everywhere: add email notifications

api/utils_html.go

@@ -0,0 +1,36 @@
+package main
+
+import (
+	"golang.org/x/net/html"
+	"net/http"
+)
+
+func htmlTitleRecurse(h *html.Node) string {
+	if h.Type == html.ElementNode && h.Data == "title" {
+		return h.FirstChild.Data
+	}
+
+	for c := h.FirstChild; c != nil; c = c.NextSibling {
+		res := htmlTitleRecurse(c)
+		if res != "" {
+			return res
+		}
+	}
+
+	return ""
+}
+
+func htmlTitleGet(url string) (string, error) {
+	resp, err := http.Get(url)
+	if err != nil {
+		return "", err
+	}
+	defer resp.Body.Close()
+
+	h, err := html.Parse(resp.Body)
+	if err != nil {
+		return "", err
+	}
+
+	return htmlTitleRecurse(h), nil
+}