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Disallow link on book tags to avoid confusion.
[wolnelektury.git] / apps / search / views.py
diff --git a/apps/search/views.py b/apps/search/views.py
index dc90841..9a0b469 100644 (file)
--- a/apps/search/views.py
+++ b/apps/search/views.py
@@ -1,106 +1,232 @@
+# -*- 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.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.views.decorators import cache
+from django.http import HttpResponse, HttpResponseRedirect, Http404, HttpResponsePermanentRedirect
+from django.utils.translation import ugettext as _
 
 
-from catalogue.utils import get_random_hash
-from catalogue.models import Book, Tag, TAG_CATEGORIES
-from catalogue.fields import dumps
+from catalogue.utils import split_tags
+from catalogue.models import Book, Tag, Fragment
+from pdcounter.models import Author as PDCounterAuthor, BookStub as PDCounterBook
 from catalogue.views import JSONResponse
 from catalogue.views import JSONResponse
-from catalogue import forms
-from search import MultiSearch, JVM, SearchResult
-from lucene import StringReader
+from search import Search, SearchResult
+from suggest.forms import PublishingSuggestForm
+import re
+#import enchant
+import json
 
 
-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:
-        print("%s ok? %s, sug: %s" %(t, dictionary.check(t), dictionary.suggest(t)))
-        if not dictionary.check(t):
-            try:
-                change[t] = dictionary.suggest(t)[0]
-            except IndexError:
-                pass
+query_syntax_chars = re.compile(r"[\\/*:(){}]")
 
 
-    if change == {}:
-        return None
 
 
-    for frm, to in change.items():
-        query = query.replace(frm, to)
+def remove_query_syntax_chars(query, replace=' '):
+    return query_syntax_chars.sub(' ', query)
 
 
+
+def did_you_mean(query, tokens):
     return query
     return query
+    # change = {}
+    # for t in tokens:
+    #     authors = Tag.objects.filter(category='author', name__iregex=match_word_re(t))
+    #     if len(authors) > 0:
+    #         continue
 
 
+    #     if False:
+    #         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
 
 
-def category_name(category):
-    try:
-        return filter(lambda c: c[0] == category, TAG_CATEGORIES)[0][1].encode('utf-8')
-    except IndexError:
-        raise KeyError("No category %s" % category)
+    # 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:
 
 
 def hint(request):
     prefix = request.GET.get('term', '')
     if len(prefix) < 2:
-        return JSONResponse(dumps({}))
-    JVM.attachCurrentThread()
-    s = MultiSearch()
-    tags = s.hint_tags(prefix)
-    books = s.hint_books(prefix)
-
-    return JSONResponse(
-        [{'label': t.name,
-          'category': category_name(t.category),
-          'id': t.id,
-          'url': t.get_absolute_url()}
-          for t in tags] + \
-          [{'label': b.title,
-            'category': category_name('book'),
-            'id': b.id,
-            'url': b.get_absolute_url()}
-            for b in books])
+        return JSONResponse([])
+
+    prefix = remove_query_syntax_chars(prefix)
+
+    search = Search()
+    # 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 = search.hint_tags(prefix, pdcounter=True)
+    books = search.hint_books(prefix)
+
+    def is_dupe(tag):
+        if isinstance(tag, PDCounterAuthor):
+            if filter(lambda t: t.slug == tag.slug and t != tag, tags):
+                return True
+        elif isinstance(tag, PDCounterBook):
+            if filter(lambda b: b.slug == tag.slug, tags):
+                return True
+        return False
+
+    tags = filter(lambda t: not is_dupe(t), tags)
+
+    def category_name(c):
+        if c.startswith('pd_'):
+            c = c[len('pd_'):]
+        return _(c)
+
+    callback = request.GET.get('callback', None)
+    data = [{'label': t.name,
+              'category': category_name(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]
+    if callback:
+        return HttpResponse("%s(%s);" % (callback, json.dumps(data)),
+                            content_type="application/json; charset=utf-8")
+    else:
+        return JSONResponse(data)
 
 
 def main(request):
     results = {}
 
 
 def main(request):
     results = {}
-    JVM.attachCurrentThread()  # where to put this?
-    srch = MultiSearch()
 
     results = None
     query = None
 
     results = None
     query = None
-    fuzzy = False
 
 
-    if 'q' in request.GET:
-        tags = request.GET.get('tags', '')
-        try:
-            tag_list = Tag.get_tag_list(tags)
-        except:
-            tag_list = []
+    query = request.GET.get('q', '')
 
