add dms-greeter wrapper

Modules/Greetd/assets/dms-greeter

@@ -0,0 +1,174 @@
+#!/bin/bash
+
+set -e
+
+COMPOSITOR=""
+COMPOSITOR_CONFIG=""
+DMS_PATH="dms-greeter"
+CACHE_DIR="/var/cache/dmsgreeter"
+
+show_help() {
+    cat << EOF
+dms-greeter - DankMaterialShell greeter launcher
+
+Usage: dms-greeter --command COMPOSITOR [OPTIONS]
+
+Required:
+    --command COMPOSITOR    Compositor to use (niri, hyprland, or sway)
+
+Options:
+    -C, --config PATH       Custom compositor config file
+    -p, --path PATH         DMS path (config name or absolute path)
+                           (default: dms-greeter)
+    --cache-dir PATH        Cache directory for greeter data
+                           (default: /var/cache/dmsgreeter)
+    -h, --help             Show this help message
+
+Examples:
+    dms-greeter --command niri
+    dms-greeter --command hyprland -C /etc/greetd/custom-hypr.conf
+    dms-greeter --command sway -p /home/user/.config/quickshell/custom-dms
+    dms-greeter --command niri --cache-dir /tmp/dmsgreeter
+EOF
+}
+
+while [[ $# -gt 0 ]]; do
+    case $1 in
+        --command)
+            COMPOSITOR="$2"
+            shift 2
+            ;;
+        -C|--config)
+            COMPOSITOR_CONFIG="$2"
+            shift 2
+            ;;
+        -p|--path)
+            DMS_PATH="$2"
+            shift 2
+            ;;
+        --cache-dir)
+            CACHE_DIR="$2"
+            shift 2
+            ;;
+        -h|--help)
+            show_help
+            exit 0
+            ;;
+        *)
+            echo "Unknown option: $1" >&2
+            show_help
+            exit 1
+            ;;
+    esac
+done
+
+if [[ -z "$COMPOSITOR" ]]; then
+    echo "Error: --command COMPOSITOR is required" >&2
+    show_help
+    exit 1
+fi
+
+export XDG_SESSION_TYPE=wayland
+export QT_QPA_PLATFORM=wayland
+export QT_WAYLAND_DISABLE_WINDOWDECORATION=1
+export EGL_PLATFORM=gbm
+export DMS_RUN_GREETER=1
+export DMS_GREET_CFG_DIR="$CACHE_DIR"
+
+mkdir -p "$CACHE_DIR"
+
+QS_CMD="qs"
+if [[ "$DMS_PATH" == /* ]]; then
+    QS_CMD="qs -p $DMS_PATH"
+else
+    QS_CMD="qs -c $DMS_PATH"
+fi
+
+case "$COMPOSITOR" in
+    niri)
+        if [[ -z "$COMPOSITOR_CONFIG" ]]; then
+            TEMP_CONFIG=$(mktemp)
+            cat > "$TEMP_CONFIG" << NIRI_EOF
+hotkey-overlay {
+    skip-at-startup
+}
+
+environment {
+    DMS_RUN_GREETER "1"
+}
+
+spawn-at-startup "sh" "-c" "$QS_CMD; niri msg action quit --skip-confirmation"
+
+debug {
+  keep-max-bpc-unchanged
+}
+
+gestures {
+   hot-corners {
+     off
+   }
+}
+
+layout {
+  background-color "#000000"
+}
+NIRI_EOF
+            COMPOSITOR_CONFIG="$TEMP_CONFIG"
+        else
+            TEMP_CONFIG=$(mktemp)
+            cat "$COMPOSITOR_CONFIG" > "$TEMP_CONFIG"
+            cat >> "$TEMP_CONFIG" << NIRI_EOF
+
+spawn-at-startup "sh" "-c" "$QS_CMD; niri msg action quit --skip-confirmation"
+NIRI_EOF
+            COMPOSITOR_CONFIG="$TEMP_CONFIG"
+        fi
+        exec niri -c "$COMPOSITOR_CONFIG"
+        ;;
+
+    hyprland)
+        if [[ -z "$COMPOSITOR_CONFIG" ]]; then
+            TEMP_CONFIG=$(mktemp)
+            cat > "$TEMP_CONFIG" << HYPRLAND_EOF
+env = DMS_RUN_GREETER,1
+
+exec = sh -c "$QS_CMD; hyprctl dispatch exit"
+HYPRLAND_EOF
+            COMPOSITOR_CONFIG="$TEMP_CONFIG"
+        else
+            TEMP_CONFIG=$(mktemp)
+            cat "$COMPOSITOR_CONFIG" > "$TEMP_CONFIG"
+            cat >> "$TEMP_CONFIG" << HYPRLAND_EOF
+
+exec = sh -c "$QS_CMD; hyprctl dispatch exit"
+HYPRLAND_EOF
+            COMPOSITOR_CONFIG="$TEMP_CONFIG"
+        fi
+        exec Hyprland -c "$COMPOSITOR_CONFIG"
+        ;;
+
+    sway)
+        if [[ -z "$COMPOSITOR_CONFIG" ]]; then
+            TEMP_CONFIG=$(mktemp)
+            cat > "$TEMP_CONFIG" << SWAY_EOF
+exec "$QS_CMD; swaymsg exit"
+SWAY_EOF
+            COMPOSITOR_CONFIG="$TEMP_CONFIG"
+        else
+            TEMP_CONFIG=$(mktemp)
+            cat "$COMPOSITOR_CONFIG" > "$TEMP_CONFIG"
+            cat >> "$TEMP_CONFIG" << SWAY_EOF
+
+exec "$QS_CMD; swaymsg exit"
+SWAY_EOF
+            COMPOSITOR_CONFIG="$TEMP_CONFIG"
+        fi
+        exec sway -c "$COMPOSITOR_CONFIG"
+        ;;
+
+    *)
+        echo "Error: Unsupported compositor: $COMPOSITOR" >&2
+        echo "Supported compositors: niri, hyprland, sway" >&2
+        exit 1
+        ;;
+esac