import { getCategories, getCategoriesCached } from '$lib/server/db/category.js';
import { createPost } from '$lib/server/db/post.js';
import { runIfError, runIfSuccess } from '$lib/status.js';
import { errorToFail } from '$lib/status.server.js';
import { parseIntNull } from '$lib/util.js';
import { fail, redirect } from '@sveltejs/kit';

export async function load({ cookies }) {
  if (!cookies.get('token')) {
    redirect(302, '/register');
  }

  const categories = await getCategories();

  return {
    categories: Array(...categories.values())
  };
}

/** @type {import('@sveltejs/kit').Action} */
async function POST({ request, cookies }) {
  const userToken = cookies.get('token');

  if (!userToken) {
    return fail(401, {
      error: true,
      title: 'Invalid session',
      msg: 'Need to be logged in to perform this operation',
    });
  }

  const data = await request.formData();
  const categoryId = parseIntNull(data.get('category')?.toString());
  const name = data.get('name')?.toString();
  const content = data.get('content')?.toString();

  if (!categoryId) {
    return fail(400, {
      error: true,
      title: 'Bad data',
      msg: `Invalid category ID ${categoryId}`,
    });
  }

  if (!name || !content) {
    return fail(400, {
      error: true,
      title: 'Bad data',
      msg: 'Name and Content must have content',
    });
  }

  const category = (await getCategoriesCached([categoryId])).get(categoryId);

  if (!category) {
    return fail(400, {
      error: true,
      title: 'Bad data',
      msg: `Invalid category ID ${categoryId}`,
    });
  }

  const result = await createPost(userToken, category, name, content);
  
  runIfSuccess(result, (success) => {
    redirect(303, `/posts/${success.result}`);
  });

  return runIfError(result, (error) => {
    return errorToFail(error);
  });
}

export const actions = {
  default: POST,
};