Update dms-greeter permissions & post install

dms-greeter.spec

@@ -54,7 +54,7 @@ install -Dm755 Modules/Greetd/assets/dms-greeter %{buildroot}%{_bindir}/dms-gree
 install -Dm644 Modules/Greetd/README.md %{buildroot}%{_docdir}/dms-greeter/README.md
 
 # Create cache directory for greeter data
-install -dm750 %{buildroot}%{_sharedstatedir}/cache/dms-greeter
+install -dm750 %{buildroot}%{_localstatedir}/cache/dms-greeter
 
 # Remove build and development files
 rm -rf %{buildroot}%{_sysconfdir}/xdg/quickshell/dms-greeter/.git*
@@ -69,7 +69,7 @@ rm -f %{buildroot}%{_sysconfdir}/xdg/quickshell/dms-greeter/dms-greeter.spec
 %doc %{_docdir}/dms-greeter/README.md
 %{_bindir}/dms-greeter
 %{_sysconfdir}/xdg/quickshell/dms-greeter/
-%dir %attr(0750,greeter,greeter) %{_sharedstatedir}/cache/dms-greeter
+%dir %attr(0750,greeter,greeter) %{_localstatedir}/cache/dms-greeter
 
 %pre
 # Create greeter user/group if they don't exist (greetd expects this)
@@ -79,5 +79,74 @@ getent passwd greeter >/dev/null || \
     -c "System Greeter" greeter
 exit 0
 
+%post
+# Set SELinux context for the wrapper script on Fedora systems
+if [ -x /usr/sbin/semanage ]; then
+    semanage fcontext -a -t bin_t %{_bindir}/dms-greeter 2>/dev/null || true
+    restorecon -v %{_bindir}/dms-greeter 2>/dev/null || true
+fi
+
+# Auto-configure greetd if config file exists and contains no dms-greeter command
+GREETD_CONFIG="/etc/greetd/config.toml"
+if [ -f "$GREETD_CONFIG" ] && ! grep -q "dms-greeter" "$GREETD_CONFIG"; then
+    # Backup existing config
+    BACKUP_FILE="${GREETD_CONFIG}.backup-$(date +%%Y%%m%%d-%%H%%M%%S)"
+    cp "$GREETD_CONFIG" "$BACKUP_FILE" 2>/dev/null || true
+
+    # Check if niri or hyprland exists
+    COMPOSITOR="niri"
+    if ! command -v niri >/dev/null 2>&1; then
+        if command -v Hyprland >/dev/null 2>&1; then
+            COMPOSITOR="hyprland"
+        fi
+    fi
+
+    # Update command in default_session section
+    sed -i "/^\[default_session\]/,/^\[/ s|^command =.*|command = \"/usr/bin/dms-greeter --command $COMPOSITOR\"|" "$GREETD_CONFIG"
+    sed -i '/^\[default_session\]/,/^\[/ s|^user =.*|user = "greeter"|' "$GREETD_CONFIG"
+fi
+
+cat << EOF
+
+===============================================================================
+  DMS Greeter Installation Complete!
+===============================================================================
+
+Configuration status:
+  - Greeter cache directory: /var/cache/dms-greeter (created with proper permissions)
+  - SELinux contexts: Applied (if semanage available)
+  - Greetd config: $([ -f "$GREETD_CONFIG" ] && grep -q "dms-greeter" "$GREETD_CONFIG" && echo "Auto-configured ✓" || echo "Needs manual setup")
+
+Next steps to enable the greeter:
+
+1. IMPORTANT: Disable any existing display managers:
+   sudo systemctl disable gdm sddm lightdm
+   (Only greetd should run as the display manager)
+
+2. Verify greetd configuration:
+   Check /etc/greetd/config.toml contains:
+
+   [default_session]
+   user = "greeter"
+   command = "/usr/bin/dms-greeter --command niri"
+
+   (Also supported: hyprland, sway)
+   Note: Existing config backed up to config.toml.backup-* if modified
+
+3. Enable greetd service:
+   sudo systemctl enable greetd
+
+4. (Optional) Sync your user's theme with the greeter:
+   sudo usermod -aG greeter YOUR_USERNAME
+   # Then LOGOUT and LOGIN to apply group membership
+   ln -sf ~/.config/DankMaterialShell/settings.json /var/cache/dms-greeter/settings.json
+   ln -sf ~/.local/state/DankMaterialShell/session.json /var/cache/dms-greeter/session.json
+   ln -sf ~/.cache/quickshell/dankshell/dms-colors.json /var/cache/dms-greeter/colors.json
+
+Documentation: /usr/share/doc/dms-greeter/README.md
+===============================================================================
+
+EOF
+
 %changelog
 {{{ git_dir_changelog }}}