import { notFound } from "next/navigation";
import type { ProjectRef } from "@/lib/project-types";
import SongProject from "./SongProject";
import CutPage from "./CutPage";
import ReportProject from "./ReportProject";
import ClipBenchPage from "./ClipBenchPage";
import ClaimBenchPage from "./ClaimBenchPage";
import SweepProject from "./SweepProject";
import TakesPage from "./TakesPage";

// ---------------------------------------------------------------------------
// The one place a kind id is matched against a component.
//
// It is HERE rather than in app/browse/[...path]/page.tsx deliberately: the
// rule is that adding a kind costs a registry entry and one view, and an e2e
// spec enforces it by failing when a kind id appears as a string literal
// anywhere outside lib/projects/ and components/projects/. A page that grew an
// `if (kind === "report-video")` would break that rule silently, so the page
// never learns what a kind is -- it resolves a path and renders this.
//
// `rest` is the segments after the project. [] is the project itself; anything
// else is a VIEW the kind declares, and a view a kind does not declare is a 404
// rather than a page that ignores half its URL.
// ---------------------------------------------------------------------------

export default async function ProjectView({
  project,
  rest,
  search,
}: {
  project: ProjectRef;
  rest: string[];
  search: Record<string, string | undefined>;
}) {
  switch (project.kind) {
    case "song": {
      if (rest.length === 0) return <SongProject id={project.name} />;
      if (rest.length === 1) return <CutPage id={project.name} cutName={rest[0]} search={search} />;
      return notFound();
    }
    case "report-video": {
      if (rest.length === 0) return <ReportProject project={project} search={search} />;
      // `/browse/<project>/clip/<id>` -- the bench. A view the kind does not
      // declare is a 404 rather than a page that silently drops half its URL.
      if (rest.length === 2 && rest[0] === "clip") {
        return <ClipBenchPage project={project} clipId={rest[1]} />;
      }
      // `/browse/<project>/claim/<id>` -- ruling on one ledger entry against
      // the audio, rather than editing a window.
      if (rest.length === 2 && rest[0] === "claim") {
        return <ClaimBenchPage project={project} claimId={rest[1]} />;
      }
      // `/browse/<project>/takes` -- alternative renders of one part of the
      // cut, side by side, each judged like / maybe / no.
      if (rest.length === 1 && rest[0] === "takes") return <TakesPage project={project} />;
      return notFound();
    }
    case "sweep-report": {
      if (rest.length === 0) return <SweepProject project={project} />;
      return notFound();
    }
    default:
      // A kind the registry knows and this file does not. That is exactly the
      // state a half-added kind is in, so it says so instead of 404ing.
      return (
        <main className="deck-main flex-1 p-4">
          <p className="text-[12px] text-[var(--color-dim)]">
            <code className="font-mono">{project.kind}</code> is a registered kind with no view
            yet. Add one in <code className="font-mono">components/projects/</code>.
          </p>
        </main>
      );
  }
}