feat(search): implement advanced boolean search operators with normalization

- Add utils/search_parser.py providing query parsing and Django Q construction for exact phrases, mandatory inclusions (+), excluded negations (-), and grouped OR conditions (()).

- Add auto-balancing and sanitization for unclosed quotes and parentheses.

- Seamlessly integrate all operator terms with Arabic and Persian search normalization.

- Update search querysets across Hadis, Transmitters, Book References, and Categories views.

apps/hadis/views/category.py

@@ -477,14 +477,10 @@ class CategoriesView(ListAPIView):
         )
         search_query = (self.request.query_params.get('search') or '').strip()
         if search_query:
-            from utils.text_normalizer import normalize_for_search
-            norm_q = normalize_for_search(search_query)
-            queryset = queryset.filter(
-                Q(normalized_text__icontains=norm_q) |
-                Q(title__icontains=search_query) |
-                Q(slug__icontains=search_query) |
-                Q(description__icontains=search_query)
-            )
+            from utils.search_parser import build_advanced_search_q
+            search_conditions = build_advanced_search_q(search_query, ['normalized_text'])
+            if search_conditions:
+                queryset = queryset.filter(search_conditions).distinct()
 
         is_root = self.request.query_params.get('is_root', '').lower()
         if is_root in ['true', '1']:
@@ -517,14 +513,10 @@ class CategoriesBySectView(ListAPIView):
         )
         search_query = (self.request.query_params.get('search') or '').strip()
         if search_query:
-            from utils.text_normalizer import normalize_for_search
-            norm_q = normalize_for_search(search_query)
-            queryset = queryset.filter(
-                Q(normalized_text__icontains=norm_q) |
-                Q(title__icontains=search_query) |
-                Q(slug__icontains=search_query) |
-                Q(description__icontains=search_query)
-            )
+            from utils.search_parser import build_advanced_search_q
+            search_conditions = build_advanced_search_q(search_query, ['normalized_text'])
+            if search_conditions:
+                queryset = queryset.filter(search_conditions).distinct()
 
         is_root_param = self.request.query_params.get('is_root', None)
         if is_root_param is not None:

apps/hadis/views/hadis.py

@@ -361,21 +361,15 @@ class HadisListView(ListAPIView):
         # 👇 1. Apply Search Filter
         search_query = self.request.query_params.get('search', None)
         if search_query:
-            from utils.text_normalizer import normalize_for_search
-            norm_q = normalize_for_search(search_query)
-
-            search_conditions = Q(normalized_text__icontains=norm_q)
-            search_conditions |= Q(text__icontains=search_query)
-            search_conditions |= Q(title__icontains=search_query)
-            search_conditions |= Q(title_narrator__icontains=search_query)
-            search_conditions |= Q(translation__icontains=search_query)
-            search_conditions |= Q(tags__title__icontains=search_query)
-            search_conditions |= Q(references__book_reference__normalized_text__icontains=norm_q)
-            search_conditions |= Q(references__book_reference__title__icontains=search_query)
-            search_conditions |= Q(transmitters__transmitter__normalized_text__icontains=norm_q)
-            search_conditions |= Q(transmitters__transmitter__full_name__icontains=search_query)
-            search_conditions |= Q(transmitters__transmitter__known_as__icontains=search_query)
-            queryset = queryset.filter(search_conditions)
+            from utils.search_parser import build_advanced_search_q
+            search_fields = [
+                'normalized_text',
+                'references__book_reference__normalized_text',
+                'transmitters__transmitter__normalized_text'
+            ]
+            search_conditions = build_advanced_search_q(search_query, search_fields)
+            if search_conditions:
+                queryset = queryset.filter(search_conditions).distinct()
 
