NavTree: Refactor out the navtree building from api/index.go and into it's own service (#55552)

pkg/services/navtree/models.go

@@ -0,0 +1,69 @@
+package navtree
+
+const (
+	// These weights may be used by an extension to reliably place
+	// itself in relation to a particular item in the menu. The weights
+	// are negative to ensure that the default items are placed above
+	// any items with default weight.
+
+	WeightSavedItems = (iota - 20) * 100
+	WeightCreate
+	WeightDashboard
+	WeightExplore
+	WeightAlerting
+	WeightDataConnections
+	WeightPlugin
+	WeightConfig
+	WeightAdmin
+	WeightProfile
+	WeightHelp
+)
+
+const (
+	NavSectionCore   string = "core"
+	NavSectionPlugin string = "plugin"
+	NavSectionConfig string = "config"
+)
+
+type NavLink struct {
+	Id               string     `json:"id,omitempty"`
+	Text             string     `json:"text"`
+	Description      string     `json:"description,omitempty"`
+	Section          string     `json:"section,omitempty"`
+	SubTitle         string     `json:"subTitle,omitempty"`
+	Icon             string     `json:"icon,omitempty"` // Available icons can be browsed in Storybook: https://developers.grafana.com/ui/latest/index.html?path=/story/docs-overview-icon--icons-overview
+	Img              string     `json:"img,omitempty"`
+	Url              string     `json:"url,omitempty"`
+	Target           string     `json:"target,omitempty"`
+	SortWeight       int64      `json:"sortWeight,omitempty"`
+	Divider          bool       `json:"divider,omitempty"`
+	HideFromMenu     bool       `json:"hideFromMenu,omitempty"`
+	HideFromTabs     bool       `json:"hideFromTabs,omitempty"`
+	ShowIconInNavbar bool       `json:"showIconInNavbar,omitempty"`
+	RoundIcon        bool       `json:"roundIcon,omitempty"`
+	Children         []*NavLink `json:"children,omitempty"`
+	HighlightText    string     `json:"highlightText,omitempty"`
+	HighlightID      string     `json:"highlightId,omitempty"`
+	EmptyMessageId   string     `json:"emptyMessageId,omitempty"`
+}
+
+// NavIDCfg is the id for org configuration navigation node
+const NavIDCfg = "cfg"
+
+func GetServerAdminNode(children []*NavLink) *NavLink {
+	url := ""
+	if len(children) > 0 {
+		url = children[0].Url
+	}
+	return &NavLink{
+		Text:         "Server admin",
+		SubTitle:     "Manage all users and orgs",
+		HideFromTabs: true,
+		Id:           "admin",
+		Icon:         "shield",
+		Url:          url,
+		SortWeight:   WeightAdmin,
+		Section:      NavSectionConfig,
+		Children:     children,
+	}
+}