From b6482d86fa58dee7d55889fa873463274f81d3db Mon Sep 17 00:00:00 2001
From: "Jakob L. Kreuze" <zerodaysfordays@sdf.org>
Date: Tue, 15 Nov 2022 18:54:30 -0500
Subject: [dynamic] Cut chalkline

---
 haunt/jakob/builder/blog.scm     |  3 ++-
 haunt/jakob/utils/comments.scm   | 12 +-----------
 haunt/static/js/proof-of-work.js | 34 ++++++++++++++++++++++++++++++++++
 3 files changed, 37 insertions(+), 12 deletions(-)
 create mode 100644 haunt/static/js/proof-of-work.js

(limited to 'haunt')

diff --git a/haunt/jakob/builder/blog.scm b/haunt/jakob/builder/blog.scm
index 76782dc..b1e19fa 100644
--- a/haunt/jakob/builder/blog.scm
+++ b/haunt/jakob/builder/blog.scm
@@ -26,8 +26,8 @@
   #:use-module (jakob utils pagination)
   #:use-module (jakob utils sxml)
   #:use-module (jakob utils tags)
-  #:use-module (jakob utils webmention)
   #:use-module (jakob utils comments)
+  ;; #:use-module (jakob utils webmention)
   #:use-module (srfi srfi-1)
   #:use-module (srfi srfi-19)
   #:use-module (srfi srfi-26)
@@ -86,6 +86,7 @@
       (h2 ,(hyperlink "https://indieweb.org/Webmention" "Webmentions")
           " for this Page")
       (ul (@ (id "webmention-container"))
+          ;; ,@(render-comment-view (fetch-webmentions (post-identifier post))))
           ,@(render-comment-view (fetch-comments (post-identifier post))))
       (form
        (@ (action "https://webmention.io/jakob.space/webmention")
diff --git a/haunt/jakob/utils/comments.scm b/haunt/jakob/utils/comments.scm
index 7cb4768..3f55345 100644
--- a/haunt/jakob/utils/comments.scm
+++ b/haunt/jakob/utils/comments.scm
@@ -102,14 +102,4 @@
 
 (define (fetch-comments slug)
   "Blocking call to webmention.io to retrieve a vector of all Webmentions for `slug'"
-  (get-comments-by-slug slug)
-  ;; (list '((id . 1)
-  ;;         (published . "20220514122120")
-  ;;         (name . "Jakob")
-  ;;         (subject . "Test")
-  ;;         (email . "jakob@memeware.net")
-  ;;         (comment . "Test")
-  ;;         (url . "jakob.space")
-  ;;         (reactions . (("🎖️" . 2)))))
-  )
-;; dynamic
+  (get-comments-by-slug slug))
diff --git a/haunt/static/js/proof-of-work.js b/haunt/static/js/proof-of-work.js
new file mode 100644
index 0000000..5207ac6
--- /dev/null
+++ b/haunt/static/js/proof-of-work.js
@@ -0,0 +1,34 @@
+const text = 'An obscure body in the S-K System, your majesty. The inhabitants refer to it as the planet Earth.';
+
+function makeid(length) {
+    var result           = '';
+    var characters       = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789';
+    var charactersLength = characters.length;
+    for ( var i = 0; i < length; i++ ) {
+        result += characters.charAt(Math.floor(Math.random() * charactersLength));
+    }
+    return result;
+}
+
+async function digestMessage(message) {
+  const msgUint8 = new TextEncoder().encode(message);                           // encode as (utf-8) Uint8Array
+  const hashBuffer = await crypto.subtle.digest('SHA-256', msgUint8);           // hash the message
+  const hashArray = Array.from(new Uint8Array(hashBuffer));                     // convert buffer to byte array
+  const hashHex = hashArray.map((b) => b.toString(16).padStart(2, '0')).join(''); // convert bytes to hex string
+  return hashHex;
+}
+
+const HARDNESS = 4;
+
+async function findPrefix(challenge) {
+    while (true) {
+        let prefix = makeid(32);
+        let digestHex = await digestMessage(prefix + challenge);
+        if (digestHex.startsWith("0".repeat(HARDNESS))) {
+            return [prefix + challenge, digestHex];
+        }
+    }
+}
+
+const suffix = "p12IyPB2dZsmBHYZyaEMrR5OUxqNc5Z9Cijal+9/iuQ=";
+findPrefix(suffix).then(console.log);
-- 
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