From 988df8e729b9cdde796a71e970ef33165ad16cd7 Mon Sep 17 00:00:00 2001
From: jojo <perebaj@gmail.com>
Date: Sun, 21 Jan 2024 15:19:50 -0300
Subject: [PATCH] :sparkles: mail feature

---
 mail.go        | 31 +++++++++++++++++++++++++++++++
 mail_test.go   |  1 +
 scrape_test.go | 18 +++++-------------
 3 files changed, 37 insertions(+), 13 deletions(-)
 create mode 100644 mail.go
 create mode 100644 mail_test.go

diff --git a/mail.go b/mail.go
new file mode 100644
index 0000000..630d3f1
--- /dev/null
+++ b/mail.go
@@ -0,0 +1,31 @@
+package newsletter
+
+import (
+	"fmt"
+	"net/smtp"
+)
+
+// EmailConfig contains the necessary information to authenticate in the SMTP server
+type EmailConfig struct {
+	Password string
+	UserName string
+}
+
+// SMTPServer is the SMTP server of gmail
+const SMTPServer = "smtp.gmail.com"
+
+// Send sends an email to the given destination
+func Send(dest []string, bodyMessage string, cfg EmailConfig) error {
+	auth := smtp.PlainAuth("", cfg.UserName, cfg.Password, SMTPServer)
+
+	msg := []byte("To: " + dest[0] + "\r\n" +
+		"Subject: Newsletter\r\n" +
+		"\r\n" +
+		bodyMessage + "\r\n")
+
+	err := smtp.SendMail(SMTPServer+":587", auth, cfg.UserName, dest, []byte(msg))
+	if err != nil {
+		return fmt.Errorf("error sending email: %v", err)
+	}
+	return nil
+}
diff --git a/mail_test.go b/mail_test.go
new file mode 100644
index 0000000..68615a8
--- /dev/null
+++ b/mail_test.go
@@ -0,0 +1 @@
+package newsletter
diff --git a/scrape_test.go b/scrape_test.go
index 16278d4..a40dc3b 100644
--- a/scrape_test.go
+++ b/scrape_test.go
@@ -79,7 +79,7 @@ func TestCrawlerRun(t *testing.T) {
 	}
 }
 
-func TestGetReferences(t *testing.T) {
+func TestFetch(t *testing.T) {
 	wantBody := "Hello, World!"
 	server := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
 		w.WriteHeader(http.StatusOK)
@@ -99,7 +99,7 @@ func TestGetReferences(t *testing.T) {
 	}
 }
 
-func TestGetReferences_Status500(t *testing.T) {
+func TestFetch_Status500(t *testing.T) {
 	server := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
 		w.WriteHeader(http.StatusInternalServerError)
 	}))
@@ -116,21 +116,13 @@ func TestGetReferences_Status500(t *testing.T) {
 	}
 }
 
-type StorageMockImpl struct {
-}
-
-func NewStorageMock() StorageMockImpl {
-	return StorageMockImpl{}
-}
-
-func (s StorageMockImpl) SavePage(_ context.Context, _ []mongodb.Page) error {
-	return nil
-}
+type StorageMockImpl struct{}
 
+func NewStorageMock() StorageMockImpl                                        { return StorageMockImpl{} }
+func (s StorageMockImpl) SavePage(_ context.Context, _ []mongodb.Page) error { return nil }
 func (s StorageMockImpl) DistinctEngineerURLs(_ context.Context) ([]interface{}, error) {
 	return []interface{}{fakeURL}, nil
 }
-
 func (s StorageMockImpl) Page(_ context.Context, _ string) ([]mongodb.Page, error) {
 	return []mongodb.Page{}, nil
 }