import type { BrowserWindow } from 'electron';
import type { PerfDiagEntry } from './diagnostics.models';

export async function collectImmediateRendererSamples(
  window: BrowserWindow | null | undefined
): Promise<PerfDiagEntry[]> {
  if (!window || window.isDestroyed()) {
    return [];
  }

  try {
    const result = await window.webContents.executeJavaScript(`
      (function () {
        const collect = globalThis.__collectPerfDiagSample;

        return typeof collect === 'function' ? collect() : [];
      })()
    `, true);

    if (!Array.isArray(result)) {
      return [];
    }

    return result
      .filter((entry) => entry && typeof entry === 'object')
      .map((entry) => normalizeImmediateRendererEntry(entry as Partial<PerfDiagEntry>));
  } catch {
    return [];
  }
}

function normalizeImmediateRendererEntry(entry: Partial<PerfDiagEntry>): PerfDiagEntry {
  return {
    collectedAt: Number(entry.collectedAt) || Date.now(),
    source: 'renderer',
    type: entry.type ?? 'session',
    payload: entry.payload ?? {}
  };
}