Merge pull request #3 from karl0ss/display-power-control

Display power control

kiosk_skeleton/boot/kioskbrowser.ini

@@ -2,13 +2,21 @@
 [general]
 hostname = "kioskpi"
 
+[reboot]
+; can be used to set an automatic reboot on a specific time (time in 24 horus format)
+enabled=0
+reboot_time = 04:00
+
 [screen]
 ; can be used to force 1080p on 4k screens or workaround broken EDID communication
 ;force_resolution = "1920x1080"
 ; force a custom modelines (for specialty diplays like embedded monitors, car screens, etc.)
 ;custom_modeline = "40.141 1024 1032 1064 1104 600 604 612 618 +HSync -VSync"
-; can be used for forcing screen rotation on raspberry pi boards (normal, left, right, inverted)
+; set screen rotation to be used (normal, left, right, inverted)
 ;rotate_screen = "normal"
+; configure screen to power on/off as specific time of day (time format in 24 hours)
+;screen_off_time=23:00
+;screen_on_time=07:00
 
 [wifi]
 ; If you need more complex WiFi settings (like WPA2-Enterprise, hidden SSIDs, etc.)

kiosk_skeleton/build.sh

@@ -78,6 +78,9 @@ systemctl enable ntpdate
 systemctl enable lightdm
 systemctl enable nginx
 systemctl enable ssh
+systemctl enable kiosk-sechedule-screen.service
+systemctl enable schedule-reboot.service
+
 
 # generate a version info/build info file
 echo -n "Chromium version: " >> /version-info

kiosk_skeleton/etc/systemd/system/kiosk-sechedule-screen.service

@@ -0,0 +1,11 @@
+# /etc/systemd/system/kiosk-sechedule-screen.service
+[Unit]
+Description=Schedule Screen On/Off Timers
+After=multi-user.target
+
+[Service]
+Type=oneshot
+ExecStart=/usr/bin/schedule-screen-timers
+
+[Install]
+WantedBy=multi-user.target

kiosk_skeleton/etc/systemd/system/schedule-reboot.service

@@ -0,0 +1,10 @@
+[Unit]
+Description=Schedule Reboot from kioskbrowser.ini
+After=multi-user.target
+
+[Service]
+Type=oneshot
+ExecStart=/usr/bin/schedule-reboot
+
+[Install]
+WantedBy=multi-user.target

kiosk_skeleton/usr/bin/schedule-reboot

@@ -0,0 +1,51 @@
+#!/bin/bash
+
+INI_FILE="/boot/kioskbrowser.ini"
+REBOOT_ENABLED=$(awk -F '=' '/^\[reboot\]/ { in_reboot=1; next }
+                             in_reboot && /^\[/ { in_reboot=0 }
+                             in_reboot && $1 ~ /enabled/ { gsub(/ /, "", $2); print $2 }' "$INI_FILE")
+
+REBOOT_TIME=$(awk -F '=' '/^\[reboot\]/ { in_reboot=1; next }
+                           in_reboot && /^\[/ { in_reboot=0 }
+                           in_reboot && $1 ~ /reboot_time/ { gsub(/ /, "", $2); print $2 }' "$INI_FILE")
+
+if [[ "$REBOOT_ENABLED" -eq 1 ]] && [[ "$REBOOT_TIME" =~ ^[0-2][0-9]:[0-5][0-9]$ ]]; then
+    echo "Scheduling reboot for $REBOOT_TIME..."
+
+    TARGET_TIME=$(date -d "$REBOOT_TIME" +%s)
+    NOW=$(date +%s)
+
+    if [ "$TARGET_TIME" -le "$NOW" ]; then
+        TARGET_TIME=$(date -d "tomorrow $REBOOT_TIME" +%s)
+    fi
+
+    TARGET_ISO=$(date -d "@$TARGET_TIME" --iso-8601=seconds)
+
+    REBOOT_UNIT="/etc/systemd/system/reboot-at.timer"
+    cat <<EOF > "$REBOOT_UNIT"
+[Unit]
+Description=One-off reboot timer
+
+[Timer]
+OnCalendar=$TARGET_ISO
+Persistent=false
+
+[Install]
+WantedBy=timers.target
+EOF
+
+    # Create the associated service
+    cat <<EOF > /etc/systemd/system/reboot-at.service
+[Unit]
+Description=Scheduled Reboot
+
+[Service]
+Type=oneshot
+ExecStart=/sbin/reboot
+EOF
+
+    systemctl daemon-reload
+    systemctl enable --now reboot-at.timer
+else
+    echo "Reboot not scheduled (disabled or invalid time)"
+fi

kiosk_skeleton/usr/bin/schedule-screen-timers

@@ -0,0 +1,65 @@
+#!/bin/bash
+
+INI_FILE="/boot/kioskbrowser.ini"
+SYSTEMD_DIR="/etc/systemd/system"
+
+get_ini_value() {
+    local section=$1 key=$2
+    awk -F '=' -v sec="$section" -v k="$key" '
+    $0 ~ /^\[.*\]/ { in_section = ($0 == "[" sec "]") }
+    in_section && $1 ~ "^"k"$" {
+        gsub(/^[ \t]+|[ \t]+$/, "", $2)
+        print $2
+        exit
+    }' "$INI_FILE"
+}
+
+create_recurring_timer() {
+    local action=$1
+    local time=$2
+    local name="screen-${action}"
+
+    echo "Setting daily screen ${action} at ${time}"
+
+    cat <<EOF > "$SYSTEMD_DIR/${name}.timer"
+[Unit]
+Description=Daily screen ${action} timer
+
+[Timer]
+OnCalendar=*-*-* ${time}:00
+Persistent=true
+
+[Install]
+WantedBy=timers.target
+EOF
+
+    cat <<EOF > "$SYSTEMD_DIR/${name}.service"
+[Unit]
+Description=Turn screen ${action}
+
+[Service]
+Type=oneshot
+Environment=DISPLAY=:0
+ExecStart=/usr/bin/xset dpms force ${action}
+EOF
+
+    systemctl daemon-reload
+    systemctl enable --now "${name}.timer"
+}
+
+cleanup_screen_timers() {
+    for action in on off; do
+        systemctl disable --now screen-${action}.timer 2>/dev/null
+        rm -f "$SYSTEMD_DIR/screen-${action}.timer" "$SYSTEMD_DIR/screen-${action}.service"
+    done
+    systemctl daemon-reload
+}
+
+# === MAIN ===
+SCREEN_ON=$(get_ini_value screen screen_on_time)
+SCREEN_OFF=$(get_ini_value screen screen_off_time)
+
+cleanup_screen_timers
+
+[[ "$SCREEN_ON"  =~ ^[0-2][0-9]:[0-5][0-9]$ ]] && create_recurring_timer on "$SCREEN_ON"
+[[ "$SCREEN_OFF" =~ ^[0-2][0-9]:[0-5][0-9]$ ]] && create_recurring_timer off "$SCREEN_OFF"