build uex cache on start

2 files changed, 53 insertions, 1 deletions

diff --git a/174bg/discord-bot/.gitignore b/174bg/discord-bot/.gitignore
index 9b6ab89..ae5e1e0 100644
--- a/174bg/discord-bot/.gitignore
+++ b/174bg/discord-bot/.gitignore
@@ -1,2 +1,3 @@
 /.env
-/node_modules/
\ No newline at end of file
+/node_modules/
+/.cache/
\ No newline at end of file
diff --git a/174bg/discord-bot/main.js b/174bg/discord-bot/main.js
index fc4da76..02400d6 100644
--- a/174bg/discord-bot/main.js
+++ b/174bg/discord-bot/main.js
@@ -14,6 +14,8 @@ import {
 
 import commands from "./commands/_index.js";
 
+import fs from "fs";
+
 const client = new Client({
   intents: [GatewayIntentBits.Guilds, GatewayIntentBits.GuildMembers],
 });
@@ -22,6 +24,8 @@ client.on(Events.ClientReady, async (readyClient) => {
   console.log(`Logged in as ${readyClient.user.tag}!`);
 
   await registerCommands();
+
+  await buildCache();
 });
 
 client.on(Events.InteractionCreate, async (interaction) => {
@@ -77,3 +81,50 @@ async function registerCommands() {
     console.error(error);
   }
 }
+
+async function getUrl(url) {
+  const response = await fetch(url);
+  if (!response.ok) return null;
+  return await response.json();
+}
+
+async function buildCache() {
+  if (!fs.existsSync("./.cache")) fs.mkdirSync("./.cache");
+
+  const uex = {};
+  
+  uex.categories = (await getUrl("https://api.uexcorp.uk/2.0/categories"))?.data;
+
+  for (const category of uex.categories) {
+    if (category.type === "item") {
+      if (!uex.items) uex.items = {};
+      if (!uex.items[category.section]) uex.items[category.section] = {};
+      uex.items[category.section][category.name] = (await getUrl(`https://api.uexcorp.uk/2.0/items?id_category=${category.id}`))?.data;
+    }
+  }
+
+  // is there a difference between the current cache and the new cache?
+  if (fs.existsSync("./.cache/uex.json")) {
+    const currentCache = JSON.parse(fs.readFileSync("./.cache/uex.json", "utf-8"));
+
+    if (JSON.stringify(currentCache) === JSON.stringify(uex)) {
+      console.log("No changes detected in UEX cache.");
+      return;
+    }
+
+    console.log("Changes detected in UEX cache. Updating cache.");
+
+    // backup the current cache YYMMDDHHMMSS
+    fs.writeFileSync(
+      `./.cache/uex.json.bak.${new Date().toISOString().replace(/[-:]/g, "").replace(/\..+/, "")}`,
+      JSON.stringify(currentCache, null, 2),
+    );
+  } else {
+    console.log("No existing UEX cache found. Creating new cache.");
+  }
+
+  fs.writeFileSync(
+    "./.cache/uex.json",
+    JSON.stringify(uex, null, 2),
+  );
+}
\ No newline at end of file