#![doc(hidden)]
#![expect(
    clippy::redundant_pub_crate,
    reason = "this private runtime summary helper only feeds the CLI runtime host and does not define public-facing API contracts"
)]

use super::{
    BtStatusReport, CliError, InProcessRpcDispatcher, dispatcher_status_for_gid,
    dispatcher_status_summary_for_gid, parse_bt_status_report, rpc_status_text,
};
use crate::runtime_planning::RegisteredRuntimeEntry;

#[derive(Clone, Debug, Default)]
pub(super) struct RuntimeExecutionSummary {
    pub(super) first_gid: Option<String>,
    pub(super) tracked_download_count: usize,
    pub(super) completed_download_count: usize,
    pub(super) first_status: Option<String>,
    pub(super) first_total_length: Option<u64>,
    pub(super) first_completed_length: Option<u64>,
    pub(super) first_connections: Option<u32>,
    pub(super) first_bt_status: Option<BtStatusReport>,
}

pub(super) fn collect_runtime_execution_summary(
    dispatcher: &mut InProcessRpcDispatcher,
    entries: &[RegisteredRuntimeEntry],
) -> Result<RuntimeExecutionSummary, CliError> {
    let mut summary = RuntimeExecutionSummary {
        first_gid: entries.first().map(|entry| entry.gid.clone()),
        tracked_download_count: dispatcher.tracked_download_count(),
        ..RuntimeExecutionSummary::default()
    };

    for (index, entry) in entries.iter().enumerate() {
        let status = dispatcher_status_summary_for_gid(dispatcher, &entry.gid)?;
        let status_value = rpc_status_text(status.status);
        if status.status.as_rpc_status() == "complete" {
            summary.completed_download_count = summary.completed_download_count.saturating_add(1);
        }
        if index == 0 {
            summary.first_total_length = Some(status.total_length);
            summary.first_completed_length = Some(status.completed_length);
            summary.first_connections = Some(status.connections);
            summary.first_status = Some(status_value);
            if status.is_bt {
                let full_status = dispatcher_status_for_gid(dispatcher, &entry.gid)?;
                summary.first_bt_status = parse_bt_status_report(&full_status);
            }
        }
    }

    Ok(summary)
}