add ui, new config opts

pkg/econet/econetui/pending.go

@@ -0,0 +1,54 @@
+package econetui
+
+import (
+	"sync"
+	"time"
+)
+
+// pendingStore holds best-effort "desired mode" hints for the brief, async
+// window between a SetMode publish and the Rheem cloud reporting the new mode.
+// Entries expire after a TTL so a mode change that never takes hold quietly
+// falls back to the reported state (a "fresh get") rather than showing a stuck
+// pending badge forever.
+type pendingStore struct {
+	mu  sync.Mutex
+	ttl time.Duration
+	m   map[string]pendingEntry
+}
+
+type pendingEntry struct {
+	desired   string // desired mode slug
+	expiresAt time.Time
+}
+
+func newPendingStore(ttl time.Duration) *pendingStore {
+	return &pendingStore{ttl: ttl, m: make(map[string]pendingEntry)}
+}
+
+func (p *pendingStore) set(serial, desired string) {
+	p.mu.Lock()
+	defer p.mu.Unlock()
+	p.m[serial] = pendingEntry{desired: desired, expiresAt: time.Now().Add(p.ttl)}
+}
+
+// get returns the desired mode slug for a serial, or ("", false) if there is no
+// pending change or it has expired (expired entries are dropped).
+func (p *pendingStore) get(serial string) (string, bool) {
+	p.mu.Lock()
+	defer p.mu.Unlock()
+	e, ok := p.m[serial]
+	if !ok {
+		return "", false
+	}
+	if time.Now().After(e.expiresAt) {
+		delete(p.m, serial)
+		return "", false
+	}
+	return e.desired, true
+}
+
+func (p *pendingStore) clear(serial string) {
+	p.mu.Lock()
+	defer p.mu.Unlock()
+	delete(p.m, serial)
+}