
    else
        error "Can not find ${nginx_conf} !"
        info "Using Apache Webserver !"
        apt-get -qq remove -y nginx php"$PHP_VERSION"-fpm
        apache_webserver
    fi
}

function lighttpd_webserver() {
    info "### Installing Lighttpd Webserver..."
    apt-get -qq install -y lighttpd php"$PHP_VERSION"-fpm
    lighttpd-enable-mod fastcgi
    lighttpd-enable-mod fastcgi-php

    lighttpd_php_conf="/etc/lighttpd/conf-available/15-fastcgi-php.conf"

    if [ -f "$lighttpd_php_conf" ]; then
        info "### Enable PHP for Lighttpd"
        cp "$lighttpd_php_conf" "$lighttpd_php_conf".bak

        cat >"$lighttpd_php_conf" <<EOF
# -*- depends: fastcgi -*-
# /usr/share/doc/lighttpd/fastcgi.txt.gz
# http://redmine.lighttpd.net/projects/lighttpd/wiki/Docs:ConfigurationOptions#mod_fastcgi-fastcgi

## Start an FastCGI server for php (needs the php5-cgi package)
fastcgi.server += ( ".php" =>
	((
		"socket" => "/var/run/php/php${PHP_VERSION}-fpm.sock",
		"broken-scriptfilename" => "enable"
	))
)
EOF

        systemctl reload-or-restart lighttpd
        systemctl enable lighttpd
        systemctl reload-or-restart php"$PHP_VERSION"-fpm.service
        systemctl enable php"$PHP_VERSION"-fpm.service
    else
        error "Can not find ${lighttpd_php_conf} !"
        info "Using Apache Webserver !"
        apt-get -qq remove -y lighttpd php"$PHP_VERSION"-fpm
        apache_webserver
    fi
}

function general_setup() {
    if [ "$SUBFOLDER" = true ]; then
        cd /var/www/html/
        INSTALLFOLDER="photobooth"
        INSTALLFOLDERPATH="/var/www/html/$INSTALLFOLDER"
        URL="http://$IPADDRESS/$INSTALLFOLDER"
    else
        cd /var/www/
        INSTALLFOLDER="html"
        INSTALLFOLDERPATH="/var/www/html"
        URL="http://$IPADDRESS"
    fi

    if [ -d "$INSTALLFOLDERPATH" ]; then
        BACKUPFOLDER="html-$DATE"
        info "${INSTALLFOLDERPATH} found. Creating backup as ${BACKUPFOLDER}."
        mv "$INSTALLFOLDER" "$BACKUPFOLDER"
    else
        info "$INSTALLFOLDERPATH not found."
    fi

    mkdir -p "$INSTALLFOLDERPATH"
    chown www-data:www-data "$INSTALLFOLDERPATH"
    chown www-data:www-data /var/www

    PHOTOBOOTH_LOG="$INSTALLFOLDERPATH/private/install.log"
}

function add_git_remote() {
    cd "$INSTALLFOLDERPATH"/
    info "### Checking needed remote information..."
    if sudo -u www-data git config remote.photoboothproject.url >/dev/null; then
        info "### photoboothproject remote exist already"
        if sudo -u www-data git config remote.origin.url == "git@github.com:andi34/photobooth" || sudo -u www-data git config remote.origin.url == "https://github.com/andi34/photobooth.git"; then
            info "origin remote is andi34"
        fi
    else
        info "### Adding photoboothproject remote..."
        sudo -u www-data git remote add photoboothproject https://github.com/PhotoboothProject/photobooth.git
    fi
}

function check_git_install() {
    cd "$INSTALLFOLDERPATH"
    info "### Checking for git Installation"
    if [ "$(sudo -u www-data git rev-parse --is-inside-work-tree)" = true ]; then
        info "### Photobooth installed via git."
        GIT_INSTALL=true
        add_git_remote
    else
        warn "WARN: Not a git Installation."
    fi
}

function start_git_install() {
    cd "$INSTALLFOLDERPATH"
    info "### We are installing/updating Photobooth via git."
    info "### Ignoring filemode changes on git."
    sudo -u www-data git config core.fileMode false
    sudo -u www-data git fetch photoboothproject "$BRANCH"
    sudo -u www-data git checkout photoboothproject/"$BRANCH"

    sudo -u www-data git submodule update --init

    if [ -f "0001-backup-changes.patch" ]; then
        info "### Trying to apply your local changes again..."
        sudo -u www-data git am --whitespace=nowarn "0001-backup-changes.patch" && PATCH_SUCCESS=true || PATCH_SUCCESS=false
        if [ "$PATCH_SUCCESS" = true ]; then
            info "### Changes applied successfully!"
            sudo -u www-data git reset --soft HEAD^
        else
            error "ERROR: can not apply your local changes automatically!"
            sudo -u www-data git am --abort
        fi

        sudo -u www-data mv 0001-backup-changes.patch "$INSTALLFOLDERPATH/private/$DATE"-backup-changes.patch
    fi

