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app.py

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+import os
+import re
+import json
+from fastapi import FastAPI, Request
+from pydantic import BaseModel
+from langchain_community.vectorstores import Chroma
+from langchain_community.embeddings import HuggingFaceEmbeddings
+from langchain_groq import ChatGroq
+from langchain_core.documents import Document
+from langchain_core.prompts import PromptTemplate
+from langchain_core.output_parsers import StrOutputParser
+from langchain_core.runnables import RunnableMap, RunnableLambda, RunnableSequence
+from ratelimit import limits, sleep_and_retry
+
+# === Constants ===
+DATA_FILE = "data/big_prize_data.json"
+CHROMA_PATH = "chroma_db"
+
+# === Load Data and Build Chroma DB ===
+def build_chroma_db():
+    with open(DATA_FILE, "r") as f:
+        raw_data = json.load(f)
+
+    docs = []
+    for d in raw_data:
+        content = (
+            f"Raffle {d['raffle']} | Prize: {d['prize']} | "
+            f"Value: {d['value']} | Ticket: {d['approx_tickets_sold']} | "
+            f"Percent path: {d['percent_path']}% | Ticket Price: £{d['ticket_price']}"
+        )
+        metadata = {
+            "raffle": d["raffle"],
+            "prize": d["prize"],
+            "value": float(d["value"]),
+            "tickets_sold": d["approx_tickets_sold"],
+            "percent_path": float(d["percent_path"]),
+            "ticket_price": float(d.get("ticket_price", 0))
+        }
+        docs.append(Document(page_content=content, metadata=metadata))
+
+    embedding_model = HuggingFaceEmbeddings(model_name="all-MiniLM-L6-v2")
+    return Chroma.from_documents(docs, embedding_model)
+
+db = build_chroma_db()
+
+# === LLM and Prompt ===
+llm = ChatGroq(
+    api_key=os.environ.get("GROQ_API_KEY", "sk-..."),
+    model="llama3-8b-8192"
+)
+
+question_prompt = PromptTemplate(
+    input_variables=["context", "question"],
+    template="""
+You are a calm, professional assistant specialized in analyzing instant-win raffles.
+You base your answers on structured historical data like:
+"Raffle 75 | Prize: BMW M3 | Value: 45000.0 | Ticket: 219784 | Percent path: 81.62% | Ticket Price: £1.99"
+
+If the user asks for a list of prizes above a certain amount, compare the numeric "Value" field.
+Only include entries that clearly exceed the requested threshold. Do not say these are the only ones unless you're sure.
+Always respond clearly and politely.
+
+Context:
+{context}
+
+Now, based on this data, answer:
+{question}
+"""
+)
+
+# === Extraction and Filtering ===
+def extract_threshold(input_data) -> float | None:
+    question = input_data.get("question", "") if isinstance(input_data, dict) else str(input_data)
+    matches = re.findall(r"(?:above|over|more than|greater than)\s*£?([\d,]+)", question, re.IGNORECASE)
+    for match in matches:
+        try:
+            return float(match.replace(",", ""))
+        except ValueError:
+            continue
+    return None
+
+def filter_docs(inputs):
+    docs = inputs["documents"]
+    question = inputs["question"]
+    threshold = extract_threshold(question)
+    if threshold is None:
+        return inputs
+    filtered = [doc for doc in docs if float(doc.metadata.get("value", 0)) > threshold]
+    return {"documents": filtered, "question": question}
+
+retrieval_chain = (
+    RunnableMap({
+        "documents": db.as_retriever(search_type="similarity", k=300),
+        "question": lambda x: x["question"]
+    })
+    | RunnableLambda(filter_docs)
+    | (lambda d: {
