feat: improve upload flow (#240)

* feat: separate flow for folder and file uploads

* feat: add basic index document detection

* feat(wip): separate preview step

* fix: fix kb and mb units

* feat: add post upload summary, add some styling

* feat: upload flow

* fix: change element order and add conditional rendering

* refactor: remove unused variables for now

* fix: put back stamp creation to stamp page

* refactor: rework postage stamps and grid

* feat: add website and folder icons

* feat: add asset preview to download flow, add file icon

* feat: add basic design to postage stamp selection dialog

* feat: add web icon, shorten stamp in preview

* feat: extract swarm hash in download flow

* fix: extract swarmbutton and solve icon hover and focus color

* fix: always show buy button on stamp page

* refactor: downgrade

* refactor: speed up icon transition

* style: improve download buttons

* style: change [back to upload] icon

* style: add spacing before swarm gateway text

* style: post upload summary spacing

* refactor: drop verticalspacing and use box

* refactor: merge icons to one component

* refactor: use conditions instead of weird assignment

* docs: explain filter(x => x)

* refactor: generalize capacity

* refactor: avoid passing arrow functions

* refactor: get rid of PaperGridContainer and Container

* fix: fix hover color for postage stamps

* feat: add disabled and loading state to buttons

* fix: make drag and drop work for websites

* feat: handle folders and non existing hashes

* fix: provide empty default value to select to avoid console warning

* style: remove body2 font variants

* fix: remove typo

* feat: disable folder upload, add website upload

* fix: disable showPreviews to avoid flickering

* feat(temp): remove folder upload

* fix: remove stuck focus on buttons even after rendering different buttons

* style: merge hover and focus styles, fix safari text wrap issue

* style: remove dropbox outline in safari

src/components/Capacity.tsx

@@ -0,0 +1,22 @@
+import { ReactElement } from 'react'
+
+interface Props {
+  width: string
+  usage: number
+}
+
+export function Capacity({ width, usage }: Props): ReactElement {
+  const integerUsage = Math.round(usage * 100)
+  const used = integerUsage + '%'
+  const free = 100 - 2 - integerUsage + '%'
+
+  return (
+    <div style={{ display: 'flex', alignItems: 'center', height: '100%', width }}>
+      <div style={{ display: 'flex', height: '4px', width: '100%' }}>
+        <div style={{ width: used, background: '#dd7200' }} />
+        <div style={{ width: '2%' }} />
+        <div style={{ width: free, background: '#c9c9c9' }} />
+      </div>
+    </div>
+  )
+}