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Load system prompt from persistent file

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- Load system prompt from data/system-prompt.txt (persistent)
- Fallback to AI_SYSTEM_PROMPT env variable
- Fallback to hardcoded default
- File can be edited without rebuilding container
- Includes default UlfBot/SchrottBot personality

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
This commit is contained in:
Sarah Kuhn
2026-03-24 10:54:36 +01:00
parent cffc818dd9
commit cfa281e676
5 changed files with 58 additions and 3 deletions
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16
src/index.ts
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@@ -1,5 +1,6 @@
import 'dotenv/config';
import { Telegraf, Context } from 'telegraf';
import { readFileSync, existsSync } from 'fs';
import { MarkovChain } from './markov.js';
import { generateAIResponse, maskApiKey, getDefaultBaseUrl, getProviderModels } from './ai.js';
import {
@@ -27,7 +28,20 @@ const bot = new Telegraf(process.env.BOT_TOKEN!);
const AI_DEFAULT_API_KEY = process.env.AI_DEFAULT_API_KEY || '';
const AI_DEFAULT_BASE_URL = process.env.AI_DEFAULT_BASE_URL || 'https://api.openai.com/v1';
const AI_DEFAULT_MODEL = process.env.AI_DEFAULT_MODEL || 'gpt-4o-mini';
const AI_SYSTEM_PROMPT = process.env.AI_SYSTEM_PROMPT || 'Du bist ein freundlicher Chat-Bot in einer Telegram-Gruppe. Antworte kurz und prägnant auf Deutsch.';
// System prompt: load from file or fallback to env/default
const SYSTEM_PROMPT_FILE = 'data/system-prompt.txt';
function loadSystemPrompt(): string {
try {
if (existsSync(SYSTEM_PROMPT_FILE)) {
return readFileSync(SYSTEM_PROMPT_FILE, 'utf-8').trim();
}
} catch (error) {
console.warn('Could not load system-prompt.txt, using fallback');
}
return process.env.AI_SYSTEM_PROMPT || 'Du bist ein freundlicher Chat-Bot in einer Telegram-Gruppe. Antworte kurz und prägnant auf Deutsch.';
}
const AI_SYSTEM_PROMPT = loadSystemPrompt();
// In-memory cache of chains
const chains = new Map<number, MarkovChain>();