explainegy-nextjs/pages/api/categories/index.ts

import prisma, { CategoryWithIncludes } from "../../../lib/prisma";
import { Prisma } from "@prisma/client";
import { Category, Svg } from "@prisma/client";
import { ResponseError } from "../../../types/responseErrors";
import { formatTextToUrlName } from "../../../utils";
import { isValidText } from "../../../validators";

import type { NextApiRequest, NextApiResponse } from 'next'
import { CreateCategory } from "@/types/api";

export default async function handler(req: NextApiRequest, res: NextApiResponse) {
  if (req.method == "GET") {
    console.log("API get categories")
    await prisma.category.findMany().then((result: Category[]) => {
      if (result) {
        res.status(200).json(result)
      }
    }, (errorReason) => {
      console.log(errorReason);
      res.status(500).end(errorReason);
    })
  } else
    if (req.method == "POST") {
      console.log("API new category")
      const categoryData: CreateCategory = req.body;
      console.log(categoryData)

      if (!isValidText(categoryData.title)) {
        res.json({ target: "title", error: "Not a valid title" });
        return;
      }

      categoryData.svg.viewbox = categoryData.svg.viewbox.length > 1 ? categoryData.svg.viewbox : "";

      const newSvg: Prisma.SvgUncheckedCreateInput = {
        viewbox: categoryData.svg.viewbox,
        path: categoryData.svg.path
      }

      await prisma.svg
        .create({ data: newSvg })
        .then(
          async (createdSvg: Svg) => {
            const newCategory: Prisma.CategoryUncheckedCreateInput = {
              title: categoryData.title,
              name: formatTextToUrlName(categoryData.title),
              color: categoryData.color ?? "teal",
              svgId: createdSvg.id,
            }

            await prisma.category
              .create({
                data: newCategory,
                include: { svg: true, articles: true },
              })
              .then(
                (createdCategory: CategoryWithIncludes | null) => {
                  if (createdCategory) {
                    res.json({ success: true, data: createdCategory });
                  } else {
                    res.json({ error: true, message: "Could not create category" });
                  }
                },
                (errorReason) => {
                  console.log(errorReason)
                  if (errorReason.code === "P2002") {
                    res.json({ target: errorReason.meta.target[0], error: "Already exists" });
                  }
                }
              )
              .catch((err) => {
                console.error(err);
                res.status(500).end();
              });
          },
          (errorReason) => {
            res.status(500).end(errorReason);
          }
        )
        .catch((err) => {
          console.error(err);
          res.status(500).end();
        });
    }
}