Open the epub import card and load a dropped file

bindery/static/js/stories.js

@@ -106,7 +106,7 @@ function libraryImport(config) {
 
 // Upload a FanFicFare ePub. Bindery stores its chapters as if it had downloaded
 // them, so chapters that the site stubbed or removed stay in the book.
-export function epubImport(storyId) {
+export function epubImport(storyId, title = 'Import an ePub file') {
   let check = true;
   const file = h('input', { type: 'file', accept: '.epub,application/epub+zip', 'aria-label': 'Epub file' });
   const upload = button(
@@ -132,9 +132,22 @@ export function epubImport(storyId) {
       'Chapters that Bindery has already keep their stored text.'
     : 'Starts tracking the story of an ePub made by FanFicFare, with all of its chapters. ' +
       'If Bindery tracks the story already, it adds the chapters that it does not have.';
-  return h(
-    'div',
-    {},
+  const card = h(
+    'details',
+    {
+      class: 'card',
+      // A file dropped on the closed card opens it and puts the file in the picker, ready to import.
+      ondragover: (e) => e.preventDefault(),
+      ondrop: (e) => {
+        e.preventDefault();
+        const dropped = e.dataTransfer?.files;
+        if (dropped && dropped.length) {
+          file.files = dropped;
+          card.open = true;
+        }
+      },
+    },
+    h('summary', {}, h('h2', {}, title)),
     h('p', { class: 'hint' }, hint, ' The next update adds the chapters that the site published after the ePub.'),
     h(
       'div',
@@ -144,6 +157,7 @@ export function epubImport(storyId) {
       h('label', {}, checkbox(true, (on) => (check = on)), ' Check the site for new chapters after import'),
     ),
   );
+  return card;
 }
 
 function storyRow(s) {
@@ -268,7 +282,7 @@ export function storiesPage(main, _params, config) {
       table,
     ),
     h('details', { class: 'card', open: true }, h('summary', {}, h('h2', {}, 'Jobs')), jobs.el),
-    h('details', { class: 'card' }, h('summary', {}, h('h2', {}, 'Import an epub file')), epubImport()),
+    epubImport(),
     h('details', { class: 'card' }, h('summary', {}, h('h2', {}, 'Import from the library')), libraryImport(config)),
   );
 

bindery/static/js/story.js

@@ -613,7 +613,7 @@ export function storyPage(main, { storyId }, config) {
       ),
       chapters,
     ),
-    h('details', { class: 'card' }, h('summary', {}, h('h2', {}, 'Import chapters from an epub')), epubImport(id)),
+    epubImport(id, 'Import chapters from an ePub'),
     h('details', { class: 'card', open: true }, h('summary', {}, h('h2', {}, 'Recent jobs')), jobs.el),
     h(
       'details',

tests/js/flows.test.mjs

@@ -144,6 +144,16 @@ for (const storyId of [undefined, 1]) {
   });
 }
 
+test('dropping a file on a closed epub import card opens it and fills the file field', () => {
+  const root = epubImport(1);
+  assert.equal(root.open, undefined);
+  const file = field(root, 'Epub file');
+  const book = new File(['book'], 'story.epub', { type: 'application/epub+zip' });
+  root.listeners.drop({ preventDefault() {}, dataTransfer: { files: [book] } });
+  assert.equal(root.open, true);
+  assert.equal(file.files[0], book);
+});
+
 test('library import sends only selected books and handles an empty candidate list', async () => {
   await mountStories();
   api.on('GET', 'library/candidates', []);