    info "### Get yourself a hot beverage. The following step can take up to 15 minutes."
    mkdir -p /var/www/.npm
    chown www-data:www-data /var/www/.npm
    mkdir -p /var/www/.cache
    chown www-data:www-data /var/www/.cache
    sudo -u www-data npm install
    sudo -u www-data npm run build
}

function start_install() {
    info "### Now we are going to install Photobooth."
    if [ "$GIT_INSTALL" = true ]; then
        sudo -u www-data git clone https://github.com/PhotoboothProject/photobooth "$INSTALLFOLDER"
        cd "$INSTALLFOLDERPATH"
        add_git_remote
        start_git_install
    else
        info "### We are downloading the latest release and extracting it to $INSTALLFOLDERPATH."
        sudo -u www-data curl -s https://api.github.com/repos/PhotoboothProject/photobooth/releases/latest |
            jq '.assets[].browser_download_url | select(endswith(".tar.gz"))' |
            xargs curl -L --output /tmp/photobooth-latest.tar.gz

        sudo -u www-data mkdir -p "$INSTALLFOLDERPATH"
        sudo -u www-data tar -xzvf /tmp/photobooth-latest.tar.gz -C "$INSTALLFOLDERPATH"
        cd "$INSTALLFOLDERPATH"
    fi
}

function detect_browser() {
    if [ "$(dpkg-query -W -f='${Status}' "firefox" 2>/dev/null | grep -c "ok installed")" -eq 1 ]; then
        WEBBROWSER="firefox"
        CHROME_FLAGS=false
    elif [ "$(dpkg-query -W -f='${Status}' "firefox-esr" 2>/dev/null | grep -c "ok installed")" -eq 1 ]; then
        WEBBROWSER="firefox-esr"
        CHROME_FLAGS=false
    elif [ "$(dpkg-query -W -f='${Status}' "chromium-browser" 2>/dev/null | grep -c "ok installed")" -eq 1 ]; then
        WEBBROWSER="chromium-browser"
        CHROME_FLAGS=true
    elif [ "$(dpkg-query -W -f='${Status}' "chromium" 2>/dev/null | grep -c "ok installed")" -eq 1 ]; then
        WEBBROWSER="chromium"
        CHROME_FLAGS=true
    elif [ "$(dpkg-query -W -f='${Status}' "google-chrome" 2>/dev/null | grep -c "ok installed")" -eq 1 ]; then
        WEBBROWSER="google-chrome"
        CHROME_FLAGS=true
    elif [ "$(dpkg-query -W -f='${Status}' "google-chrome-stable" 2>/dev/null | grep -c "ok installed")" -eq 1 ]; then
        WEBBROWSER="google-chrome-stable"
        CHROME_FLAGS=true
    elif [ "$(dpkg-query -W -f='${Status}' "google-chrome-beta" 2>/dev/null | grep -c "ok installed")" -eq 1 ]; then
        WEBBROWSER="google-chrome-beta"
        CHROME_FLAGS=true
    else
        WEBBROWSER="unknown"
        CHROME_FLAGS=false
    fi
}

function browser_shortcut() {
    if [ "$CHROME_FLAGS" = true ]; then
        if [ "$RUNNING_ON_PI" = true ]; then
            if [ "$WAYLAND_ENV" = true ]; then
                EXTRA_FLAGS="$CHROME_DEFAULT_FLAGS --ozone-platform=wayland --start-maximized"
            else
                EXTRA_FLAGS="$CHROME_DEFAULT_FLAGS --use-gl=egl"
            fi
        else
            EXTRA_FLAGS="$CHROME_DEFAULT_FLAGS"
        fi
    else
        EXTRA_FLAGS=""
    fi

    echo "[Desktop Entry]" >"$AUTOSTART_FILE"

    {
        echo "Version=1.3"
        echo "Terminal=false"
        echo "Type=Application"
        echo "Name=Photobooth"
    } >>"$AUTOSTART_FILE"

    if [ "$SUBFOLDER" = true ]; then
        echo "Exec=$WEBBROWSER $KIOSK_FLAG/$INSTALLFOLDER $EXTRA_FLAGS" >>"$AUTOSTART_FILE"
    else
        echo "Exec=$WEBBROWSER $KIOSK_FLAG $EXTRA_FLAGS" >>"$AUTOSTART_FILE"
    fi

    {
        echo "Icon=$INSTALLFOLDERPATH/resources/img/favicon-96x96.png"
        echo "StartupNotify=false"
        echo "Terminal=false"
    } >>"$AUTOSTART_FILE"
}

function browser_desktop_shortcut() {
    if [ -d "/home/$USERNAME/Desktop" ] && [ "$USERNAME" != "" ]; then
        info "### Adding photobooth shortcut to Desktop"
        AUTOSTART_FILE="/home/$USERNAME/Desktop/photobooth.desktop"
        browser_shortcut
        chmod +x /home/"$USERNAME"/Desktop/photobooth.desktop
        chown "$USERNAME:$USERNAME" /home/"$USERNAME"/Desktop/photobooth.desktop
    fi
}

function browser_autostart() {
    AUTOSTART_FILE="/etc/xdg/autostart/photobooth.desktop"
    browser_shortcut
}

