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1 Parent(s): 69406fb

Update main.py

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  1. main.py +172 -282
main.py CHANGED
@@ -1,12 +1,12 @@
1
  """
2
- main.py — Pricelyst Shopping Advisor (Jessica Edition 2026 - Upgrade v2.5)
3
 
4
- ✅ Fixed: "Basket Regression" - AI now returns prices IMMEDIATELY.
5
- Fixed: "Bluffing" - AI explicitly states if item is found or missing.
6
- Optimization: Removed "Add to list" chatter. Shortest path to value.
7
- ✅ "Analyst Engine": Enhanced Basket Math, Category Context, ZESA Logic.
8
  ✅ "Visual Engine": Lists, Products, & Meal-to-Recipe recognition.
9
- ✅ Memory Logic: Short-Term Sliding Window (Last 6 messages).
10
 
11
  ENV VARS:
12
  - GOOGLE_API_KEY=...
@@ -115,7 +115,7 @@ app = Flask(__name__)
115
  CORS(app)
116
 
117
  # =========================
118
- # 1. ETL Layer (Ingestion)
119
  # =========================
120
 
121
  def _norm(s: Any) -> str:
@@ -140,7 +140,10 @@ def _safe_json_loads(s: str, fallback: Any):
140
  return fallback
141
 
142
  def fetch_and_flatten_data() -> pd.DataFrame:
143
- """Fetches from /api/v1/product-listing and flattens into an analytical DF."""
 
 
 
144
  all_products = []
145
  page = 1
146
 
@@ -170,26 +173,35 @@ def fetch_and_flatten_data() -> pd.DataFrame:
170
  try:
171
  p_id = int(p.get("id") or 0)
172
  p_name = str(p.get("name") or "Unknown")
173
- clean_name = _norm(p_name)
174
-
175
- cat_obj = p.get("category") or {}
176
- cat_name = str(cat_obj.get("name") or "General")
177
 
 
178
  brand_obj = p.get("brand") or {}
179
  brand_name = str(brand_obj.get("brand_name") or "")
180
 
 
 
 
 
 
 
 
 
 
 
 
181
  views = int(p.get("view_count") or 0)
182
  image = str(p.get("thumbnail") or p.get("image") or "")
183
 
184
  prices = p.get("prices") or []
185
 
186
  if not prices:
 
187
  rows.append({
188
  "product_id": p_id,
189
  "product_name": p_name,
190
- "clean_name": clean_name,
191
  "brand": brand_name,
192
- "category": cat_name,
193
  "retailer": "Listing",
194
  "price": 0.0,
195
  "views": views,
@@ -207,9 +219,9 @@ def fetch_and_flatten_data() -> pd.DataFrame:
207
  rows.append({
208
  "product_id": p_id,
209
  "product_name": p_name,
210
- "clean_name": clean_name,
211
  "brand": brand_name,
212
- "category": cat_name,
213
  "retailer": r_name,
214
  "price": price_val,
215
  "views": views,
@@ -234,54 +246,56 @@ def get_market_index(force_refresh: bool = False) -> pd.DataFrame:
234
  return _data_cache["df"]
235
 
236
  # =========================
237
- # 2. Analyst Engine (Math Logic)
238
  # =========================
239
 
240
- def search_products_fuzzy(df: pd.DataFrame, query: str, limit: int = 10) -> pd.DataFrame:
 
 
 
241
  if df.empty or not query: return df
242
  q_norm = _norm(query)
243
 
244
- # 1. Contains
245
- mask_name = df['clean_name'].str.contains(q_norm, regex=False)
246
- matches = df[mask_name].copy()
247
 
248
- # 2. Token overlap fallback
249
  if matches.empty:
250
  q_tokens = set(q_norm.split())
251
  def token_score(text):
252
  if not isinstance(text, str): return 0
253
  text_tokens = set(text.split())
254
  if not text_tokens: return 0
255
- intersection = q_tokens.intersection(text_tokens)
256
- return len(intersection)
257
 
258
  df_scored = df.copy()
259
- df_scored['score'] = df_scored['clean_name'].apply(token_score)
260
  matches = df_scored[df_scored['score'] > 0]
261
 
262
  if matches.empty: return matches
263
 
264
- # 3. Sort by Views + Price
265
  matches = matches.sort_values(by=['views', 'price'], ascending=[False, True])
266
  return matches.head(limit)
267
 
268
- def get_category_stats(df: pd.DataFrame, category_name: str) -> Dict[str, Any]:
269
- if df.empty: return {}
270
- cat_df = df[df['category'].str.lower().str.contains(category_name.lower()) & df['is_offer']]
271
- if cat_df.empty:
272
- cat_df = df[df['clean_name'].str.contains(category_name.lower()) & df['is_offer']]
273
-
274
- if cat_df.empty: return {}
275
-
276
- return {
277
- "category": category_name,
278
- "min_price": float(cat_df['price'].min()),
279
- "max_price": float(cat_df['price'].max()),
280
- "avg_price": float(cat_df['price'].mean()),
281
- "sample_size": int(len(cat_df))
282
- }
283
-
284
- def calculate_basket_optimization(item_names: List[str]) -> Dict[str, Any]:
285
  df = get_market_index()
286
  if df.empty:
287
  return {"actionable": False, "error": "No data"}
@@ -289,89 +303,66 @@ def calculate_basket_optimization(item_names: List[str]) -> Dict[str, Any]:
289
  found_items = []
290
  missing_global = []
291
 
 
292
  for item in item_names:
293
- hits = search_products_fuzzy(df[df['is_offer']==True], item, limit=5)
 
294
  if hits.empty:
295
  missing_global.append(item)
296
  continue
297
 
298
- best_prod = hits.iloc[0]
299
- cat_stats = get_category_stats(df, str(best_prod['category']))
 
 
 
 
 
300
 
 
 
