settings: let users delete their accountHEADmaster

A Delete account entry on the security tab leads to /settings/delete,
which warns what's lost, asks for the username (and PIN when set) and
calls the server's POST /delete, then logs out. The page resets to the
(app) layout so its form isn't nested in the settings save form.

Co-Authored-By: Claude Opus 5.5 <[email protected]>

3 files changed, 119 insertions, 0 deletions

diff --git a/src/routes/(app)/settings/delete/+page.server.ts b/src/routes/(app)/settings/delete/+page.server.ts
new file mode 100644
index 00000000..05f4f026
--- /dev/null
+++ b/src/routes/(app)/settings/delete/+page.server.ts
@@ -0,0 +1,26 @@
+import { auth, post } from "$lib/utils";
+import { fail, redirect } from "@sveltejs/kit";
+
+export async function load({ parent, url }) {
+	const { user } = await parent();
+	if (!user) redirect(307, `/login?redirect=${encodeURIComponent(url.pathname)}`);
+}
+
+export const actions = {
+	default: async ({ cookies, request }) => {
+		const form = await request.formData();
+		const confirm = String(form.get("confirm") || "");
+		const pin = String(form.get("pin") || "");
+
+		try {
+			// The server wipes everything (lib/deluser), including disabling the
+			// account's bolt12 offers, and refuses while a real balance remains.
+			await post("/delete", { confirm, ...(pin ? { pin } : {}) }, auth(cookies));
+		} catch (e) {
+			return fail(400, { error: e?.message || String(e), confirm });
+		}
+
+		// The account is gone; /logout clears the session cookies.
+		redirect(303, "/logout");
+	},
+};
diff --git a/src/routes/(app)/settings/delete/+page@(app).svelte b/src/routes/(app)/settings/delete/+page@(app).svelte
new file mode 100644
index 00000000..e19a6604
--- /dev/null
+++ b/src/routes/(app)/settings/delete/+page@(app).svelte
@@ -0,0 +1,82 @@
+<script>
+  // Rendered outside the settings layout (+page@(app)) so this form isn't
+  // nested inside the settings save form.
+  import { enhance } from "$app/forms";
+  import { t } from "$lib/translations";
+
+  let { data, form } = $props();
+  let { user } = $derived(data);
+
+  let confirm = $state(form?.confirm || "");
+  let working = $state(false);
+  let matches = $derived(
+    confirm.trim().toLowerCase() === user.username.toLowerCase(),
+  );
+</script>
+
+<div class="container px-4 max-w-xl mx-auto space-y-5 mt-10">
+  <h1 class="text-3xl font-bold text-center">
+    {$t("user.settings.deleteAccount")}
+  </h1>
+
+  <div class="rounded-2xl border-2 border-error p-4 space-y-3">
+    <p class="flex gap-2">
+      <iconify-icon
+        noobserver
+        icon="ph:warning-bold"
+        width="24"
+        class="text-error shrink-0"
+      ></iconify-icon>
+      <span>{$t("user.settings.deleteAccountWarning")}</span>
+    </p>
+    <p class="text-secondary">{$t("user.settings.deleteAccountBalance")}</p>
+  </div>
+
+  {#if form?.error}<p class="text-error">{form.error}</p>{/if}
+
+  <form
+    method="POST"
+    class="space-y-3"
+    use:enhance={() => {
+      working = true;
+      return async ({ update }) => {
+        await update({ reset: false });
+        working = false;
+      };
+    }}
+  >
+    <label class="block space-y-1">
+      <span class="font-bold">{$t("user.settings.deleteAccountConfirm")}</span>
+      <input
+        class="input input-bordered w-full"
+        name="confirm"
+        autocomplete="off"
+        autocapitalize="off"
+        spellcheck="false"
+        placeholder={user.username}
+        bind:value={confirm}
+      />
+    </label>
+
+    {#if user.haspin}
+      <input
+        class="input input-bordered w-full"
+        type="password"
+        inputmode="numeric"
+        name="pin"
+        placeholder={$t("user.settings.securityPIN")}
+      />
+    {/if}
+
+    <button
+      class="btn btn-error w-full rounded-2xl"
+      disabled={!matches || working}
+    >
+      <iconify-icon noobserver icon="ph:trash-bold" width="24"></iconify-icon>
+      {$t("user.settings.deleteAccountButton")}
+    </button>
+    <a href="/settings/security" class="btn w-full rounded-2xl">
+      {$t("payments.cancel")}
+    </a>
+  </form>
+</div>
diff --git a/src/routes/(app)/settings/security/+page.svelte b/src/routes/(app)/settings/security/+page.svelte
index b774d919..b8c71aa6 100644
--- a/src/routes/(app)/settings/security/+page.svelte
+++ b/src/routes/(app)/settings/security/+page.svelte
@@ -288,3 +288,14 @@
     </button>
   </a>
 </div>
+
+<div>
+  <span class="font-bold mb-1">{$t("user.settings.deleteAccount")}</span>
+  <p class="text-secondary mb-4">
+    {$t("user.settings.deleteAccountDescription")}
+  </p>
+  <a href="/settings/delete" class="btn btn-outline btn-error">
+    <iconify-icon noobserver icon="ph:trash-bold" width="32"></iconify-icon>
+    {$t("user.settings.deleteAccount")}
+  </a>
+</div>