feat: add automation features (auto-update, auto-start, scheduled updates)

backend/internal/services/scheduler.go

@@ -0,0 +1,92 @@
+package services
+
+import (
+	"log"
+	"sync"
+
+	"github.com/robfig/cron/v3"
+)
+
+type Scheduler struct {
+	cron     *cron.Cron
+	entryID  cron.EntryID
+	settings *SettingsManager
+	modlists *ModlistManager
+	steamcmd *SteamCmdManager
+	mu       sync.Mutex
+}
+
+func NewScheduler(settings *SettingsManager, modlists *ModlistManager, steamcmd *SteamCmdManager) *Scheduler {
+	return &Scheduler{
+		cron:     cron.New(),
+		settings: settings,
+		modlists: modlists,
+		steamcmd: steamcmd,
+	}
+}
+
+func (s *Scheduler) Start() {
+	s.cron.Start()
+	s.Refresh()
+}
+
+func (s *Scheduler) Stop() {
+	s.cron.Stop()
+}
+
+func (s *Scheduler) Refresh() {
+	s.mu.Lock()
+	defer s.mu.Unlock()
+
+	if s.entryID != 0 {
+		s.cron.Remove(s.entryID)
+		s.entryID = 0
+	}
+
+	sett, err := s.settings.Load()
+	if err != nil || sett.ScheduledUpdate == "" {
+		return
+	}
+
+	id, err := s.cron.AddFunc(sett.ScheduledUpdate, s.runScheduledUpdate)
+	if err != nil {
+		log.Printf("scheduler: invalid cron expression %q: %v", sett.ScheduledUpdate, err)
+		return
+	}
+	s.entryID = id
+	log.Printf("scheduler: scheduled update with cron %q", sett.ScheduledUpdate)
+}
+
+func (s *Scheduler) runScheduledUpdate() {
+	sett, err := s.settings.Load()
+	if err != nil {
+		return
+	}
+
+	if sett.SteamUser != "" && sett.SteamUser != "anonymous" {
+		log.Print("scheduler: running gameserver update")
+		if err := s.steamcmd.UpdateGame(sett.SteamBranch, sett.SteamUser); err != nil {
+			log.Printf("scheduler: game update failed: %v", err)
+		}
+	}
+
+	if sett.ActiveModlist != "" {
+		ml, err := s.modlists.Get(sett.ActiveModlist)
+		if err != nil {
+			log.Printf("scheduler: load modlist %s: %v", sett.ActiveModlist, err)
+			return
+		}
+		var modIDs []string
+		for _, m := range ml.Mods {
+			if m.Enabled {
+				modIDs = append(modIDs, m.ID)
+			}
+		}
+		if len(modIDs) > 0 {
+			log.Printf("scheduler: updating %d mod(s)", len(modIDs))
+			if err := s.steamcmd.DownloadMods(modIDs); err != nil {
+				log.Printf("scheduler: mod update failed: %v", err)
+			}
+		}
+	}
+}