Remove listprice code and read price adjustments from database (#56)

api/lib/prices.py

@@ -1,15 +1,10 @@
 # coding=UTF-8
 """ Price formulas """
-import yaml
-from api.lib.utils import lru_with_ttl, round_half_up
+from api.lib.utils import round_half_up
 from api.models.external_print_product import get_external_print_product
+from api.models.price_adjustments import get_price_adjustment
 
 
-@lru_with_ttl(ttl_seconds=3600)
-def get_adjustment_config():
-    with open("api/resources/price-adjustments.yaml") as f:
-        return yaml.load(f, Loader=yaml.FullLoader)
-
 def wallpaper_m2_price(
     material,
     market,
@@ -34,12 +29,8 @@ def wallpaper_m2_price(
     price *= market.exchange_rate
     price *= market.price_adjustments
 
-    adjustment_config = get_adjustment_config()
-
     inquiry_or_product_key = "product" if inquiry is None else "inquiry"
-
-    adj_value = adjustment_config.get(material.name).get(inquiry_or_product_key).get(market.name, 1.0)
-    price *= adj_value
+    price *= get_price_adjustment(market.name, material.name, inquiry_or_product_key)
 
     if inc_vat:
         price *= market.vat