function ask_kiosk_mode() {
    echo -e "\033[0;33m### You probably like to start $WEBBROWSER on every start."
    ask_yes_no "### Open $WEBBROWSER in Kiosk Mode at every boot? [y/N] " "Y"
    echo -e "\033[0m"
    if [[ $REPLY =~ ^[Yy]$ ]]; then
        KIOSK_MODE=true
        info "### We will open $WEBBROWSER in Kiosk Mode at every boot."
    else
        KIOSK_MODE=false
        info "### We won't open $WEBBROWSER in Kiosk Mode at every boot."
    fi
}

function ask_hide_mouse() {
    echo -e "\033[0;33m### You probably like hide the mouse cursor on every start."
    ask_yes_no "### Hide the mouse cursor? [y/N] " "Y"
    echo -e "\033[0m"
    if [[ $REPLY =~ ^[Yy]$ ]]; then
        HIDE_MOUSE=true
        if [ "$WAYLAND_ENV" = false ]; then
            EXTRA_PACKAGES+=('unclutter')
        fi
        info "### We will hide the mouse cursor on every start."
    else
        HIDE_MOUSE=false
        info "### We won't hide the mouse cursor on every start."
    fi
}

function ask_usb_sync() {
    echo -e "\033[0;33m### Sync to USB - this feature will automatically copy (sync) new pictures to a USB stick."
    echo -e "### The actual configuration will be done in the admin panel but we need to setup your OS first."
    ask_yes_no "### Would you like to setup your OS to use the USB sync file backup? [y/N] " "Y"
    echo -e "\033[0m"
    if [[ $REPLY =~ ^[Yy]$ ]]; then
        USB_SYNC=true
        info "### We will setup your OS to be able to use the USB sync file backup."
        info "### Note: automount can only be avoided on Pi OS."
    else
        USB_SYNC=false
        info "### We won't setup your OS to use the USB sync file backup."
    fi
}

function raspberry_permission() {
    info "### Remote Buzzer Feature"
    info "### Configure Raspberry PI GPIOs for Photobooth - please reboot in order use the Remote Buzzer Feature"
    if [ -f '/boot/firmware/config.txt' ]; then
        BOOT_CONFIG="/boot/firmware/config.txt"
    else
        BOOT_CONFIG="/boot/config.txt"
    fi
    usermod -a -G gpio www-data
    # remove old artifacts from node-rpio library, if there was
    if [ -f '/etc/udev/rules.d/20-photobooth-gpiomem.rules' ]; then
        info "### Remotebuzzer switched from node-rpio to onoff library. We detected an old remotebuzzer installation and will remove artifacts"
        rm -f /etc/udev/rules.d/20-photobooth-gpiomem.rules
        sed -i '/dtoverlay=gpio-no-irq/d' "$BOOT_CONFIG"
    fi
    # add configuration required for onoff library
    sed -i '/Photobooth/,/Photobooth End/d' "$BOOT_CONFIG"
    if [ "$RASPBERRY_PI_5" = true ]; then
        cat >>"$BOOT_CONFIG" <<EOF
# Photobooth
#IN
gpio=404,405,406,407,415,416,419,420,421,425,426=pu
#OUT
gpio=408,409,410,411,417,418,422,423,424=op
# Photobooth End
EOF

    else
        cat >>"$BOOT_CONFIG" <<EOF
# Photobooth
#IN
gpio=5,6,7,8,16,17,20,21,22,26,27=pu
#OUT
gpio=9,10,11,12,18,19,23,24,25=op
# Photobooth End
EOF

    fi

    # update artifacts in user configuration from old remotebuzzer implementation
    if [ -f "$INSTALLFOLDERPATH/config/my.config.inc.php" ]; then
        sed -i '/remotebuzzer/{n;n;s/enabled/usebuttons/}' "$INSTALLFOLDERPATH"/config/my.config.inc.php
    fi

    if [ "$RUN_UPDATE" = false ]; then
        if [ "$USB_SYNC" = true ] && [ "$DESKTOP_OS" = true ]; then
            info "### Disabling automount for user $USERNAME."
            mkdir -p /home/"$USERNAME"/.config/pcmanfm/LXDE-pi/
            cat >>/home/"$USERNAME"/.config/pcmanfm/LXDE-pi/pcmanfm.conf <<EOF
[volume]
mount_on_startup=0
mount_removable=0
autorun=0
EOF

            chown -R "$USERNAME:$USERNAME" /home/"$USERNAME"/.config
        else
            info "### lxde is not installed. Can not add automount config for user $USERNAME."
        fi
    fi
}

function general_permissions() {
    info "### Setting permissions."
    chown -R www-data:www-data "$INSTALLFOLDERPATH"/
    chmod g+s "$INSTALLFOLDERPATH/private"
    gpasswd -a www-data plugdev
    gpasswd -a www-data video
    gpasswd -a "$USERNAME" www-data

    info "### Fixing permissions on cache folder."
    mkdir -p "/var/www/.cache"
    chown -R www-data:www-data "/var/www/.cache"

    info "### Fixing permissions on npm folder."
    mkdir -p "/var/www/.npm"
    chown -R www-data:www-data "/var/www/.npm"

    info "### Disabling camera automount."
    chmod -x /usr/lib/gvfs/gvfs-gphoto2-volume-monitor || true

