Add CSP file uploads

js/lib/upload.js

@@ -0,0 +1,64 @@
+import Azure from 'azure-storage'
+
+class AzureUploader {
+  constructor(sasToken) {
+    this.sasToken = sasToken.token
+  }
+
+  async upload(file, objectName) {
+    const blobService = Azure.createBlobServiceWithSas(
+      'https://atat.blob.core.windows.net',
+      this.sasToken
+    )
+    const fileReader = new FileReader()
+    const options = {
+      contentSettings: {
+        contentType: 'application/pdf',
+      },
+      metadata: {
+        filename: file.name,
+      },
+    }
+
+    return new Promise((resolve, reject) => {
+      fileReader.addEventListener('load', function(f) {
+        blobService.createBlockBlobFromText(
+          'task-order-pdfs',
+          `${objectName}.pdf`,
+          f.target.result,
+          options,
+          function(err, result) {
+            if (err) {
+              reject(err)
+            } else {
+              resolve(result)
+            }
+          }
+        )
+      })
+      fileReader.readAsText(file)
+    })
+  }
+}
+
+class AwsUploader {
+  constructor(presignedPost) {
+    this.presignedPost = presignedPost
+  }
+
+  async upload(file, objectName) {
+    const form = new FormData()
+    Object.entries(this.presignedPost.fields).forEach(([k, v]) => {
+      form.append(k, v)
+    })
+    form.append('file', file)
+    form.set('x-amz-meta-filename', file.name)
+
+    return fetch(this.presignedPost.url, {
+      method: 'POST',
+      body: form,
+    })
+  }
+}
+
+export const buildUploader = token => new AzureUploader(token)