Save task options (#4620)

* Support setting nested UI values
* Accept partial for configureUI
* Send partial UI
* Save scan, generate and auto-tag options on change
* Send partials in saveUI
* Save library task options on change

pkg/utils/map.go

@@ -0,0 +1,64 @@
+package utils
+
+import (
+	"strings"
+)
+
+// NestedMap is a map that supports nested keys.
+// It is expected that the nested maps are of type map[string]interface{}
+type NestedMap map[string]interface{}
+
+func (m NestedMap) Get(key string) (interface{}, bool) {
+	fields := strings.Split(key, ".")
+
+	current := m
+
+	for _, f := range fields[:len(fields)-1] {
+		v, found := current[f]
+		if !found {
+			return nil, false
+		}
+
+		current, _ = v.(map[string]interface{})
+		if current == nil {
+			return nil, false
+		}
+	}
+
+	ret, found := current[fields[len(fields)-1]]
+	return ret, found
+}
+
+func (m NestedMap) Set(key string, value interface{}) {
+	fields := strings.Split(key, ".")
+
+	current := m
+
+	for _, f := range fields[:len(fields)-1] {
+		v, ok := current[f].(map[string]interface{})
+		if !ok {
+			v = make(map[string]interface{})
+			current[f] = v
+		}
+
+		current = v
+	}
+
+	current[fields[len(fields)-1]] = value
+}
+
+// MergeMaps merges src into dest. If a key exists in both maps, the value from src is used.
+func MergeMaps(dest map[string]interface{}, src map[string]interface{}) {
+	for k, v := range src {
+		if _, ok := dest[k]; ok {
+			if srcMap, ok := v.(map[string]interface{}); ok {
+				if destMap, ok := dest[k].(map[string]interface{}); ok {
+					MergeMaps(destMap, srcMap)
+					continue
+				}
+			}
+		}
+
+		dest[k] = v
+	}
+}