package main

import (
	"flag"
	"net"
	"net/http"

	"github.com/NYTimes/gziphandler"
	"github.com/astaxie/session"
	_ "github.com/astaxie/session/providers/memory"
	"github.com/jinzhu/gorm"
	_ "github.com/jinzhu/gorm/dialects/postgres"
	"github.com/julienschmidt/httprouter"
	"github.com/rs/cors"

	libconfig "dev.sum7.de/sum7/warehost/config"
	log "dev.sum7.de/sum7/warehost/lib/log"
	"dev.sum7.de/sum7/warehost/system"
)

var (
	configFile   string
	config       *libconfig.Config
	dbconnection *gorm.DB
	sessions     *session.Manager
)

func main() {
	var err error
	flag.StringVar(&configFile, "c", "config.yml", "path of configuration file")
	flag.Parse()
	config = libconfig.ReadConfigFile(configFile)
	log.NewLogger(config.Log.Path)

	// Session mgmt
	sessions, _ = session.NewManager("memory", "session", 3600)
	go sessions.GC()

	// Main Databaseconnection
	dbconnection, err = gorm.Open("postgres", config.Database)
	if err != nil {
		log.Log.Fatal("database connection: ", err)
	}
	defer dbconnection.Close()
	dbconnection.SingularTable(true)
	dbconnection.LogMode(config.DatabaseDebug)
	//load system Models to database
	system.SyncModels(dbconnection)

	// API routes
	router := httprouter.New()
	system.NewAPI(config, sessions, dbconnection, router, "")

	// Fallback filesystem
	if config.Webroot != "" {
		router.NotFound = gziphandler.GzipHandler(http.FileServer(http.Dir(config.Webroot)))
	}

	// Manage CORS (JsonOutput allow requested -> lib/api)
	c := cors.New(cors.Options{
		AllowedOrigins:   []string{config.API.AllowedOrigins},
		AllowCredentials: true,
	})
	handler := c.Handler(router)
	// Start server
	address := net.JoinHostPort(config.API.Address, config.API.Port)
	log.Log.Info("starting api on ", address)
	// TODO bad
	log.Log.Fatal(http.ListenAndServe(address, handler))
}