Update theme engine

Signed-off-by: Nikolaos Karaolidis <nick@karaolidis.com>

hosts/common/configs/user/gui/theme/theme.sh

@@ -1,7 +1,10 @@
 # shellcheck shell=bash
 
 wallpaper=""
+color=""
 mode=""
+flavor=""
+contrast=""
 
 set_wallpaper() {
   if [[ -f "$1" ]]; then
@@ -12,6 +15,37 @@ set_wallpaper() {
   fi
 }
 
+set_color() {
+  local re='^#?([A-Fa-f0-9]{6})$'
+  if [[ "$1" =~ $re ]]; then
+    color="$1"
+  else
+    echo "Invalid color format: $1"
+    exit 1
+  fi
+}
+
+set_flavor() {
+  case "$1" in
+    content|expressive|fidelity|fruit-salad|monochrome|neutral|rainbow|tonal-spot)
+      flavor="$1"
+      ;;
+    *)
+      echo "Invalid flavor: $1"
+      exit 1
+      ;;
+  esac
+}
+
+set_contrast() {
+  if [[ "$1" =~ ^-?[0-1](\.[0-9]+)?$ ]]; then
+    contrast="$1"
+  else
+    echo "Invalid contrast value: $1"
+    exit 1
+  fi
+}
+
 toggle_mode() {
   if [[ "$(cat "$CONFIG"/mode)" = "light" ]]; then
     mode="dark"
@@ -21,37 +55,48 @@ toggle_mode() {
 }
 
 usage() {
-  echo "Usage: $0 [-m {light|dark|toggle}] [-w <file>]"
+  echo "Usage: $0 [-m {light|dark|toggle}] [-w <file>] [-h <hexcolor>] [-f <flavor>] [-c <contrast>]"
+  echo "       Only one of -w (wallpaper) or -h (hex color) can be used."
+  echo "       Valid flavors: content, expressive, fidelity, fruit-salad, monochrome, neutral, rainbow, tonal-spot"
+  echo "       Contrast must be a number between -1 and 1"
   exit 1
 }
 
 finish() {
-  [[ -n "$wallpaper" ]] && ln -sf "$wallpaper" "$CONFIG"/wallpaper
+  [[ -n "$wallpaper" ]] && rm -f "$CONFIG"/color && ln -sf "$wallpaper" "$CONFIG"/wallpaper
+  [[ -n "$color" ]] && rm -f "$CONFIG"/wallpaper && echo "$color" > "$CONFIG"/color
   [[ -n "$mode" ]] && echo "$mode" > "$CONFIG"/mode
+  [[ -n "$flavor" ]] && echo "$flavor" > "$CONFIG"/flavor
+  [[ -n "$contrast" ]] && echo "$contrast" > "$CONFIG"/contrast
 
   "$INIT" > /dev/null
   "$RELOAD" > /dev/null
 }
 
 # Parse arguments
-while getopts "m:w:" opt; do
+while getopts "m:w:h:f:c:" opt; do
   case "$opt" in
     m)
       case "$OPTARG" in
-        light|dark)
-          mode="$OPTARG"
-          ;;
-        toggle)
-          toggle_mode
-          ;;
-        *)
-          usage
-          ;;
+        light|dark) mode="$OPTARG" ;;
+        toggle) toggle_mode ;;
+        *) usage ;;
       esac
       ;;
     w)
+      [[ -n "$color" ]] && usage
       set_wallpaper "$OPTARG"
       ;;
+    h)
+      [[ -n "$wallpaper" ]] && usage
+      set_color "$OPTARG"
+      ;;
+    f)
+      set_flavor "$OPTARG"
+      ;;
+    c)
+      set_contrast "$OPTARG"
+      ;;
     *)
       usage
       ;;