package main


import (
	lib "com.navi.medici.janus/lib"
	config "com.navi.medici.janus/config"
	server "com.navi.medici.janus/server"
	producer_module "com.navi.medici.janus/producer"

	"fmt"
	"log"
	"strings"
	"github.com/spf13/viper"
)

var (
	port         string
)


func init() {

	viper.SetConfigName("config")
	viper.AddConfigPath("./config")
	viper.SetConfigType("yml")
	viper.AutomaticEnv()

	var configuration config.Configurations
	if err := viper.ReadInConfig(); err != nil {
		fmt.Printf("Error reading config file, %s", err)
	}

	err := viper.Unmarshal(&configuration)
	if err != nil {
		fmt.Printf("Unable to decode into struct, %v", err)
	}

	configuration.Kafka.Bootstrap_Servers = viper.GetString(configuration.Kafka.Bootstrap_Servers)
	configuration.Kafka.Sasl_User = viper.GetString(configuration.Kafka.Sasl_User)
	configuration.Kafka.Sasl_Password = viper.GetString(configuration.Kafka.Sasl_Password)
	configuration.SchemaRegistry.Endpoint = viper.GetString(configuration.SchemaRegistry.Endpoint)
	configuration.SchemaRegistry.Topics = viper.GetString(configuration.SchemaRegistry.Topics)
	configuration.Server.Kafka_Topic = viper.GetString(configuration.Server.Kafka_Topic)

	port = configuration.Server.Port
	log.Printf("PORT IS: ", port)
	log.Printf(configuration.Kafka.Bootstrap_Servers)
	log.Printf(configuration.Kafka.Sasl_User)
	log.Printf(configuration.Kafka.Sasl_Password)
	log.Printf(configuration.SchemaRegistry.Endpoint)

	producer_module.GetSchemaVersions(configuration.SchemaRegistry.Endpoint, strings.Split(configuration.SchemaRegistry.Topics, ","))
	producer_module.InitializeProducers(configuration.Kafka)

	// TO DO: read number of goroutines from config
	for i := 0; i < configuration.Server.Goroutines; i++ {
		go lib.ProcessRequestChannel(configuration.Server.Kafka_Topic)
	}

	// sync producer using sarama
	// sync_producer := producer_module.GetSyncProducer(configuration.Kafka)
	// log.Println(sync_producer)
	// producer_module.KafkaWriter(sync_producer, topic, messageToSendBytes)
	// sync_producer.Close()

	// async producer using sarama
	// async_producer := producer_module.GetAsyncProducer(configuration.Kafka)
	// log.Println(async_producer)
	// producer_module.KafkaWriter(async_producer)
	// async_producer.Close()


}

func main() {

	log.Printf("Serving on http://0.0.0.0:", port)
	httpServer, err := server.NewServer(port)
	if err != nil {
		log.Fatalln("Unable to start server, ", err)
	}
	httpServer.HttpServer.Serve(httpServer.Listener)

}