import type { RequestHandler } from "./$types";
import { serialize } from "object-to-formdata";
import { validateData } from "$lib/utils";
import {
  createCommentTextSchema,
  createCommentImageSchema,
} from "$lib/schemas";
import { error } from "@sveltejs/kit";
//import sharp from 'sharp';
//import { marked } from 'marked';

/*
export const config = {
  runtime: 'nodejs20.x',
};
*/

/*
function removeDuplicateClasses(str) {
  return str.replace(/class="([^"]*)"/g, (match, classAttr) => {
      return `class="${[...new Set(classAttr.split(' '))].join(' ')}"`;
  });
}

function addClassesToHtml(htmlString) {
  // Helper function to add a class to a specific tag
  function addClassToTag(tag, className) {
      // Add class if the tag doesn't already have a class attribute
      const regex = new RegExp(`<${tag}(?![^>]*\\bclass=)([^>]*)>`, 'g');
      htmlString = htmlString.replace(regex, `<${tag} class="${className}"$1>`);

      // Append the new class to tags that already have a class attribute, ensuring no duplicates
      const regexWithClass = new RegExp(`(<${tag}[^>]*\\bclass=["'][^"']*)(?!.*\\b${className}\\b)([^"']*)["']`, 'g');
      htmlString = htmlString.replace(regexWithClass, `$1 ${className}$2"`);
  }

  // Add classes to headings
  addClassToTag('h1', 'text-lg');
  addClassToTag('h2', 'text-lg');
  addClassToTag('h3', 'text-lg');
  addClassToTag('h4', 'text-lg');
  addClassToTag('h5', 'text-lg');
  addClassToTag('h6', 'text-lg');

  // Add classes to anchor tags
  addClassToTag('a', 'text-blue-400 hover:text-white underline');

  // Add classes to ordered lists
  addClassToTag('ol', 'list-decimal ml-10 text-sm');

  // Add classes to unordered lists
  addClassToTag('ul', 'list-disc ml-10 text-sm -mt-5');

  // Add classes to blockquotes and their paragraphs
  function addClassToBlockquote() {
      // Add class to blockquote
      htmlString = htmlString.replace(
          /<blockquote/g,
          '<blockquote class="pl-4 pr-4 rounded-lg bg-[#323232]"'
      );

      // Add class to p inside blockquote
      htmlString = htmlString.replace(
          /<blockquote([^>]*)>\s*<p/g,
          `<blockquote$1>\n<p class="text-sm font-medium leading-relaxed text-white"`
      );
  }

  addClassToBlockquote();

  // Remove duplicate classes after all modifications
  htmlString = removeDuplicateClasses(htmlString);

  return htmlString;
}

*/

export const POST = (async ({ request, locals }) => {
  let output = "error";

  const body = await request.formData();

  if (body?.get("comment") === "undefined") {
    body?.delete("comment");
    body?.append("comment", "");
  }

  if (body?.get("reply") === null) {
    body?.delete("reply");
    body?.append("reply", "");
  }

  const { formData, errors } = await validateData(
    body,
    body?.get("image")?.length === 0
      ? createCommentTextSchema
      : createCommentImageSchema,
  );

  if (errors) {
    return new Response(JSON.stringify(output));
  }
  //formData.comment = addClassesToHtml(marked(formData?.comment))

  /*
  if (formData?.image?.type?.includes('image'))
		{

			try {
				// image optimization before storing into the database
				const image = formData?.image;


				const imageBuffer = await image?.arrayBuffer();
				const imageBufferArray = new Uint8Array(imageBuffer);

				const optimizedImageBuffer = await sharp(imageBufferArray)
				.resize({
				width: 800,
				height: 1000,
				fit: sharp.fit.inside, // Maintain aspect ratio and fit within the specified dimensions
				withoutEnlargement: true, // Do not upscale the image if it's smaller than the specified dimensions
				})
				.jpeg({ quality: 50 }) // Example: Convert the image to JPEG format with 50% quality
				.toBuffer();

				formData.image = new File([optimizedImageBuffer], image.name, {
					type: image.type,
					lastModified: image.lastModified,
				});

			} catch(err) {
				console.log('Error: ', err);
				error(err.status, err.message);
			}
		}
    */

  //Each comment gives the user +1 Karma points

  await locals.pb.collection("users").update(locals?.user?.id, {
    "karma+": 1,
  });

  let newComment;
  try {
    newComment = await locals.pb
      .collection("comments")
      .create(serialize(formData), {
        expand: "user,alreadyVoted(comment)",
        fields:
          "*,expand.user,expand.alreadyVoted(comment).user,expand.alreadyVoted(comment).type",
      });

    let postId = formData.post;
    const opPost = await locals.pb.collection("posts").getOne(postId);
    //create new record for notifications collections
    if (locals?.user?.id !== opPost?.user) {
      let formDataNotifications = new FormData();
      formDataNotifications.append("opUser", opPost?.user);
      formDataNotifications.append("user", formData?.user);
      formDataNotifications.append("post", postId);
      formDataNotifications.append("comment", newComment?.id);
      formDataNotifications.append("notifyType", "comment");

      await locals.pb.collection("notifications").create(formDataNotifications);
    }

    let formDataAlreadyVoted = new FormData();
    formDataAlreadyVoted.append("comment", newComment?.id);
    formDataAlreadyVoted.append("user", newComment?.user);
    formDataAlreadyVoted.append("type", "upvote");
    //console.log(formDataAlreadyVoted)
    await locals.pb.collection("alreadyVoted").create(formDataAlreadyVoted);

    //User always upvotes their comment in the intial state
    await locals.pb.collection("comments").update(newComment?.id, {
      "upvote+": 1,
    });

    output = "success";
  } catch (err) {
    console.log("Error: ", err);
    error(err.status, err.message);
  }

  return new Response(JSON.stringify([output, newComment]));
}) satisfies RequestHandler;