Init

backend/app/services/prices.py

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+import json
+import random
+from datetime import datetime
+from pathlib import Path
+from typing import Dict
+
+DATA_DIR = Path(__file__).resolve().parent.parent / "data"
+
+
+def _load_json(filename: str) -> Dict:
+    path = DATA_DIR / filename
+    with open(path, encoding="utf-8") as file:
+        return json.load(file)
+
+
+PRICE_RANGES = _load_json("price_ranges.json")["items"]
+
+
+def random_price(item: str) -> Dict:
+    low, high = PRICE_RANGES.get(item, (1.0, 3.0))
+    price = min(round(random.uniform(low, high), 2), 3.0)
+    return {
+        "item": item,
+        "price": price,
+        "currency": "EUR",
+        "generated_at": datetime.now().isoformat(timespec="seconds"),
+    }
+
+
+def prices_payload() -> Dict:
+    return {
+        "items": [random_price(item) for item in PRICE_RANGES.keys()],
+        "disclaimer": "Depende de como pilles al de cafete.",
+    }