Allow enabling indexing from the server

src/calibre/srv/errors.py

@@ -4,7 +4,7 @@
 __license__ = 'GPL v3'
 __copyright__ = '2015, Kovid Goyal <kovid at kovidgoyal.net>'
 
-from polyglot import http_client
+import http.client as http_client
 
 
 class JobQueueFull(Exception):

src/calibre/srv/fts.py

@@ -72,6 +72,20 @@ def fts_reindex(ctx, rd):
     return ''
 
 
+@endpoint('/fts/indexing', needs_db_write=True, methods=('POST',))
+def fts_indexing(ctx, rd):
+    data = rd.request_body_file.read()
+    try:
+        enable = json.loads(data)
+    except Exception:
+        raise HTTPBadRequest('Invalid boolean')
+    if not isinstance(enable, bool):
+        raise HTTPBadRequest('Invalid boolean')
+    db = get_library_data(ctx, rd)[0]
+    db.enable_fts(enable)
+    return ''
+
+
 @endpoint('/fts/snippets/{book_ids}', postprocess=json)
 def fts_snippets(ctx, rd, book_ids):
     '''

src/polyglot/http_client.py

@@ -8,9 +8,10 @@ from http.client import (responses, HTTPConnection, HTTPSConnection,
         NOT_FOUND, NOT_IMPLEMENTED, NOT_MODIFIED, OK, PARTIAL_CONTENT,
         PRECONDITION_FAILED, REQUEST_ENTITY_TOO_LARGE, REQUEST_URI_TOO_LONG,
         REQUESTED_RANGE_NOT_SATISFIABLE, REQUEST_TIMEOUT, SEE_OTHER,
-        SERVICE_UNAVAILABLE, UNAUTHORIZED, _CS_IDLE, _CS_REQ_SENT)
+        SERVICE_UNAVAILABLE, UNAUTHORIZED, _CS_IDLE, _CS_REQ_SENT, PRECONDITION_REQUIRED, UNPROCESSABLE_ENTITY)
 
 if False:
     responses, HTTPConnection, HTTPSConnection, BAD_REQUEST, FOUND, FORBIDDEN, HTTP_VERSION_NOT_SUPPORTED, INTERNAL_SERVER_ERROR, METHOD_NOT_ALLOWED
     MOVED_PERMANENTLY, NOT_FOUND, NOT_IMPLEMENTED, NOT_MODIFIED, OK, PARTIAL_CONTENT, PRECONDITION_FAILED, REQUEST_ENTITY_TOO_LARGE, REQUEST_URI_TOO_LONG
     REQUESTED_RANGE_NOT_SATISFIABLE, REQUEST_TIMEOUT, SEE_OTHER, SERVICE_UNAVAILABLE, UNAUTHORIZED, _CS_IDLE, _CS_REQ_SENT
+    PRECONDITION_REQUIRED, UNPROCESSABLE_ENTITY

src/pyj/book_list/fts.pyj

@@ -53,13 +53,35 @@ def make_new_fts_query(q):
     xhr.send()
 
 
+def enable_indexing():
+    def on_response(end_type, xhr, ev):
+        if end_type is 'abort' or not showing_search_panel():
+            return
+        if end_type is not 'load':
+            if xhr.status is 403:
+                return error_dialog(_('Permission denied'), _(
+                    'You do not have permission to enable indexing. Only logged in users with write permission are allowed.'), xhr.error_html)
+            return error_dialog(_('Failed to enable indexing'), _('Enabling indexing failed. Click "Show details" for more information.'), xhr.error_html)
+        info_dialog(_('Indexing enabled'), _('Indexing of this library has been enabled. Depending on library size it can take a long time to index all books.'))
+    ajax_send(f'fts/indexing', True, on_response)
+
+
+def report_fts_not_enabled():
+    clear_to_waiting_for_results(_('No matches found'))
+    question_dialog(_('Full text searching disabled'), _(
+        'Full text search indexing has not been enabled for this library. Once enabled, indexing'
+        ' will take some time to complete after which searching will work. Enable indexing?'),
+        def (yes):
+            if yes:
+                enable_indexing()
+    )
+
 def on_initial_fts_fetched(end_type, xhr, ev):
     if end_type is 'abort' or not showing_search_panel():
         return
     if end_type is not 'load':
         if xhr.status is 428:
-            # TODO: Implement FTS not enabled
-            pass
+            return report_fts_not_enabled()
         return error_dialog(_('Failed to search'), _('The search failed. Click "Show details" for more information.'), xhr.error_html)
     try:
         results = JSON.parse(xhr.responseText)