+        "context": "\n".join(doc.page_content for doc in d["documents"]),
+        "question": d["question"]
+    })
+    | question_prompt
+    | llm
+    | StrOutputParser()
+)
+
+# === FastAPI App ===
+app = FastAPI()
+
+class QuestionRequest(BaseModel):
+    question: str
+
+@app.get("/")
+def read_root():
+    return {"message": "Raffle Analysis Assistant is running!"}
+
+@app.post("/ask")
+def ask_question(payload: QuestionRequest):
+    try:
+        result = retrieval_chain.invoke(payload.question)
+        return {"response": result}
+    except Exception as e:
+        return {"error": str(e)}

data/big_prize_data.json

@@ -0,0 +1,1082 @@
+[
+  {
+    "raffle": 55,
+    "prize": "\u00a35,000 Cash",
+    "value": 5000.0,
+    "ticket_price": 1.99,
+    "win_sequence": 548,
+    "percent_path": 2.68,
+    "approx_tickets_sold": 7615,
+    "approx_value_at_win": 15154.11
+  },
+  {
+    "raffle": 57,
+    "prize": "\u00a35,000 Cash",
+    "value": 5000.0,
+    "ticket_price": 1.5,
+    "win_sequence": 8393,
+    "percent_path": 63.5,
+    "approx_tickets_sold": 91846,
+    "approx_value_at_win": 137768.26
+  },
+  {
+    "raffle": 64,
+    "prize": "\u00a35,000 Cash",
+    "value": 5000.0,
+    "ticket_price": 0.6,
+    "win_sequence": 20604,
+    "percent_path": 90.83,
+    "approx_tickets_sold": 336057,
+    "approx_value_at_win": 201634.16
+  },
+  {
+    "raffle": 62,
+    "prize": "\u00a35,000 Cash",
+    "value": 5000.0,
+    "ticket_price": 0.6,
+    "win_sequence": 6368,
+    "percent_path": 27.13,
+    "approx_tickets_sold": 102424,
+    "approx_value_at_win": 61454.6
+  },
+  {
+    "raffle": 65,
+    "prize": "\u00a35,000 Cash",
+    "value": 5000.0,
+    "ticket_price": 1.79,
+    "win_sequence": 13149,
+    "percent_path": 69.29,
+    "approx_tickets_sold": 72248,
+    "approx_value_at_win": 129324.78
+  },
+  {
+    "raffle": 77,
+    "prize": "\u00a35,000 Cash",
+    "value": 5000.0,
+    "ticket_price": 0.6,
+    "win_sequence": 3353,
+    "percent_path": 22.25,
+    "approx_tickets_sold": 56388,
+    "approx_value_at_win": 33832.84
+  },
+  {
+    "raffle": 75,
+    "prize": "\u00a35,000 Cash",
+    "value": 5000.0,
+    "ticket_price": 0.69,
+    "win_sequence": 12983,
+    "percent_path": 66.06,
+    "approx_tickets_sold": 177907,
+    "approx_value_at_win": 122755.92
+  },
+  {
+    "raffle": 70,
+    "prize": "\u00a35,000 Cash",
+    "value": 5000.0,
+    "ticket_price": 0.59,
+    "win_sequence": 16317,
+    "percent_path": 95.54,
+    "approx_tickets_sold": 271882,
+    "approx_value_at_win": 160410.29
+  },
+  {
+    "raffle": 80,
+    "prize": "\u00a35,000 Cash",
+    "value": 5000.0,
+    "ticket_price": 1.5,
+    "win_sequence": 21748,
+    "percent_path": 92.33,
+    "approx_tickets_sold": 138810,
+    "approx_value_at_win": 208214.89
+  },
+  {
+    "raffle": 79,
+    "prize": "\u00a35,000 Cash",
+    "value": 5000.0,
+    "ticket_price": 0.6,
+    "win_sequence": 17050,
+    "percent_path": 97.25,
+    "approx_tickets_sold": 269217,
+    "approx_value_at_win": 161529.91
+  },
+  {
+    "raffle": 56,
+    "prize": "Suzuki GSX-R 750",
+    "value": 7250.0,
+    "ticket_price": 0.84,
+    "win_sequence": 13464,
+    "percent_path": 86.81,
+    "approx_tickets_sold": 332094,
+    "approx_value_at_win": 278958.77
+  },
+  {
+    "raffle": 63,
+    "prize": "Suzuki GSX-R 750",
+    "value": 7250.0,
+    "ticket_price": 1.99,
+    "win_sequence": 17710,
+    "percent_path": 95.2,
+    "approx_tickets_sold": 160019,
+    "approx_value_at_win": 318438.41
+  },
+  {
+    "raffle": 82,
+    "prize": "Suzuki GSX-R 750",
