96 lines
2.3 KiB
JavaScript
96 lines
2.3 KiB
JavaScript
const sharp = require("sharp");
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const fs = require("fs");
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const axios = require("axios");
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const resizer = async (req, res) => {
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const { width, height, quality, format } = req.query;
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const { filename } = req.params;
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const imageUrl = req.url.startsWith("/image/resize/")
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? req.url.slice(14)
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: "";
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try {
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let bufferImage;
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if (imageUrl) {
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bufferImage = await imageUrlToBuffer(imageUrl);
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}
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if (width) {
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if (parseInt(width) > 5000) {
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return res.status(400).json({
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success: false,
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message: "Error. Width must be <=5000",
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});
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}
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}
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if (height) {
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if (parseInt(height) > 5000) {
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return res.status(400).json({
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success: false,
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message: "Error. Height must be <=5000",
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});
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}
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}
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if (quality) {
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if (parseInt(quality) > 100) {
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return res.status(400).json({
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success: false,
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message: "Error. Quality must be <=100",
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});
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}
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}
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const image = sharp(bufferImage || `./public/${filename}`);
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let formatImage = (await image.metadata()).format;
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formatImage =
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format === "svg" || formatImage === "svg" ? "png" : format || formatImage;
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const widthImage = width ? parseInt(width) : (await image.metadata()).width;
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const heightImage = height
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? parseInt(height)
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: (await image.metadata()).height;
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const resizedImage = await image
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.resize(widthImage, heightImage)
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.toFormat(formatImage, {
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quality: quality ? parseInt(quality) : 100,
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})
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.withMetadata()
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.toBuffer();
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res.setHeader("content-type", "image");
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res.send(resizedImage);
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} catch (error) {
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res.setHeader("content-type", "application/json");
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res.status(500).json({
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success: false,
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message: error?.message || "Internal server error",
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});
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} finally {
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if (filename) {
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fs.unlinkSync("public/" + filename);
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}
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}
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};
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async function imageUrlToBuffer(imageUrl) {
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try {
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const response = await axios.get(imageUrl, { responseType: "arraybuffer" });
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if (response.status !== 200) {
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throw new Error(`HTTP error! Status: ${response.status}`);
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}
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const buffer = Buffer.from(response.data);
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return buffer;
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} catch (error) {
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throw error;
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}
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}
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module.exports = resizer;
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