feat:gemini file

common/file/file.go

@@ -0,0 +1,23 @@
+package file
+
+import (
+	"bytes"
+	"encoding/base64"
+	"net/http"
+)
+
+func GetFileFromUrl(url string) (mimeType string, data string, err error) {
+	resp, err := http.Get(url)
+	if err != nil {
+		return
+	}
+	defer resp.Body.Close()
+	buffer := bytes.NewBuffer(nil)
+	_, err = buffer.ReadFrom(resp.Body)
+	if err != nil {
+		return
+	}
+	mimeType = resp.Header.Get("Content-Type")
+	data = base64.StdEncoding.EncodeToString(buffer.Bytes())
+	return
+}