package main

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

	"billing/internal/webdemo"
)

func main() {
	listen := flag.String("listen", "127.0.0.1:8320", "HTTP listen address")
	inputName := flag.String("input", "", "demo input; supported value: fake")
	databasePath := flag.String("database", "", "optional SQLite data source for the fake demo")
	flag.Parse()

	if *inputName != "fake" {
		fmt.Fprintln(os.Stderr, "missing supported -input value: fake")
		os.Exit(2)
	}

	var input webdemo.Input = webdemo.NewFakeInput()
	if *databasePath != "" {
		databaseInput, err := webdemo.NewDatabaseInput(*databasePath)
		if err != nil {
			log.Fatal(err)
		}
		input = databaseInput
		defer databaseInput.Close()
	}

	server := &http.Server{Addr: *listen, Handler: webdemo.NewServer(input)}
	log.Printf("billing web demo: http://%s/ui", *listen)
	log.Fatal(server.ListenAndServe())
}