bevy_rig 0.1.0

Bevy ECS primitives and systems for modeling providers, agents, tools, sessions, runs, and workflows on top of Rig.
Documentation 
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use bevy_app::App;
use bevy_ecs::prelude::*;
use bevy_rig::prelude::*;
use serde_json::json;

fn main() {
    let mut app = App::new();
    app.add_plugins(BevyRigPlugin);

    let workflow = {
        let world = app.world_mut();
        let reviewer = spawn_agent(world, AgentSpec::new("reviewer", "mock-reviewer")).agent;
        let uppercase_tool = world
            .spawn(ToolBundle::new(ToolSpec::new(
                "uppercase",
                "Uppercases the input",
                json!({"type":"object","properties":{"text":{"type":"string"}}}),
            )))
            .id();
        register_tool_system(world, uppercase_tool, uppercase_text)
            .expect("tool registration should work");

        let workflow = spawn_workflow(
            world,
            WorkflowSpec::new("review-flow", "Prompt, transform, then review"),
        );
        let prompt_node = spawn_workflow_node(world, workflow, WorkflowNodeKind::Prompt, "rewrite")
            .expect("prompt node");
        let tool_node = spawn_workflow_node(world, workflow, WorkflowNodeKind::Tool, "uppercase")
            .expect("tool node");
        let agent_node = spawn_workflow_node(world, workflow, WorkflowNodeKind::Agent, "review")
            .expect("agent node");

        set_workflow_node_prompt_template(world, prompt_node, "Rewrite for review: {{input}}")
            .expect("prompt template");
        bind_workflow_node(world, tool_node, uppercase_tool).expect("tool binding");
        bind_workflow_node(world, agent_node, reviewer).expect("agent binding");
        set_workflow_entry(world, workflow, prompt_node).expect("entry node");
        connect_workflow_nodes(world, prompt_node, tool_node, None::<String>)
            .expect("prompt -> tool");
        connect_workflow_nodes(world, tool_node, agent_node, None::<String>)
            .expect("tool -> agent");

        workflow
    };

    app.world_mut()
        .write_message(RunWorkflow::new(workflow, "please inspect bevy_rig"));
    app.update();

    let invocation = {
        let mut query = app
            .world_mut()
            .query_filtered::<Entity, With<WorkflowInvocation>>();
        query
            .iter(app.world())
            .next()
            .expect("workflow invocation should exist")
    };
    let session = app
        .world()
        .get::<WorkflowRunSession>(invocation)
        .expect("workflow invocation should have a session")
        .0;

    for (role, text) in collect_transcript(app.world(), session) {
        println!("{role:?}: {text}");
    }
}

fn uppercase_text(In(call): In<ToolCall>) -> ToolExecutionResult {
    let text = call
        .args
        .get("text")
        .and_then(|value| value.as_str())
        .ok_or_else(|| ToolExecutionError::new("missing text argument"))?;

    Ok(ToolOutput::text(text.to_ascii_uppercase()))
}