    # Add configuration required for www-data to be able to initiate system shutdown / reboot
    info "### Note: In order for the shutdown and reboot button to work we install /etc/sudoers.d/020_www-data-shutdown"
    cat >/etc/sudoers.d/020_www-data-shutdown <<EOF
# Photobooth buttons for www-data to shutdown or reboot the system from admin panel or via remotebuzzer
www-data ALL=(ALL) NOPASSWD: /sbin/shutdown
EOF

    if [ "$USB_SYNC" = true ]; then
        info "### Adding polkit rule so www-data can (un)mount drives"

        cat >/etc/polkit-1/localauthority/50-local.d/photobooth.pkla <<EOF
[Allow www-data to mount drives with udisks2]
Identity=unix-user:www-data
Action=org.freedesktop.udisks2.filesystem-mount*;org.freedesktop.udisks2.filesystem-unmount*
ResultAny=yes
ResultInactive=yes
ResultActive=yes
EOF
    fi
}

function hide_mouse() {
    if [ "$WAYLAND_ENV" = true ]; then
        if [ -f "/usr/share/icons/PiXflat/cursors/left_ptr" ]; then
            mv /usr/share/icons/PiXflat/cursors/left_ptr /usr/share/icons/PiXflat/cursors/left_ptr.bak
        fi
    else
        if [ -f "/etc/xdg/lxsession/LXDE-pi/autostart" ]; then
            sed -i '/Photobooth/,/Photobooth End/d' /etc/xdg/lxsession/LXDE-pi/autostart
        fi

        cat >>/etc/xdg/lxsession/LXDE-pi/autostart <<EOF
# Photobooth
# turn off display power management system
@xset -dpms
# turn off screen blanking
@xset s noblank
# turn off screen saver
@xset s off
# Hide mousecursor
@unclutter -idle 3
# Photobooth End
EOF

    fi
}

function cups_setup() {
    info "### Setting printer permissions."
    gpasswd -a www-data lp
    gpasswd -a www-data lpadmin
    if [ "$CUPS_REMOTE_ANY" = true ]; then
        info "### Access to CUPS will be allowed from all devices in your network."
        cupsctl --remote-any
        /etc/init.d/cups restart
    fi
}

gphoto_preview() {
    # make configs persistent
    [[ ! -d /etc/modules-load.d ]] && mkdir /etc/modules-load.d
    echo v4l2loopback >/etc/modules-load.d/v4l2loopback.conf

    [[ ! -d /etc/modprobe.d ]] && mkdir /etc/modprobe.d
    cat >/etc/modprobe.d/v4l2loopback.conf <<EOF
options v4l2loopback exclusive_caps=1 card_label="GPhoto2 Webcam"
blacklist bcm2835-isp
EOF
    # adjust current runtime
    modprobe v4l2loopback exclusive_caps=1 card_label="GPhoto2 Webcam"
    rmmod bcm2835-isp || true
    if [[ ! -f $INSTALLFOLDERPATH/config/my.config.inc.php ]]; then
        info "### Creating default Photobooth config."
        cat >$INSTALLFOLDERPATH/config/my.config.inc.php << EOF
<?php
\$config = array (
  'preview' =>
  array (
    'mode' => 'device_cam',
    'cmd' => 'python3 cameracontrol.py',
    'bsm' => false,
  ),
  'take_picture' =>
  array (
    'cmd' => 'python3 cameracontrol.py --capture-image-and-download %s',
  ),
);
EOF
        chown www-data:www-data $INSTALLFOLDERPATH/config/my.config.inc.php
    else
        info "### Can not set default config!"
        info "    Please adjust your Photobooth configuration:"
        info "    Preview mode: from device cam"
        info "    Command to generate a live preview: python3 cameracontrol.py"
        info "    Execute start command for preview on take picture/collage: disabled"
        info "    Take picture command: python3 cameracontrol.py --capture-image-and-download %s"
    fi
}

function mjpeg_preview() {
    local arch
    local goarch
    local os
    local file

    if ! command -v go2rtc &>/dev/null || [[ ! $(go2rtc -version) =~ $GO2RTC_VERSION ]]; then
        info "### Installing go2rtc (version: ${GO2RTC_VERSION})"

        if [[ "$OSTYPE" =~ linux ]]; then
            os=linux
        elif [[ "$OSTYPE" =~ darwin ]]; then
            os=darwin
        elif [[ "$OSTYPE" =~ cygwin|mysys|win32 ]]; then
            os=windows
        else
            error "### $OSTYPE not supported"
            exit 1
        fi

        arch=$(uname -m)
        if [[ "$arch" == "x86_64" ]]; then
            goarch="amd64"
        elif [[ "$arch" == "i386" ]]; then
            goarch="386"
        elif [[ "$arch" == "armv7l" ]]; then
            goarch="armv7"
        elif [[ "$arch" == "armv6l" ]]; then
            goarch="armv6"
        elif [[ "$arch" == "aarch64" ]]; then
            goarch="arm64"
        else
            error "### $arch not supported"
            exit 1
        fi

