Initial commit: CarrotAssistant backend (Go + Gin + SQLite, OpenAI-compatible agent runtime)

cmd/server/main.go

@@ -0,0 +1,81 @@
+// Package main is the CarrotAssistant backend entrypoint.
+//
+// It loads configuration, opens the database, bootstraps an initial admin
+// account if none exists, and serves HTTP until interrupted.
+package main
+
+import (
+	"context"
+	"fmt"
+	"log"
+	"net/http"
+	"os"
+	"os/signal"
+	"syscall"
+	"time"
+
+	"code.littlelan.cn/CarrotAssistant/backend/internal/config"
+	"code.littlelan.cn/CarrotAssistant/backend/internal/security"
+	"code.littlelan.cn/CarrotAssistant/backend/internal/server"
+	"code.littlelan.cn/CarrotAssistant/backend/internal/store"
+)
+
+func main() {
+	cfg, err := config.Load()
+	if err != nil {
+		log.Fatalf("load config: %v", err)
+	}
+	log.Printf("data dir: %s", cfg.DataDir)
+
+	db, err := store.Open(cfg.DBPath)
+	if err != nil {
+		log.Fatalf("open db: %v", err)
+	}
+
+	crypto, err := security.NewCrypto(cfg.MasterKey)
+	if err != nil {
+		log.Fatalf("init crypto: %v", err)
+	}
+
+	// Bootstrap an admin account on first run so the console is reachable.
+	// Production should set ADMIN_BOOTSTRAP_USER / ADMIN_BOOTSTRAP_PASSWORD.
+	if cfg.AdminBootstrapUser != "" {
+		if err := server.EnsureAdmin(db, cfg.AdminBootstrapUser, cfg.AdminBootstrapPassword); err != nil {
+			log.Printf("ensure admin: %v", err)
+		}
+	}
+
+	deps := server.Deps{
+		DB:        db,
+		Config:    cfg,
+		Crypto:    crypto,
+		SkillsDir: cfg.SkillsDir,
+	}
+
+	handler := server.New(deps)
+
+	srv := &http.Server{
+		Addr:              cfg.HTTPAddr,
+		Handler:           handler,
+		ReadHeaderTimeout: 10 * time.Second,
+	}
+
+	go func() {
+		log.Printf("listening on %s", cfg.HTTPAddr)
+		if err := srv.ListenAndServe(); err != nil && err != http.ErrServerClosed {
+			log.Fatalf("server: %v", err)
+		}
+	}()
+
+	// Graceful shutdown on SIGINT / SIGTERM.
+	stop := make(chan os.Signal, 1)
+	signal.Notify(stop, syscall.SIGINT, syscall.SIGTERM)
+	<-stop
+	log.Println("shutting down")
+
+	ctx, cancel := context.WithTimeout(context.Background(), 10*time.Second)
+	defer cancel()
+	if err := srv.Shutdown(ctx); err != nil {
+		fmt.Fprintf(os.Stderr, "shutdown: %v\n", err)
+	}
+}