package app

import (
	"fmt"
	"net/smtp"
	"os"
	"strconv"
)

type MailConfig struct {
	SMTPHost       string
	SMTPPort       int
	SMTPSenderName string
	AuthEmail      string
	AuthPassword   string
}

func Mail() *MailConfig {
	port, err := strconv.Atoi(os.Getenv("SMTP_PORT"))
	if err != nil {
		fmt.Println("error parsing to int", err.Error())
	}

	return &MailConfig{
		SMTPHost:       os.Getenv("SMTP_HOST"),
		SMTPPort:       port,
		SMTPSenderName: os.Getenv("SMTP_SENDER"),
		AuthEmail:      os.Getenv("AUTH_EMAIL"),
		AuthPassword:   os.Getenv("AUTH_PASSWORD"),
	}
}

func SendEmail(to []string, cc []string, name, subject, message, htmlString string) error {
	sender := "From: " + Mail().SMTPSenderName + "\n"
	subjectt := "Subject: " + subject + "\n"
	mime := "MIME-version: 1.0;\nContent-Type: text/html; charset=\"UTF-8\";\n\n"
	body := htmlString
	messages := []byte(sender + subjectt + mime + body)

	auth := smtp.PlainAuth("", Mail().AuthEmail, Mail().AuthPassword, Mail().SMTPHost)
	smtpAddr := fmt.Sprintf("%s:%d", Mail().SMTPHost, Mail().SMTPPort)

	err := smtp.SendMail(smtpAddr, auth, Mail().AuthEmail, append(to, cc...), messages)
	if err != nil {
		return err
	}

	return nil
}