#!/bin/sh

set -e

# install dependencies
/usr/bin/apt update
/usr/bin/apt install --no-install-recommends -y xserver-xorg x11-xserver-utils xinit firefox-esr matchbox-window-manager libnss3-tools

#Change a default preference set by stock debian firefox-esr
sed -i 's|^pref("extensions.update.enabled", true);$|pref("extensions.update.enabled", false);|' /etc/firefox-esr/firefox-esr.js

if ! id kiosk; then
    # create kiosk user
    useradd -s /bin/bash --create-home kiosk
fi

mkdir /home/kiosk/fx-profile
cat >> /home/kiosk/fx-profile/prefs.js << EOF
user_pref("app.normandy.api_url", "");
user_pref("app.normandy.enabled", false);
user_pref("app.shield.optoutstudies.enabled", false);
user_pref("app.update.enabled", false);
user_pref("browser.aboutHomeSnippets.updateUrl", "");
user_pref("browser.bookmarks.addedImportButton", false);
user_pref("browser.casting.enabled", false);
user_pref("browser.crashReports.unsubmittedCheck.autoSubmit2", false);
user_pref("browser.newtabpage.activity-stream.feeds.asrouterfeed", false);
user_pref("browser.newtabpage.activity-stream.feeds.topsites", false);
user_pref("browser.newtabpage.activity-stream.showSponsoredTopSites", false);
user_pref("browser.onboarding.enabled", false);
user_pref("browser.ping-centre.telemetry", false);
user_pref("browser.pocket.enabled",	false);
user_pref("browser.safebrowsing.blockedURIs.enabled", false);
user_pref("browser.safebrowsing.malware.enabled", false);
user_pref("browser.safebrowsing.phishing.enabled", false);
user_pref("browser.safebrowsing.downloads.remote.block_potentially_unwanted", false);
user_pref("browser.safebrowsing.downloads.remote.block_uncommon", false);
user_pref("browser.safebrowsing.downloads.remote.enabled", false);
user_pref("browser.search.geoip.url", "");
user_pref("browser.search.update", false);
user_pref("browser.search.suggest.enabled",	false);
user_pref("browser.startup.homepage_override.mstone", "ignore");
user_pref("browser.theme.content-theme", 0);
user_pref("browser.theme.toolbar-theme", 0);
user_pref("browser.urlbar.groupLabels.enabled", false);
user_pref("browser.urlbar.suggest.searches" false);
user_pref("datareporting.policy.firstRunURL", "");
user_pref("datareporting.healthreport.service.enabled", false);
user_pref("datareporting.healthreport.uploadEnabled", false);
user_pref("datareporting.policy.dataSubmissionEnabled", false);
user_pref("dom.securecontext.allowlist_onions", true);
user_pref("dom.securecontext.whitelist_onions", true);
user_pref("experiments.enabled", false);
user_pref("experiments.activeExperiment", false);
user_pref("experiments.supported", false);
user_pref("extensions.activeThemeID", "firefox-compact-dark@mozilla.org");
user_pref("extensions.blocklist.enabled", false);
user_pref("extensions.getAddons.cache.enabled", false);
user_pref("extensions.pocket.enabled", false);
user_pref("extensions.update.enabled", false);
user_pref("extensions.shield-recipe-client.enabled", false);
user_pref("extensions.shield-recipe-client.user_id", "");
user_pref("extensions.shield-recipe-client.api_url", "");
user_pref("media.gmp-gmpopenh264.enabled", false);
user_pref("messaging-system.rsexperimentloader.enabled", false);
user_pref("network.allow-experiments", false);
user_pref("network.captive-portal-service.enabled", false);
user_pref("network.connectivity-service.enabled", false);
user_pref("network.proxy.autoconfig_url", "file:///usr/lib/startos/proxy.pac");
user_pref("network.proxy.socks_remote_dns", true);
user_pref("network.proxy.type", 2);
user_pref("signon.rememberSignons", false);
user_pref("toolkit.telemetry.archive.enabled", false);
user_pref("toolkit.telemetry.bhrPing.enabled", false);
user_pref("toolkit.telemetry.coverage.opt-out", true);
user_pref("toolkit.telemetry.enabled", false);
user_pref("toolkit.telemetry.firstShutdownPing.enabled", false);
user_pref("toolkit.telemetry.newProfilePing.enabled", false);
user_pref("toolkit.telemetry.reportingpolicy.firstRun", false);
user_pref("toolkit.telemetry.shutdownPingSender.enabled", false);
user_pref("toolkit.telemetry.unified", false);
user_pref("toolkit.telemetry.updatePing.enabled", false);
user_pref("toolkit.telemetry.cachedClientID", "");
EOF

# create kiosk script
cat > /home/kiosk/kiosk.sh << 'EOF'
#!/bin/sh
while ! curl "http://localhost" > /dev/null; do
    sleep 1
done
while ! /usr/lib/startos/scripts/check-monitor; do
    sleep 15
done
(
    while /usr/lib/startos/scripts/check-monitor; do
        sleep 15
    done
    killall firefox-esr
) &
matchbox-window-manager -use_titlebar no &
firefox-esr http://localhost --profile /home/kiosk/fx-profile
EOF
chmod +x /home/kiosk/kiosk.sh

# use kiosk if tty (not pts)
if ! grep -q 'kiosk' /home/kiosk/.profile; then
cat >> /home/kiosk/.profile << 'EOF'
# Use kiosk for TTY
if [[ "$(tty)" =~ ^/dev/tty ]]; then
    exec startx "$HOME/kiosk.sh"
fi
EOF
fi

chown -R kiosk:kiosk /home/kiosk

# enable autologin
mkdir -p /etc/systemd/system/getty@tty1.service.d
cat > /etc/systemd/system/getty@tty1.service.d/autologin.conf << 'EOF'
[Service]
ExecStart=
ExecStart=-/sbin/agetty --autologin kiosk --noclear %I $TERM
EOF
ln -fs /etc/systemd/system/autologin@.service /etc/systemd/system/getty.target.wants/getty@tty1.service