From 460dd83d425e5e83f528dbe7a312593777ca28c2 Mon Sep 17 00:00:00 2001
From: Cynthia Foxwell <gamers@riseup.net>
Date: Tue, 5 Dec 2023 11:17:35 -0700
Subject: [PATCH] codePreviews: spoiler support

---
 src/modules/codePreviews.js | 37 +++++++++++++++++++++++++------------
 1 file changed, 25 insertions(+), 12 deletions(-)

diff --git a/src/modules/codePreviews.js b/src/modules/codePreviews.js
index 7a560bc..f782655 100644
--- a/src/modules/codePreviews.js
+++ b/src/modules/codePreviews.js
@@ -2,13 +2,13 @@ const {MessageFlags} = require("@projectdysnomia/dysnomia").Constants;
 
 const events = require("../lib/events.js");
 const {hasFlag} = require("../lib/guildSettings.js");
-
 const REGEX_GITHUB =
-  /(?:\s|^)https?:\/\/(www\.)?github\.com\/.+?\/.+?\/blob\/([a-zA-Z0-9-_.#/]*)/g;
+  /(?:\s|^)(\|\|\s*)?https?:\/\/(www\.)?github\.com\/[a-z0-9-]+\/[a-z0-9-]+\/blob\/([a-z0-9-_.#/]*)(\s+\|\|)?/gi;
 const REGEX_GITLAB =
-  /(?:\s|^)https?:\/\/.+?\/.+?\/.+?\/-\/blob\/([a-zA-Z0-9-_.#/]*)/g;
+  /(?:\s|^)(\|\|\s*)?https?:\/\/.+?\/[a-z0-9-]+\/[a-z0-9-]+\/-\/blob\/([a-z0-9-_.#/]*)(\s+\|\|)?/gi;
 const REGEX_GITEA =
-  /(?:\s|^)https?:\/\/.+?\/.+?\/.+?\/src\/branch\/([a-zA-Z0-9-_.#/]*)/g;
+  /(?:\s|^)(\|\|\s*)?https?:\/\/.+?\/[a-z0-9-]+\/[a-z0-9-]+\/src\/branch\/([a-z0-9-_.#/]*)(\s+\|\|)?/gi;
+const REGEX_SPOILER = /(?:\s|^)\|\|([\s\S]+?)\|\|/;
 
 function unindent(str) {
   str = str.replace(/\t/g, "    ");
@@ -20,7 +20,7 @@ function unindent(str) {
   return str.replace(new RegExp(`^ {${minIndent}}`, "gm"), "");
 }
 
-async function processFile(link) {
+async function processFile(link, spoiler = false) {
   const res = await fetch(link);
   if (!res.ok) return "";
   if (!res.headers.get("Content-Type").startsWith("text/plain")) return "";
@@ -64,13 +64,23 @@ async function processFile(link) {
 
   if (entireFile && lines.length > 20) return "";
 
-  const targetLines = (
+  let targetLines = (
     entireFile ? lines : lines.slice(startLine - 1, endLine)
   ).join("\n");
 
-  return `**${fileName}: **${whichLines}\n\`\`\`${fileType}\n${unindent(
-    targetLines
-  )}\n\`\`\``;
+  let warning = "";
+  if (spoiler && targetLines.includes("||")) {
+    targetLines = targetLines.replaceAll("||", "|\u200b|");
+    warning = " - :warning: Zero width spaces present";
+  }
+  if (targetLines.includes("``")) {
+    targetLines = targetLines.replaceAll("``", "`\u200b`");
+    warning = " - :warning: Zero width spaces present";
+  }
+
+  return `**${fileName}: **${whichLines}${warning}\n${
+    spoiler ? "||" : ""
+  }\`\`\`${fileType}\n${unindent(targetLines)}\n\`\`\`${spoiler ? "||" : ""}`;
 }
 
 events.add("messageCreate", "codePreviews", async function (msg) {
@@ -86,19 +96,22 @@ events.add("messageCreate", "codePreviews", async function (msg) {
 
   if (githubLinks?.length) {
     for (const link of githubLinks) {
-      files.push(await processFile(link.replace("/blob/", "/raw/")));
+      const spoiler = REGEX_SPOILER.test(link);
+      files.push(await processFile(link.replace("/blob/", "/raw/"), spoiler));
     }
   }
 
   if (gitlabLinks?.length) {
     for (const link of gitlabLinks) {
-      files.push(await processFile(link.replace("/blob/", "/raw/")));
+      const spoiler = REGEX_SPOILER.test(link);
+      files.push(await processFile(link.replace("/blob/", "/raw/"), spoiler));
     }
   }
 
   if (giteaLinks?.length) {
     for (const link of giteaLinks) {
-      files.push(await processFile(link.replace("/src/", "/raw/")));
+      const spoiler = REGEX_SPOILER.test(link);
+      files.push(await processFile(link.replace("/src/", "/raw/"), spoiler));
     }
   }