        if [[ ! -d /usr/local/bin ]]; then
            mkdir -p /usr/local/bin
        fi
        file="go2rtc_${os}_${goarch}.tar.gz"
        wget -P /tmp "https://github.com/dadav/go2rtc/releases/download/${GO2RTC_VERSION}/${file}"
        tar xf "/tmp/${file}" -C /usr/local/bin go2rtc
        rm /tmp/"$file"
        chmod +x /usr/local/bin/go2rtc
    fi

    if [[ ! -f /etc/go2rtc.yaml ]]; then
        info "### Creating /etc/go2rtc.yaml configuration file"
        cat >/etc/go2rtc.yaml <<EOF
---
streams:
  dslr: exec:gphoto2 --capture-movie --stdout#killsignal=sigint
EOF
    fi

    if [[ ! -f /etc/systemd/system/go2rtc.service ]]; then
        info "### Creating go2rtc systemd service"
        cat >/etc/systemd/system/go2rtc.service <<EOF
[Unit]
Description=go2rtc streaming software

[Service]
User=www-data
ExecStart=/usr/local/bin/go2rtc -config /etc/go2rtc.yaml
KillMode=process
KillSignal=SIGINT

[Install]
WantedBy=multi-user.target
EOF
        systemctl daemon-reload
        systemctl enable --now go2rtc.service
    fi

    if [[ ! -f /etc/sudoers.d/020_www-data-systemctl ]]; then
        info "### Creating /etc/sudoers.d/020_www-data-systemctl"
        cat >/etc/sudoers.d/020_www-data-systemctl <<EOF
# Control streaming software
www-data ALL=(ALL) NOPASSWD: /usr/bin/systemctl start go2rtc.service, /usr/bin/systemctl stop go2rtc.service
EOF
    fi

    if [[ ! -f /usr/local/bin/capture ]]; then
        info "### Creating /usr/local/bin/capture script"
        cat >/usr/local/bin/capture <<EOF
#!/bin/bash

if [[ \$1 =~ -h|--help ]]; then
  cat <<HELP
This script stops go2rtc, runs gphoto2 and starts go2rtc again.
You can use it in your photobooth as capture command.

Usage:

    capture <filename> [or all required gphoto2 arguments]

In photobooth, usually 'capture %s' is enough. But if you want to use a more complex command,
don't forget to add --filename=%s.

HELP
  exit 0
fi

if [[ \$# -eq 1 ]]; then
    args="--set-config output=Off --capture-image-and-download --filename=\$1"
elif [[ \$# -gt 1 ]]; then
    args="\$@"
fi

if systemctl cat go2rtc.service >/dev/null; then
    HAS_GO2RTC=1
fi

[[ -n "\$HAS_GO2RTC" ]] && sudo systemctl stop go2rtc.service
gphoto2 \$args
[[ -n "\$HAS_GO2RTC" ]] && sudo systemctl start go2rtc.service
EOF
        chmod +x /usr/local/bin/capture
    fi

    if [[ ! -f $INSTALLFOLDERPATH/config/my.config.inc.php ]]; then
        info "### Creating default Photobooth config."
        cat >$INSTALLFOLDERPATH/config/my.config.inc.php << EOF
<?php
\$config = array (
  'picture' =>
  array (
    'cntdwn_time' => '6',
  ),
  'collage' =>
  array (
    'cntdwn_time' => '6',
  ),
  'preview' =>
  array (
    'mode' => 'url',
    'url' => 'url("http://localhost:1984/api/stream.mjpeg?src=dslr")',
  ),
  'take_picture' =>
  array (
    'cmd' => 'capture %s',
  ),
);
EOF
        chown www-data:www-data $INSTALLFOLDERPATH/config/my.config.inc.php
    else
        info "### Can not set default config!"
        info "    Please adjust your Photobooth configuration:"
        info "    Preview mode: from URL"
        info "    Preview-URL: url(\"http://localhost:1984/api/stream.mjpeg?src=dslr\")"
        info "    Take picture command: capture %s"
        warn "    Note: Countdown for pictures and collage should be set to a minimum of 6 seconds!"
    fi
}

function fix_git_modules() {
    cd "$INSTALLFOLDERPATH"

    sudo -u www-data git config --global --add safe.directory "$INSTALLFOLDERPATH"

    for submodule in "${PHOTOBOOTH_SUBMODULES[@]}"; do
        if [ -d "${INSTALLFOLDERPATH}/${submodule}" ]; then
            if grep -q "$submodule" "./.gitmodules"; then
                info "### Adding global safe.directory: ${INSTALLFOLDERPATH}/${submodule}"
                sudo -u www-data git config --global --add safe.directory "$INSTALLFOLDERPATH/$submodule"
            else
                warn "### ${INSTALLFOLDERPATH}/${submodule} does not belong to our modules anymore."
                rm -rf "${INSTALLFOLDERPATH:?}/$submodule"
            fi
        fi
    done

    sudo -u www-data git submodule foreach --recursive git reset --hard
    sudo -u www-data git submodule deinit -f .
    sudo -u www-data git submodule update --init --recursive
}