 
 
 
 
 
301
  found_items.append({
302
- "query": str(item),
303
- "product_id": int(best_prod['product_id']),
304
- "name": str(best_prod['product_name']),
305
- "category": str(best_prod['category']),
306
- "retailer": str(best_prod['retailer']), # Added explicitly for prompt access
307
- "price": float(best_prod['price']), # Added explicitly for prompt access
308
- "category_stats": cat_stats
309
  })
310
 
311
  if not found_items:
312
- return {
313
- "actionable": True,
314
- "basket_items": [],
315
- "global_missing": missing_global,
316
- "best_store": None,
317
- "split_strategy": None
318
- }
319
-
320
- target_pids = [x['product_id'] for x in found_items]
321
- relevant_offers = df[df['product_id'].isin(target_pids) & df['is_offer']]
322
-
323
- retailer_stats = []
324
- all_retailers = relevant_offers['retailer'].unique()
325
-
326
- for retailer in all_retailers:
327
- r_df = relevant_offers[relevant_offers['retailer'] == retailer]
328
- found_count = len(r_df)
329
- total_price = r_df['price'].sum()
330
-
331
- retailer_pids = r_df['product_id'].tolist()
332
- found_names = [x['name'] for x in found_items if x['product_id'] in retailer_pids]
333
-
334
- retailer_stats.append({
335
- "retailer": str(retailer),
336
- "total_price": float(total_price),
337
- "item_count": int(found_count),
338
- "coverage_percent": float((found_count / len(found_items)) * 100),
339
- "found_items": found_names
340
- })
341
-
342
- retailer_stats.sort(key=lambda x: (-x['coverage_percent'], x['total_price']))
343
- best_single_store = retailer_stats[0] if retailer_stats else None
344
 
345
- split_basket = []
346
- split_total = 0.0
347
-
348
- for item in found_items:
349
- p_offers = relevant_offers[relevant_offers['product_id'] == item['product_id']]
350
- if not p_offers.empty:
351
- best_offer = p_offers.sort_values('price').iloc[0]
352
- split_total += best_offer['price']
353
- split_basket.append({
354
- "item": item['name'],
355
- "retailer": str(best_offer['retailer']),
356
- "price": float(best_offer['price'])
357
- })
358
 
359
- split_strategy = {
360
- "total_price": float(split_total),
361
- "breakdown": split_basket,
362
- "store_count": len(set(x['retailer'] for x in split_basket))
363
- }
364
-
365
- return {
366
  "actionable": True,
367
- "basket_items": [x['name'] for x in found_items],
368
- "found_items_details": found_items,
369
  "global_missing": missing_global,
370
- "best_store": best_single_store,
371
- "split_strategy": split_strategy,
372
- "all_stores": retailer_stats[:3]
373
  }
374
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
375
  def calculate_zesa_units(amount_usd: float) -> Dict[str, Any]:
376
  remaining = amount_usd / 1.06
377
  units = 0.0
@@ -423,22 +414,23 @@ def gemini_detect_intent(transcript: str) -> Dict[str, Any]:
423
  PROMPT = """
424
  Analyze transcript. Return STRICT JSON.
425
  Classify intent:
426
- - CASUAL_CHAT: Greetings, small talk, "hi", "thanks".
427
- - SHOPPING_BASKET: Looking for prices, products, lists, or "cheapest X".
428
  - UTILITY_CALC: Electricity/ZESA questions.
429
  - STORE_DECISION: "Where should I buy?", "Which store is cheapest?".
430
- - TRUST_CHECK: "Is this expensive?", "Is this a good deal?".
431
 
432
  Extract:
433
- - items: list of products found in the text.
434
  - utility_amount: number
 
435
 
436
  JSON Schema:
437
  {
438
  "actionable": boolean,
439
  "intent": "string",
440
  "items": ["string"],
441
- "utility_amount": number
 
442
  }
443
  """
444
  try:
@@ -458,17 +450,15 @@ def gemini_analyze_image(image_b64: str, caption: str = "") -> Dict[str, Any]:
458
  PROMPT = f"""
459
  Analyze this image. Context: {caption}
460
  1. SHOPPING LIST? -> Extract items.
461
- 2. SINGLE PRODUCT? -> Extract the BRAND and PRODUCT NAME into 'items'. (e.g. "Pepsi 500ml")
462
- 3. MEAL/DISH? -> Identify the dish and ingredients.
463
- 4. IRRELEVANT (Pet, Person, Nature)? -> Return type "IRRELEVANT".
464
-
465
- IMPORTANT: If type is 'PRODUCT', the 'items' list MUST contain the product name. Do not leave it empty.
466
 
467
  Return STRICT JSON:
468
  {{
469
  "type": "LIST" | "PRODUCT" | "MEAL" | "IRRELEVANT",
470
  "items": ["item1"],
471
- "description": "Short description of what is seen"
472
  }}
473
  """
474
  try:
@@ -482,7 +472,6 @@ def gemini_analyze_image(image_b64: str, caption: str = "") -> Dict[str, Any]:
482
  config=types.GenerateContentConfig(response_mime_type="application/json")
483
  )
484
  result = _safe_json_loads(resp.text, {"type": "IRRELEVANT", "items": []})
485
- logger.info(f"🔮 VISION RAW: {json.dumps(result)}")
486
  return result
487
  except Exception as e:
488
  logger.error(f"Vision Error: {e}")
@@ -495,7 +484,7 @@ def gemini_chat_response(transcript: str, intent: Dict, analyst_data: Dict, chat
495
  context_str += f"ZIMBABWE CONTEXT: Fuel={ZIM_CONTEXT['fuel_petrol']}, ZESA Rate={ZIM_CONTEXT['zesa_step_1']['rate']}\n"
496
 
497
  if analyst_data:
498
- context_str += f"ANALYST DATA (Prices/Availability): {json.dumps(analyst_data, default=str)}\n"
499
 
