import { z } from 'zod';
import type { KazzleTool } from '@kazzle/app/tools';

export const SaveBookmarkInput = z.object({
  url: z.string().url().describe('URL to save.'),
  title: z.string().optional().describe('Optional human-readable title.'),
}).strict();

const saveBookmarkTarget = {
  type: 'app',
  component: 'api',
  path: '/tools/save-bookmark',
  method: 'POST',
  body: '${input}',
} as const;

export const tools = [
  {
    name: 'save_bookmark',
    displayName: 'Save bookmark',
    description: 'Save a bookmark URL and return a confirmation.',
    input: SaveBookmarkInput,
    target: saveBookmarkTarget,
  },
] as const satisfies readonly KazzleTool[];

type RequestSpec = {
  method: 'GET' | 'POST' | 'PUT' | 'PATCH' | 'DELETE';
  query?: Record<string, string>;
  headers?: Record<string, string>;
  body?: unknown;
};

{ "...": "the typed input" }

{ "content": "...", "markdown": "...", "embedUrl": "https://..." }

if (req.method === 'POST' && new URL(req.url).pathname === '/tools/save-bookmark') {
  const input = await req.json();
  // ...do the work...
  return Response.json({ content: `Saved ${input.title}` });
}

import { toolContext, isThreadToolInvocation } from '@kazzle/app/tools';

const context = toolContext(req);
if (!isThreadToolInvocation(context)) {
  return Response.json(
    { code: 'connect_required', error: 'Gmail must be connected before this tool can run.' },
    { status: 409 },
  );
}

return Response.json({
  type: 'action_required',
  title: 'Connect Gmail',
  description: 'Connect Gmail before Kazzle can search messages.',
  // Optional: only this device may run the gated buttons
  // assignee: { computerId: '<from computer { list: {} }>' },
  elements: [
    {
      type: 'button',
      id: 'connect',
      label: 'Connect Gmail',
      variant: 'primary',
      input: { scope: 'gmail.readonly' },
      target: {
        type: 'app',
        component: 'api',
        path: '/oauth/start',
        method: 'POST',
        body: '${input}',
      },
    },
  ],
});

// A tool that needs the user to connect their account:
return Response.json({
  content: "Gmail isn't connected yet — the user needs to connect it.",
  embedUrl: `${process.env.KAZZLE_APP_COMPONENT_URL}/connect?token=${identity}`,
});

// inside the embedded page
parent.postMessage({ __kazzle_height: document.body.scrollHeight }, '*');