merged from gramsrv upstream

internal/rpc/help_app_update.go

@@ -0,0 +1,99 @@
+package rpc
+
+import (
+	"context"
+	"strings"
+
+	"go.uber.org/zap"
+
+	"github.com/iamxvbaba/td/tg"
+
+	ioscompat "telesrv/internal/compat/ios"
+	"telesrv/internal/updatecdn"
+)
+
+func (r *Router) onHelpGetAppUpdate(ctx context.Context, source string) (tg.HelpAppUpdateClass, error) {
+	if _, _, err := r.currentUserID(ctx); err != nil {
+		return nil, internalErr()
+	}
+	if r.deps.AppUpdates == nil {
+		return ioscompat.NoAppUpdate(), nil
+	}
+	info, ok := ClientInfoFrom(ctx)
+	if !ok {
+		return ioscompat.NoAppUpdate(), nil
+	}
+	platform := updatePlatform(info.ClientType())
+	if platform == "" {
+		return ioscompat.NoAppUpdate(), nil
+	}
+	langCode := strings.TrimSpace(info.LangCode)
+	if langCode == "" {
+		langCode = strings.TrimSpace(info.SystemLangCode)
+	}
+	resolved, err := r.deps.AppUpdates.Resolve(ctx, updatecdn.ResolveRequest{
+		Platform: platform,
+		Channel:  updateChannel(info),
+		Version:  info.AppVersion,
+		Source:   boundedUpdateSource(source),
+		LangCode: langCode,
+	})
+	if err != nil {
+		// Update discovery is advisory. Returning a bounded no-update response
+		// avoids turning a temporary CDN outage into a client-visible RPC 500.
+		r.log.Warn("application update resolve failed",
+			zap.String("platform", platform),
+			zap.String("app_version", info.AppVersion),
+			zap.Error(err))
+		return ioscompat.NoAppUpdate(), nil
+	}
+	if resolved == nil {
+		return ioscompat.NoAppUpdate(), nil
+	}
+	result := &tg.HelpAppUpdate{
+		ID:       resolved.ID,
+		Version:  resolved.Version,
+		Text:     resolved.Text,
+		Entities: []tg.MessageEntityClass{},
+	}
+	result.SetCanNotSkip(resolved.CanNotSkip)
+	if resolved.URL != "" {
+		result.SetURL(resolved.URL)
+	}
+	return result, nil
+}
+
+func updateChannel(info ClientInfo) string {
+	version := strings.ToLower(info.AppVersion)
+	switch {
+	case strings.Contains(version, "alpha"):
+		return "alpha"
+	case strings.Contains(version, "beta"):
+		return "beta"
+	default:
+		return "stable"
+	}
+}
+
+func boundedUpdateSource(source string) string {
+	source = strings.TrimSpace(source)
+	if len(source) > 256 {
+		return source[:256]
+	}
+	return source
+}
+
+func updatePlatform(clientType ClientType) string {
+	switch clientType {
+	case ClientTypeAndroid:
+		return "android"
+	case ClientTypeIOS:
+		return "ios"
+	case ClientTypeMacOS:
+		return "macos"
+	case ClientTypeTDesktop:
+		return "tdesktop"
+	default:
+		return ""
+	}
+}