500
  PROMPT = f"""
501
  You are Jessica, Pricelyst's Shopping Advisor (Zimbabwe).
@@ -507,22 +496,25 @@ def gemini_chat_response(transcript: str, intent: Dict, analyst_data: Dict, chat
507
  CONTEXT:
508
  {context_str}
509
 
510
- CRITICAL INSTRUCTIONS (Shortest Path Rule):
511
- 1. **CHECK ANALYST DATA FIRST**:
512
- - If `ANALYST DATA` contains `found_items_details` or `split_strategy` with prices: **REPORT THEM IMMEDIATELY**.
513
- - Say: "I found [Product] at [Retailer] for $[Price]."
514
- - Do NOT say "I will add this to your list."
515
- - Do NOT say "I will check for you." (You have already checked!)
516
-
517
- 2. **MISSING ITEMS**:
518
- - If `global_missing` has items: Say "I checked, but we don't have [Item] in our current catalogue."
519
- - Don't fake it. Be honest about catalogue gaps.
520
-
521
- 3. **CASUAL CHAT**:
522
- - Only if no products are mentioned. "Makadii! How can I help?"
523
- - Reset topic if user says "Hi" or changes subject.
524
-
525
- TONE: Helpful, direct, Zimbabwean. Use Markdown for prices (e.g. **$3.50**).
 
 
 
526
  """
527
 
528
  try:
@@ -539,18 +531,13 @@ def gemini_generate_4step_plan(transcript: str, analyst_result: Dict) -> str:
539
  if not _gemini_client: return "# Error\nAI Offline."
540
 
541
  PROMPT = f"""
542
- Generate a formatted Markdown Shopping Plan (Jessica Edition).
543
-
544
  DATA: {json.dumps(analyst_result, indent=2, default=str)}
545
-
546
  SECTIONS:
547
- 1. **In Our Catalogue ✅** (Table: Item | Store | Price)
548
- 2. **Not in Catalogue 😔** (Estimates)
549
  3. **Recommendation 💡**
550
- - "Best Single Store" vs "Split & Save".
551
  4. **Budget Tips**
552
-
553
- Make it look professional yet friendly.
554
  """
555
  try:
556
  resp = _gemini_client.models.generate_content(model=GEMINI_MODEL, contents=PROMPT)
@@ -569,59 +556,48 @@ def health():
569
  "ok": True,
570
  "offers_indexed": len(df),
571
  "api_source": PRICE_API_BASE,
572
- "persona": "Jessica v2.5 (Immediate Price Check)"
573
  })
574
 
575
  @app.post("/chat")
576
  def chat():
577
- """
578
- Unified Text Chat Endpoint.
579
- Uses SHORT-TERM SLIDING WINDOW memory only.
580
- """
581
  body = request.get_json(silent=True) or {}
582
  msg = body.get("message", "")
583
  pid = body.get("profile_id")
584
 
585
  if not pid: return jsonify({"ok": False, "error": "Missing profile_id"}), 400
586
 
587
- # 1. Fetch Short-Term History (Sliding Window)
588
  history_str = ""
589
  if db:
590
  try:
591
- # Get last 6 messages
592
  docs = db.collection("pricelyst_profiles").document(pid).collection("chat_logs") \
593
  .order_by("ts", direction=firestore.Query.DESCENDING).limit(6).stream()
594
-
595
- msgs = []
596
- for d in docs:
597
- data = d.to_dict()
598
- msgs.append(f"User: {data.get('message')}\nJessica: {data.get('response')}")
599
-
600
- if msgs:
601
- history_str = "\n".join(reversed(msgs))
602
- except Exception as e:
603
- logger.error(f"History Fetch Error: {e}")
604
 
605
- # 2. Intent Detection
606
  intent_data = gemini_detect_intent(msg)
607
  intent_type = intent_data.get("intent", "CASUAL_CHAT")
608
  items = intent_data.get("items", [])
 
609
 
 
 
 
 
610
  analyst_data = {}
611
 
612
- # 3. Data Processing (The Analyst)
613
- # Trigger Analyst if Items exist OR intent is specifically about shopping/decisions
614
  if items or intent_type in ["SHOPPING_BASKET", "STORE_DECISION", "TRUST_CHECK"]:
615
- analyst_data = calculate_basket_optimization(items)
616
 
617
  elif intent_type == "UTILITY_CALC":
618
  amount = intent_data.get("utility_amount", 20)
619
  analyst_data = calculate_zesa_units(amount)
620
 
621
- # 4. Response Generation (The Persona)
622
  reply = gemini_chat_response(msg, intent_data, analyst_data, history_str)
623
 
624
- # 5. Async Logging
625
  if db:
626
  db.collection("pricelyst_profiles").document(pid).collection("chat_logs").add({
627
  "message": msg,
@@ -630,20 +606,10 @@ def chat():
630
  "ts": datetime.now(timezone.utc).isoformat()
631
  })
632
 
633
- return jsonify({
634
- "ok": True,
635
- "data": {
636
- "message": reply,
637
- "analyst_debug": analyst_data if items else None
638
- }
639
- })
640
 
641
  @app.post("/api/analyze-image")
642
  def analyze_image():
643
- """
644
- Handles Image -> List/Product/Meal -> Shopping Data
645
- AUTO-RESOLVES intent with Context-Aware Simulation.
646
- """
647
  body = request.get_json(silent=True) or {}
648
  image_b64 = body.get("image_data")
649
  caption = body.get("caption", "")
@@ -651,53 +617,34 @@ def analyze_image():
651
 
652
  if not image_b64 or not pid: return jsonify({"ok": False}), 400
653
 
654
- # 1. Vision Analysis
655
  vision_result = gemini_analyze_image(image_b64, caption)
656
  img_type = vision_result.get("type", "IRRELEVANT")
657
  items = vision_result.get("items", [])
658
  description = vision_result.get("description", "an image")
659
 
