From 0197d9cd493b5785bca05f476856540ec64da64a Mon Sep 17 00:00:00 2001
From: Brian Picciano <mediocregopher@gmail.com>
Date: Sat, 7 Aug 2021 20:38:37 -0600
Subject: split configuration parsing out into separate packages, split api out
 as well

---
 srv/api/mailinglist.go | 87 ++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 87 insertions(+)
 create mode 100644 srv/api/mailinglist.go

(limited to 'srv/api/mailinglist.go')

diff --git a/srv/api/mailinglist.go b/srv/api/mailinglist.go
new file mode 100644
index 0000000..2ddfbe6
--- /dev/null
+++ b/srv/api/mailinglist.go
@@ -0,0 +1,87 @@
+package api
+
+import (
+	"errors"
+	"net/http"
+	"strings"
+
+	"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 {
+			badRequest(rw, r, errors.New("invalid email"))
+			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 {
+			internalServerError(rw, r, err)
+			return
+		}
+
+		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 {
+			badRequest(rw, r, errInvalidSubToken)
+			return
+		}
+
+		err := a.params.MailingList.FinalizeSubscription(subToken)
+
+		if errors.Is(err, mailinglist.ErrNotFound) {
+			badRequest(rw, r, errInvalidSubToken)
+			return
+
+		} else if errors.Is(err, mailinglist.ErrAlreadyVerified) {
+			// no problem
+
+		} else if err != nil {
+			internalServerError(rw, r, err)
+			return
+		}
+
+		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 {
+			badRequest(rw, r, errInvalidUnsubToken)
+			return
+		}
+
+		err := a.params.MailingList.Unsubscribe(unsubToken)
+
+		if errors.Is(err, mailinglist.ErrNotFound) {
+			badRequest(rw, r, errInvalidUnsubToken)
+			return
+
+		} else if err != nil {
+			internalServerError(rw, r, err)
+			return
+		}
+
+		jsonResult(rw, r, struct{}{})
+	})
+}
-- 
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