rewrote ImageRouter

- introduced UploadProvider interface
- rewrote all current UploadProviders

Signed-off-by: Philip Molares <philip.molares@udo.edu>
Signed-off-by: David Mehren <dmehren1@gmail.com>

lib/web/imageRouter/s3.ts

@@ -0,0 +1,59 @@
+import fs from 'fs'
+import path from 'path'
+import AWS from 'aws-sdk'
+
+import { config } from '../../config'
+// import { getImageMimeType } from '../../utils'
+import { logger } from '../../logger'
+import { UploadProvider } from './index'
+
+const awsConfig = new AWS.Config(config.s3)
+const s3 = new AWS.S3(awsConfig)
+
+const S3UploadProvider: UploadProvider = {
+  uploadImage: (imagePath, callback) => {
+    if (!imagePath) {
+      callback(new Error('Image path is missing or wrong'), undefined)
+      return
+    }
+
+    if (!callback || typeof callback !== 'function') {
+      logger.error('Callback has to be a function')
+      return
+    }
+
+    fs.readFile(imagePath, function (err, buffer) {
+      if (err) {
+        callback(new Error(err.message), undefined)
+        return
+      }
+      const params = {
+        Bucket: config.s3bucket,
+        Key: path.join('uploads', path.basename(imagePath)),
+        Body: buffer
+      }
+
+      // ToDo: This does not exist (anymore?)
+      // const mimeType = getImageMimeType(imagePath)
+      // if (mimeType) { params.ContentType = mimeType }
+
+      logger.debug(`S3 object parameters: ${JSON.stringify(params)}`)
+      s3.putObject(params, function (err, _) {
+        if (err) {
+          callback(new Error(err.message), undefined)
+          return
+        }
+
+        let s3Endpoint = 's3.amazonaws.com'
+        if (config.s3.endpoint) {
+          s3Endpoint = config.s3.endpoint
+        } else if (config.s3.region && config.s3.region !== 'us-east-1') {
+          s3Endpoint = `s3-${config.s3.region}.amazonaws.com`
+        }
+        callback(undefined, `https://${s3Endpoint}/${config.s3bucket}/${params.Key}`)
+      })
+    })
+  }
+}
+
+export { S3UploadProvider }