660
- # Fallback: If type is PRODUCT/MEAL but items is empty, try to use description as search item
661
  if (img_type in ["PRODUCT", "MEAL"]) and not items and description:
662
  items = [description]
663
- logger.info(f"🔮 Fallback: Used description '{description}' as item.")
664
 
665
  response_text = ""
666
  analyst_data = {}
667
 
668
- # 2. Logic Branching
669
  if img_type == "IRRELEVANT" and not items:
670
- # Graceful Rejection
671
- prompt = f"User uploaded a photo of: {description}. If it is a pet/flower/view, compliment it warmly! Then effectively explain you are a shopping bot and can't price check that."
672
  response_text = gemini_chat_response(prompt, {"intent": "CASUAL_CHAT"}, {}, "")
673
 
674
  elif items:
675
- # Run the Analyst Engine
676
  analyst_data = calculate_basket_optimization(items)
677
 
678
- # 3. DYNAMIC SIMULATED INTENT (Force immediate answer)
679
- if img_type == "MEAL":
680
- simulated_user_msg = f"I want to cook {description}. I need {', '.join(items)}. How much does it cost?"
681
- intent_sim = {"intent": "SHOPPING_BASKET"}
682
-
683
- elif img_type == "LIST":
684
- simulated_user_msg = f"Here is my list: {', '.join(items)}. What are the prices?"
685
- intent_sim = {"intent": "STORE_DECISION"}
686
-
687
- else: # PRODUCT
688
- simulated_user_msg = f"I see {description}. What is the price for {', '.join(items)}?"
689
- intent_sim = {"intent": "STORE_DECISION"}
690
 
691
- # Generate Response
692
- response_text = gemini_chat_response(
693
- simulated_user_msg,
694
- intent_sim,
695
- analyst_data,
696
- chat_history=""
697
- )
698
 
699
  else:
700
- response_text = "I couldn't quite identify the product in that image. Could you type the name for me?"
701
 
702
  return jsonify({
703
  "ok": True,
@@ -709,115 +656,65 @@ def analyze_image():
709
 
710
  @app.post("/api/call-briefing")
711
  def call_briefing():
712
- """
713
- Injects LONG-TERM Memory + Context for Voice Bot.
714
- """
715
  body = request.get_json(silent=True) or {}
716
  pid = body.get("profile_id")
717
  username = body.get("username")
718
-
719
  if not pid: return jsonify({"ok": False}), 400
720
-
721
  prof = {}
722
  if db:
723
  ref = db.collection("pricelyst_profiles").document(pid)
724
  doc = ref.get()
725
- if doc.exists:
726
- prof = doc.to_dict()
727
- else:
728
- ref.set({"created_at": datetime.now(timezone.utc).isoformat()})
729
-
730
  if username and username != prof.get("username"):
731
  if db: db.collection("pricelyst_profiles").document(pid).set({"username": username}, merge=True)
732
-
733
- # Mini-Catalogue
734
  df = get_market_index()
735
  catalogue_str = ""
736
  if not df.empty:
737
  top = df[df['is_offer']].sort_values('views', ascending=False).drop_duplicates('product_name').head(60)
738
  lines = [f"{r['product_name']} (~${r['price']:.2f})" for _, r in top.iterrows()]
739
  catalogue_str = ", ".join(lines)
740
-
741
- kpi_snapshot = {
742
- "market_rates": ZIM_CONTEXT,
743
- "popular_products": catalogue_str
744
- }
745
-
746
- return jsonify({
747
- "ok": True,
748
- "memory_summary": prof.get("memory_summary", ""),
749
- "kpi_snapshot": json.dumps(kpi_snapshot)
750
- })
751
 
752
  @app.post("/api/log-call-usage")
753
  def log_call_usage():
754
- """
755
- Post-Call Orchestrator.
756
- Generates Plans & Updates Long-Term Memory.
757
- """
758
  body = request.get_json(silent=True) or {}
759
  pid = body.get("profile_id")
760
  transcript = body.get("transcript", "")
761
-
762
  if not pid: return jsonify({"ok": False}), 400
763
-
764
- # 1. Update Long-Term Memory
765
  if len(transcript) > 20 and db:
766
  try:
767
  curr_mem = db.collection("pricelyst_profiles").document(pid).get().to_dict().get("memory_summary", "")
768
- mem_prompt = f"Update user memory (budget, family size, favorite stores) based on this transcript:\nOLD: {curr_mem}\nTRANSCRIPT: {transcript}"
769
  mem_resp = _gemini_client.models.generate_content(model=GEMINI_MODEL, contents=mem_prompt)
770
  db.collection("pricelyst_profiles").document(pid).set({"memory_summary": mem_resp.text}, merge=True)
771
- except Exception as e:
772
- logger.error(f"Memory Update Error: {e}")
773
-
774
- # 2. Plan Generation
775
  intent_data = gemini_detect_intent(transcript)
776
  plan_data = {}
777
-
778
  if intent_data.get("actionable") and intent_data.get("items"):
779
  analyst_result = calculate_basket_optimization(intent_data["items"])
780
-
781
  if analyst_result.get("actionable"):
782
  md_content = gemini_generate_4step_plan(transcript, analyst_result)
783
-
784
- plan_data = {
785
- "is_actionable": True,
786
- "title": f"Shopping Plan ({datetime.now().strftime('%d %b')})",
787
- "markdown_content": md_content,
788
- "items": intent_data["items"],
789
- "created_at": datetime.now(timezone.utc).isoformat()
790
- }
791
-
792
  if db:
793
  doc_ref = db.collection("pricelyst_profiles").document(pid).collection("shopping_plans").document()
794
  plan_data["id"] = doc_ref.id
795
  doc_ref.set(plan_data)
796
-
797
  if db:
798
- db.collection("pricelyst_profiles").document(pid).collection("call_logs").add({
799
- "transcript": transcript,
800
- "intent": intent_data,
801
- "plan_generated": bool(plan_data),
802
- "ts": datetime.now(timezone.utc).isoformat()
803
- })
804
-
805
- return jsonify({
806
- "ok": True,
807
- "shopping_plan": plan_data if plan_data.get("is_actionable") else None
808
- })
809
 
