// components/ProcessActions.tsx
// Client component that drives the Process / Archive / Reopen buttons
// for a single onboarding submission. Optimistically disables itself
// while the API call is in flight and revalidates the page on success.

"use client";

import { useState } from "react";
import { useRouter } from "next/navigation";

interface Props {
  id: string;
  status: "draft" | "submitted" | "processing" | "processed" | "rejected";
  directorCount: number;
  hasDuplicates: boolean;
}

export default function ProcessActions({
  id,
  status,
  directorCount,
  hasDuplicates,
}: Props) {
  const router = useRouter();
  const [busy, setBusy] = useState<"process" | "archive" | "reopen" | null>(null);
  const [error, setError] = useState<string | null>(null);

  async function call(action: "process" | "archive" | "reopen") {
    setBusy(action);
    setError(null);
    try {
      const res = await fetch(`/api/onboarding/${id}/${action}`, { method: "POST" });
      if (!res.ok) {
        const body = await res.json().catch(() => ({ error: "Unknown error" }));
        throw new Error(body.error ?? `Request failed (${res.status})`);
      }
      router.refresh();
    } catch (err) {
      setError(err instanceof Error ? err.message : "Action failed");
    } finally {
      setBusy(null);
    }
  }

  const isDraft = status === "draft";
  const isSubmitted = status === "submitted";
  const isProcessed = status === "processed";
  const isArchived = status === "rejected";
  const canProcess = isSubmitted && directorCount > 0;

  return (
    <div className="bg-surface border border-border rounded-lg p-5 space-y-3" data-od-id="process-actions">
      <h2 className="text-sm font-semibold text-fg uppercase tracking-wider">Actions</h2>

      {hasDuplicates && canProcess ? (
        <p className="text-xs text-warn font-medium bg-[color-mix(in_oklch,var(--warn)_10%,white)] border border-[color:var(--warn)]/30 rounded-md p-2">
          Duplicate IDs detected — review before processing.
        </p>
      ) : null}

      {error ? (
        <p className="text-xs text-danger font-medium bg-[color-mix(in_oklch,var(--danger)_8%,white)] border border-[color:var(--danger)]/30 rounded-md p-2">
          {error}
        </p>
      ) : null}

      {(isSubmitted || isDraft) ? (
        <button
          type="button"
          onClick={() => call("process")}
          disabled={!canProcess || busy !== null}
          className="w-full px-4 py-2.5 rounded-md bg-accent text-accent-on text-sm font-bold hover:bg-accent-hover disabled:opacity-50 disabled:cursor-not-allowed transition-colors"
        >
          {busy === "process" ? "Processing…" : `Create ${directorCount} director record${directorCount === 1 ? "" : "s"}`}
        </button>
      ) : null}

      {isProcessed ? (
        <button
          type="button"
          onClick={() => call("reopen")}
          disabled={busy !== null}
          className="w-full px-4 py-2.5 rounded-md border border-border text-sm font-semibold text-fg hover:bg-surface-warm disabled:opacity-50 transition-colors"
        >
          {busy === "reopen" ? "Reopening…" : "Reopen submission"}
        </button>
      ) : null}

      {(isSubmitted || isProcessed || isDraft) && !isArchived ? (
        <button
          type="button"
          onClick={() => call("archive")}
          disabled={busy !== null}
          className="w-full px-4 py-2.5 rounded-md border border-border text-sm font-semibold text-muted hover:text-danger hover:border-danger disabled:opacity-50 transition-colors"
        >
          {busy === "archive" ? "Archiving…" : "Archive"}
        </button>
      ) : null}

      {isArchived ? (
        <p className="text-xs text-muted italic">This submission has been archived.</p>
      ) : null}
    </div>
  );
}