package main

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

	"git.tavo.one/tavo/axiom/database"
	"git.tavo.one/tavo/axiom/handlers"
	"git.tavo.one/tavo/axiom/storage"
)

func init() {
	needed := []string{
		"PRODUCTION",
		"PORT",
		"APP_DATA_DIR",
		"DB_CONNDVR",
		"DB_CONNSTR",
	}

	for _, v := range needed {
		if os.Getenv(v) == "" {
			log.Fatalf("missing environment varialbe: %s", v)
		}
	}
}

func main() {
	db, err := database.Init(os.Getenv("DB_CONNDVR"), os.Getenv("DB_CONNSTR"))
	if err != nil {
		log.Fatalf("failed to initialize database: %v", err)
	}
	defer db.Close()

	s3, err := storage.New(os.Getenv("APP_DATA_DIR"), 4<<20)
	if err != nil {
		log.Fatalf("failed to initialize storage: %v", err)
	}

	handlerConfig := handlers.Config{
		Production: os.Getenv("PRODUCTION") == "1",
		Views:      nil,
		DB:         db,
		S3:         s3,
	}
	handler := handlers.New(handlerConfig)

	router := http.NewServeMux()
	router.HandleFunc("GET /", handler.SampleIndex)

	stop := make(chan os.Signal, 1)
	signal.Notify(stop, syscall.SIGINT, syscall.SIGTERM)

	port := os.Getenv("PORT")

	go func() {
		log.Printf("starting on :%s...", port)

		if err := http.ListenAndServe(":"+port, router); err != nil {
			log.Fatalf("fatal: failed to start on port %s: %v", port, err)
		}
	}()

	<-stop

	log.Printf("shutting down...")
}