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На новый вопрос он сам ищет\n// самую похожую выученную тему и отвечает по ней. Если не знает —\n// просит научить, и запоминает навсегда. Чем больше общения — тем умнее.\n\nconst jsonHeaders = { \"content-type\": \"application/json; charset=utf-8\" };\n\n// Готовим хранилище (идемпотентно)\nawait sqlite.execute(`CREATE TABLE IF NOT EXISTS messages (\n id INTEGER PRIMARY KEY AUTOINCREMENT,\n session TEXT NOT NULL,\n role TEXT NOT NULL,\n content TEXT NOT NULL,\n created_at TEXT DEFAULT (datetime('now'))\n)`);\nawait sqlite.execute(`CREATE TABLE IF NOT EXISTS knowledge (\n id INTEGER PRIMARY KEY AUTOINCREMENT,\n topic TEXT NOT NULL,\n answer TEXT NOT NULL,\n hit_count INTEGER DEFAULT 0\n)`);\nawait sqlite.execute(`CREATE INDEX IF NOT EXISTS idx_session ON messages(session, id)`);\n\nexport default async function handler(req: Request): Promise {\n const url = new URL(req.url);\n\n if (req.method === \"GET\") {\n return new Response(HTML, { headers: { \"content-type\": \"text/html; charset=utf-8\" } });\n }\n\n const body = await req.json().catch(() => null);\n const session = (body?.session || \"default\").toString();\n let message = (body?.message || \"\").toString().trim();\n if (message === \"\") return new Response(JSON.stringify({ reply: \"Напиши что-нибудь 🙂\" }), { headers: jsonHeaders });\n\n // ── обучение: \"/учить <ответ>\" запоминает последний неизвестный вопрос ──\n const teach = message.match(/^\\/(?:учить|обучить|learn)\\s+([\\s\\S]+)$/i);\n if (teach) {\n const answer = teach[1].trim();\n await learnLastUnknown(session, answer);\n return new Response(JSON.stringify({ reply: \"✅ Запомнил это как научил! Теперь отвечу сам.\" }), { headers: jsonHeaders });\n }\n\n // ── забыть: \"/забудь <ответ>\" или \"/забудь\" ──\n const forget = message.match(/^\\/(?:забудь|удали|forget)\\s*([\\s\\S]*)$/i);\n if (forget) {\n const which = forget[1].trim();\n if (!which) {\n await sqlite.execute({ sql: \"DELETE FROM knowledge WHERE answer = (SELECT answer FROM knowledge ORDER BY hit_count DESC LIMIT 1)\" });\n return new Response(JSON.stringify({ reply: \"Удалил самый используемый ответ.\" }), { headers: jsonHeaders });\n }\n const res = await sqlite.execute({ sql: \"DELETE FROM knowledge WHERE lower(answer) LIKE lower(?)\", args: [`%${which}%`] });\n return new Response(JSON.stringify({ reply: res.rowsAffected > 0 ? \"🗑 Удалил: \" + which : \"Ничего не нашёл под это.\" }), { headers: jsonHeaders });\n }\n\n // ── сохраняем в историю ученика ──\n await sqlite.execute({\n sql: \"INSERT INTO messages (session, role, content) VALUES (?, 'user', ?)\",\n args: [session, message],\n });\n\n const { reply, known } = await answer(message);\n\n await sqlite.execute({\n sql: \"INSERT INTO messages (session, role, content) VALUES (?, 'assistant', ?)\",\n args: [session, reply],\n });\n\n return new Response(JSON.stringify({ reply, known }), { headers: jsonHeaders });\n}\n\n// ── Ядро самообучающейся модели ───────────────────────────────────────\nfunction tokenize(text: string): Set {\n const stops = new Set([\"для\", \"мне\", \"это\", \"как\", \"что\", \"можно\", \"написать\", \"сделать\", \"при\", \"во\", \"на\", \"не\", \"и\", \"в\", \"с\", \"по\", \"есть\"]);\n const words = text.toLowerCase().match(/[a-zа-яё0-9_]+/gi) || [];\n return new Set(words.filter((w) => w.length > 2 && !stops.has(w)));\n}\n\nfunction jaccard(a: Set, b: Set): number {\n if (a.size === 0 || b.size === 0) return 0;\n let inter = 0;\n for (const w of a) if (b.has(w)) inter++;\n return inter / (a.size + b.size - inter);\n}\n\n// Находит похожую тему; если нет — ограничивает обучение на последний вопрос\nasync function answer(message: string): Promise<{ reply: string; known: boolean }> {\n const q = tokenize(message);\n\n const rows = await sqlite.execute(\"SELECT id, topic, answer, hit_count FROM knowledge\");\n const all = rows.rows as { id: number; topic: string; answer: string; hit_count: number }[];\n\n let best: { score: number; row?: (typeof all)[number] } = { score: 0 };\n for (const row of all) {\n const s = jaccard(q, tokenize(row.topic));\n if (s > best.score) best = { score: s, row };\n }\n\n if (best.row && best.score >= 0.45) {\n await sqlite.execute({ sql: \"UPDATE knowledge SET hit_count = hit_count + 1 WHERE id = ?\", args: [best.row.id] });\n return { reply: best.row.answer, known: true };\n }\n\n // Не знаем → запоминаем вопрос, чтобы потом научить\n await sqlite.execute({\n sql: \"INSERT INTO knowledge (topic, answer) VALUES (?, '')\",\n args: [message],\n });\n return {\n reply:\n \"Хм, этого я ещё не знаю 🤔 Научи меня — пришли ответ в формате:\\n\\n`/учить <твой ответ>`\\n\\nЯ запомню и в следующий раз отвечу сам.\",\n known: false,\n };\n}\n\n// Привязывает ответ к последнему неизвестному вопросу\nasync function learnLastUnknown(session: string, answerText: string): Promise {\n const res = await sqlite.execute(\n \"SELECT id FROM knowledge WHERE answer = '' ORDER BY id DESC LIMIT 1\",\n );\n const rows = res.rows as { id: number }[];\n if (!rows[0]) {\n await sqlite.execute({ sql: \"INSERT INTO knowledge (topic, answer) VALUES (?, ?)\", args: [\"(без вопроса)\", answerText] });\n return;\n }\n await sqlite.execute({ sql: \"UPDATE knowledge SET answer = ? WHERE id = ?\", args: [answerText, rows[0].id] });\n}\n\n// ── Интерфейс Codey ───────────────────────────────────────────────────\nconst HTML = `\n\n\n \n \n Codey — самообучающийся ИИ\n \n\n\n

\n 🧠\n

Codey

\n \n

самообучающийся ИИ — чем больше учишь, тем умнее

\n \n \n

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