function commit_git_changes() {
    cd "$INSTALLFOLDERPATH"
    CHANGES_DETECTED=false
    fix_git_modules

    if [ "$(sudo -u www-data git config user.name)" = "" ]; then
        warn "WARN: git user.name not set!"
        info "### Setting git user.name."
        sudo -u www-data git config user.name Photobooth
    fi

    if [ "$(sudo -u www-data git config user.email)" = "" ]; then
        warn "WARN: git user.email not set!"
        info "### Setting git user.email."
        sudo -u www-data git config user.email Photobooth@localhost
    fi

    echo "git user.name: $(sudo -u www-data git config user.name)"
    echo "git user.email: $(sudo -u www-data git config user.email)"

    if [ "$(sudo -u www-data git status --porcelain)" = "" ]; then
        info "### Nothing to commit."
    else
        echo -e "\033[0;33m### Uncommited changes detected. Continue update? [y/N]"
        echo -e "### NOTE: If typing y, your changes will be commited and will be kept"
        echo -e "          inside a local branch ($BACKUPBRANCH)."
        echo -e "          We will try to apply these changes after update. If applying fails,"
        ask_yes_no "          your changes can be applied manually after update." "N"
        echo -e "\033[0m"
        if [ "$REPLY" != "${REPLY#[Yy]}" ]; then
            info "### We will commit your changes and keep them inside a local backup branch."
            CHANGES_DETECTED=true
            sudo -u www-data git add --all
            sudo -u www-data git commit -a -m "backup changes"
            sudo -u www-data git format-patch -1
        else
            error "ERROR: Uncommited changes detected. Please commit your changes."
            if [ "$SILENT_INSTALL" = true ]; then
                info "### You can also rerun the installer without silent mode to update anyway."
                info "### We will try to apply your changes again after update."
            fi
            exit
        fi
    fi

    sudo -u www-data git checkout -b "$BACKUPBRANCH"
    info "### Backup done to branch: $BACKUPBRANCH"
}

detect_photobooth_install() {
    for path in "${PHOTOBOOTH_PATH[@]}"; do
        info "### Checking for install at ${path}"
        if [ "$PHOTOBOOTH_FOUND" = false ]; then
            if [ -d "$path" ]; then
                if [ -f "${path}/lib/configsetup.inc.php" ]; then
                    PHOTOBOOTH_FOUND=true
                    INSTALLFOLDERPATH="$path"
                    info "### Photobooth installation found in path ${path}."
                    PHOTOBOOTH_LOG="$INSTALLFOLDERPATH/private/install.log"
                fi
            fi
        fi
    done
}

############################################################
#                                                          #
# General checks before the installation process can start #
#                                                          #
############################################################

if [ "$UID" != 0 ]; then
    error "ERROR: Only root is allowed to execute the installer. Forgot sudo?"
    exit 1
fi

if [ "$MJPEG_PREVIEW_ONLY" = true ]; then
    detect_photobooth_install
    mjpeg_preview
    exit 0
fi

if [ "$USERNAME" != "" ]; then
    check_username
else
    error "ERROR: An valid OS username is needed! Please re-run the installer."
    view_help
    exit
fi
print_spaces

if [ "$FORCE_RASPBERRY_PI" = false ]; then
    if [ ! -f /proc/device-tree/model ]; then
        no_raspberry 2
    else
        PI_MODEL=$(tr -d '\0' </proc/device-tree/model)

        if [[ $PI_MODEL != Raspberry* ]]; then
            no_raspberry 3
        elif [[ $PI_MODEL == *"Raspberry Pi 5"* ]]; then
            RASPBERRY_PI_5=true
        fi
    fi
fi

info "### Checking internet connection..."
if [ "$(dpkg-query -W -f='${Status}' "wget" 2>/dev/null | grep -c "ok installed")" -eq 1 ]; then
    if wget -q --tries=10 --timeout=20 -O - http://google.com >/dev/null; then
        info "    connected!"
    else
        error "ERROR: No internet connection!"
        error "       Please connect to the internet and rerun the installer."
        exit 1
    fi
else
    warn "Can not check Internet connection, wget missing!"
fi

if [ "$RUNNING_ON_PI" = true ]; then
    if [ -f "/home/$USERNAME/.config/wayfire.ini" ]; then
        WAYLAND_ENV=true
    else
        WAYLAND_ENV=false
    fi
fi

############################################################
#                                                          #
# Try updating Photobooth                                  #
#                                                          #
############################################################

if [ "$RUN_UPDATE" = true ]; then
    detect_photobooth_install

    if [ "$PHOTOBOOTH_FOUND" = true ]; then
        chown www-data:www-data "$INSTALLFOLDERPATH"
        chown www-data:www-data /var/www
        check_git_install
    else
        error "ERROR: Photobooth installation not found!"
        exit
    fi

    if [ "$GIT_INSTALL" = true ]; then
        detect_browser
        if [ -d "/etc/xdg/autostart" ] && [ "$WEBBROWSER" != "unknown" ]; then
            ask_kiosk_mode
        else
            warn "### No supported webbrowser found!"
        fi
        print_spaces

