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[wolnelektury.git] / apps / search / views.py
diff --git a/apps/search/views.py b/apps/search/views.py
index fc14b06..de2337f 100644 (file)
--- a/apps/search/views.py
+++ b/apps/search/views.py
@@ -1,31 +1,206 @@
+# -*- coding: utf-8 -*-
 
 
-
+from django.conf import settings
 from django.shortcuts import render_to_response, get_object_or_404
 from django.template import RequestContext
 from django.contrib.auth.decorators import login_required
 from django.views.decorators import cache
 from django.shortcuts import render_to_response, get_object_or_404
 from django.template import RequestContext
 from django.contrib.auth.decorators import login_required
 from django.views.decorators import cache
+from django.http import HttpResponse, HttpResponseRedirect, Http404, HttpResponsePermanentRedirect
+from django.utils.translation import ugettext as _
+
+from catalogue.utils import split_tags
+from catalogue.models import Book, Tag, Fragment
+from catalogue.fields import dumps
+from catalogue.views import JSONResponse
+from search import Search, JVM, SearchResult
+from lucene import StringReader
+from suggest.forms import PublishingSuggestForm
+import re
+import enchant
+
+dictionary = enchant.Dict('pl_PL')
+
+
+def match_word_re(word):
+    if 'sqlite' in settings.DATABASES['default']['ENGINE']:
+        return r"\b%s\b" % word
+    elif 'mysql' in settings.DATABASES['default']['ENGINE']:
+        return "[[:<:]]%s[[:>:]]" % word
+
+
+def did_you_mean(query, tokens):
+    change = {}
+    for t in tokens:
+        authors = Tag.objects.filter(category='author', name__iregex=match_word_re(t))
+        if len(authors) > 0:
+            continue
+
+        if not dictionary.check(t):
+            try:
+                change_to = dictionary.suggest(t)[0].lower()
+                if change_to != t.lower():
+                    change[t] = change_to
+            except IndexError:
+                pass
+
+    if change == {}:
+        return None
+
+    for frm, to in change.items():
+        query = query.replace(frm, to)
+
+    return query
+
+
+def hint(request):
+    prefix = request.GET.get('term', '')
+    if len(prefix) < 2:
+        return JSONResponse([])
+    JVM.attachCurrentThread()
+    s = Search()
+
+    hint = s.hint()
+    try:
+        tags = request.GET.get('tags', '')
+        hint.tags(Tag.get_tag_list(tags))
+    except:
+        pass
+
+    # tagi beda ograniczac tutaj
+    # ale tagi moga byc na ksiazce i na fragmentach
+    # jezeli tagi dot tylko ksiazki, to wazne zeby te nowe byly w tej samej ksiazce
+    # jesli zas dotycza themes, to wazne, zeby byly w tym samym fragmencie.
+
+    tags = s.hint_tags(prefix, pdcounter=True)
+    books = s.hint_books(prefix)
 
 
-from catalogue.utils import get_random_hash
-from catalogue.models import Book, Tag
-from catalogue import forms
-from search import MultiSearch, JVM, SearchResult
+    # TODO DODAC TU HINTY
+
+    return JSONResponse(
+        [{'label': t.name,
+          'category': _(t.category),
+          'id': t.id,
+          'url': t.get_absolute_url()}
+          for t in tags] + \
+          [{'label': b.title,
+            'category': _('book'),
+            'id': b.id,
+            'url': b.get_absolute_url()}
+            for b in books])
 
 
 def main(request):
     results = {}
     JVM.attachCurrentThread()  # where to put this?
 
 
 def main(request):
     results = {}
     JVM.attachCurrentThread()  # where to put this?
-    srch = MultiSearch()
+    srch = Search()
 
