api: Add go files

I know this is a huge commit, but I can't be bothered to check
this in part by part.

api/utils_sanitise.go

@@ -0,0 +1,35 @@
+package main
+
+import (
+	"regexp"
+)
+
+var prePlusMatch = regexp.MustCompile(`([^@\+]*)\+?(.*)@.*`)
+var periodsMatch = regexp.MustCompile(`[\.]`)
+var postAtMatch = regexp.MustCompile(`[^@]*(@.*)`)
+
+func stripEmail(email string) string {
+	postAt := postAtMatch.ReplaceAllString(email, `$1`)
+	prePlus := prePlusMatch.ReplaceAllString(email, `$1`)
+	strippedEmail := periodsMatch.ReplaceAllString(prePlus, ``) + postAt
+
+	return strippedEmail
+}
+
+var https = regexp.MustCompile(`(https?://)`)
+var trailingSlash = regexp.MustCompile(`(/*$)`)
+
+func stripDomain(domain string) string {
+	noSlash := trailingSlash.ReplaceAllString(domain, ``)
+	noProtocol := https.ReplaceAllString(noSlash, ``)
+
+	return noProtocol
+}
+
+var path = regexp.MustCompile(`(https?://[^/]*)`)
+
+func stripPath(url string) string {
+	strippedPath := path.ReplaceAllString(url, ``)
+
+	return strippedPath
+}