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| // Define types
type EmailBody struct {
Personalizations []EmailPersonalization `json:"personalizations"`
From EmailIdentifier `json:"from"`
Subject string `json:"subject"`
Content []EmailContent `json:"content"`
}
type EmailPersonalization struct {
To []EmailIdentifier `json:"to"`
Substitutions map[string]string `json:"substitutions"`
}
type EmailIdentifier struct {
Email string `json:"email"`
Name string `json:"name"`
}
type EmailContent struct {
Type string `json:"type"`
Value string `json:"value"`
}
// Send an email
emailBody := &EmailBody{
Personalizations: []EmailPersonalization{
{
To: []EmailIdentifier{
{
Email: "tom@example.com",
Name: "Tom",
},
},
Substitutions: map[string]string{
"-name-": "Tom",
},
},
{
To: []EmailIdentifier{
{
Email: "sean@example.com",
Name: "Sean",
},
},
Substitutions: map[string]string{
"-name-": "Sean",
},
},
},
From: EmailIdentifier{
Email: "no-reply@awesomegame.com",
Name: "Awesome Game",
},
Subject: "Login now to receive your Daily Login Reward!",
Content: []EmailContent{
{
Type: "text/html",
Value: `<p>
Hello, -name-!<br />
Login to Awesome Game now to receive your Daily Login Reward of 1000 Awesome Coins!
</p>`,
},
},
}
jsonBody, err := json.Marshal(emailBody)
if err != nil {
logger.Error("error marshaling email body", err)
return err
}
request, err := http.NewRequest("post", "https://api.sendgrid.com/v3/mail/send", bytes.NewBuffer(jsonBody))
request.Header.Set("Content-Type", "application/json")
request.Header.Set("Authorization", "Bearer <YourSendgridApiKey>")
client := &http.Client{}
response, err := client.Do(request)
defer response.Body.Close()
if err != nil {
logger.Error("error making HTTP post", err)
return err
}
if response.StatusCode != 202 {
logger.Warn("failed to send email", err)
} else {
logger.Info("successfully sent email")
}
|