         # 👇 2. Apply Status Filter (Supports multiple comma-separated slugs)
         status_filter = self.request.query_params.get('status', None)
@@ -631,29 +625,19 @@ class HadisMainListView(ListAPIView):
 
     def apply_search_filter(self, queryset, search_query):
         """
-        Apply search filter across multiple fields including normalized text and JSONFields.
-        Searches in: normalized_text, title, title_narrator, text, translation, tags, book references, transmitters
+        Apply advanced boolean search filter across multiple fields including normalized text.
+        Supports exact phrase ("..."), mandatory (+), exclude (-), and grouping (...).
         """
-        from django.db.models import Q
-        from utils.text_normalizer import normalize_for_search
-        norm_q = normalize_for_search(search_query)
-
-        # Primary normalized search (matches Arabic/Persian/English invariantly)
-        search_conditions = Q(normalized_text__icontains=norm_q)
-
-        # Fallback raw search
-        search_conditions |= Q(text__icontains=search_query)
-        search_conditions |= Q(title__icontains=search_query)
-        search_conditions |= Q(title_narrator__icontains=search_query)
-        search_conditions |= Q(translation__icontains=search_query)
-        search_conditions |= Q(tags__title__icontains=search_query)
-        search_conditions |= Q(references__book_reference__normalized_text__icontains=norm_q)
-        search_conditions |= Q(references__book_reference__title__icontains=search_query)
-        search_conditions |= Q(transmitters__transmitter__normalized_text__icontains=norm_q)
-        search_conditions |= Q(transmitters__transmitter__full_name__icontains=search_query)
-        search_conditions |= Q(transmitters__transmitter__known_as__icontains=search_query)
-
-        return queryset.filter(search_conditions)
+        from utils.search_parser import build_advanced_search_q
+        search_fields = [
+            'normalized_text',
+            'references__book_reference__normalized_text',
+            'transmitters__transmitter__normalized_text'
+        ]
+        search_conditions = build_advanced_search_q(search_query, search_fields)
+        if search_conditions:
+            return queryset.filter(search_conditions).distinct()
+        return queryset
 
     #we add this later
 
@@ -929,19 +913,14 @@ class CategoryHadisCorrectionsView(ListAPIView):
             # Optional search query filter
             search_query = self.request.query_params.get('search', None)
             if search_query:
-                from utils.text_normalizer import normalize_for_search
-                norm_q = normalize_for_search(search_query)
-                search_conditions = (
-                    Q(normalized_text__icontains=norm_q) |
-                    Q(hadis__normalized_text__icontains=norm_q) |
-                    Q(title__icontains=search_query) |
-                    Q(text__icontains=search_query) |
-                    Q(narrator__icontains=search_query) |
-                    Q(translation__icontains=search_query) |
-                    Q(hadis__title__icontains=search_query) |
-                    Q(hadis__title_narrator__icontains=search_query)
-                )
-                queryset = queryset.filter(search_conditions)
+                from utils.search_parser import build_advanced_search_q
+                search_fields = [
+                    'normalized_text',
+                    'hadis__normalized_text'
+                ]
+                search_conditions = build_advanced_search_q(search_query, search_fields)
+                if search_conditions:
+                    queryset = queryset.filter(search_conditions).distinct()
 
             # Optional filter by specific hadith slug(s) or ID(s)
             hadis_param_keys = ['hadis_slug', 'hadis_slugs', 'hadiths']

apps/hadis/views/reference.py

@@ -35,16 +35,11 @@ class BookReferencesView(ListAPIView):
         return queryset
 
     def apply_search_filter(self, queryset, search_query):
-        """
-        Apply search filter across book titles (JSONField) and normalized text.
-        Searches in: normalized_text, title
-        """
-        from utils.text_normalizer import normalize_for_search
-        norm_q = normalize_for_search(search_query)
-
-        search_conditions = Q(normalized_text__icontains=norm_q) | Q(title__icontains=search_query)
-
-        return queryset.filter(search_conditions)
+        from utils.search_parser import build_advanced_search_q
+        search_conditions = build_advanced_search_q(search_query, ['normalized_text'])
+        if search_conditions:
+            return queryset.filter(search_conditions).distinct()
+        return queryset
 
 
 class BookAuthorView(ListAPIView):

apps/hadis/views/reference_v2.py

@@ -162,15 +162,10 @@ class BookReferenceV2ListView(generics.ListAPIView):
         
         search = self.request.query_params.get('search')
         if search:
-            from django.db.models import Q
-            from utils.text_normalizer import normalize_for_search
-            norm_q = normalize_for_search(search)
-            qs = qs.filter(
-                Q(normalized_text__icontains=norm_q) |
-                Q(title__icontains=search) |
-                Q(description__icontains=search) |
-                Q(author__name__icontains=search)
-            )
+            from utils.search_parser import build_advanced_search_q
+            search_conditions = build_advanced_search_q(search, ['normalized_text'])
+            if search_conditions:
+                qs = qs.filter(search_conditions).distinct()
             