+    "value": 7312.09,
+    "ticket_price": 0.55,
+    "win_sequence": 7601,
+    "percent_path": 47.28,
+    "approx_tickets_sold": 127662,
+    "approx_value_at_win": 70213.84
+  },
+  {
+    "raffle": 60,
+    "prize": "100g Gold Bar",
+    "value": 7500.0,
+    "ticket_price": 0.59,
+    "win_sequence": 5488,
+    "percent_path": 30.75,
+    "approx_tickets_sold": 92669,
+    "approx_value_at_win": 54674.57
+  },
+  {
+    "raffle": 59,
+    "prize": "Husqvarna 701 Supermoto",
+    "value": 7590.0,
+    "ticket_price": 0.65,
+    "win_sequence": 2185,
+    "percent_path": 20.86,
+    "approx_tickets_sold": 46994,
+    "approx_value_at_win": 30545.88
+  },
+  {
+    "raffle": 75,
+    "prize": "KTM 690 SMCR",
+    "value": 7800.0,
+    "ticket_price": 0.69,
+    "win_sequence": 9194,
+    "percent_path": 46.78,
+    "approx_tickets_sold": 125986,
+    "approx_value_at_win": 86930.44
+  },
+  {
+    "raffle": 67,
+    "prize": "100g Gold Bar",
+    "value": 8000.0,
+    "ticket_price": 1.59,
+    "win_sequence": 6872,
+    "percent_path": 26.63,
+    "approx_tickets_sold": 42490,
+    "approx_value_at_win": 67558.95
+  },
+  {
+    "raffle": 81,
+    "prize": "100g Gold Bar",
+    "value": 8000.0,
+    "ticket_price": 1.99,
+    "win_sequence": 15446,
+    "percent_path": 94.78,
+    "approx_tickets_sold": 64529,
+    "approx_value_at_win": 128412.26
+  },
+  {
+    "raffle": 56,
+    "prize": "KTM SXF-250",
+    "value": 8552.0,
+    "ticket_price": 0.84,
+    "win_sequence": 9398,
+    "percent_path": 60.59,
+    "approx_tickets_sold": 231805,
+    "approx_value_at_win": 194715.87
+  },
+  {
+    "raffle": 55,
+    "prize": "Ducati Panigale 899",
+    "value": 8990.0,
+    "ticket_price": 1.99,
+    "win_sequence": 9378,
+    "percent_path": 45.91,
+    "approx_tickets_sold": 130319,
+    "approx_value_at_win": 259334.43
+  },
+  {
+    "raffle": 80,
+    "prize": "Mystery Jackpot Cash",
+    "value": 10000.0,
+    "ticket_price": 1.5,
+    "win_sequence": 4245,
+    "percent_path": 18.02,
+    "approx_tickets_sold": 27094,
+    "approx_value_at_win": 40641.54
+  },
+  {
+    "raffle": 76,
+    "prize": "\u00a310,000 Cash",
+    "value": 10000.0,
+    "ticket_price": 1.35,
+    "win_sequence": 15542,
+    "percent_path": 85.2,
+    "approx_tickets_sold": 189971,
+    "approx_value_at_win": 256460.51
+  },
+  {
+    "raffle": 73,
+    "prize": "\u00a310,000 Cash",
+    "value": 10000.0,
+    "ticket_price": 0.65,
+    "win_sequence": 7094,
+    "percent_path": 44.11,
+    "approx_tickets_sold": 117046,
+    "approx_value_at_win": 76079.71
+  },
+  {
+    "raffle": 75,
+    "prize": "\u00a310,000 Cash",
+    "value": 10000.0,
+    "ticket_price": 0.69,
+    "win_sequence": 16039,
+    "percent_path": 81.62,
+    "approx_tickets_sold": 219784,
+    "approx_value_at_win": 151650.79
+  },
+  {
+    "raffle": 68,
+    "prize": "\u00a310,000 Cash",
+    "value": 10000.0,
+    "ticket_price": 0.89,
+    "win_sequence": 1488,
+    "percent_path": 9.27,
+    "approx_tickets_sold": 18395,
+    "approx_value_at_win": 16371.59
+  },
+  {
+    "raffle": 69,
+    "prize": "\u00a310,000 Cash",
+    "value": 10000.0,
+    "ticket_price": 1.5,
+    "win_sequence": 8066,
+    "percent_path": 38.54,
+    "approx_tickets_sold": 95160,
+    "approx_value_at_win": 142740.45
+  },
+  {
+    "raffle": 70,
+    "prize": "\u00a310,000 Cash",
+    "value": 10000.0,
+    "ticket_price": 0.59,
+    "win_sequence": 15128,
+    "percent_path": 88.58,
+    "approx_tickets_sold": 252070,
+    "approx_value_at_win": 148721.39
+  },
+  {
+    "raffle": 64,
+    "prize": "\u00a310,000 Cash",
