feat: show new updates in dashboard (#690)

* feat: show new update banner

* feat(http): add request logger

* refactor: updates checker

* feat: make update check optional

* fix: empty releases

* add toggle switch for update checks

* feat: toggle updates check from settings

* feat: toggle updates check from settings

* feat: check on toggle enabled

---------

Co-authored-by: soup <soup@r4tio.dev>

internal/update/update.go

@@ -0,0 +1,71 @@
+package update
+
+import (
+	"context"
+	"sync"
+
+	"github.com/autobrr/autobrr/internal/domain"
+	"github.com/autobrr/autobrr/internal/logger"
+	"github.com/autobrr/autobrr/pkg/version"
+
+	"github.com/rs/zerolog"
+)
+
+type Service struct {
+	log    zerolog.Logger
+	config *domain.Config
+
+	m              sync.RWMutex
+	releaseChecker *version.Checker
+	latestRelease  *version.Release
+}
+
+func NewUpdate(log logger.Logger, config *domain.Config) *Service {
+	return &Service{
+		log:            log.With().Str("module", "update").Logger(),
+		config:         config,
+		releaseChecker: version.NewChecker("autobrr", "autobrr", config.Version),
+	}
+}
+
+func (s *Service) GetLatestRelease(ctx context.Context) *version.Release {
+	s.m.RLock()
+	defer s.m.RUnlock()
+	return s.latestRelease
+}
+
+func (s *Service) CheckUpdates(ctx context.Context) {
+	if _, err := s.CheckUpdateAvailable(ctx); err != nil {
+		s.log.Error().Err(err).Msg("error checking new release")
+		return
+	}
+
+	return
+}
+
+func (s *Service) CheckUpdateAvailable(ctx context.Context) (*version.Release, error) {
+	s.log.Trace().Msg("checking for updates...")
+
+	newAvailable, newVersion, err := s.releaseChecker.CheckNewVersion(ctx, s.config.Version)
+	if err != nil {
+		s.log.Error().Err(err).Msg("could not check for new release")
+		return nil, nil
+	}
+
+	if newAvailable {
+		s.log.Info().Msgf("autobrr outdated, found newer release: %s", newVersion.TagName)
+
+		s.m.Lock()
+		defer s.m.Unlock()
+
+		if s.latestRelease != nil && s.latestRelease.TagName == newVersion.TagName {
+			return nil, nil
+		}
+
+		s.latestRelease = newVersion
+
+		return newVersion, nil
+	}
+
+	return nil, nil
+}