Split up main package into multiple files

download.go

@@ -0,0 +1,38 @@
+package main
+
+import (
+	"fmt"
+	"io"
+	"net/http"
+	"os"
+	"path"
+	"path/filepath"
+)
+
+func download(
+	gitdir string,
+	url string,
+) (string, error) {
+	res, err := http.Get(url + "/export/txt")
+	if err != nil {
+		return "", fmt.Errorf("Failed to get pad at %s: %w", url, err)
+	}
+
+	defer res.Body.Close()
+
+	padfile := path.Base(url) + ".txt"
+
+	padpath := filepath.Join(gitdir, padfile)
+	out, err := os.Create(padpath)
+
+	written, err := io.Copy(out, res.Body)
+	if err != nil {
+		return "", fmt.Errorf("Failed to write pad to file at %s: %w", padfile, err)
+	}
+
+	if written < 100 {
+		return "", fmt.Errorf("Skipping update of %s, because pad has likely been removed from %s", padfile, url)
+	}
+
+	return padfile, nil
+}