        # Pi specific setup start
        if [ "$RUNNING_ON_PI" = true ] && [ "$DESKTOP_OS" = true ]; then
            ask_hide_mouse
        else
            info "### lxde is not installed. Can not hide the mouse cursor on every start."
        fi
        print_spaces
        # Pi specific setup end

        if [ -d "/etc/polkit-1/localauthority/50-local.d" ]; then
            ask_usb_sync
        else
            info "### /etc/polkit-1/localauthority/50-local.d not found!"
            info "### Can not setup your OS to use the USB sync file backup."
        fi
        print_spaces
        echo -e "\033[0;33m### While updating your system the v4l2loopback module might get broken (needed for preview from DSLR). "
        echo -e "### Instructions to fix it can be found at https://photoboothproject.github.io/Update-Photobooth"
        ask_yes_no "          Do you like to update your system and install/update needed software? [y/N] " "n"
        echo -e "\033[0m"
        if [ "$REPLY" != "${REPLY#[Yy]}" ]; then
            info "### We will update your system and install/update needed software."
            common_software
        else
            info "### We won't update your system and won't install/update needed software"
        fi

        print_spaces
        commit_git_changes
        start_git_install
        general_permissions
        if [ "$RUNNING_ON_PI" = true ]; then
            raspberry_permission
        fi
        fix_git_modules
        if [ "$WEBBROWSER" != "unknown" ]; then
            browser_desktop_shortcut
            if [ "$KIOSK_MODE" = true ]; then
                browser_autostart
            fi
        else
            info "### Browser unknown or not installed. Can not add shortcut to Desktop."
        fi

        if [ "$HIDE_MOUSE" = true ]; then
            hide_mouse
        fi

        if [[ -f /etc/systemd/system/ffmpeg-webcam.service ]]; then
            # clean old files
            info "### Old ffmpeg-webcam.service detected. Uninstalling..."
            systemctl disable --now ffmpeg-webcam.service
            rm /etc/systemd/system/ffmpeg-webcam.service
            systemctl daemon-reload
            if [[ -f /usr/ffmpeg-webcam.sh ]]; then
                info "### Also removing the /usr/ffmpeg-webcam.sh file"
                rm /usr/ffmpeg-webcam.sh
            fi

            # install via new method
            info "### Installing new modprobe config"
            gphoto_preview
        fi

        if command -v go2rtc &>/dev/null; then
            info "### Installation of go2rtc detected. Checking for updates..."
            mjpeg_preview
        fi

        print_spaces
        print_logo
        info "###"
        if [ "$CHANGES_DETECTED" = true ]; then
            if [ "$PATCH_SUCCESS" = true ]; then
                info "### Your uncommited changes have been applied successfully!"
            else
                error "### Uncommited changes couldn't be applied automatically!"
            fi
        fi
        info "### Backup done to branch: $BACKUPBRANCH"
        info "###"
        info "### Update completed!"
        info "###"
        info "### Please clear your Browser Cache to"
        info "### avoid graphical issues."
        info "###"
        info "### Have fun with your Photobooth!"

        cat "$PHOTOBOOTH_TMP_LOG" >>"$PHOTOBOOTH_LOG" || warn "WARN: failed to add log to ${PHOTOBOOTH_LOG}"
    else
        error "ERROR: Can not Update!"
    fi
    exit
fi

############################################################
#                                                          #
# Ask all questions before installing Photobooth           #
#                                                          #
############################################################

echo -e "\033[0;33m### Is Photobooth the only website on this system?"
echo -e "### NOTE: If typing y, the whole /var/www/html folder will be renamed"
ask_yes_no "          to /var/www/html-$DATE if exists! [y/N] " "Y"
echo -e "\033[0m"
if [ "$REPLY" != "${REPLY#[Yy]}" ]; then
    info "### We will install Photobooth into /var/www/html."
    SUBFOLDER=false
else
    info "### We will install Photobooth into /var/www/html/$INSTALLFOLDER."
fi

print_spaces

echo -e "\033[0;33m### You probably like to use a printer."
ask_yes_no "### You like to install CUPS and set needing printer permissions? [y/N] " "Y"
echo -e "\033[0m"
if [[ $REPLY =~ ^[Yy]$ ]]; then
    SETUP_CUPS=true
    EXTRA_PACKAGES+=('cups')
    info "### We will install CUPS if not installed already."
    print_spaces

    echo -e "\033[0;33m### By default CUPS can only be accessed via localhost."
    ask_yes_no "### You like to allow remote access to CUPS over IP from all devices inside your network? [y/N] " "N"
    echo -e "\033[0m"
    if [[ $REPLY =~ ^[Yy]$ ]]; then
        CUPS_REMOTE_ANY=true
        info "### We will allow remote access to CUPS over IP from all devices inside your network."
    else
        info "### We won't allow remote access to CUPS over IP from all devices inside your network."
    fi

    print_spaces

    echo -e "\033[0;33m### You might need some additional drivers to use the print function."
    echo -e "### You like to install a collection of free-software printer drivers"
    ask_yes_no "### (Gutenprint for use with UNIX spooling systems, such as CUPS, lpr and LPRng)? [y/N] " "Y"
    echo -e "\033[0m"
    if [[ $REPLY =~ ^[Yy]$ ]]; then
        EXTRA_PACKAGES+=('printer-driver-gutenprint')
        info "### We will install Gutenprint drivers if not installed already."
    else
        info "### We won't install Gutenprint drivers if not installed already."
    fi
fi

print_spaces

detect_browser
if [ -d "/etc/xdg/autostart" ]; then
    if [ "$WEBBROWSER" != "unknown" ]; then
        ask_kiosk_mode
    else
        warn "### No supported webbrowser found!"
    fi
    print_spaces
fi

