From 4dc1683d3ec01eb5030fadab182631e7bbe448c0 Mon Sep 17 00:00:00 2001
From: Brian Picciano <mediocregopher@gmail.com>
Date: Sat, 21 May 2022 14:03:38 -0600
Subject: Serve mailing list finalize and unsubscribe endpoints

---
 srv/src/http/api.go                |  2 ++
 srv/src/http/tpl/finalize.html     | 45 ++++++++++++++++++++++++++++++++++++++
 srv/src/http/tpl/unsubscribe.html  | 44 +++++++++++++++++++++++++++++++++++++
 srv/src/mailinglist/mailinglist.go |  4 ++--
 4 files changed, 93 insertions(+), 2 deletions(-)
 create mode 100644 srv/src/http/tpl/finalize.html
 create mode 100644 srv/src/http/tpl/unsubscribe.html

(limited to 'srv/src')

diff --git a/srv/src/http/api.go b/srv/src/http/api.go
index 3cb4ba5..19a65d9 100644
--- a/srv/src/http/api.go
+++ b/srv/src/http/api.go
@@ -216,6 +216,8 @@ func (a *api) blogHandler() http.Handler {
 
 	mux.Handle("/static/", http.FileServer(http.FS(staticFS)))
 	mux.Handle("/follow", a.renderDumbTplHandler("follow.html"))
+	mux.Handle("/mailinglist/unsubscribe", a.renderDumbTplHandler("unsubscribe.html"))
+	mux.Handle("/mailinglist/finalize", a.renderDumbTplHandler("finalize.html"))
 	mux.Handle("/feed.xml", a.renderFeedHandler())
 	mux.Handle("/", a.renderIndexHandler())
 
diff --git a/srv/src/http/tpl/finalize.html b/srv/src/http/tpl/finalize.html
new file mode 100644
index 0000000..8bdfceb
--- /dev/null
+++ b/srv/src/http/tpl/finalize.html
@@ -0,0 +1,45 @@
+{{ define "body" }}
+
+<script async type="module" src="{{ StaticURL "api.js" }}"></script>
+
+<style>
+#result.success { color: green; }
+#result.fail { color: red; }
+</style>
+
+<span id="result"></span>
+
+<script>
+
+(async () => {
+
+    const resultSpan = document.getElementById("result");
+
+    try {
+
+        const urlParams = new URLSearchParams(window.location.search);
+        const subToken = urlParams.get('subToken');
+
+        if (!subToken) throw "No subscription token provided";
+
+        const api = await import("{{ StaticURL "api.js" }}");
+
+        await api.call('/api/mailinglist/finalize', {
+            body: { subToken },
+        });
+
+        resultSpan.className = "success";
+        resultSpan.innerHTML = "Your email subscription has been finalized! Please go on about your day.";
+
+    } catch (e) {
+        resultSpan.className = "fail";
+        resultSpan.innerHTML = e;
+    }
+
+})();
+
+</script>
+
+{{ end }}
+
+{{ template "base.html" . }}
diff --git a/srv/src/http/tpl/unsubscribe.html b/srv/src/http/tpl/unsubscribe.html
new file mode 100644
index 0000000..ad01735
--- /dev/null
+++ b/srv/src/http/tpl/unsubscribe.html
@@ -0,0 +1,44 @@
+{{ define "body" }}
+
+<script async type="module" src="{{ StaticURL "api.js" }}"></script>
+
+<style>
+#result.success { color: green; }
+#result.fail { color: red; }
+</style>
+
+<span id="result"></span>
+
+<script>
+
+(async () => {
+
+    const resultSpan = document.getElementById("result");
+
+    try {
+        const urlParams = new URLSearchParams(window.location.search);
+        const unsubToken = urlParams.get('unsubToken');
+
+        if (!unsubToken) throw "No unsubscribe token provided";
+
+        const api = await import("{{ StaticURL "api.js" }}");
+
+        await api.call('/api/mailinglist/unsubscribe', {
+            body: { unsubToken },
+        });
+
+        resultSpan.className = "success";
+        resultSpan.innerHTML = "You have been unsubscribed! Please go on about your day.";
+
+    } catch (e) {
+        resultSpan.className = "fail";
+        resultSpan.innerHTML = e;
+    }
+
+})();
+
+</script>
+
+{{ end }}
+
+{{ template "base.html" . }}
diff --git a/srv/src/mailinglist/mailinglist.go b/srv/src/mailinglist/mailinglist.go
index 28b44b0..d9bdcc0 100644
--- a/srv/src/mailinglist/mailinglist.go
+++ b/srv/src/mailinglist/mailinglist.go
@@ -126,7 +126,7 @@ func (m *mailingList) BeginSubscription(email string) error {
 		SubLink string
 	}{
 		SubLink: fmt.Sprintf(
-			"%s/mailinglist/finalize.html?subToken=%s",
+			"%s/mailinglist/finalize?subToken=%s",
 			m.params.PublicURL.String(),
 			emailRecord.SubToken,
 		),
@@ -242,7 +242,7 @@ func (m *mailingList) Publish(postTitle, postURL string) error {
 			PostTitle: postTitle,
 			PostURL:   postURL,
 			UnsubURL: fmt.Sprintf(
-				"%s/mailinglist/unsubscribe.html?unsubToken=%s",
+				"%s/mailinglist/unsubscribe?unsubToken=%s",
 				m.params.PublicURL.String(),
 				emailRecord.UnsubToken,
 			),
-- 
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