R-1199 reopened: a box with no list of its own reads the household's from the hub and adopts it, pushes its default once only when no household saved one; every push names its source; an empty saved list stays empty; R-1216 (D28 = A): the install page's swap sentence only when host swap is really short (shared case table); unreleased

controller/internal/notify/notifier.go

@@ -8,6 +8,7 @@ import (
 	"io"
 	"log"
 	"net/http"
+	"net/url"
 	"strings"
 	"sync"
 	"time"
@@ -1070,14 +1071,31 @@ type preferencesRequest struct {
 	// holds. OMITTED unless true: an empty address without it keeps the hub's no-clobber guard (an
 	// unconfigured box must never wipe a seeded address). Decoded by the hub's savePreferences.
 	EmailCleared bool `json:"email_cleared,omitempty"`
+	// Source (R-1199 reopened): PrefsSourceHousehold or PrefsSourceDefault. An older hub ignores it.
+	Source string `json:"source,omitempty"`
 }
 
-// SyncPreferences pushes the current notification preferences to the hub.
+// SyncPreferences pushes the household's saved notification preferences to the hub (source "household").
 // Synchronous — returns error for the handler to display to the user.
 // emailCleared (R-922) is settings.NotificationPrefs.EmailCleared — true only after a household's clear.
 func (n *Notifier) SyncPreferences(email string, enabledEvents []string, cooldownHours int, emailCleared bool) error {
+	_, err := n.SyncPreferencesAs(PrefsSourceHousehold, email, enabledEvents, cooldownHours, emailCleared)
+	return err
+}
+
+// PrefsSourceHousehold / PrefsSourceDefault (R-1199 reopened) tell the hub who chose the pushed list: the household
+// (the settings page, or the re-push of a list saved on this box) or the box's own default (nothing saved here and
+// the hub holds no household list). The hub never lets a default overwrite a household's list.
+const (
+	PrefsSourceHousehold = "household"
+	PrefsSourceDefault   = "default"
+)
+
+// SyncPreferencesAs is SyncPreferences with the source named. It returns the hub's status word: "ok", or "kept" when
+// the hub refused a default push because the household saved its own list (hub ≥ 0.165.0).
+func (n *Notifier) SyncPreferencesAs(source, email string, enabledEvents []string, cooldownHours int, emailCleared bool) (string, error) {
 	if !n.enabled {
-		return util.MsgError("err.notify.hub_nem_konfiguralt")
+		return "", util.MsgError("err.notify.hub_nem_konfiguralt")
 	}
 
 	payload := preferencesRequest{
@@ -1086,41 +1104,85 @@ func (n *Notifier) SyncPreferences(email string, enabledEvents []string, cooldow
 		EnabledEvents: enabledEvents,
 		CooldownHours: cooldownHours,
 		EmailCleared:  emailCleared,
+		Source:        source,
 	}
 
 	jsonData, err := json.Marshal(payload)
 	if err != nil {
-		return fmt.Errorf("marshal: %w", err)
+		return "", fmt.Errorf("marshal: %w", err)
 	}
 
-	url := n.hubURL + "/api/v1/preferences"
+	prefsURL := n.hubURL + "/api/v1/preferences"
 	if n.debug {
-		n.logger.Printf("[DEBUG] SyncPreferences: url=%s email=%s events=%v cooldown=%dh",
-			url, email, enabledEvents, cooldownHours)
+		n.logger.Printf("[DEBUG] SyncPreferences: url=%s source=%s email=%s events=%v cooldown=%dh",
+			prefsURL, source, email, enabledEvents, cooldownHours)
 	}
-	req, err := http.NewRequest("POST", url, bytes.NewReader(jsonData))
+	req, err := http.NewRequest("POST", prefsURL, bytes.NewReader(jsonData))
 	if err != nil {
-		return fmt.Errorf("request: %w", err)
+		return "", fmt.Errorf("request: %w", err)
 	}
 	req.Header.Set("Authorization", "Bearer "+n.apiKey)
 	req.Header.Set("Content-Type", "application/json")
 
 	resp, err := n.httpClient.Do(req)
 	if err != nil {
-		return util.MsgError("err.notify.hub_elerhetetlen", err)
+		return "", util.MsgError("err.notify.hub_elerhetetlen", err)
 	}
 	defer resp.Body.Close()
 
 	if resp.StatusCode >= 400 {
 		body, _ := io.ReadAll(io.LimitReader(resp.Body, 512))
-		return util.MsgError("err.notify.hub_error", resp.StatusCode, string(body))
+		return "", util.MsgError("err.notify.hub_error", resp.StatusCode, string(body))
+	}
+	var ack struct {
+		Status string `json:"status"`
+	}
+	_ = json.NewDecoder(io.LimitReader(resp.Body, 4096)).Decode(&ack) // an older hub answers {"status":"ok"} too
+	if ack.Status == "" {
+		ack.Status = "ok"
 	}
 
 	if n.debug {
 		n.logger.Printf("[DEBUG] SyncPreferences: response HTTP %d", resp.StatusCode)
 	}
-	n.logger.Printf("[INFO] Notification preferences synced to hub: email=%s, events=%v, cooldown=%dh, email_cleared=%t", email, enabledEvents, cooldownHours, emailCleared)
-	return nil
+	n.logger.Printf("[INFO] Notification preferences synced to hub: source=%s status=%s email=%s, events=%v, cooldown=%dh, email_cleared=%t", source, ack.Status, email, enabledEvents, cooldownHours, emailCleared)
+	return ack.Status, nil
+}
+
+// HubPrefs is the hub's stored notification list for this box's customer (GET /api/v1/preferences, hub ≥ 0.165.0).
+type HubPrefs struct {
+	Exists         bool     `json:"exists"`
+	HouseholdSaved bool     `json:"household_saved"`
+	Email          string   `json:"email"`
+	EnabledEvents  []string `json:"enabled_events"`
+	CooldownHours  int      `json:"cooldown_hours"`
+}
+
+// FetchPreferences reads the hub's stored list for this customer (R-1199 reopened): a box with no list of its own
+// adopts the household's instead of pushing its default over it. Any failure — an older hub (404), no network — is
+// an error, and the caller then pushes nothing.
+func (n *Notifier) FetchPreferences() (*HubPrefs, error) {
+	if !n.enabled {
+		return nil, util.MsgError("err.notify.hub_nem_konfiguralt")
+	}
+	req, err := http.NewRequest("GET", n.hubURL+"/api/v1/preferences?customer_id="+url.QueryEscape(n.customerID), nil)
+	if err != nil {
+		return nil, fmt.Errorf("request: %w", err)
+	}
+	req.Header.Set("Authorization", "Bearer "+n.apiKey)
+	resp, err := n.httpClient.Do(req)
+	if err != nil {
+		return nil, fmt.Errorf("hub unreachable: %w", err)
+	}
+	defer resp.Body.Close()
+	if resp.StatusCode != http.StatusOK {
+		return nil, fmt.Errorf("hub answered HTTP %d", resp.StatusCode)
+	}
+	var hp HubPrefs
+	if err := json.NewDecoder(io.LimitReader(resp.Body, 1<<16)).Decode(&hp); err != nil {
+		return nil, fmt.Errorf("decode: %w", err)
+	}
+	return &hp, nil
 }
 
 // ── Test notification ────────────────────────────────────────────────