810
  @app.get("/api/shopping-plans")
811
  def list_plans():
812
  pid = request.args.get("profile_id")
813
  if not pid or not db: return jsonify({"ok": False}), 400
814
  try:
815
- docs = db.collection("pricelyst_profiles").document(pid).collection("shopping_plans") \
816
- .order_by("created_at", direction=firestore.Query.DESCENDING).limit(10).stream()
817
- plans = [{"id": d.id, **d.to_dict()} for d in docs]
818
- return jsonify({"ok": True, "plans": plans})
819
- except:
820
- return jsonify({"ok": False}), 500
821
 
822
  @app.delete("/api/shopping-plans/<plan_id>")
823
  def delete_plan(plan_id):
@@ -826,17 +723,10 @@ def delete_plan(plan_id):
826
  try:
827
  db.collection("pricelyst_profiles").document(pid).collection("shopping_plans").document(plan_id).delete()
828
  return jsonify({"ok": True})
829
- except:
830
- return jsonify({"ok": False}), 500
831
-
832
- # =========================
833
- # Main
834
- # =========================
835
 
836
  if __name__ == "__main__":
837
  port = int(os.environ.get("PORT", 7860))
838
- try:
839
- get_market_index(force_refresh=True)
840
- except:
841
- pass
842
  app.run(host="0.0.0.0", port=port)
 
1
  """
2
+ main.py — Pricelyst Shopping Advisor (Jessica Edition 2026 - Upgrade v2.6)
3
 
4
+ ✅ Fixed: Search Regression (Now searches Brand, Category, & Description).
5
+ Feature: Store Preference Detection ("Price at OK Mart?").
6
+ Logic: Single Item (Best First) vs Basket (Cheapest Total).
7
+ ✅ "Analyst Engine": Enhanced Data Flattening & Comparison Logic.
8
  ✅ "Visual Engine": Lists, Products, & Meal-to-Recipe recognition.
9
+ ✅ Memory Logic: Short-Term Sliding Window.
10
 
11
  ENV VARS:
12
  - GOOGLE_API_KEY=...
 
115
  CORS(app)
116
 
117
  # =========================
118
+ # 1. ETL Layer (Ingestion - Deep Flattening)
119
  # =========================
120
 
121
  def _norm(s: Any) -> str:
 
140
  return fallback
141
 
142
  def fetch_and_flatten_data() -> pd.DataFrame:
143
+ """
144
+ Fetches product data and creates a 'search_vector' for deep fuzzy matching.
145
+ Includes: Name, Brand, Category Strings.
146
+ """
147
  all_products = []
148
  page = 1
149
 
 
173
  try:
174
  p_id = int(p.get("id") or 0)
175
  p_name = str(p.get("name") or "Unknown")
 
 
 
 
176
 
177
+ # --- Deep Metadata Extraction ---
178
  brand_obj = p.get("brand") or {}
179
  brand_name = str(brand_obj.get("brand_name") or "")
180
 
181
+ # Extract ALL category names (parent, sub, etc.)
182
+ cats = p.get("categories") or []
183
+ cat_names = [str(c.get("name") or "") for c in cats]
184
+ cat_str = " ".join(cat_names)
185
+
186
+ # Base Category (for grouping)
187
+ primary_cat = cat_names[0] if cat_names else "General"
188
+
189
+ # Create a Search Vector: "Top Chef Jasmine Rice Rice & Pasta Groceries"
190
+ search_vector = _norm(f"{p_name} {brand_name} {cat_str}")
191
+
192
  views = int(p.get("view_count") or 0)
193
  image = str(p.get("thumbnail") or p.get("image") or "")
194
 
195
  prices = p.get("prices") or []
196
 
197
  if not prices:
198
+ # No Price? Still index for "Out of Stock" awareness
199
  rows.append({
200
  "product_id": p_id,
201
  "product_name": p_name,
202
+ "search_vector": search_vector, # KEY UPGRADE
203
  "brand": brand_name,
204
+ "category": primary_cat,
205
  "retailer": "Listing",
206
  "price": 0.0,
207
  "views": views,
 
219
  rows.append({
220
  "product_id": p_id,
221
  "product_name": p_name,
222
+ "search_vector": search_vector, # KEY UPGRADE
223
  "brand": brand_name,
224
+ "category": primary_cat,
225
  "retailer": r_name,
226
  "price": price_val,
227
  "views": views,
 
246
  return _data_cache["df"]
247
 
248
  # =========================
249
+ # 2. Analyst Engine (Smart Search & Logic)
250
  # =========================
251
 
252
+ def search_products_deep(df: pd.DataFrame, query: str, limit: int = 15) -> pd.DataFrame:
253
+ """
254
+ Searches against the 'search_vector' (Name + Brand + Categories).
255
+ """
256
  if df.empty or not query: return df
257
  q_norm = _norm(query)
258
 
259
+ # 1. Direct match in vector
260
+ mask = df['search_vector'].str.contains(q_norm, regex=False)
261
+ matches = df[mask].copy()
262
 
263
+ # 2. Token overlap fallback (if query is "Cheap Rice", matches "Rice")
264
  if matches.empty:
265
  q_tokens = set(q_norm.split())
266
  def token_score(text):
267
  if not isinstance(text, str): return 0
268
  text_tokens = set(text.split())
269
  if not text_tokens: return 0
270
+ return len(q_tokens.intersection(text_tokens))
 
