//! `query()` with a custom system prompt, model selection, and `cwd`.
//!
//! Run:
//!
//! ```sh
//! cargo run --example with_options
//! ```

use claude_agent_sdk::{
    ClaudeAgentOptions, ContentBlock, Effort, Message, PermissionMode, query,
};
use tokio_stream::StreamExt;

#[tokio::main]
async fn main() -> anyhow::Result<()> {
    let opts = ClaudeAgentOptions::new()
        .with_system_prompt("You are a senior Rust engineer. Be terse.")
        .with_model("claude-sonnet-4-5")
        .with_max_turns(1)
        .with_effort(Effort::Low)
        .with_permission_mode(PermissionMode::Plan);

    let mut stream = query(
        "In one sentence, what does the `?` operator do in Rust?",
        opts,
    )
    .await?;

    while let Some(item) = stream.next().await {
        match item? {
            Message::Assistant(a) => {
                for block in &a.message.content {
                    if let ContentBlock::Text(t) = block {
                        println!("{}", t.text);
                    }
                }
            }
            Message::Result(_) => break,
            _ => {}
        }
    }
    Ok(())
}