feat: add configureable default for collapsing statuses

README.md

@@ -271,6 +271,7 @@ If you want to test it locally, see [Docker](#docker).
 | `ui.dark-mode`               | Whether to enable dark mode by default. Note that this is superseded by the user's operating system theme preferences.                   | `true`                     |
 | `ui.default-sort-by`         | Default sorting option for endpoints in the dashboard. Can be `name`, `group`, or `health`. Note that user preferences override this.    | `name`                     |
 | `ui.default-filter-by`       | Default filter option for endpoints in the dashboard. Can be `none`, `failing`, or `unstable`. Note that user preferences override this. | `none`                     |
+| `ui.default-group-collapse`  | Default collapse option for statuses in the dashboard. Can be either `true` or `false`. Note that user preferences override this.        | `false`                    |
 | `maintenance`                | [Maintenance configuration](#maintenance).                                                                                               | `{}`                       |
 
 If you want more verbose logging, you may set the `GATUS_LOG_LEVEL` environment variable to `DEBUG`.

config/ui/ui.go

@@ -21,11 +21,13 @@ const (
 )
 
 var (
-	defaultDarkMode = true
+	defaultDarkMode  = true
+	defaultGroupCollapse  = true
 
 	ErrButtonValidationFailed = errors.New("invalid button configuration: missing required name or link")
 	ErrInvalidDefaultSortBy   = errors.New("invalid default-sort-by value: must be 'name', 'group', or 'health'")
 	ErrInvalidDefaultFilterBy = errors.New("invalid default-filter-by value: must be 'none', 'failing', or 'unstable'")
+	ErrInvalidDefaultGroupCollapse = errors.New("invalid default-group-collapse value: must be a boolean")
 )
 
 // Config is the configuration for the UI of Gatus
@@ -40,6 +42,7 @@ type Config struct {
 	DarkMode        *bool    `yaml:"dark-mode,omitempty"`         // DarkMode is a flag to enable dark mode by default
 	DefaultSortBy   string   `yaml:"default-sort-by,omitempty"`   // DefaultSortBy is the default sort option ('name', 'group', 'health')
 	DefaultFilterBy string   `yaml:"default-filter-by,omitempty"` // DefaultFilterBy is the default filter option ('none', 'failing', 'unstable')
+	DefaultGroupCollapse *bool     `yaml:"default-group-collapse,omitempty"`  // DefaultGroupCollapse is a flag to enable/disable collapsing of groups by default
 
 	//////////////////////////////////////////////
 	// Non-configurable - used for UI rendering //
@@ -80,6 +83,7 @@ func GetDefaultConfig() *Config {
 		DarkMode:               &defaultDarkMode,
 		DefaultSortBy:          defaultSortBy,
 		DefaultFilterBy:        defaultFilterBy,
+		DefaultGroupCollapse:        &defaultGroupCollapse,
 		MaximumNumberOfResults: storage.DefaultMaximumNumberOfResults,
 	}
 }
@@ -117,6 +121,9 @@ func (cfg *Config) ValidateAndSetDefaults() error {
 	} else if cfg.DefaultFilterBy != "none" && cfg.DefaultFilterBy != "failing" && cfg.DefaultFilterBy != "unstable" {
 		return ErrInvalidDefaultFilterBy
 	}
+	if cfg.DefaultGroupCollapse == nil {
+	    cfg.DefaultGroupCollapse = &defaultGroupCollapse
+	}
 	for _, btn := range cfg.Buttons {
 		if err := btn.Validate(); err != nil {
 			return err