P5-2777 add poster price calculations

api/lib/prices.py

@@ -50,6 +50,7 @@ def wallpaper_price(width, height, material, market, designer=None, reseller=Non
 
     if rounded:
         price = round(price)
+
     return price
 
 
@@ -75,6 +76,7 @@ def canvas_cm2_price(cm2):
         cm2_price = price_cm2_at_10000cm2 - discount
 
     cm2_price = max(cm2_price, 0.064)
+
     return cm2_price
 
 
@@ -146,6 +148,106 @@ def canvas_frame_price(width, height, market, reseller=None, rounded=True, inc_v
     return price
 
 
+def poster_cm2_price(cm2):
+    price_cm2_at_1cm2 = 0.084
+    price_cm2_at_5000cm2 = 0.0392
+    price_cm2_at_10000cm2 = 0.0336
+    price_cm2_at_22500cm2 = 0.028
+
+    if cm2 <= 5000:
+        diff = price_cm2_at_1cm2 - price_cm2_at_5000cm2
+        discount = (diff / 5000) * cm2
+        cm2_price = price_cm2_at_1cm2 - discount
+
+    elif cm2 > 5000 and cm2 <= 10000:
+        diff = price_cm2_at_5000cm2 - price_cm2_at_10000cm2
+        discount = (diff / 5000) * (cm2 - 5000)
+        cm2_price = price_cm2_at_5000cm2 - discount
+
+    elif cm2 > 10000:
+        diff = price_cm2_at_10000cm2 - price_cm2_at_22500cm2
+        discount = (diff / 12500) * (cm2 - 10000)
+        cm2_price = price_cm2_at_10000cm2 - discount
+
+    cm2_price = max(cm2_price, 0.028)
+
+    return cm2_price
+
+
+def poster_price(width, height, market, hanger=True, designer=None, reseller=None, inquiry=None, rounded=True, inc_vat=True):
+    cm2 = width * height
+    cm2_price = poster_cm2_price(cm2)
+    price = cm2 * cm2_price
+    price = max(price, 134.4)  # the price can never go below 134.4 SEK
+
+    if(hanger):
+        price += _price_for_poster_hanger_size(width)
+
+    price *= market.price_adjustments
+
+    price += package_price(width, height, market)
+
+    if designer:
+        price *= (float(designer.pricepremium) / 100) + 1
+
+    if reseller:
+        price *= (float(reseller.pricepremium) / 100) + 1
+
+    if inquiry:
+        price *= (float(inquiry.pricepremium) / 100) + 1
+
+    price *= market.exchange_rate
+
+    if inc_vat:
+        price *= market.vat
+
+    if rounded:
+        price = round_half_up(price)
+
+    return price
+
+
+def poster_hanger_price(width, market, reseller=None, rounded=True, inc_vat=True):
+    """calculates price for poster hanger only"""
+    price = _price_for_poster_hanger_size(width)
+    price += 50 # add 50 SEK extra since they are buying only the hanger
+
+    price *= market.price_adjustments
+    price += package_price(width, 10, market) # we assume the poster hanger has a height of 10cm here
+
+    if reseller:
+        price *= (float(reseller.pricepremium) / 100) + 1
+
+    price *= market.exchange_rate
+
+    if inc_vat:
+        price *= market.vat
+
+    if rounded:
+        price = round_half_up(price)
+
+    return price
+
+
+def _price_for_poster_hanger_size(size):
+    if size > 0 and size <= 30:
+        return 95.2
+    if size > 30 and size <= 50:
+        return 135.2
+    if size > 50 and size <= 60:
+        return 143.2
+    if size > 60 and size <= 70:
+        return 151.2
+    if size > 70 and size <= 100:
+        return 220
+    if size > 100 and size <= 125:
+        return 250
+    if size > 125 and size <= 150:
+        return 300
+
+    raise ValueError('Invalid poster hanger size: {}'.format(size))
+
+
 def inquiry_price(inquiry, inc_price_retouch=True, rounded=True, inc_vat=True, **kwargs):
     width = kwargs.get('width', inquiry.width)
     height = kwargs.get('height', inquiry.height)