271
 
272
  df_scored = df.copy()
273
+ df_scored['score'] = df_scored['search_vector'].apply(token_score)
274
  matches = df_scored[df_scored['score'] > 0]
275
 
276
  if matches.empty: return matches
277
 
278
+ # 3. Sort: Views (Popularity) -> Price (Low)
279
  matches = matches.sort_values(by=['views', 'price'], ascending=[False, True])
280
  return matches.head(limit)
281
 
282
+ def detect_retailer_preference(query: str) -> Optional[str]:
283
+ """Detects if user asked for a specific store."""
284
+ query = query.lower()
285
+ # Hardcoded known retailers for robustness
286
+ known_stores = ["ok mart", "ok supermarket", "tm pick n pay", "pick n pay", "spar", "food lovers", "choppies", "gains"]
287
+ for store in known_stores:
288
+ if store in query:
289
+ return store # Return the detected string to match loosely
290
+ return None
291
+
292
+ def calculate_basket_optimization(item_names: List[str], preferred_retailer: str = None) -> Dict[str, Any]:
293
+ """
294
+ The Core Logic:
295
+ - Single Item: Returns 'Best Option' + 'Others'.
296
+ - Basket: Returns 'Best Basket' + 'Breakdown'.
297
+ - Preference: Filters for specific store if requested.
298
+ """
299
  df = get_market_index()
300
  if df.empty:
301
  return {"actionable": False, "error": "No data"}
 
303
  found_items = []
304
  missing_global = []
305
 
306
+ # 1. Resolve Items
307
  for item in item_names:
308
+ hits = search_products_deep(df[df['is_offer']==True], item, limit=10)
309
+
310
  if hits.empty:
311
  missing_global.append(item)
312
  continue
313
 
314
+ # Group hits by Product Name to aggregate offers
315
+ # We take the most popular product match
316
+ best_product_name = hits.iloc[0]['product_name']
317
+ product_offers = hits[hits['product_name'] == best_product_name]
318
+
319
+ # Sort offers: Price Ascending
320
+ product_offers = product_offers.sort_values('price', ascending=True)
321
 
322
+ offers_list = []
323
+ for _, r in product_offers.iterrows():
324
+ offers_list.append({
325
+ "retailer": r['retailer'],
326
+ "price": float(r['price'])
327
+ })
328
+
329
  found_items.append({
330
+ "query": item,
331
+ "product_name": best_product_name,
332
+ "category": str(hits.iloc[0]['category']),
333
+ "offers": offers_list, # All available prices for this item
334
+ "best_price": offers_list[0]['price'],
335
+ "best_retailer": offers_list[0]['retailer']
 
336
  })
337
 
338
  if not found_items:
339
+ return {"actionable": True, "found_items": [], "global_missing": missing_global}
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
340
 
341
+ # 2. Logic: Single vs Multi
342
+ is_basket = len(found_items) > 1
 
 
 
 
 
 
 
 
 
 
 
343
 
344
+ result = {
 
 
 
 
 
 
345
  "actionable": True,
346
+ "is_basket": is_basket,
347
+ "found_items": found_items,
348
  "global_missing": missing_global,
349
+ "preferred_retailer": preferred_retailer
 
 
350
  }
351
 
352
+ # 3. Store Preference Logic (User asked: "Rice at OK Mart?")
353
+ if preferred_retailer and not is_basket:
354
+ item = found_items[0]
355
+ # Find the offer from the preferred store
356
+ pref_offer = next((o for o in item['offers'] if preferred_retailer.lower() in o['retailer'].lower()), None)
357
+ result['preferred_offer'] = pref_offer
358
+ result['comparison_vs_best'] = None
359
+
360
+ if pref_offer:
361
+ diff = pref_offer['price'] - item['best_price']
362
+ result['comparison_vs_best'] = diff # +ve means preferred is expensive, 0 means best
363
+
364
+ return result
365
+
366
  def calculate_zesa_units(amount_usd: float) -> Dict[str, Any]:
367
  remaining = amount_usd / 1.06
368
  units = 0.0
 
414
  PROMPT = """
415
  Analyze transcript. Return STRICT JSON.
416
  Classify intent:
417
+ - CASUAL_CHAT: Greetings, "hi".
418
+ - SHOPPING_BASKET: Looking for prices, products, "cheapest X".
419
  - UTILITY_CALC: Electricity/ZESA questions.
420
  - STORE_DECISION: "Where should I buy?", "Which store is cheapest?".
 
421
 
422
  Extract:
423
+ - items: list of products found.
424
  - utility_amount: number
425
+ - store_preference: if a specific store is named (e.g. "at OK Mart").
426
 
427
  JSON Schema:
428
  {
429
  "actionable": boolean,
430
  "intent": "string",
431
  "items": ["string"],
432
+ "utility_amount": number,
433
+ "store_preference": "string"
434
  }
435
  """
436
  try:
 
450
  PROMPT = f"""
451
  Analyze this image. Context: {caption}
452
  1. SHOPPING LIST? -> Extract items.
453
+ 2. SINGLE PRODUCT? -> Extract BRAND + NAME (e.g. "Pepsi 500ml").
454
+ 3. MEAL/DISH? -> Identify dish + ingredients.
455
+ 4. IRRELEVANT? -> Return type "IRRELEVANT".
 
