feat: implement core daemon (config, fire client, scheduler)

self-hosted/main.go

@@ -0,0 +1,61 @@
+package main
+
+import (
+	"context"
+	"log"
+	"log/slog"
+	"net/http"
+	"os"
+	"os/signal"
+	"syscall"
+	"time"
+)
+
+const (
+	httpClientTimeout = 30 * time.Second
+	httpFireTimeout   = 30 * time.Second
+	shutdownTimeout   = 35 * time.Second
+)
+
+func main() {
+	cfg, err := Load()
+	if err != nil {
+		log.Fatalf("config: %v", err)
+	}
+
+	logger := newLogger(cfg.LogLevel)
+	slog.SetDefault(logger)
+
+	fire := &FireClient{
+		URL:      cfg.FireURL,
+		Token:    cfg.Token,
+		HTTP:     &http.Client{Timeout: httpClientTimeout},
+		Template: cfg.Template,
+		TZ:       cfg.Location,
+		Log:      logger,
+	}
+
+	sched, err := NewScheduler(cfg, fire, logger)
+	if err != nil {
+		logger.Error("scheduler init failed", "err", err.Error())
+		os.Exit(1)
+	}
+
+	ctx, cancel := signal.NotifyContext(context.Background(), os.Interrupt, syscall.SIGTERM)
+	defer cancel()
+
+	sched.Start()
+	logger.Info("started",
+		"schedules", cfg.Schedules,
+		"tz", cfg.Location.String(),
+		"entries", sched.EntryCount(),
+	)
+
+	<-ctx.Done()
+	logger.Info("shutting down")
+
+	stopCtx, stopCancel := context.WithTimeout(context.Background(), shutdownTimeout)
+	defer stopCancel()
+	sched.Stop(stopCtx)
+	logger.Info("stopped cleanly")
+}