Config: Update Progressive Web App (PWA) flag usage and defaults

Signed-off-by: Michael Mayer <[email protected]>

Author: lastzero

internal/config/config_app.go

@@ -11,6 +11,9 @@ import (
 	"github.com/photoprism/photoprism/pkg/txt"
 )
 
+// DefaultAppColor specifies the default app background and splash screen color.
+var DefaultAppColor = "#19191a"
+
 // AppName returns the app name when installed on a device.
 func (c *Config) AppName() string {
 	name := strings.TrimSpace(c.options.AppName)
@@ -58,10 +61,10 @@ func (c *Config) AppIcon() string {
 	return defaultIcon
 }
 
-// AppColor returns the app splash screen color when installed on a device.
+// AppColor returns the app background and splash screen color.
 func (c *Config) AppColor() string {
 	if appColor := clean.Color(c.options.AppColor); appColor == "" {
-		return "#000000"
+		return DefaultAppColor
 	} else {
 		return appColor
 	}

internal/config/config_app_test.go

@@ -42,11 +42,13 @@ func TestConfig_AppIcon(t *testing.T) {
 func TestConfig_AppColor(t *testing.T) {
 	c := NewConfig(CliTestContext())
 
-	assert.Equal(t, "#000000", c.AppColor())
+	assert.Equal(t, DefaultAppColor, c.AppColor())
 	c.options.AppColor = "#aBC123"
 	assert.Equal(t, "#abc123", c.AppColor())
-	c.options.AppColor = ""
+	c.options.AppColor = "#000000"
 	assert.Equal(t, "#000000", c.AppColor())
+	c.options.AppColor = ""
+	assert.Equal(t, DefaultAppColor, c.AppColor())
 }
 
 func TestConfig_AppIconsPath(t *testing.T) {

internal/config/flags.go

@@ -530,25 +530,25 @@ var Flags = CliFlags{
 		}}, {
 		Flag: &cli.StringFlag{
 			Name:    "app-name",
-			Usage:   "progressive web app `NAME` when installed on a device",
+			Usage:   "app `NAME` when installed as a Progressive Web App (PWA)",
 			Value:   "",
 			EnvVars: EnvVars("APP_NAME"),
 		}}, {
 		Flag: &cli.StringFlag{
 			Name:    "app-mode",
-			Usage:   "progressive web app `MODE` (fullscreen, standalone, minimal-ui, browser)",
+			Usage:   "app display `MODE` (fullscreen, standalone, minimal-ui, browser)",
 			Value:   "standalone",
 			EnvVars: EnvVars("APP_MODE"),
 		}}, {
 		Flag: &cli.StringFlag{
 			Name:    "app-icon",
-			Usage:   "home screen `ICON` (logo, app, crisp, mint, bold, square)",
+			Usage:   "home screen app `ICON` (logo, app, crisp, mint, bold, square)",
 			EnvVars: EnvVars("APP_ICON"),
 		}}, {
 		Flag: &cli.StringFlag{
 			Name:    "app-color",
-			Usage:   "splash screen `COLOR` code",
-			Value:   "#000000",
+			Usage:   "app background and splash screen `COLOR`",
+			Value:   DefaultAppColor,
 			EnvVars: EnvVars("APP_COLOR"),
 		}}, {
 		Flag: &cli.StringFlag{