package main

import (
	"flag"
	"fmt"
	"net/http"
	"os"
	"os/signal"
	"syscall"

	"github.com/go-kit/kit/log"

	svc "git.abbiamoundominio.org/hamcha/bacheca"
	"git.abbiamoundominio.org/hamcha/bacheca/storage"
	boltbackend "git.abbiamoundominio.org/hamcha/bacheca/storage/bolt"
	filebackend "git.abbiamoundominio.org/hamcha/bacheca/storage/file"
)

func main() {
	httpPort := flag.Int("http.port", 8080, "HTTP listen port")
	dbtype := flag.String("storage.type", "bolt", "Storage backend type")
	dbfile := flag.String("storage.file", "bacheca.db", "Storage file or path, for file-based backends (bolt)")
	flag.Parse()

	var backend storage.Backend
	switch *dbtype {
	case "bolt":
		boltdb, err := boltbackend.MakeBoltBackend(*dbfile)
		if err != nil {
			panic(err)
		}
		defer boltdb.Close()
		backend = boltdb
	case "file":
		filebackend, err := filebackend.MakeFileBackend(*dbfile)
		if err != nil {
			panic(err)
		}
		backend = filebackend
	default:
		panic("unknown storage backend type (-storage.type), check help for supported backends")
	}

	var logger log.Logger
	{
		logger = log.NewLogfmtLogger(os.Stderr)
		logger = log.With(logger, "ts", log.DefaultTimestampUTC)
		logger = log.With(logger, "caller", log.DefaultCaller)
	}

	s := svc.MakeService(backend)
	handler := svc.MakeHTTPHandler(s, logger)

	//TODO Add auth middleware

	errs := make(chan error)
	go func() {
		c := make(chan os.Signal)
		signal.Notify(c, syscall.SIGINT, syscall.SIGTERM)
		errs <- fmt.Errorf("%s", <-c)
	}()

	go func() {
		bind := fmt.Sprintf(":%d", *httpPort)
		logger.Log("transport", "HTTP", "addr", bind)
		errs <- http.ListenAndServe(bind, handler)
	}()

	logger.Log("exit", <-errs)
}