         # Category (Multi-select)
         categories = self._get_multi_param('category', 'categories', 'category[]', 'categories[]')

apps/hadis/views/transmitter.py

@@ -42,19 +42,11 @@ class TransmitterView(ListAPIView):
 
         # 1. Apply search filter (Searching across name-related JSONFields, slug, legacy_id)
         if search_query:
-            from utils.text_normalizer import normalize_for_search
-            norm_q = normalize_for_search(search_query)
-            q_filter = (
-                Q(normalized_text__icontains=norm_q) |
-                Q(full_name__icontains=search_query) |
-                Q(kunya__icontains=search_query) |
-                Q(known_as__icontains=search_query) |
-                Q(nickname__icontains=search_query) |
-                Q(slug__icontains=search_query) |
-                Q(legacy_id__icontains=search_query)
-            )
+            from utils.search_parser import build_advanced_search_q
+            q_filter = build_advanced_search_q(search_query, ['normalized_text', 'slug', 'legacy_id'])
             if search_query.isdigit():
                 q_filter |= Q(legacy_number=int(search_query)) | Q(generation=int(search_query))
+            if q_filter:
                 queryset = queryset.filter(q_filter)
 
         # 2. Apply categorical filters
@@ -424,15 +416,10 @@ class NarratorTeachersView(ListAPIView):
 
         search_query = self.request.query_params.get('search', None)
         if search_query:
-            from utils.text_normalizer import normalize_for_search
-            norm_q = normalize_for_search(search_query)
-            queryset = queryset.filter(
-                Q(normalized_text__icontains=norm_q) |
-                Q(full_name__icontains=search_query) |
-                Q(kunya__icontains=search_query) |
-                Q(known_as__icontains=search_query) |
-                Q(nickname__icontains=search_query)
-            )
+            from utils.search_parser import build_advanced_search_q
+            q_filter = build_advanced_search_q(search_query, ['normalized_text'])
+            if q_filter:
+                queryset = queryset.filter(q_filter)
 
         return queryset
 
@@ -477,15 +464,10 @@ class NarratorStudentsView(ListAPIView):
 
         search_query = self.request.query_params.get('search', None)
         if search_query:
-            from utils.text_normalizer import normalize_for_search
-            norm_q = normalize_for_search(search_query)
-            queryset = queryset.filter(
-                Q(normalized_text__icontains=norm_q) |
-                Q(full_name__icontains=search_query) |
-                Q(kunya__icontains=search_query) |
-                Q(known_as__icontains=search_query) |
-                Q(nickname__icontains=search_query)
-            )
+            from utils.search_parser import build_advanced_search_q
+            q_filter = build_advanced_search_q(search_query, ['normalized_text'])
+            if q_filter:
+                queryset = queryset.filter(q_filter)
 