# Pi specific setup start
if [ "$RUNNING_ON_PI" = true ]; then
    if [ "$DESKTOP_OS" = true ]; then
        ask_hide_mouse
    else
        info "### lxde is not installed. Can not hide the mouse cursor on every start."
    fi
    print_spaces
fi
# Pi specific setup end

if [ -d "/etc/polkit-1/localauthority/50-local.d" ]; then
    ask_usb_sync
else
    info "### /etc/polkit-1/localauthority/50-local.d not found!"
    info "### Can not setup your OS to use the USB sync file backup."
fi
print_spaces

if grep -i Microsoft /proc/version &>/dev/null; then
    GPHOTO_PREVIEW=false

    echo -e "\033[0;33m### You seem to be installing photobooth inside of wsl."
    echo -e "Do you want to install a service to be able to stream your camera via http"
    echo -e "### (needed for preview from gphoto2)? Your camera must be supported by gphoto2 for liveview."
    ask_yes_no "### If unsure, type Y. [Y/n] " "Y"
    if [[ $REPLY =~ ^[Yy]$ ]]; then
        MJPEG_PREVIEW=true
        info "### We will install a service to set up a mjpeg stream for gphoto2."
    else
        MJPEG_PREVIEW=false
        info "### We won't install a service to set up a mjpeg stream for gphoto2."
    fi
elif [ "$MJPEG_PREVIEW" = true ]; then
    info "### Mjpeg mode enabled. Installing go2rtc and needed service to stream your camera via http."
else
    info "Do you want to install a service to be able to stream your camera to?"
    info "Your camera must be supported by gphoto2 for liveview."
    info ""
    echo "Your options are:"
    echo "1 Install gphoto2 webcam service"
    echo "2 Install go2rtc and needed service to stream your camera via http"
    echo "3 Don't install a service to set up preview for gphoto2"
    info ""
    ask_yes_no "Please enter your choice:" "3"
    info ""
    if [[ $REPLY =~ ^[1]$ ]]; then
        GPHOTO_PREVIEW=true
        MJPEG_PREVIEW=false
        info "### We will install a service to set up a virtual webcam for gphoto2."
        warn "### Note: This will disable other webcam interfaces on a Raspberry Pi (e.g. Pi Camera)."
    elif [[ $REPLY =~ ^[2]$ ]]; then
        GPHOTO_PREVIEW=false
        MJPEG_PREVIEW=true
        info "### We will install a service to set up a mjpeg stream for gphoto2."
    else
        GPHOTO_PREVIEW=false
        MJPEG_PREVIEW=false
        info "### We won't install a service to set up preview for gphoto2."
    fi
fi

############################################################
#                                                          #
# Go through the installation steps of Photobooth          #
#                                                          #
############################################################

print_spaces
info "### Starting installation..."
print_spaces

common_software
general_setup
start_install
general_permissions
if [ "$RUNNING_ON_PI" = true ]; then
    raspberry_permission
fi
if [ "$WEBBROWSER" != "unknown" ]; then
    browser_desktop_shortcut
    if [ "$KIOSK_MODE" = true ]; then
        browser_autostart
    fi
else
    info "### Browser unknown or not installed. Can not add shortcut to Desktop."
fi
if [ "$HIDE_MOUSE" = true ]; then
    hide_mouse
fi
if [ "$SETUP_CUPS" = true ]; then
    cups_setup
fi
if [ "$GPHOTO_PREVIEW" = true ]; then
    gphoto_preview
fi

if [ "$MJPEG_PREVIEW" = true ]; then
    mjpeg_preview
fi

print_logo
info ""
info "### Congratulations you finished the install process."
info "    Photobooth was installed inside:"
info "        $INSTALLFOLDERPATH"
info ""
info "    Used webserver: $WEBSERVER"
info ""
info "    Photobooth can be accessed at:"
info "        $URL"
info ""
if [ "$SETUP_CUPS" = true ]; then
    info "    In order to use the print function,"
    info "    you'll have to setup your printer inside CUPS:"
    info "        http://localhost:631"
    info ""
fi
info "###"
info "### Have fun with your Photobooth, but first restart your device!"

cat "$PHOTOBOOTH_TMP_LOG" >>"$PHOTOBOOTH_LOG" || warn "WARN: failed to add log to ${PHOTOBOOTH_LOG}"

echo -e "\033[0;33m"
ask_yes_no "### Do you like to reboot now? [y/N] " "N"
echo -e "\033[0m"
if [[ $REPLY =~ ^[Yy]$ ]]; then
    info "### Your device will reboot now."
    shutdown -r now
fi