import { errorResponse, targetFrom } from "@/lib/annotations/server";
import { digest } from "@/lib/annotations/digest.mjs";
import { readNotes } from "@/lib/annotations/store.mjs";

export const dynamic = "force-dynamic";

// The agent brief: the same markdown `umtool notes <target>` prints, as
// text/plain, so "Copy agent brief" and `curl` hand over the words an agent
// would read on the command line.
//
//   /api/notes/context?article=<site>/<report>[&status=open|resolved|all]
//   /api/notes/context?project=<id>[&status=…]
export async function GET(request: Request) {
  try {
    const url = new URL(request.url);
    const target = await targetFrom({ article: url.searchParams.get("article"), project: url.searchParams.get("project") });
    const s = url.searchParams.get("status");
    const status = s === "resolved" || s === "all" ? s : "open";
    const read = await readNotes(target.file);
    const cli = `umtool notes ${target.id}`;
    const body =
      !read.doc && !read.error
        ? `No notes on ${target.id}.\n`
        : `${await digest(
            { kind: target.kind as "article" | "video-project", id: target.id, file: target.file, doc: read.doc, ...(read.error ? { error: read.error } : {}) },
            { status, projectDir: "dir" in target ? target.dir : undefined },
          )}\n\nRead these again with \`${cli}\` (from the repo checkout).\n`;
    return new Response(body, { headers: { "content-type": "text/plain; charset=utf-8", "cache-control": "no-store" } });
  } catch (err) {
    return errorResponse(err);
  }
}