package main

import (
	"context"
	"errors"
	"io/fs"
	"log"
	"net/http"
	"os"
	"os/signal"
	"syscall"
	"time"

	"trade/web/internal/auth"
	"trade/web/internal/config"
	"trade/web/internal/handlers"
	"trade/web/internal/router"
	"trade/web/internal/store"
)

func main() {
	cfg, err := config.Load()
	if err != nil {
		log.Fatalf("config: %v", err)
	}

	futures, err := store.OpenFutures(cfg.DatabaseURL)
	if err != nil {
		log.Fatalf("open futures: %v", err)
	}
	defer futures.Close()

	authDB, err := store.OpenAuth(cfg.AuthDBPath)
	if err != nil {
		log.Fatalf("open auth: %v", err)
	}
	defer authDB.Close()

	if err := auth.Bootstrap(authDB); err != nil {
		log.Fatalf("bootstrap: %v", err)
	}

	deps := &handlers.Deps{Auth: authDB, Futures: futures, TushareURL: cfg.TushareAPIURL}

	dist, err := fs.Sub(distFS, "dist")
	if err != nil {
		log.Fatalf("embed dist: %v", err)
	}

	srv := &http.Server{
		Addr:              cfg.ListenAddr,
		Handler:           router.New(deps, dist),
		ReadHeaderTimeout: 10 * time.Second,
	}

	idle := make(chan struct{})
	go func() {
		stop := make(chan os.Signal, 1)
		signal.Notify(stop, os.Interrupt, syscall.SIGTERM)
		<-stop
		log.Println("shutting down ...")
		ctx, cancel := context.WithTimeout(context.Background(), 5*time.Second)
		defer cancel()
		_ = srv.Shutdown(ctx)
		close(idle)
	}()

	log.Printf("web 监听 %s", cfg.ListenAddr)
	if err := srv.ListenAndServe(); err != nil && !errors.Is(err, http.ErrServerClosed) {
		log.Fatalf("listen: %v", err)
	}
	<-idle
}