Step Choices Parameter

"""
Step Choices Parameter
======================

Demonstrates using `step_choices` in a router selector for dynamic step selection.
"""

from typing import List, Union

from agno.agent.agent import Agent
from agno.models.openai import OpenAIChat
from agno.workflow.router import Router
from agno.workflow.step import Step
from agno.workflow.types import StepInput
from agno.workflow.workflow import Workflow

# ---------------------------------------------------------------------------
# Create Agents
# ---------------------------------------------------------------------------
researcher = Agent(
    name="researcher",
    model=OpenAIChat(id="gpt-4o-mini"),
    instructions="You are a researcher.",
)

writer = Agent(
    name="writer",
    model=OpenAIChat(id="gpt-4o-mini"),
    instructions="You are a writer.",
)

reviewer = Agent(
    name="reviewer",
    model=OpenAIChat(id="gpt-4o-mini"),
    instructions="You are a reviewer.",
)


# ---------------------------------------------------------------------------
# Define Router Selector
# ---------------------------------------------------------------------------
def dynamic_selector(
    step_input: StepInput,
    step_choices: list,
) -> Union[str, Step, List[Step]]:
    user_input = step_input.input.lower()
    step_map = {s.name: s for s in step_choices if hasattr(s, "name") and s.name}

    print(f"Available steps: {list(step_map.keys())}")

    if "research" in user_input:
        return "researcher"
    if "write" in user_input:
        return step_map.get("writer", step_choices[0])
    if "full" in user_input:
        return [step_map["researcher"], step_map["writer"], step_map["reviewer"]]
    return step_choices[0]


# ---------------------------------------------------------------------------
# Create Workflow
# ---------------------------------------------------------------------------
workflow = Workflow(
    name="Dynamic Routing (step_choices)",
    steps=[
        Router(
            name="Dynamic Router",
            selector=dynamic_selector,
            choices=[researcher, writer, reviewer],
        ),
    ],
)

# ---------------------------------------------------------------------------
# Run Workflow
# ---------------------------------------------------------------------------
if __name__ == "__main__":
    workflow.print_response("I need to research something", stream=True)

# Clone and setup repo
git clone https://github.com/agno-agi/agno.git
cd agno/cookbook/04_workflows/05_conditional_branching

# Create and activate virtual environment
./scripts/demo_setup.sh
source .venvs/demo/bin/activate

python step_choices_parameter.py