package cmd

import (
	"encoding/json"
	"fmt"
	"io/ioutil"
	"log"
	"net/http"
	"time"

	"git.agecem.com/agecem/bottin-agenda/data"
	"github.com/spf13/cobra"
	"github.com/spf13/viper"
)

var (
	protocol, host, username, password string
	port                               int
	check                              bool
)

// scanCmd represents the scan command
var scanCmd = &cobra.Command{
	Use:   "scan",
	Short: "Check a bottin instance for existing membre",
	Run: func(cmd *cobra.Command, args []string) {
		args_length := len(args)

		if args_length != 1 {
			log.Fatalf("[e] Wrong number of arguments, got '%d' needs 1", args_length)
		} else {

			// Search locally for corresponding Membre
			membre, err := readMembre(args[0])
			if err != nil {
				log.Printf("[e] %s", err)
			}

			membre_exists := (membre.ID != 0)

			if membre_exists {
				log.Fatal("[e] Membre is already in the bottin-agenda database")
			} else {
				log.Println("[i] Membre not already in bottin-agenda, confirming existence with bottin")

				// Search in bottin for corresponding Membre
				membre_bottin, err := readMembreBottin(args[0])
				if err != nil {
					log.Fatalf("[e] %s", err)
				}

				membre_bottin_exists := (membre_bottin.ID != 0)

				if membre_bottin_exists {

					log.Println("[ok] Membre found in bottin")

					if !check {
						log.Println("[i] Adding to bottin-agenda")

						membre_bottin.CreatedAt = time.Now()
						membre_bottin.UpdatedAt = time.Now()

						// Add to bottin-agenda database
						data.InsertMembre(&membre_bottin)
					} else {
						log.Fatal("[i] Skipping insert because of --check flag")
					}
				} else {
					log.Fatal("[e] Membre does not exist in bottin database")
				}
			}
		}
	},
}

func init() {
	rootCmd.AddCommand(scanCmd)

	// check
	scanCmd.PersistentFlags().BoolVar(
		&check, "check", false,
		"Do not write anything to database.")
}

func updateFlagsBottin() {
	protocol = viper.GetString("bottin.protocol")
	host = viper.GetString("bottin.host")
	port = viper.GetInt("bottin.port")
	username = viper.GetString("bottin.username")
	password = viper.GetString("bottin.password")
}

func readMembre(num_etud string) (data.Membre, error) {
	data.OpenDatabase()
	data.MigrateDatabase()

	membre, err := data.ReadMembre(num_etud)
	if err != nil {
		return membre, err
	}

	return membre, nil
}

func readMembreBottin(num_etud string) (data.Membre, error) {
	updateFlagsBottin()

	membre := data.Membre{}

	request := fmt.Sprintf("%s://%s:%s@%s:%d/v1/membre/%s", protocol, username, password, host, port, num_etud)

	response, err := http.Get(request)
	if err != nil {
		return membre, err
	}

	defer response.Body.Close()

	body, err := ioutil.ReadAll(response.Body)
	if err != nil {
		return membre, err
	}

	err = json.Unmarshal([]byte(body), &membre)
	if err != nil {
		return membre, err
	}

	return membre, nil
}