package main

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

	"github.com/arnef/ebooks/internal/library"
	"github.com/arnef/ebooks/internal/users"
	"github.com/arnef/ebooks/internal/web"
)

func main() {
	booksDir := getenv("BOOKS_DIR", "books")
	addr := getenv("ADDR", ":8080")
	usersDB := getenv("USERS_DB", "users.db")

	store, err := users.Open(usersDB)
	if err != nil {
		log.Fatalf("users db: %v", err)
	}
	defer store.Close()

	lib := library.New(booksDir)
	h := web.NewHandler(lib, store)

	mux := http.NewServeMux()
	h.RegisterRoutes(mux)

	log.Printf("ebooks server listening on %s (books dir: %s)", addr, booksDir)
	if err := http.ListenAndServe(addr, mux); err != nil {
		log.Fatal(err)
	}
}

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