+    "value": 10000.0,
+    "ticket_price": 0.6,
+    "win_sequence": 17433,
+    "percent_path": 76.85,
+    "approx_tickets_sold": 284337,
+    "approx_value_at_win": 170602.23
+  },
+  {
+    "raffle": 65,
+    "prize": "\u00a310,000 Cash",
+    "value": 10000.0,
+    "ticket_price": 1.79,
+    "win_sequence": 2110,
+    "percent_path": 11.12,
+    "approx_tickets_sold": 11594,
+    "approx_value_at_win": 20752.55
+  },
+  {
+    "raffle": 66,
+    "prize": "\u00a310,000 Cash",
+    "value": 10000.0,
+    "ticket_price": 0.65,
+    "win_sequence": 10665,
+    "percent_path": 66.83,
+    "approx_tickets_sold": 161076,
+    "approx_value_at_win": 104699.22
+  },
+  {
+    "raffle": 57,
+    "prize": "\u00a310,000 Cash",
+    "value": 10000.0,
+    "ticket_price": 1.5,
+    "win_sequence": 9900,
+    "percent_path": 74.9,
+    "approx_tickets_sold": 108337,
+    "approx_value_at_win": 162505.15
+  },
+  {
+    "raffle": 55,
+    "prize": "Aprilia Tuono 1100 V4 RR",
+    "value": 10568.99,
+    "ticket_price": 1.99,
+    "win_sequence": 857,
+    "percent_path": 4.2,
+    "approx_tickets_sold": 11909,
+    "approx_value_at_win": 23699.04
+  },
+  {
+    "raffle": 58,
+    "prize": "Rolex Datejust 36",
+    "value": 10750.0,
+    "ticket_price": 0.66,
+    "win_sequence": 9130,
+    "percent_path": 83.52,
+    "approx_tickets_sold": 218597,
+    "approx_value_at_win": 144274.14
+  },
+  {
+    "raffle": 64,
+    "prize": "Rolex Submariner \"Starbucks\"",
+    "value": 13500.0,
+    "ticket_price": 0.6,
+    "win_sequence": 6173,
+    "percent_path": 27.21,
+    "approx_tickets_sold": 100683,
+    "approx_value_at_win": 60410.0
+  },
+  {
+    "raffle": 79,
+    "prize": "Rolex Submariner \u2018Starbucks\u2019",
+    "value": 13500.0,
+    "ticket_price": 0.6,
+    "win_sequence": 8813,
+    "percent_path": 50.27,
+    "approx_tickets_sold": 139156,
+    "approx_value_at_win": 83493.44
+  },
+  {
+    "raffle": 72,
+    "prize": "Rolex GMT Master II 'Batgirl'",
+    "value": 14000.0,
+    "ticket_price": 1.99,
+    "win_sequence": 7304,
+    "percent_path": 45.09,
+    "approx_tickets_sold": 36938,
+    "approx_value_at_win": 73507.52
+  },
+  {
+    "raffle": 68,
+    "prize": "Rolex GMT Master II \u2018Batgirl\u2019",
+    "value": 14000.0,
+    "ticket_price": 0.89,
+    "win_sequence": 7925,
+    "percent_path": 49.37,
+    "approx_tickets_sold": 97971,
+    "approx_value_at_win": 87194.11
+  },
+  {
+    "raffle": 63,
+    "prize": "Mystery Jackpot Cash",
+    "value": 15000.0,
+    "ticket_price": 1.99,
+    "win_sequence": 12766,
+    "percent_path": 68.63,
+    "approx_tickets_sold": 115348,
+    "approx_value_at_win": 229541.77
+  },
+  {
+    "raffle": 55,
+    "prize": "\u00a315,000 Cash",
+    "value": 15000.0,
+    "ticket_price": 1.99,
+    "win_sequence": 3658,
+    "percent_path": 17.91,
+    "approx_tickets_sold": 50832,
+    "approx_value_at_win": 101156.47
+  },
+  {
+    "raffle": 55,
+    "prize": "\u00a315,000 Cash",
+    "value": 15000.0,
+    "ticket_price": 1.99,
+    "win_sequence": 5373,
+    "percent_path": 26.3,
+    "approx_tickets_sold": 74664,
+    "approx_value_at_win": 148582.2
+  },
+  {
+    "raffle": 62,
+    "prize": "Mystery Jackpot Cash",
+    "value": 15000.0,
+    "ticket_price": 0.6,
+    "win_sequence": 18131,
+    "percent_path": 77.24,
+    "approx_tickets_sold": 291623,
+    "approx_value_at_win": 174973.84
+  },
+  {
+    "raffle": 69,
+    "prize": "Rolex GMT Master II \u201cZombie\u201d",
+    "value": 16000.0,
+    "ticket_price": 1.5,
+    "win_sequence": 19779,