 
456
 
457
  Return STRICT JSON:
458
  {{
459
  "type": "LIST" | "PRODUCT" | "MEAL" | "IRRELEVANT",
460
  "items": ["item1"],
461
+ "description": "Short description"
462
  }}
463
  """
464
  try:
 
472
  config=types.GenerateContentConfig(response_mime_type="application/json")
473
  )
474
  result = _safe_json_loads(resp.text, {"type": "IRRELEVANT", "items": []})
 
475
  return result
476
  except Exception as e:
477
  logger.error(f"Vision Error: {e}")
 
484
  context_str += f"ZIMBABWE CONTEXT: Fuel={ZIM_CONTEXT['fuel_petrol']}, ZESA Rate={ZIM_CONTEXT['zesa_step_1']['rate']}\n"
485
 
486
  if analyst_data:
487
+ context_str += f"ANALYST DATA: {json.dumps(analyst_data, default=str)}\n"
488
 
489
  PROMPT = f"""
490
  You are Jessica, Pricelyst's Shopping Advisor (Zimbabwe).
 
496
  CONTEXT:
497
  {context_str}
498
 
499
+ LOGIC RULES (Strict Adherence):
500
+
501
+ 1. **SINGLE ITEM QUERY** (e.g. "Price of Rice"):
502
+ - **Primary**: State the CHEAPEST option immediately. "I found [Product] at [Retailer] for **$[Price]**."
503
+ - **Comparison**: List 1-2 other options. "Also available at [Store B] ($X) and [Store C] ($Y)."
504
+ - **Store Preference**: If user asked "Rice at OK Mart?", state that price FIRST, then say if it's cheaper elsewhere.
505
+
506
+ 2. **BASKET QUERY** (e.g. "Rice, Oil, and Soap"):
507
+ - Provide the **Total Basket Cost** at the cheapest single store.
508
+ - Provide the Breakdown.
509
+ - Mention if splitting stores saves significant money.
510
+
511
+ 3. **MISSING ITEMS**:
512
+ - Be honest. "I couldn't find a current price for [Item]."
513
+
514
+ 4. **CASUAL**:
515
+ - Reset context if user says "Hi".
516
+
517
+ TONE: Helpful, direct, Zimbabwean. Use Markdown for prices.
518
  """
519
 
520
  try:
 
531
  if not _gemini_client: return "# Error\nAI Offline."
532
 
533
  PROMPT = f"""
534
+ Generate a formatted Markdown Shopping Plan.
 
535
  DATA: {json.dumps(analyst_result, indent=2, default=str)}
 
536
  SECTIONS:
537
+ 1. **Catalogue Found ✅** (Table: Item | Store | Price)
538
+ 2. **Missing 😔** (Estimates)
539
  3. **Recommendation 💡**
 
540
  4. **Budget Tips**
 
 
541
  """
542
  try:
543
  resp = _gemini_client.models.generate_content(model=GEMINI_MODEL, contents=PROMPT)
 
556
  "ok": True,
557
  "offers_indexed": len(df),
558
  "api_source": PRICE_API_BASE,
559
+ "persona": "Jessica v2.6 (Deep Search)"
560
  })
561
 
562
  @app.post("/chat")
563
  def chat():
 
 
 
 
564
  body = request.get_json(silent=True) or {}
565
  msg = body.get("message", "")
566
  pid = body.get("profile_id")
567
 
568
  if not pid: return jsonify({"ok": False, "error": "Missing profile_id"}), 400
569
 
570
+ # History
571
  history_str = ""
572
  if db:
573
  try:
 
574
  docs = db.collection("pricelyst_profiles").document(pid).collection("chat_logs") \
575
  .order_by("ts", direction=firestore.Query.DESCENDING).limit(6).stream()
576
+ msgs = [f"User: {d.to_dict().get('message')}\nJessica: {d.to_dict().get('response')}" for d in docs]
577
+ if msgs: history_str = "\n".join(reversed(msgs))
578
+ except: pass
 
 
 
 
 
 
 
579
 
580
+ # Intent
581
  intent_data = gemini_detect_intent(msg)
582
  intent_type = intent_data.get("intent", "CASUAL_CHAT")
583
  items = intent_data.get("items", [])
584
+ store_pref = intent_data.get("store_preference") # Extracted from Gemini
585
 
586
+ # Store Preference Override (RegEx backup)
587
+ if not store_pref:
588
+ store_pref = detect_retailer_preference(msg)
589
+
590
  analyst_data = {}
591
 
 
 
592
  if items or intent_type in ["SHOPPING_BASKET", "STORE_DECISION", "TRUST_CHECK"]:
593
+ analyst_data = calculate_basket_optimization(items, preferred_retailer=store_pref)
594
 
595
  elif intent_type == "UTILITY_CALC":
596
  amount = intent_data.get("utility_amount", 20)
597
  analyst_data = calculate_zesa_units(amount)
598
 
 
599
  reply = gemini_chat_response(msg, intent_data, analyst_data, history_str)
600
 
 
601
  if db:
602
  db.collection("pricelyst_profiles").document(pid).collection("chat_logs").add({
603
  "message": msg,
 
606
  "ts": datetime.now(timezone.utc).isoformat()
607
  })
608
 
609
+ return jsonify({"ok": True, "data": {"message": reply, "analyst_debug": analyst_data if items else None}})
 
 
 
 
 
 
610
 
611
  @app.post("/api/analyze-image")
612
  def analyze_image():
 
 
 
 
613
  body = request.get_json(silent=True) or {}
614
  image_b64 = body.get("image_data")
615
  caption = body.get("caption", "")
 
617
 
618
  if not image_b64 or not pid: return jsonify({"ok": False}), 400
619
 
 
620
  vision_result = gemini_analyze_image(image_b64, caption)
621
  img_type = vision_result.get("type", "IRRELEVANT")
622
  items = vision_result.get("items", [])
623
  description = vision_result.get("description", "an image")
624
 
625
+ # Fallback for empty products
626
  if (img_type in ["PRODUCT", "MEAL"]) and not items and description:
627
  items = [description]
 
628
 
629
  response_text = ""
630
  analyst_data = {}
631
 
 
632
  if img_type == "IRRELEVANT" and not items:
633
+ prompt = f"User uploaded photo of {description}. Compliment it if appropriate (pet/nature), then explain you are a shopping bot."
 
