add api for getting statistics

.bruno/Authenticated/General Utility/Bot Statistics.bru

@@ -0,0 +1,11 @@
+meta {
+  name: Bot Statistics
+  type: http
+  seq: 2
+}
+
+get {
+  url: http://localhost:8166/api/stats
+  body: none
+  auth: inherit
+}

src/api.ts

@@ -102,6 +102,9 @@ const start = () => {
                 case '/ping':
                 case '/ping/':
                   return endpoints.get.apiPing();
+                case '/stats':
+                case '/stats/':
+                  return endpoints.get.apiStats();
                 case '/key':
                 case '/key/':
                   return endpoints.get.apiKeyAdmin(query, apiUserid);

src/endpoints/_index.ts

@@ -5,6 +5,7 @@ import { apiKey } from 'endpoints/gets/apiKey.ts';
 import { apiKeyAdmin } from 'endpoints/gets/apiKeyAdmin.ts';
 import { apiPing } from 'endpoints/gets/apiPing.ts';
 import { apiRoll } from 'endpoints/gets/apiRoll.ts';
+import { apiStats } from 'endpoints/gets/apiStats.ts';
 import { generateWebView } from 'endpoints/gets/webView.ts';
 import { heatmapPng } from 'endpoints/gets/heatmapPng.ts';
 
@@ -24,6 +25,7 @@ export default {
     apiKeyAdmin,
     apiPing,
     apiRoll,
+    apiStats,
     generateWebView,
     heatmapPng,
   },

src/endpoints/gets/apiStats.ts

@@ -0,0 +1,44 @@
+import { cache, cacheHandlers } from '@discordeno';
+import { STATUS_CODE, STATUS_TEXT } from '@std/http/status';
+
+import { basicReducer } from 'artigen/utils/reducers.ts';
+
+import dbClient from 'db/client.ts';
+
+import stdResponses from 'endpoints/stdResponses.ts';
+
+import utils from 'utils/utils.ts';
+
+export const apiStats = async (): Promise<Response> => {
+  const headers = new Headers();
+  headers.append('Content-Type', 'text/json');
+
+  const memberCount = cache.guilds
+    .array()
+    .map((guild) => guild.memberCount)
+    .reduce(basicReducer);
+
+  const cachedGuilds = await cacheHandlers.size('guilds');
+
+  const rollQuery = await dbClient
+    .query(`SELECT count, hourlyRate FROM command_cnt WHERE command = "roll";`)
+    .catch((e) => utils.commonLoggers.dbError('stats.ts:23', 'query', e));
+  const rollCount = BigInt(rollQuery[0].count ?? '0');
+
+  if (!rollCount) {
+    return stdResponses.InternalServerError('');
+  }
+
+  return new Response(
+    JSON.stringify({
+      guildCount: cachedGuilds + cache.dispatchedGuildIds.size,
+      memberCount,
+      rollCount,
+    }),
+    {
+      status: STATUS_CODE.OK,
+      statusText: STATUS_TEXT[STATUS_CODE.OK],
+      headers,
+    }
+  );
+};