for #167, moving contacts suggestions search logic to a separate module

1 files changed, 54 insertions, 0 deletions

diff --git a/service/pixelated/adapter/search/contacts.py b/service/pixelated/adapter/search/contacts.py
new file mode 100644
index 00000000..afef6ad0
--- /dev/null
+++ b/service/pixelated/adapter/search/contacts.py
@@ -0,0 +1,54 @@
+#
+# Copyright (c) 2014 ThoughtWorks, Inc.
+#
+# Pixelated is free software: you can redistribute it and/or modify
+# it under the terms of the GNU Affero General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# Pixelated is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU Affero General Public License for more details.
+#
+# You should have received a copy of the GNU Affero General Public License
+# along with Pixelated. If not, see <http://www.gnu.org/licenses/>.
+from email.utils import parseaddr
+from pixelated.support.functional import flatten
+from whoosh.qparser import QueryParser
+from whoosh import sorting
+from whoosh.query import Term
+
+
+def address_duplication_filter(contacts):
+    contacts_by_mail = dict()
+
+    for contact in contacts:
+        mail_address = extract_mail_address(contact)
+        current = contacts_by_mail.get(mail_address, '')
+        current = contact if len(contact) > len(current) else current
+        contacts_by_mail[mail_address] = current
+    return contacts_by_mail.values()
+
+
+def extract_mail_address(text):
+    return parseaddr(text)[1]
+
+
+def contacts_suggestions(query, searcher):
+    if query:
+        return address_duplication_filter(search_addresses(searcher, query))
+    return []
+
+
+def search_addresses(searcher, query):
+    restrict_q = Term("tag", "drafts") | Term("tag", "trash")
+    results = []
+    for field in ['to', 'cc', 'bcc', 'sender']:
+        query_parser = QueryParser(field, searcher.schema)
+        results.append(searcher.search(query_parser.parse("*%s*" % query),
+                                       limit=None,
+                                       mask=restrict_q,
+                                       groupedby=sorting.FieldFacet(field,
+                                                                    allow_overlap=True)).groups())
+    return flatten(results)