cat shelter2.0

const url = require("url");
const fs = require("fs");
const qs = require("querystring");
const path = require("path");
const formidable = require("formidable");
const cats = require("../data/cats.json");

module.exports = (req, res) => {
  const pathname = url.parse(req.url).pathname;

  if (pathname === "/cats/add-cat" && req.method === "GET") {
    let filePath = path.normalize(path.join(__dirname, "../views/addCat.html"));

    fs.readFile(filePath, "utf-8", (err, data) => {
      if (err) {
        console.log(err);
        res.writeHead(404, {
          "Content-Type": "text/plain",
        });

        res.write("404 not found :(");
        res.end();
        return;
      }

      fs.readFile("./data/breeds.json", "utf-8", (err, breedsData) => {
        if (err) {
          console.log(err);
          res.writeHead(500, {
            "Content-Type": "text/plain",
          });

          res.write("Internal server error");
          res.end();
          return;
        }

        const breeds = JSON.parse(breedsData);
        const breedOptions = breeds
          .map((breed) => `<option value="${breed}">${breed}</option>`)
          .join("\n");

        const finalHtml = data.replace("{{catBreeds}}", breedOptions);

        res.writeHead(200, {
          "Content-Type": "text/html",
        });

        res.write(finalHtml);
        res.end();
      });
    });
  } else if (pathname === "/cats/add-breed" && req.method === "GET") {
    let filePath = path.normalize(
      path.join(__dirname, "../views/addBreed.html")
    );

    fs.readFile(filePath, (err, data) => {
      if (err) {
        console.log(err);
        res.writeHead(404, {
          "Content-Type": "text/plain",
        });

        res.write("404 not found :(");
        res.end();
        return;
      }

      res.writeHead(200, {
        "Content-Type": "text/html",
      });

      res.write(data);
      res.end();
    });
  } else if (pathname === "/cats/add-cat" && req.method === "POST") {
    let form = new formidable.IncomingForm();
    form.uploadDir = "./content/images";
    form.keepExtensions = true;

    form.parse(req, (err, fields, files) => {
      if (err) {
        console.error(err);
        res.writeHead(500, { "Content-Type": "text/plain" });
        res.write("Error processing form data");
        res.end();
        return;
      }

      let oldPath = files.upload.filepath;
      let newPath = path.normalize(
        path.join(
          __dirname,
          "../content/images/",
          files.upload.originalFilename
        )
      );

      fs.rename(oldPath, newPath, (err) => {
        if (err) throw err;

        const newCat = {
          id: cats.length + 1,
          name: fields.name,
          description: fields.description,
          breed: fields.breed,
          image: files.upload.originalFilename,
        };

        cats.push(newCat);

        fs.writeFile(
          "./data/cats.json",
          JSON.stringify(cats, null, 2),
          "utf-8",
          (err) => {
            if (err) {
              console.error(err);
              res.writeHead(500, { "Content-Type": "text/plain" });
              res.write("Failed to save the new cat");
              res.end();
              return;
            }

            console.log("The cat was added successfully!");
            res.writeHead(302, { location: "/" });
          }
        );
      });
    });
  } else if (pathname === "/cats/add-breed" && req.method === "POST") {
    let filePath = path.normalize(path.join(__dirname, "../data/breeds.json"));
    let formData = "";

    req.on("data", (data) => {
      formData += data;
    });

    req.on("end", () => {
      let body = qs.parse(formData);

      fs.readFile(filePath, (err, data) => {
        if (err) {
          throw err;
        }

        let breeds = JSON.parse(data);
        breeds.push(body.breed);
        let json = JSON.stringify(breeds);

        fs.writeFile(filePath, json, "utf-8", () =>
          console.log("The breed was uploaded successfully!")
        );
      });

      res.writeHead(302, { location: "/" });
      res.end();
    });
  } else {
    true;
  }
};