 
-            #        tag_filter = srch.
+    if len(query) < 2:
+        return render_to_response('catalogue/search_too_short.html',
+                                  {'prefix': query},
+            context_instance=RequestContext(request))
 
 
-        query = request.GET['q']
-        toks = StringReader(query)
-        fuzzy = 'fuzzy' in request.GET
-        if fuzzy:
-            fuzzy = 0.7
-
-
-        results = SearchResult.aggregate(srch.search_perfect_book(toks, fuzzy=fuzzy),
-                                         srch.search_perfect_parts(toks, fuzzy=fuzzy),
-                                         srch.search_everywhere(toks, fuzzy=fuzzy))
-        results.sort(reverse=True)
-
-        for r in results:
-            print r.parts
-
-    return render_to_response('newsearch/search.html', {'results': results,
-                                                        'did_you_mean': (query is not None) and 
-                                                        did_you_mean(query, srch.get_tokens(query, field='SIMPLE')),
-                                                        'fuzzy': fuzzy},
-                              context_instance=RequestContext(request))
+    query = remove_query_syntax_chars(query)
+    
+    search = Search()
+
+    theme_terms = search.index.analyze(text=query, field="themes_pl") \
+        + search.index.analyze(text=query, field="themes")
+
+            # change hints
+    tags = search.hint_tags(query, pdcounter=True, prefix=False)
+    tags = split_tags(tags)
+
+    author_results = search.search_phrase(query, 'authors', book=True)
+    translator_results = search.search_phrase(query, 'translators', book=True)
+
+    title_results = search.search_phrase(query, 'title', book=True)
+
+    # 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 = search.search_some(query, ['authors', 'translators', 'title', 'tags'], query_terms=theme_terms)
+    author_title_rest = []
+
+    for b in author_title_mixed:
+        also_in_mixed = filter(lambda ba: ba.book_id == b.book_id, author_results + translator_results + title_results)
+        for b2 in also_in_mixed:
+            b2.boost *= 1.1
+        if also_in_mixed 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(
+        search.search_phrase(query, 'text', snippets=True, book=False),
+        search.search_some(query, ['text'], snippets=True, book=False, query_terms=theme_terms))
+
+    everywhere = search.search_everywhere(query, query_terms=theme_terms)
+
+    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 + translator_results + title_results + text_phrase)
+    everywhere = filter(lambda x: not f(x), everywhere)
+
+    author_results = SearchResult.aggregate(author_results)
+    translator_results = SearchResult.aggregate(translator_results)
+    title_results = SearchResult.aggregate(title_results)
+
+    everywhere = SearchResult.aggregate(everywhere, author_title_rest)
+
+    for field, res in [('authors', author_results),
+                       ('translators', translator_results),
+                       ('title', title_results),
+                       ('text', text_phrase),
+                       ('text', everywhere)]:
+        res.sort(reverse=True)
+        for r in res:
+            search.get_snippets(r, query, field, 3)
+
+    suggestion = u''
+
+    def ensure_exists(r):
+        try:
+            return r.book
+        except Book.DoesNotExist:
+            return False
+
+    author_results = filter(ensure_exists, author_results)
+    translator_results = filter(ensure_exists, translator_results)
+    title_results = filter(ensure_exists, title_results)
+    text_phrase = filter(ensure_exists, text_phrase)
+    everywhere = filter(ensure_exists, everywhere)
+
+    results = author_results + translator_results + title_results + text_phrase + everywhere
+    # ensure books do exists & sort them
+    for res in (author_results, translator_results, title_results, text_phrase, everywhere):
+        res.sort(reverse=True)
+
+    # We don't want to redirect to book text, but rather display result page even with one result.
+    # 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())
+    if 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('catalogue/search_multiple_hits.html',
+                              {'tags': tags,
+                               'prefix': query,
+                               'results': {'author': author_results,
+                                           'translator': translator_results,
+                                           'title': title_results,
+                                           'content': text_phrase,
+                                           'other': everywhere},
+                               'did_you_mean': suggestion},
+        context_instance=RequestContext(request))