package main

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

	"github.com/gorilla/handlers"
	"github.com/pkg/profile"

	"git.andreafazzi.eu/andrea/oef/config"
	oef_handlers "git.andreafazzi.eu/andrea/oef/handlers"
	"git.andreafazzi.eu/andrea/oef/orm"
	"git.andreafazzi.eu/andrea/oef/renderer"
)

const (
	MaxNumRetries     = 20
	RetryTimeInterval = 10
)

var (
	db  *orm.Database
	err error
)

func main() {
	configFile := flag.String("config", "config/config.yaml", "Load the given config file")
	flag.Parse()

	log.Println("Loading config file...")

	conf := new(config.ConfigT)
	err = config.ReadFile(*configFile, conf)
	if err != nil {
		panic(err)
	}

	log.Println("Starting OEF (Dev Branch) and waiting for the DB...")

	count := MaxNumRetries
	wait := true

	for wait && count > 0 {
		db, err = orm.NewDatabase(conf, orm.Models)
		if err != nil {
			count--
			log.Println(err)
			log.Printf("Remaining retries: %d", count)
			time.Sleep(time.Second * RetryTimeInterval)
			continue
		}
		wait = false
	}

	if conf.Orm.AutoMigrate {
		log.Print("Automigrating...")
		db.AutoMigrate()
	}

	log.Println("Eventually write categories on DB...")
	orm.CreateCategories(db)

	log.Println("Eventually write regions on DB...")
	orm.CreateRegions(db)

	if conf.Profiling {
		log.Println("Start profiling...")
		defer profile.Start().Stop()
	}

	htmlRenderer, err := renderer.NewHTMLRenderer("templates")
	if err != nil {
		panic(err)
	}

	jsonRenderer, err := renderer.NewJSONRenderer()
	if err != nil {
		panic(err)
	}

	renderer := map[string]renderer.Renderer{
		"html": htmlRenderer,
		"json": jsonRenderer,
	}

	conf.Handlers.Permissions = map[string]map[string][]int{
		"administrator": map[string][]int{
			"Contest":     []int{oef_handlers.PermissionCreate, oef_handlers.PermissionRead, oef_handlers.PermissionReadAll, oef_handlers.PermissionUpdate, oef_handlers.PermissionDelete},
			"Participant": []int{oef_handlers.PermissionCreate, oef_handlers.PermissionRead, oef_handlers.PermissionReadAll, oef_handlers.PermissionUpdate, oef_handlers.PermissionDelete},
			"School":      []int{oef_handlers.PermissionCreate, oef_handlers.PermissionRead, oef_handlers.PermissionReadAll, oef_handlers.PermissionUpdate, oef_handlers.PermissionDelete},
			"Question":    []int{oef_handlers.PermissionCreate, oef_handlers.PermissionRead, oef_handlers.PermissionReadAll, oef_handlers.PermissionUpdate, oef_handlers.PermissionDelete},
			"Answer":      []int{oef_handlers.PermissionCreate, oef_handlers.PermissionRead, oef_handlers.PermissionReadAll, oef_handlers.PermissionUpdate, oef_handlers.PermissionDelete},
			"Response":    []int{oef_handlers.PermissionCreate, oef_handlers.PermissionRead, oef_handlers.PermissionReadAll, oef_handlers.PermissionUpdate, oef_handlers.PermissionDelete},
		},

		"school": map[string][]int{
			"Participant": []int{oef_handlers.PermissionCreate, oef_handlers.PermissionRead, oef_handlers.PermissionReadAll, oef_handlers.PermissionUpdate, oef_handlers.PermissionDelete},
			"School":      []int{oef_handlers.PermissionRead, oef_handlers.PermissionUpdate},
		},

		"participant": map[string][]int{
			"Participant": []int{oef_handlers.PermissionRead},
			"Response":    []int{oef_handlers.PermissionUpdate, oef_handlers.PermissionRead},
		},

		"subscriber": map[string][]int{
			"School": []int{oef_handlers.PermissionCreate, oef_handlers.PermissionRead},
		},
	}

	conf.Handlers.PathPatterns = oef_handlers.DefaultPathPatterns
	conf.Handlers.APIPathPatterns = oef_handlers.DefaultAPIPathPatterns

	log.Printf("OEF is listening to port %s...", conf.Port)
	if err := http.ListenAndServe(":"+conf.Port, handlers.LoggingHandler(os.Stdout, oef_handlers.NewHandlers(
		conf,
		renderer,
		db,
		orm.Models,
	).Router)); err != nil {
		panic(err)
	}

}