Adding more flexible deploy script

script/s3-upload.js

@@ -0,0 +1,80 @@
+/* eslint-disable no-console */
+
+const path = require('path');
+const fs = require('fs');
+const colors = require('colors/safe');
+const readdir = require('recursive-readdir');
+const AWS = require('aws-sdk');
+const mime = require('mime-types');
+
+const s3 = new AWS.S3();
+const config = require(path.resolve(process.argv[2]));
+
+const configFor = path => {
+  const { match, ...conf } = config.paths.find(conf => conf.match.test(path)); // eslint-disable-line no-unused-vars
+  return {
+    ContentEncoding: mime.lookup(path) || 'application/octet-stream',
+    ...conf
+  };
+};
+
+const bucketContents = s3.listObjectsV2({
+  Bucket: config.bucket
+}).promise()
+  .then(result => {
+    return result.Contents.map(item => item.Key);
+  })
+  .catch(err => {
+    console.error(colors.red.bold('Failed to fetch bucket contents:'), err);
+    process.exit(1);
+  });
+
+const uploadDetails = readdir(config.deployFrom)
+  .then(paths => paths.map(p => {
+    const key = path.relative(config.deployFrom, p);
+    return {
+      Key: key,
+      Body: fs.createReadStream(p),
+      ...configFor(key)
+    };
+  }))
+  .catch(err => {
+    console.error(colors.red.bold('Error:'), err);
+    process.exit(1);
+  });
+
+Promise.all([bucketContents, uploadDetails]).then(([bucket, upload]) => {
+  const deleteKeys = bucket.filter(key => !upload.find(conf => key === conf.Key));
+
+  const uploadPromises = upload.map(params => {
+    console.log(`Starting upload for ${ params.Key }`);
+    return s3.upload({
+      Bucket: config.bucket,
+      ...params
+    }).promise()
+      .then(() => console.log(colors.green(`${ params.Key } successful`)))
+      .catch(err => {
+        console.error(colors.red.bold(`${ params.Key } failed`));
+        return Promise.reject(err);
+      });
+  });
+
+  return Promise.all(uploadPromises).then(() => {
+    console.log(`Deleting ${ deleteKeys.length } stale files`);
+    return s3.deleteObjects({
+      Bucket: config.bucket,
+      Delete: {
+        Objects: deleteKeys.map(key => ({ Key: key }))
+      }
+    }).promise()
+      .then(() => console.log(colors.green('Delete successful')))
+      .catch(err => {
+        console.error(colors.red.bold('Delete failed'));
+        return Promise.reject(err);
+      });
+  });
+})
+  .catch(err => {
+    console.error(colors.red.bold('Error:'), err);
+    process.exit(1);
+  });