initialize paraclub-ai-mailer project with core components and configuration

internal/fetcher/fetcher.go

@@ -0,0 +1,48 @@
+package fetcher
+
+import (
+	"io"
+	"net/http"
+	"time"
+)
+
+type Fetcher struct {
+	client *http.Client
+}
+
+func New() *Fetcher {
+	return &Fetcher{
+		client: &http.Client{
+			Timeout: 30 * time.Second,
+		},
+	}
+}
+
+func (f *Fetcher) FetchContent(url string) (string, error) {
+	resp, err := f.client.Get(url)
+	if err != nil {
+		return "", err
+	}
+	defer resp.Body.Close()
+
+	body, err := io.ReadAll(resp.Body)
+	if err != nil {
+		return "", err
+	}
+
+	return string(body), nil
+}
+
+func (f *Fetcher) FetchAllURLs(urls []string) (map[string]string, error) {
+	results := make(map[string]string)
+
+	for _, url := range urls {
+		content, err := f.FetchContent(url)
+		if err != nil {
+			return nil, err
+		}
+		results[url] = content
+	}
+
+	return results, nil
+}