added bare setup for notifier

Got 582 offers. Filtered offers: 3
           ID|     Ram|             HDD|                           CPU|    Price|   Score|  Reduce time|Specials
  SB57-931121|  128 GB|  2x 2 TB (4096)|  Intel Xeon E5-1650V2 (12518)|  57.00 €|  103.12|      40h 16m|ECC, Ent. HDD, iNIC
  SB69-927780|  128 GB|  2x 2 TB (4096)|  Intel Xeon E5-1650V3 (13335)|  69.00 €|   89.92|      36h 02m|ECC, Ent. HDD, iNIC
  SB74-910394|  128 GB|  3x 2 TB (6144)|  Intel Xeon E5-1650V2 (12518)|  74.00 €|   84.96|      23h 00m|ECC, Ent. HDD, iNIC

main.go

@@ -6,6 +6,7 @@ import (
 	"github.com/mrahbar/my-bloody-hetzner-sb-notifier/client"
 	c "github.com/mrahbar/my-bloody-hetzner-sb-notifier/crawler"
 	"github.com/mrahbar/my-bloody-hetzner-sb-notifier/hetzner"
+	n "github.com/mrahbar/my-bloody-hetzner-sb-notifier/notifier"
 )
 
 var (
@@ -64,6 +65,24 @@ var (
 		"set max benchmark",
 	)
 
+	notifierSender = flag.String(
+		"notifier-sender",
+		"",
+		"set notifier sender",
+	)
+
+	notifierPassword = flag.String(
+		"notifier-password",
+		"",
+		"set notifier password",
+	)
+
+	notifierRecipient = flag.String(
+		"notifier-recipient",
+		"",
+		"set notifier recipient",
+	)
+
 	alertOnScore = flag.Int(
 		"alert-on-score",
 		0,
@@ -86,6 +105,9 @@ func main() {
 
 		fmt.Printf("Got %d offers. Filtered offers: %d\n", len(offers.Server), len(servers))
 		crawler.Print(servers)
+
+		notifier := n.NewNotifier(*notifierRecipient, *notifierSender, *notifierPassword)
+		notifier.Act(servers)
 	} else {
 		fmt.Println("Got no offers.")
 	}

notifier/notifier.go

@@ -1 +1,95 @@
 package notifier
+
+import (
+	"bytes"
+	"fmt"
+	"github.com/mrahbar/my-bloody-hetzner-sb-notifier/hetzner"
+	"mime/quotedprintable"
+	"net/smtp"
+	"strings"
+)
+
+const (
+	gmailSmtpServer = "smtp.gmail.com"
+	contentTypeHtml = "text/html"
+	contentTypePlain = "text/plain"
+)
+
+type Notifier struct {
+	to string
+	contentType string
+	user     string
+	password string
+	server   string
+	port     int
+	history map[string]float64
+}
+
+func NewNotifier(Recipient, Username, Password string) Notifier {
+	notifier := Notifier{
+		Recipient,
+		contentTypePlain,
+		Username,
+		Password,
+		gmailSmtpServer,
+		587,
+		make(map[string]float64),
+	}
+	return notifier
+}
+
+func (n Notifier) Act(servers []hetzner.Server) {
+	//absentFromHistory := false
+	//
+	//for _, s := range servers {
+	//	// TODO check if server in history, if a single server is missing send email and store state
+	//}
+}
+
+func (n Notifier) sendMail(Dest []string, Subject, bodyMessage string) {
+
+	msg := "From: " + n.user + "\n" +
+		"To: " + strings.Join(Dest, ",") + "\n" +
+		"Subject: " + Subject + "\n" + bodyMessage
+
+	err := smtp.SendMail(fmt.Sprintf("%s:%d", n.server, n.port),
+		smtp.PlainAuth("", n.user, n.password, n.server),
+		n.user, Dest, []byte(msg))
+
+	if err != nil {
+
+		fmt.Printf("smtp error: %s", err)
+		return
+	}
+
+	fmt.Println("Mail sent successfully!")
+}
+
+func (n Notifier) writeEmail(subject, bodyMessage string) string {
+
+	header := make(map[string]string)
+	header["From"] = n.user
+
+	header["To"] = n.to
+	header["Subject"] = subject
+	header["MIME-Version"] = "1.0"
+	header["Content-Type"] = fmt.Sprintf("%s; charset=\"utf-8\"", n.contentType)
+	header["Content-Transfer-Encoding"] = "quoted-printable"
+	header["Content-Disposition"] = "inline"
+
+	message := ""
+
+	for key, value := range header {
+		message += fmt.Sprintf("%s: %s\r\n", key, value)
+	}
+
+	var encodedMessage bytes.Buffer
+
+	finalMessage := quotedprintable.NewWriter(&encodedMessage)
+	finalMessage.Write([]byte(bodyMessage))
+	finalMessage.Close()
+
+	message += "\r\n" + encodedMessage.String()
+
+	return message
+}