added email functionality

quickstart.go

@@ -1,10 +1,59 @@
 package main
 
-import "fmt"
+import (
+	"context"
+	"encoding/base64"
+	"io/ioutil"
+	"log"
+	"strings"
+
+	"golang.org/x/oauth2/google"
+	"google.golang.org/api/gmail/v1"
+	"google.golang.org/api/option"
+)
+
+func sendmail(srv gmail.Service, frommail string) {
+	temp := []byte("From: 'me'\r\n" +
+		"reply-to: blobcorpciso@gmail.com\r\n" +
+		"To:  blobcorpciso@gmail.com\r\n" +
+		"Subject: Feed Spot \r\n" +
+		"remember to feed spot")
+
+	var message gmail.Message
+
+	message.Raw = base64.StdEncoding.EncodeToString(temp)
+	message.Raw = strings.Replace(message.Raw, "/", "_", -1)
+	message.Raw = strings.Replace(message.Raw, "+", "-", -1)
+	message.Raw = strings.Replace(message.Raw, "=", "", -1)
+	_, err := srv.Users.Messages.Send("me", &message).Do()
+	if err != nil {
+		log.Fatalf("Unable to send. %v", err)
+	}
+}
 
 func main() {
+	ctx := context.Background()
+	b, err := ioutil.ReadFile("credentials.json")
+	if err != nil {
+		log.Fatalf("Unable to read client secret file: %v", err)
+	}
+
+	// If modifying these scopes, delete your previously saved token.json.
+	config, err := google.ConfigFromJSON(b, gmail.MailGoogleComScope)
+	if err != nil {
+		log.Fatalf("Unable to parse client secret file to config: %v", err)
+	}
+	client := getClient(config)
+
+	srv, err := gmail.NewService(ctx, option.WithHTTPClient(client))
+	if err != nil {
+		log.Fatalf("Unable to retrieve Gmail client: %v", err)
+	}
+
+	user := "me"
+
 	c := cron.New()
-	c.AddFunc("0 3 * * * *", func() { fmt.Println("Feed spot") })
+	c.AddFunc("0 3 * * * *", func() sendmail(*srv)})
 	c.Start()
 	for {
 	}