const fs = require("fs");
const path = require("path");
const moment = require("moment");
const date = moment();

const uploadImage = (image, res, type) => {
  const maxSize = 15 * 1024 * 1024; // 15MB (example limit)

  if (image.size > maxSize) {
    res.status(500)
    throw new Error("Image file size exceeds the limit")
  }
  let imageName =
    date.format("YYYY-MM-DD") +
    "-Img-" +
    Math.floor(Math.random() * 900) +
    100 +
    image.name;

  let saveToPath
  let preFile

  switch (type) {
    case "1":
      // Specify the save location
      saveToPath = path.join(__dirname, "..", "Videos", imageName);
      preFile = "/Videos/"
      break;

    case "2":
      // Specify the save location
      saveToPath = path.join(__dirname, "..", "uploads/blogs", imageName);
      preFile = "/uploads/blogs/"
      break;

    case "3":
      // Specify the save location
      saveToPath = path.join(__dirname, "..", "uploads/personal", imageName);
      preFile = "/uploads/personal/"
      break;

    default:
      // Specify the save location
      saveToPath = path.join(__dirname, "..", "uploads/none", imageName);
      preFile = "/uploads/none/"
      break;
  }

  fs.writeFile(saveToPath, image.data, (err) => {
    if (err) {
      console.error(err);
      res.status(500).json({ msg: "Error saving the image" });
    } else {
      res.status(201).json({ url: `${preFile}${imageName}` });
    }
  });
};

const uploadImages = (images, res, type) => {
  const maxSize = 15 * 1024 * 1024; // 15MB (example limit)
  const imageUrls = [];

  if (!Array.isArray(images)) {

    if (images.size > maxSize) {
      res.status(500)
      throw new Error("Image file size exceeds the limit")
    }

    let imageName =
      date.format("YYYY-MM-DD") +
      "-Img-" +
      Math.floor(Math.random() * 900) +
      100 +
      images.name;

    let saveToPath
    let preFile

    switch (type) {
      case "1":
        // Specify the save location
        saveToPath = path.join(__dirname, "..", "Videos", imageName);
        preFile = "/Videos/"
        break;

      case "2":
        // Specify the save location
        saveToPath = path.join(__dirname, "..", "uploads/blogs", imageName);
        preFile = "/uploads/blogs/"
        break;

      case "3":
        // Specify the save location
        saveToPath = path.join(__dirname, "..", "uploads/personal", imageName);
        preFile = "/uploads/personal/"
        break;

      default:
        // Specify the save location
        saveToPath = path.join(__dirname, "..", "uploads/none", imageName);
        preFile = "/uploads/none/"


        break;
    }

    fs.writeFile(saveToPath, images.data, (err) => {
      if (err) {
        console.error(err);
        res.status(500).json({ msg: "Error saving the image" });
      } else {
        imageUrls.push(`${preFile}${imageName}`)
        res.status(201).json({ urls: imageUrls });
      }
    });

  } else {
    images.forEach(async (image) => {
      if (image.size > maxSize) {
        res.status(400)
        throw new Error("Image file size exceeds the limit")
      }

      let imageName =
        date.format("YYYY-MM-DD") +
        "-Img-" +
        Math.floor(Math.random() * 900) +
        100 +
        image.name;

      let saveToPath
      let preFile


      switch (type) {
        case "1":
          // Specify the save location
          saveToPath = path.join(__dirname, "..", "Videos", imageName);
          preFile = "/Videos/"
          break;

        case "2":
          // Specify the save location
          saveToPath = path.join(__dirname, "..", "uploads/blogs", imageName);
          preFile = "/uploads/blogs/"
          break;

        case "3":
          // Specify the save location
          saveToPath = path.join(__dirname, "..", "uploads/personal", imageName);
          preFile = "/uploads/personal/"
          break;

        default:
          // Specify the save location
          saveToPath = path.join(__dirname, "..", "uploads/none", imageName);
          preFile = "/uploads/none/"


          break;
      }

      imageUrls.push(`${preFile}${imageName}`);

      fs.writeFile(saveToPath, image.data, (err) => {
        if (err) {
          console.log(err);
          res.status(500)
          throw new Error("Can't save images")
          okd = false
        }
      });
    });
    res.status(201).json({ urls: imageUrls });
  }

};

const deleteImage = (address, res) => {
  const addressOf = path.join(__dirname, "..", address);

  fs.unlink(addressOf, (err) => {
    if (err) {
      console.error("Error removing image:", err);
      return;
    }
  });
};

module.exports = {
  deleteImage,
  uploadImage,
  uploadImages,
};