import { projectRef } from "@/lib/projects";
import { resolveMomentOnFile } from "@/lib/report/moments.mjs";

export const dynamic = "force-dynamic";

// GET ?project=<id>&file=<project-relative mp4>&t=<seconds>[&duration=<seconds>]
//
// What is on screen at `t` of a rendered cut (lib/report/moments.mjs): the
// entry, its onscreen title and quote, the source second and its archive link,
// and `approx` when the file and the build's schedule disagree. A timed note
// stores this at write time. `{ entry: null }` when the file has no schedule
// (a preview made without a build) -- the note then keeps `t` alone.
export async function GET(request: Request) {
  const url = new URL(request.url);
  const project = await projectRef(url.searchParams.get("project") ?? "");
  if (!project) return Response.json({ error: "no such project" }, { status: 404 });
  const file = url.searchParams.get("file") ?? "";
  if (!file || file.startsWith("/") || file.split("/").some((s) => s === ".." || s === "")) {
    return Response.json({ error: "file must be relative to the project" }, { status: 400 });
  }
  const t = Number(url.searchParams.get("t"));
  if (!Number.isFinite(t) || t < 0) return Response.json({ error: "t must be seconds ≥ 0" }, { status: 400 });
  const d = Number(url.searchParams.get("duration"));
  const r = await resolveMomentOnFile(project.dir, file, t, Number.isFinite(d) && d > 0 ? d : null);
  return Response.json(r, { headers: { "cache-control": "no-store" } });
}