     results = None
 
     results = None
+    query = None
+    fuzzy = False #0.8
+
     if 'q' in request.GET:
     if 'q' in request.GET:
-        toks = srch.get_tokens(request.GET['q'])
-        results = SearchResult.aggregate(srch.search_perfect_book(toks),
-                                         srch.search_perfect_parts(toks),
-                                         srch.search_everywhere(toks))
+        # tags = request.GET.get('tags', '')
+        query = request.GET['q']
+        # book_id = request.GET.get('book', None)
+        # book = None
+        # if book_id is not None:
+        #     book = get_object_or_404(Book, id=book_id)
+
+        # hint = srch.hint()
+        # try:
+        #     tag_list = Tag.get_tag_list(tags)
+        # except:
+        #     tag_list = []
+
+        if len(query) < 2:
+            return render_to_response('catalogue/search_too_short.html', {'prefix': query},
+                                      context_instance=RequestContext(request))
+
+        # hint.tags(tag_list)
+        # if book:
+        #     hint.books(book)
+        tags = srch.hint_tags(query, pdcounter=True, prefix=False, fuzzy=fuzzy)
+        tags = split_tags(tags)
+
+        toks = StringReader(query)
+        tokens_cache = {}
+
+        author_results = srch.search_phrase(toks, 'authors', fuzzy=fuzzy, tokens_cache=tokens_cache)
+        title_results = srch.search_phrase(toks, 'title', fuzzy=fuzzy, tokens_cache=tokens_cache)
+
+        # Boost main author/title results with mixed search, and save some of its results for end of list.
+        # boost author, title results
+        author_title_mixed = srch.search_some(toks, ['authors', 'title', 'tags'], fuzzy=fuzzy, tokens_cache=tokens_cache)
+        author_title_rest = []
+        for b in author_title_mixed:
+            bks = filter(lambda ba: ba.book_id == b.book_id, author_results + title_results)
+            for b2 in bks:
+                b2.boost *= 1.1
+            if bks is []:
+                author_title_rest.append(b)
+
+        # Do a phrase search but a term search as well - this can give us better snippets then search_everywhere,
+        # Because the query is using only one field.
+        text_phrase = SearchResult.aggregate(
+            srch.search_phrase(toks, 'content', fuzzy=fuzzy, tokens_cache=tokens_cache, snippets=True, book=False, slop=4),
+            srch.search_some(toks, ['content'], tokens_cache=tokens_cache, snippets=True, book=False))
+
+        everywhere = srch.search_everywhere(toks, fuzzy=fuzzy, tokens_cache=tokens_cache)
+
+        def already_found(results):
+            def f(e):
+                for r in results:
+                    if e.book_id == r.book_id:
+                        e.boost = 0.9
+                        results.append(e)
+                        return True
+                return False
+            return f
+        f = already_found(author_results + title_results + text_phrase)
+        everywhere = filter(lambda x: not f(x), everywhere)
+
+        author_results = SearchResult.aggregate(author_results)
+        title_results = SearchResult.aggregate(title_results)
+
+        everywhere = SearchResult.aggregate(everywhere, author_title_rest)
+
+        for res in [author_results, title_results, text_phrase, everywhere]:
+            res.sort(reverse=True)
+            for r in res:
+                for h in r.hits:
+                    h['snippets'] = map(lambda s:
+                                        re.subn(r"(^[ \t\n]+|[ \t\n]+$)", u"",
+                                                re.subn(r"[ \t\n]*\n[ \t\n]*", u"\n", s)[0])[0], h['snippets'])
+
+        suggestion = did_you_mean(query, srch.get_tokens(toks, field="SIMPLE"))
+        print "dym? %s" % repr(suggestion).encode('utf-8')
+
+        results = author_results + title_results + text_phrase + everywhere
         results.sort(reverse=True)
 
         results.sort(reverse=True)
 
-        for r in results:
-            print r.parts
+        if len(results) == 1:
+            fragment_hits = filter(lambda h: 'fragment' in h, results[0].hits)
+            if len(fragment_hits) == 1:
+                #anchor = fragment_hits[0]['fragment']
+                #frag = Fragment.objects.get(anchor=anchor)
+                return HttpResponseRedirect(fragment_hits[0]['fragment'].get_absolute_url())
+            return HttpResponseRedirect(results[0].book.get_absolute_url())
+        elif len(results) == 0:
+            form = PublishingSuggestForm(initial={"books": query + ", "})
+            return render_to_response('catalogue/search_no_hits.html',
+                                      {'tags': tags,
+                                       'prefix': query,
+                                       "form": form,
+                                       'did_you_mean': suggestion},
+                context_instance=RequestContext(request))
 
 
-    return render_to_response('newsearch/search.html', {"results": results},
-                              context_instance=RequestContext(request))
+        print "TAGS: %s" % tags
+        return render_to_response('catalogue/search_multiple_hits.html',
+                                  {'tags': tags,
+                                   'prefix': query,
+                                   'results': { 'author': author_results,
+                                                'title': title_results,
+                                                'content': text_phrase,
+                                                'other': everywhere},
+                                   'did_you_mean': suggestion},
+            context_instance=RequestContext(request))