//! Modal helpers for permission dialogs and the session picker.
//!
//! Rendering lives in `render.rs`; key handling lives in `input.rs`. This module
//! provides shared utilities for modal state transitions.

use harness_app::EngineHandle;
use harness_core::permission::PermissionReply;
use harness_core::types::Session;

use crate::state::{AppState, ModalState};

/// Resolve the current permission request with `reply`.
pub fn resolve_permission(state: &mut AppState, engine: &EngineHandle, reply: PermissionReply) {
    state.handle_permission_reply(reply, engine);
}

/// Open the session picker with the supplied sessions.
pub fn open_session_picker(state: &mut AppState, sessions: Vec<Session>) {
    state.open_session_picker(sessions);
}

/// Load a session's messages and parts into state.
pub async fn select_session(
    state: &mut AppState,
    engine: &EngineHandle,
    session: Session,
) -> Result<(), harness_app::AppError> {
    let session_id = session.id.clone();
    let messages = engine.session_messages(session_id).await?;
    let mut all_parts = Vec::new();
    for message in &messages {
        let parts = engine.message_parts(message.id.clone()).await?;
        all_parts.extend(parts);
    }
    state.set_session(session, messages, all_parts);
    state.modal = ModalState::None;
    Ok(())
}