package main

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

	"git.sendico.io/tech/sxchnge/bff/internal/httpapi"
)

func main() {
	if err := run(); err != nil {
		slog.Error("BFF stopped", "error", err)
		os.Exit(1)
	}
}

func run() error {
	addr := os.Getenv("SXCHNGE_HTTP_ADDR")
	if addr == "" {
		addr = "127.0.0.1:8082"
	}
	server := &http.Server{Addr: addr, Handler: httpapi.New(), ReadHeaderTimeout: 5 * time.Second, ReadTimeout: 15 * time.Second, WriteTimeout: 15 * time.Second, IdleTimeout: 60 * time.Second, MaxHeaderBytes: 1 << 20}
	ctx, stop := signal.NotifyContext(context.Background(), os.Interrupt, syscall.SIGTERM)
	defer stop()
	failures := make(chan error, 1)
	go func() { failures <- server.ListenAndServe() }()
	slog.Info("BFF operational shell starting", "address", addr, "provider_configured", false)
	select {
	case err := <-failures:
		if errors.Is(err, http.ErrServerClosed) {
			return nil
		}
		return err
	case <-ctx.Done():
		shutdown, cancel := context.WithTimeout(context.Background(), 10*time.Second)
		defer cancel()
		slog.Info("BFF shutting down")
		return server.Shutdown(shutdown)
	}
}