feat(apis/websocket): clear old client sessions and instances

apis/websocket/src/context.ts

@@ -0,0 +1,63 @@
+import { OEM, createWorker as createTesseractWorker } from 'tesseract.js'
+
+import { join as joinPath } from 'path'
+import { createLogger } from '@revanced/bot-shared'
+import { exists as pathExists } from 'fs/promises'
+import { getConfig } from './utils/config'
+
+export const config = getConfig()
+
+export const logger = createLogger({
+    level: config.logLevel === 'none' ? Number.MAX_SAFE_INTEGER : config.logLevel,
+})
+
+export const wit = {
+    token: process.env['WIT_AI_TOKEN']!,
+    async fetch(route: string, options?: RequestInit) {
+        const res = await fetch(`https://api.wit.ai${route}`, {
+            headers: {
+                Authorization: `Bearer ${this.token}`,
+                'Content-Type': 'application/json',
+            },
+            ...options,
+        })
+
+        if (!res.ok) throw new Error(`Failed to fetch from Wit.ai: ${res.statusText} (${res.status})`)
+
+        return await res.json()
+    },
+    message(text: string) {
+        return this.fetch(`/message?q=${encodeURIComponent(text)}&n=8`) as Promise<WitMessageResponse>
+    },
+    async train(text: string, label: string) {
+        await this.fetch('/utterances', {
+            body: JSON.stringify([
+                {
+                    text,
+                    intent: label,
+                    entities: [],
+                    traits: [],
+                },
+            ]),
+            method: 'POST',
+        })
+    },
+} as const
+
+export interface WitMessageResponse {
+    text: string
+    intents: Array<{
+        id: string
+        name: string
+        confidence: number
+    }>
+}
+
+const TesseractWorkerPath = joinPath(import.meta.dir, 'worker', 'index.js')
+const TesseractCompiledWorkerExists = await pathExists(TesseractWorkerPath)
+
+export const tesseract = await createTesseractWorker(
+    'eng',
+    OEM.DEFAULT,
+    TesseractCompiledWorkerExists ? { workerPath: TesseractWorkerPath } : undefined,
+)