// Command server 启动 sundynix-gateway —— 第 2 层业务网关 / 统一接入层。
package main

import (
	"log"
	"os"

	"github.com/sundynix/sundynix-gateway/internal/nats"
	"github.com/sundynix/sundynix-gateway/internal/router"
	"github.com/sundynix/sundynix-gateway/internal/store"
)

func main() {
	natsURL := envOr("NATS_URL", "nats://localhost:4222")

	db := store.MustOpenPostgres()   // MainDB: Users / Billing / DSL
	cache := store.MustOpenRedis()   // CacheDB: Session / Rate Limit
	bus := nats.MustConnect(natsURL) // 接入 NATS 零拷贝骨干网 + 声明任务流
	defer bus.Close()

	r := router.New(db, cache, bus)
	addr := envOr("GATEWAY_ADDR", ":8080")
	log.Printf("[gateway] listening on %s", addr)
	if err := r.Run(addr); err != nil {
		log.Fatalf("[gateway] exit: %v", err)
	}
}

func envOr(key, def string) string {
	if v := os.Getenv(key); v != "" {
		return v
	}
	return def
}