"""
Slide 67: Slide 7
Section 3: Deep Agents
Source: slides/section3-deepagents/section3.pptx

Сгенерировано автоматически из slide-NN.js / sectionN.pptx.
Паттерн провайдера скопирован из
bro-js/agents/teacher/assistant/src/angry_teacher/llm.py.

Запуск:
  cd langchain-evolution-deck
  cp .env.example .env   # заполни OPENAI_API_KEY
  python examples/slide-067/script.py
"""
import os
from dotenv import load_dotenv
from langchain_openai import ChatOpenAI

load_dotenv()

llm = ChatOpenAI(
    # model="openrouter/free",
    # model="qwen/qwen3.5-35b-a3b",
    model="openai/gpt-oss-20b",
    # model="nvidia/nemotron-3-nano",
    # model="qwen/qwen3.5-9b",
    base_url="https://llm.brojs.ru/v1",
    # base_url="https://api.minimax.io/v1",
    # base_url="http://0.0.0.0:8090/v1",
    # base_url="https://openrouter.ai/api/v1",
    # api_key=os.getenv("MINIMAX_API_KEY"),
    api_key=(os.getenv("OPENAI_API_KEY") or "").strip() or None,
    temperature=0.7,
    stream_usage=True,
)


# === Code from slide 67 ===
// examples/system_prompt.py:1-16

  SYSTEM_PROMPT = """
  You are a senior backend engineer.

> WORKFLOW:
>   1. Plan with write_todos before non-trivial work.
>   2. Explore the codebase via ls / glob / grep first.
>   3. Use edit_file for surgical changes, write_file for new files.
>   4. Delegate research tasks to the "researcher" subagent.
    5. Run tests via execute; never claim success without output.

  CONSTRAINTS:
>   - Do not modify files outside ./src.
>   - Stop and ask the user if requirements are ambiguous.
  """

  agent = create_deep_agent(model=..., system_prompt=SYSTEM_PROMPT)