inital commit

Author: codepumper

.github/workflow/deploy.yml

@@ -0,0 +1,36 @@
+name: Deploy to DigitalOcean Functions
+
+on:
+  push:
+    branches:
+      - main
+
+jobs:
+  deploy:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Checkout code
+      uses: actions/checkout@v2
+
+    - name: Set up Go
+      uses: actions/setup-go@v2
+      with:
+        go-version: '1.20'
+
+    - name: Build Go function
+      run: go build -o main ./sendTransactionalEmail/main
+
+    - name: Login to DigitalOcean
+      uses: digitalocean/action-doctl@v2
+      with:
+        token: ${{ secrets.DIGITALOCEAN_ACCESS_TOKEN }}
+
+    - name: Deploy function
+      run: |
+        doctl functions deploy your-function-name \
+          --entrypoint ./main \
+          --runtime go1.20 \
+          --region your-region \
+          --source .
+

sendTransactionalEmail/go.mod

@@ -0,0 +1,5 @@
+module github.com/codepumper/functions/sendTransactionalEmail
+
+go 1.22.3
+
+require github.com/resend/resend-go/v2 v2.6.0 // indirect

sendTransactionalEmail/go.sum

@@ -0,0 +1,2 @@
+github.com/resend/resend-go/v2 v2.6.0 h1:bHwF79iCYC3V9H7/DL0MAIoz0hiAqM+Rq9G4EhgooyE=
+github.com/resend/resend-go/v2 v2.6.0/go.mod h1:ihnxc7wPpSgans8RV8d8dIF4hYWVsqMK5KxXAr9LIos=

sendTransactionalEmail/main.go

@@ -0,0 +1,79 @@
+package main
+
+import (
+    "fmt"
+    "math"
+    "time"
+	"context"
+
+    "github.com/resend/resend-go/v2"
+)
+
+type Request struct {
+	Name string `json:"name"`
+}
+
+type Response struct {
+	StatusCode int               `json:"statusCode,omitempty"`
+	Headers    map[string]string `json:"headers,omitempty"`
+	Body       string            `json:"body,omitempty"`
+}
+
+func Main(ctx context.Context, event Event) (*Response, error) {
+    apiKey := os.Getenv("RESEND_API_KEY")
+    if apiKey == "" {
+        fmt.Println("RESEND_API_KEY environment variable is not set")
+        return
+    }
+
+	emailAddress := os.Getenv("EMAIL_ADDRESS")
+    if apiKey == "" {
+        fmt.Println("EMAIL_ADDRESS environment variable is not set")
+        return
+    }
+
+    client := resend.NewClient(apiKey)
+
+    params := &resend.SendEmailRequest{
+        From:    "Acme <[email protected]>",
+        To:      []string{emailAddress},
+        Html:    "<strong>hello world</strong>",
+        Subject: "Hello from Golang",
+    }
+
+    maxRetries := 5
+    sent, err := sendEmailWithRetry(client, params, maxRetries)
+    if err != nil {
+        fmt.Println(err.Error())
+        return
+    }
+
+    fmt.Println("Email sent successfully, ID:", sent.Id)
+
+	return &Response{
+		Body: fmt.Sprintf("Hello from you function!"),
+	}, nil
+}
+
+
+func sendEmailWithRetry(client *resend.Client, params *resend.SendEmailRequest, maxRetries int) (*resend.SendEmailResponse, error) {
+    var sent *resend.SendEmailResponse
+    var err error
+
+    for i := 0; i < maxRetries; i++ {
+        sent, err = client.Emails.Send(params)
+        if err == nil {
+            return sent, nil
+        }
+
+        // Print the error
+        fmt.Println("Attempt", i+1, "failed:", err.Error())
+
+        // Exponential backoff delay
+        delay := time.Duration(math.Pow(2, float64(i))) * time.Second
+        fmt.Printf("Retrying in %v seconds...\n", delay.Seconds())
+        time.Sleep(delay)
+    }
+
+    return nil, fmt.Errorf("failed to send email after %d attempts: %w", maxRetries, err)
+}