+    "percent_path": 94.5,
+    "approx_tickets_sold": 233347,
+    "approx_value_at_win": 350020.26
+  },
+  {
+    "raffle": 64,
+    "prize": "Rolex GMT Master II \u201cZombie\u201d",
+    "value": 16000.0,
+    "ticket_price": 0.6,
+    "win_sequence": 2421,
+    "percent_path": 10.67,
+    "approx_tickets_sold": 39487,
+    "approx_value_at_win": 23692.31
+  },
+  {
+    "raffle": 76,
+    "prize": "Rolex GMT Master II 'Zombie'",
+    "value": 16000.0,
+    "ticket_price": 1.35,
+    "win_sequence": 13249,
+    "percent_path": 72.63,
+    "approx_tickets_sold": 161943,
+    "approx_value_at_win": 218623.43
+  },
+  {
+    "raffle": 64,
+    "prize": "VW Golf R",
+    "value": 16500.0,
+    "ticket_price": 0.6,
+    "win_sequence": 15056,
+    "percent_path": 66.38,
+    "approx_tickets_sold": 245568,
+    "approx_value_at_win": 147340.51
+  },
+  {
+    "raffle": 65,
+    "prize": "Mystery Car #6",
+    "value": 17400.0,
+    "ticket_price": 1.79,
+    "win_sequence": 5619,
+    "percent_path": 29.61,
+    "approx_tickets_sold": 30874,
+    "approx_value_at_win": 55264.73
+  },
+  {
+    "raffle": 58,
+    "prize": "Rolex Yachtmaster II",
+    "value": 17650.0,
+    "ticket_price": 0.66,
+    "win_sequence": 211,
+    "percent_path": 1.93,
+    "approx_tickets_sold": 5052,
+    "approx_value_at_win": 3334.27
+  },
+  {
+    "raffle": 79,
+    "prize": "VW Caddy C20 TDI",
+    "value": 18135.0,
+    "ticket_price": 0.6,
+    "win_sequence": 16807,
+    "percent_path": 95.86,
+    "approx_tickets_sold": 265380,
+    "approx_value_at_win": 159227.75
+  },
+  {
+    "raffle": 56,
+    "prize": "Choose Your Keys!",
+    "value": 18135.0,
+    "ticket_price": 0.84,
+    "win_sequence": 7534,
+    "percent_path": 48.58,
+    "approx_tickets_sold": 185828,
+    "approx_value_at_win": 156095.91
+  },
+  {
+    "raffle": 56,
+    "prize": "Choose Your Keys!",
+    "value": 18135.0,
+    "ticket_price": 0.84,
+    "win_sequence": 4663,
+    "percent_path": 30.06,
+    "approx_tickets_sold": 115014,
+    "approx_value_at_win": 96612.06
+  },
+  {
+    "raffle": 56,
+    "prize": "Choose Your Keys!",
+    "value": 18135.0,
+    "ticket_price": 0.84,
+    "win_sequence": 10515,
+    "percent_path": 67.79,
+    "approx_tickets_sold": 259356,
+    "approx_value_at_win": 217858.84
+  },
+  {
+    "raffle": 56,
+    "prize": "Choose Your Keys!",
+    "value": 18135.0,
+    "ticket_price": 0.84,
+    "win_sequence": 3558,
+    "percent_path": 22.94,
+    "approx_tickets_sold": 87759,
+    "approx_value_at_win": 73717.71
+  },
+  {
+    "raffle": 63,
+    "prize": "250g Gold Cast Bar",
+    "value": 18500.0,
+    "ticket_price": 1.99,
+    "win_sequence": 2762,
+    "percent_path": 14.85,
+    "approx_tickets_sold": 24956,
+    "approx_value_at_win": 49662.73
+  },
+  {
+    "raffle": 65,
+    "prize": "Mystery Car #5",
+    "value": 19140.0,
+    "ticket_price": 1.79,
+    "win_sequence": 186,
+    "percent_path": 0.98,
+    "approx_tickets_sold": 1022,
+    "approx_value_at_win": 1829.37
+  },
+  {
+    "raffle": 56,
+    "prize": "\u00a320,000 Cash",
+    "value": 20000.0,
+    "ticket_price": 0.84,
+    "win_sequence": 7744,
+    "percent_path": 49.93,
+    "approx_tickets_sold": 191008,
+    "approx_value_at_win": 160446.87
+  },
+  {
+    "raffle": 74,
+    "prize": "5* All Inclusive Holiday to Bora Bora",
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+]

requirements.txt

@@ -0,0 +1,11 @@
+fastapi
+uvicorn
+langchain
+langchain-community
+langchain-core
+langchain-groq
+chromadb
+huggingface-hub
+pydantic
+ratelimit
+sentence-transformers