// Command llmsproxy is a standalone gateway that exposes multiple upstream LLM
// sources behind a unified OpenAI-compatible HTTP API. Protocol differences are
// handled by Lua adapters (per source), optionally signing outgoing requests.
// It supports explicit model selection or AUTO routing by priority, image
// generation, multimodal payloads, a web UI for adapter/source management, and
// concurrent/queued scheduling with backoff and failover.
package main

import (
	"flag"
	"log"
	"net/http"
	"os"
	"os/signal"
	"syscall"
	"time"

	"llmsproxy/internal/core"
	"llmsproxy/internal/gateway"
)

func main() {
	cfgPath := flag.String("config", "config.yaml", "path to gateway config file")
	flag.Parse()

	c, err := core.New(*cfgPath)
	if err != nil {
		log.Fatalf("[llmsproxy] core: %v", err)
	}
	defer c.Close()

	gw, err := gateway.New(c, c.GatewayKeys())
	if err != nil {
		log.Fatalf("[llmsproxy] gateway: %v", err)
	}

	srv := &http.Server{
		Addr:              c.Listen(),
		Handler:           gw.Handler(),
		ReadHeaderTimeout: 10 * time.Second,
	}
	go func() {
		log.Printf("[llmsproxy] listening on %s (default_model=%s, models=%v, adapters=%d)",
			c.Listen(), c.DefaultModel(), c.Registry().ModelList(), len(c.ListAdapters()))
		if err := srv.ListenAndServe(); err != nil && err != http.ErrServerClosed {
			log.Fatalf("[llmsproxy] server: %v", err)
		}
	}()

	stop := make(chan os.Signal, 1)
	signal.Notify(stop, syscall.SIGINT, syscall.SIGTERM)
	<-stop
	log.Printf("[llmsproxy] shutting down")
}