         return queryset
 

utils/search_parser.py

@@ -0,0 +1,154 @@
+"""
+Advanced Search Query Parser for Boolean & Operator-based Search.
+Supports:
+- Exact Phrase Match: "phrase" or «phrase»
+- Mandatory / Required Term: +word or +"phrase"
+- Excluded / Negative Term: -word or -"phrase"
+- Grouped OR Conditions: (word1 word2) or +(word1 word2)
+- Excluded Grouped OR Conditions: -(word1 word2)
+- Compound Expressions: +term1 +term2 +"exact phrase" +(g1 g2) -excluded
+Seamlessly integrates with Arabic & Persian search normalization.
+"""
+
+import re
+from typing import List, Optional, Tuple, Union
+from django.db.models import Q
+from utils.text_normalizer import normalize_for_search
+
+TOKEN_REGEX = re.compile(
+    r'(?P<group>(?P<g_prefix>[+-]?)\s*\((?P<g_body>[^)]+)\))|'
+    r'(?P<phrase>(?P<p_prefix>[+-]?)\s*["«](?P<p_body>[^"»]+)["»])|'
+    r'(?P<word>(?P<w_prefix>[+-]?)(?P<w_body>[^\s()«»"]+))'
+)
+
+
+def sanitize_search_query(query: str) -> str:
+    """
+    Cleans search query and balances unclosed quotes/parentheses.
+    """
+    if not query:
+        return ""
+    q = query.strip()
+    # Balance double quotes
+    if q.count('"') % 2 != 0:
+        q += '"'
+    # Balance Persian/Arabic quotes
+    if q.count('«') > q.count('»'):
+        q += '»' * (q.count('«') - q.count('»'))
+    # Balance parentheses
+    if q.count('(') > q.count(')'):
+        q += ')' * (q.count('(') - q.count(')'))
+    return q
+
+
+def parse_search_tokens(query: str) -> List[Tuple[str, str, Union[str, List[str]]]]:
+    """
+    Parses a query string into structured search tokens:
+    - ('PHRASE', '+' | '-', phrase_text)
+    - ('WORD', '+' | '-', word_text)
+    - ('GROUP', '+' | '-', [item1, item2, ...])
+    """
+    q = sanitize_search_query(query)
+    tokens = []
+
+    for m in TOKEN_REGEX.finditer(q):
+        if m.group('group'):
+            prefix = m.group('g_prefix') or '+'
+            body = m.group('g_body').strip()
+            items = []
+            for im in re.finditer(r'["«](?P<phrase>[^"»]+)["»]|(?P<word>[^\s"«»]+)', body):
+                txt = im.group('phrase') or im.group('word')
+                if txt and txt.strip():
+                    items.append(txt.strip())
+            if items:
+                tokens.append(('GROUP', prefix, items))
+        elif m.group('phrase'):
+            prefix = m.group('p_prefix') or '+'
+            body = m.group('p_body').strip()
+            if body:
+                tokens.append(('PHRASE', prefix, body))
+        elif m.group('word'):
+            prefix = m.group('w_prefix') or '+'
+            body = m.group('w_body').strip()
+            if body and body not in ('+', '-'):
+                tokens.append(('WORD', prefix, body))
+
+    return tokens
+
+
+def _build_single_term_match(norm_term: str, fields: List[str]) -> Q:
+    """
+    Builds a Q condition matching a normalized term across the specified fields.
+    """
+    term_q = Q()
+    for f in fields:
+        term_q |= Q(**{f"{f}__icontains": norm_term})
+    return term_q
+
+
+def build_advanced_search_q(query_str: Optional[str], fields: Optional[List[str]] = None) -> Q:
+    """
+    Converts a user search query with operators (+, -, "", ()) into a Django Q object.
+    
+    :param query_str: Raw search query from the request
+    :param fields: List of model fields to search in (defaults to ['normalized_text'])
+    :return: Combined Django Q object
+    """
+    if not query_str or not query_str.strip():
+        return Q()
+
+    if not fields:
+        fields = ['normalized_text']
+
+    tokens = parse_search_tokens(query_str)
+    if not tokens:
+        return Q()
+
+    positive_q = Q()
+    has_positive = False
+
+    negative_q = Q()
+    has_negative = False
+
+    for token_type, prefix, payload in tokens:
+        is_exclude = (prefix == '-')
+
+        if token_type in ('WORD', 'PHRASE'):
+            norm_val = normalize_for_search(payload)
+            if not norm_val:
+                continue
+
+            term_q = _build_single_term_match(norm_val, fields)
+            if not term_q:
+                continue
+
+            if is_exclude:
+                negative_q &= ~term_q
+                has_negative = True
+            else:
+                positive_q &= term_q
+                has_positive = True
+
+        elif token_type == 'GROUP':
+            group_q = Q()
+            for item in payload:
+                norm_it = normalize_for_search(item)
+                if norm_it:
+                    group_q |= _build_single_term_match(norm_it, fields)
+
+            if group_q:
+                if is_exclude:
+                    negative_q &= ~group_q
+                    has_negative = True
+                else:
+                    positive_q &= group_q
+                    has_positive = True
+
+    if has_positive and has_negative:
+        return positive_q & negative_q
+    elif has_positive:
+        return positive_q
+    elif has_negative:
+        return negative_q
+
+    return Q()