import { readFile } from "node:fs/promises";
import { resolve } from "node:path";
import {
  getFeaturedProjects,
  type PortfolioProjectView,
  portfolio,
} from "./portfolio-data";
import {
  createProjectHealthSnapshot,
  PROJECT_HEALTH_MAX_AGE_MS,
  type ProjectHealthSnapshot,
} from "./project-health";

// Só no servidor: lê o arquivo de saúde das demonstrações (node:fs). lib/portfolio-data.ts fica sem Node,
// porque lib/site-content.ts e lib/proof.ts o importam e componentes de cliente chegam a eles.

function isSnapshotFresh(
  snapshot: ProjectHealthSnapshot | null,
  now = new Date(),
) {
  if (!snapshot) return false;
  const checkedAt = Date.parse(snapshot.checkedAt);
  return (
    Number.isFinite(checkedAt) &&
    now.getTime() - checkedAt <= PROJECT_HEALTH_MAX_AGE_MS
  );
}

export async function loadProjectHealthSnapshot(): Promise<ProjectHealthSnapshot | null> {
  try {
    const path = resolve(process.cwd(), "data/project-health.json");
    return JSON.parse(await readFile(path, "utf8")) as ProjectHealthSnapshot;
  } catch {
    return null;
  }
}

export async function loadFeaturedProjects(): Promise<PortfolioProjectView[]> {
  const snapshot = await loadProjectHealthSnapshot();
  if (process.env.NODE_ENV !== "development" || isSnapshotFresh(snapshot)) {
    return getFeaturedProjects(snapshot);
  }

  const projectDemos = portfolio.projects.reduce<
    Array<{ id: string; demoUrl: string }>
  >((demos, project) => {
    if (project.demoUrl)
      demos.push({ id: project.id, demoUrl: project.demoUrl });
    return demos;
  }, []);

  try {
    const refreshed = await createProjectHealthSnapshot(projectDemos);
    const projects = { ...refreshed.projects };

    for (const [id, check] of Object.entries(projects)) {
      if (!check.error && check.status !== null) continue;
      const previous = snapshot?.projects[id];
      if (previous && !previous.error && previous.status !== null) {
        projects[id] = previous;
      } else {
        delete projects[id];
      }
    }

    return getFeaturedProjects({ ...refreshed, projects });
  } catch {
    return getFeaturedProjects(snapshot);
  }
}