1 files changed, 92 insertions, 0 deletions
diff --git a/src/http/mailinglist.go b/src/http/mailinglist.go
new file mode 100644
index 0000000..eab2f51
--- /dev/null
+++ b/src/http/mailinglist.go
@@ -0,0 +1,92 @@
+package http
+
+import (
+	"errors"
+	"net/http"
+	"strings"
+
+	"github.com/mediocregopher/blog.mediocregopher.com/srv/http/apiutil"
+	"github.com/mediocregopher/blog.mediocregopher.com/srv/mailinglist"
+)
+
+func (a *api) mailingListSubscribeHandler() http.Handler {
+	return http.HandlerFunc(func(rw http.ResponseWriter, r *http.Request) {
+		email := r.PostFormValue("email")
+		if parts := strings.Split(email, "@"); len(parts) != 2 ||
+			parts[0] == "" ||
+			parts[1] == "" ||
+			len(email) >= 512 {
+			apiutil.BadRequest(rw, r, errors.New("invalid email"))
+			return
+
+		} else if strings.ToLower(parts[1]) == "gmail.com" {
+			apiutil.BadRequest(rw, r, errors.New("gmail does not allow its users to receive email from me, sorry"))
+			return
+		}
+
+		err := a.params.MailingList.BeginSubscription(email)
+
+		if errors.Is(err, mailinglist.ErrAlreadyVerified) {
+			// just eat the error, make it look to the user like the
+			// verification email was sent.
+		} else if err != nil {
+			apiutil.InternalServerError(rw, r, err)
+			return
+		}
+
+		apiutil.JSONResult(rw, r, struct{}{})
+	})
+}
+
+func (a *api) mailingListFinalizeHandler() http.Handler {
+	var errInvalidSubToken = errors.New("invalid subToken")
+
+	return http.HandlerFunc(func(rw http.ResponseWriter, r *http.Request) {
+		subToken := r.PostFormValue("subToken")
+		if l := len(subToken); l == 0 || l > 128 {
+			apiutil.BadRequest(rw, r, errInvalidSubToken)
+			return
+		}
+
+		err := a.params.MailingList.FinalizeSubscription(subToken)
+
+		if errors.Is(err, mailinglist.ErrNotFound) {
+			apiutil.BadRequest(rw, r, errInvalidSubToken)
+			return
+
+		} else if errors.Is(err, mailinglist.ErrAlreadyVerified) {
+			// no problem
+
+		} else if err != nil {
+			apiutil.InternalServerError(rw, r, err)
+			return
+		}
+
+		apiutil.JSONResult(rw, r, struct{}{})
+	})
+}
+
+func (a *api) mailingListUnsubscribeHandler() http.Handler {
+	var errInvalidUnsubToken = errors.New("invalid unsubToken")
+
+	return http.HandlerFunc(func(rw http.ResponseWriter, r *http.Request) {
+		unsubToken := r.PostFormValue("unsubToken")
+		if l := len(unsubToken); l == 0 || l > 128 {
+			apiutil.BadRequest(rw, r, errInvalidUnsubToken)
+			return
+		}
+
+		err := a.params.MailingList.Unsubscribe(unsubToken)
+
+		if errors.Is(err, mailinglist.ErrNotFound) {
+			apiutil.BadRequest(rw, r, errInvalidUnsubToken)
+			return
+
+		} else if err != nil {
+			apiutil.InternalServerError(rw, r, err)
+			return
+		}
+
+		apiutil.JSONResult(rw, r, struct{}{})
+	})
+}