package handler

import (
	"context"
	"crypto/rand"
	"encoding/base64"

	"git.coopgo.io/coopgo-apps/silvermobi/models"
	gomail "gopkg.in/mail.v2"
)

func generateRandomPassword(length int) (string, error) {
	buffer := make([]byte, length)
	_, err := rand.Read(buffer)
	if err != nil {
		return "", err
	}
	password := base64.StdEncoding.EncodeToString(buffer)[:length]
	return password, nil
}

func (h *SilverMobiHandler) ForgetAccount(ctx context.Context, username string, namespace string) (response bool,
	accessCode string) {

	var (
		err     error
		account *models.Account
	)

	account, err = h.Services.MobilityAccounts.GetAccountUsername(ctx, username, namespace)

	if err != nil {
		return false, ""
	}

	message := []byte("Hello dear,\nYour new Silvermobi password is: ")

	password, _ := generateRandomPassword(10)

	if update := h.Services.MobilityAccounts.UpdatePassword(ctx, account.ID, password); !update {
		return false, ""
	}

	m := gomail.NewMessage()
	m.SetHeader("From", h.Config.GetString("emailing.smtp.username"))
	m.SetHeader("To", username)
	m.SetHeader("Subject", "Silvermobi Password Recovery")

	message = append(message, []byte(password)...)

	m.SetBody("text/plain", string(message))

	d := gomail.NewDialer(
		h.Config.GetString("emailing.smtp.host"),
		h.Config.GetInt("emailing.smtp.port"),
		h.Config.GetString("emailing.smtp.username"),
		h.Config.GetString("emailing.smtp.password"),
	)

	d.StartTLSPolicy = gomail.MandatoryStartTLS

	if err = d.DialAndSend(m); err != nil {
		return false, ""
	}

	return true, password

}