package cmd

import (
	"fmt"
	"log"
	"net/url"
	"time"

	"github.com/mono83/slf/wd"
	"github.com/spf13/cobra"
	"github.com/spf13/viper"

	"github.com/elyby/chrly/auth"
	"github.com/elyby/chrly/bootstrap"
	"github.com/elyby/chrly/db"
	"github.com/elyby/chrly/http"
	"github.com/elyby/chrly/mojangtextures"
)

var serveCmd = &cobra.Command{
	Use:   "serve",
	Short: "Starts http handler for the skins system",
	Run: func(cmd *cobra.Command, args []string) {
		// TODO: this is a mess, need to organize this code somehow to make services initialization more compact
		logger, err := bootstrap.CreateLogger(viper.GetString("statsd.addr"), viper.GetString("sentry.dsn"))
		if err != nil {
			log.Fatal(fmt.Printf("Cannot initialize logger: %v", err))
		}
		logger.Info("Logger successfully initialized")

		storageFactory := db.StorageFactory{Config: viper.GetViper()}

		logger.Info("Initializing skins repository")
		redisFactory := storageFactory.CreateFactory("redis")
		skinsRepo, err := redisFactory.CreateSkinsRepository()
		if err != nil {
			logger.Emergency(fmt.Sprintf("Error on creating skins repo: %+v", err))
			return
		}
		logger.Info("Skins repository successfully initialized")

		logger.Info("Initializing capes repository")
		filesystemFactory := storageFactory.CreateFactory("filesystem")
		capesRepo, err := filesystemFactory.CreateCapesRepository()
		if err != nil {
			logger.Emergency(fmt.Sprintf("Error on creating capes repo: %v", err))
			return
		}
		logger.Info("Capes repository successfully initialized")

		logger.Info("Preparing Mojang's textures queue")
		mojangUuidsRepository, err := redisFactory.CreateMojangUuidsRepository()
		if err != nil {
			logger.Emergency(fmt.Sprintf("Error on creating mojang uuids repo: %v", err))
			return
		}

		var uuidsProvider mojangtextures.UuidsProvider
		preferredUuidsProvider := viper.GetString("mojang_textures.uuids_provider.driver")
		if preferredUuidsProvider == "remote" {
			remoteUrl, err := url.Parse(viper.GetString("mojang_textures.uuids_provider.url"))
			if err != nil {
				logger.Emergency("Unable to parse remote url :err", wd.ErrParam(err))
				return
			}

			uuidsProvider = &mojangtextures.RemoteApiUuidsProvider{
				Url:    *remoteUrl,
				Logger: logger,
			}
		} else {
			uuidsProvider = &mojangtextures.BatchUuidsProvider{
				IterationDelay: time.Duration(viper.GetInt("queue.loop_delay")) * time.Millisecond,
				IterationSize:  viper.GetInt("queue.batch_size"),
				Logger:         logger,
			}
		}

		texturesStorage := mojangtextures.NewInMemoryTexturesStorage()
		texturesStorage.Start()
		mojangTexturesProvider := &mojangtextures.Provider{
			Logger:        logger,
			UuidsProvider: uuidsProvider,
			TexturesProvider: &mojangtextures.MojangApiTexturesProvider{
				Logger: logger,
			},
			Storage: &mojangtextures.SeparatedStorage{
				UuidsStorage:    mojangUuidsRepository,
				TexturesStorage: texturesStorage,
			},
		}
		logger.Info("Mojang's textures queue is successfully initialized")

		cfg := &http.Skinsystem{
			ListenSpec:             fmt.Sprintf("%s:%d", viper.GetString("server.host"), viper.GetInt("server.port")),
			SkinsRepo:              skinsRepo,
			CapesRepo:              capesRepo,
			MojangTexturesProvider: mojangTexturesProvider,
			Logger:                 logger,
			Auth:                   &auth.JwtAuth{Key: []byte(viper.GetString("chrly.secret"))},
		}

		if err := cfg.Run(); err != nil {
			logger.Error(fmt.Sprintf("Error in main(): %v", err))
		}
	},
}

func init() {
	RootCmd.AddCommand(serveCmd)
	viper.SetDefault("server.host", "")
	viper.SetDefault("server.port", 80)
	viper.SetDefault("storage.redis.host", "localhost")
	viper.SetDefault("storage.redis.port", 6379)
	viper.SetDefault("storage.redis.poll", 10)
	viper.SetDefault("storage.filesystem.basePath", "data")
	viper.SetDefault("storage.filesystem.capesDirName", "capes")
	viper.SetDefault("queue.loop_delay", 2_500)
	viper.SetDefault("queue.batch_size", 10)
}