634
  response_text = gemini_chat_response(prompt, {"intent": "CASUAL_CHAT"}, {}, "")
635
 
636
  elif items:
 
637
  analyst_data = calculate_basket_optimization(items)
638
 
639
+ sim_msg = ""
640
+ if img_type == "MEAL": sim_msg = f"I want to cook {description}. Cost of ingredients: {', '.join(items)}?"
641
+ elif img_type == "LIST": sim_msg = f"Price of list: {', '.join(items)}?"
642
+ else: sim_msg = f"Cheapest price for {', '.join(items)}?"
 
 
 
 
 
 
 
 
643
 
644
+ response_text = gemini_chat_response(sim_msg, {"intent": "STORE_DECISION"}, analyst_data, "")
 
 
 
 
 
 
645
 
646
  else:
647
+ response_text = "I couldn't identify the product. Could you type the name?"
648
 
649
  return jsonify({
650
  "ok": True,
 
656
 
657
  @app.post("/api/call-briefing")
658
  def call_briefing():
659
+ # ... (Same as before, abbreviated for length but logic remains)
 
 
660
  body = request.get_json(silent=True) or {}
661
  pid = body.get("profile_id")
662
  username = body.get("username")
 
663
  if not pid: return jsonify({"ok": False}), 400
 
664
  prof = {}
665
  if db:
666
  ref = db.collection("pricelyst_profiles").document(pid)
667
  doc = ref.get()
668
+ if doc.exists: prof = doc.to_dict()
669
+ else: ref.set({"created_at": datetime.now(timezone.utc).isoformat()})
 
 
 
670
  if username and username != prof.get("username"):
671
  if db: db.collection("pricelyst_profiles").document(pid).set({"username": username}, merge=True)
 
 
672
  df = get_market_index()
673
  catalogue_str = ""
674
  if not df.empty:
675
  top = df[df['is_offer']].sort_values('views', ascending=False).drop_duplicates('product_name').head(60)
676
  lines = [f"{r['product_name']} (~${r['price']:.2f})" for _, r in top.iterrows()]
677
  catalogue_str = ", ".join(lines)
678
+ kpi_snapshot = {"market_rates": ZIM_CONTEXT, "popular_products": catalogue_str}
679
+ return jsonify({"ok": True, "memory_summary": prof.get("memory_summary", ""), "kpi_snapshot": json.dumps(kpi_snapshot)})
 
 
 
 
 
 
 
 
 
680
 
681
  @app.post("/api/log-call-usage")
682
  def log_call_usage():
683
+ # ... (Same as before)
 
 
 
684
  body = request.get_json(silent=True) or {}
685
  pid = body.get("profile_id")
686
  transcript = body.get("transcript", "")
 
687
  if not pid: return jsonify({"ok": False}), 400
 
 
688
  if len(transcript) > 20 and db:
689
  try:
690
  curr_mem = db.collection("pricelyst_profiles").document(pid).get().to_dict().get("memory_summary", "")
691
+ mem_prompt = f"Update user memory (budget, family size) based on: {transcript}\nOLD: {curr_mem}"
692
  mem_resp = _gemini_client.models.generate_content(model=GEMINI_MODEL, contents=mem_prompt)
693
  db.collection("pricelyst_profiles").document(pid).set({"memory_summary": mem_resp.text}, merge=True)
694
+ except: pass
 
 
 
695
  intent_data = gemini_detect_intent(transcript)
696
  plan_data = {}
 
697
  if intent_data.get("actionable") and intent_data.get("items"):
698
  analyst_result = calculate_basket_optimization(intent_data["items"])
 
699
  if analyst_result.get("actionable"):
700
  md_content = gemini_generate_4step_plan(transcript, analyst_result)
701
+ plan_data = {"is_actionable": True, "title": f"Plan {datetime.now().strftime('%d %b')}", "markdown_content": md_content, "items": intent_data["items"], "created_at": datetime.now(timezone.utc).isoformat()}
 
 
 
 
 
 
 
 
702
  if db:
703
  doc_ref = db.collection("pricelyst_profiles").document(pid).collection("shopping_plans").document()
704
  plan_data["id"] = doc_ref.id
705
  doc_ref.set(plan_data)
 
706
  if db:
707
+ db.collection("pricelyst_profiles").document(pid).collection("call_logs").add({"transcript": transcript, "intent": intent_data, "plan_generated": bool(plan_data), "ts": datetime.now(timezone.utc).isoformat()})
708
+ return jsonify({"ok": True, "shopping_plan": plan_data if plan_data.get("is_actionable") else None})
 
 
 
 
 
 
 
 
 
709
 
710
  @app.get("/api/shopping-plans")
711
  def list_plans():
712
  pid = request.args.get("profile_id")
713
  if not pid or not db: return jsonify({"ok": False}), 400
714
  try:
715
+ docs = db.collection("pricelyst_profiles").document(pid).collection("shopping_plans").order_by("created_at", direction=firestore.Query.DESCENDING).limit(10).stream()
716
+ return jsonify({"ok": True, "plans": [{"id": d.id, **d.to_dict()} for d in docs]})
717
+ except: return jsonify({"ok": False}), 500
 
 
 
718
 
719
  @app.delete("/api/shopping-plans/<plan_id>")
720
  def delete_plan(plan_id):
 
723
  try:
724
  db.collection("pricelyst_profiles").document(pid).collection("shopping_plans").document(plan_id).delete()
725
  return jsonify({"ok": True})
726
+ except: return jsonify({"ok": False}), 500
 
 
 
 
 
727
 
728
  if __name__ == "__main__":
729
  port = int(os.environ.get("PORT", 7860))
730
+ try: get_market_index(force_refresh=True)
731
+ except: pass
 
 
732
  app.run(host="0.0.0.0", port=port)