first commit

helper/resizer.js

@@ -0,0 +1,65 @@
+const sharp = require('sharp');
+const fs = require('fs');
+
+const resizer = async (req, res) => {
+  try {
+    const { width, height, quality, format } = req.query;
+    const { filename } = req.params;
+
+    if (width) {
+      if (parseInt(width) > 5000) {
+        return res.status(400).json({
+          success: false,
+          message: 'Error. Width must be <=5000',
+        });
+      }
+    }
+
+    if (height) {
+      if (parseInt(height) > 5000) {
+        return res.status(400).json({
+          success: false,
+          message: 'Error. Height must be <=5000',
+        });
+      }
+    }
+
+    if (quality) {
+      if (parseInt(quality) > 100) {
+        return res.status(400).json({
+          success: false,
+          message: 'Error. Quality must be <=100',
+        });
+      }
+    }
+
+    const image = sharp(`./public/${filename}`);
+    let formatImage = (await image.metadata()).format;
+    formatImage = format || formatImage === 'svg' ? 'png' : formatImage;
+    const widthImage = width ? parseInt(width) : (await image.metadata()).width;
+    const heightImage = height
+      ? parseInt(height)
+      : (await image.metadata()).height;
+
+    const resizedImage = await image
+      .resize(widthImage, heightImage)
+      .toFormat(formatImage, {
+        quality: quality ? parseInt(quality) : 100,
+      })
+      .withMetadata()
+      .toBuffer();
+
+    res.setHeader('content-type', 'image');
+    res.send(resizedImage);
+
+    fs.unlinkSync('public/' + filename);
+  } catch (error) {
+    res.setHeader('content-type', 'application/json');
+    res.status(500).json({
+      success: false,
+      message: 'Internal server error',
+    });
+  }
+};
+
+module.exports = resizer;