PW-567 add the old canvas formula

api/lib/limits.py

@@ -0,0 +1,52 @@
+# coding=UTF-8
+
+CANVAS = {
+    'max_long_side': 500,
+    'min_long_side': 20,
+    'max_short_side': 150,
+    'min_short_side': 20
+}
+
+CANVAS_FRAME = {
+    'max_long_side': 150,
+    'min_long_side': 40,
+    'max_short_side': 150,
+    'min_short_side': 40,
+}
+
+
+def calculate_canvas_frame_limits(width, height):
+    if width > height:
+        width = min(width, CANVAS_FRAME.get('max_long_side'))
+        width = max(width, CANVAS_FRAME.get('min_long_side'))
+        height = min(height, CANVAS_FRAME.get('max_short_side'))
+        height = max(height, CANVAS_FRAME.get('min_short_side'))
+    else:
+        height = min(height, CANVAS_FRAME.get('max_long_side'))
+        height = max(height, CANVAS_FRAME.get('min_long_side'))
+        width = min(width, CANVAS_FRAME.get('max_short_side'))
+        width = max(width, CANVAS_FRAME.get('min_short_side'))
+
+    # round to nearest 10
+    width = round(width, -1)
+    height = round(height, -1)
+
+    return width, height
+
+
+def calculate_canvas_limits(width, height, framed=False):
+    if framed:
+        return calculate_canvas_frame_limits(width, height)
+
+    if width > height:
+        width = min(width, CANVAS.get('max_long_side'))
+        width = max(width, CANVAS.get('min_long_side'))
+        height = min(height, CANVAS.get('max_short_side'))
+        height = max(height, CANVAS.get('min_short_side'))
+    else:
+        height = min(height, CANVAS.get('max_long_side'))
+        height = max(height, CANVAS.get('min_long_side'))
+        width = min(width, CANVAS.get('max_short_side'))
+        width = max(width, CANVAS.get('min_short_side'))
+
+    return width, height

api/lib/prices.py

@@ -1,7 +1,9 @@
 # coding=UTF-8
-
 """ Price formulas """
 
+from api.lib.utils import round_half_up
+from api.lib.limits import calculate_canvas_limits
+
 
 def wallpaper_price(width, height, material_price, market, designer=None, reseller=None, inc_vat=True):
     m2_price = material_price
@@ -96,3 +98,81 @@ def canvas_price(width, height, market, framed=True, designer=None, reseller=Non
         price *= market.vat
 
     return round(price)
+
+
+def canvas_frame_price(width, height, stock_price, additional_price=None):
+    width, height = calculate_canvas_limits(width, height, framed=True)
+    circumference = (2 * width) + (2 * height)
+    circumference = max(circumference, 170)
+
+    price = stock_price * circumference
+
+    # if width or height goes above this limit additional costs are added
+    if additional_price:
+        additional_price_limit = 120
+        if width > additional_price_limit or height > additional_price_limit:
+            price += additional_price
+
+    return price
+
+
+def old_canvas_diy_frame_price(width, height, market, reseller=None, inc_vat=True):
+    # todo: when product models are in place we should use stockproduct ""Do it yourself frame""
+    # instead of hardcoded values
+    stock_price = 1.61084
+    additional_price = 94.750000
+    price = canvas_frame_price(width, height, stock_price, additional_price)
+
+    # exchange to local currency
+    price *= market.exchange_rate
+
+    # multiply price with market price adjustments
+    price *= market.price_adjustments
+
+    # add reseller price premium
+    if reseller:
+        price *= (float(reseller.pricepremium) / 100) + 1
+
+    # add vat
+    if inc_vat:
+        price *= market.vat
+
+    return round_half_up(price)
+
+
+def old_canvas_price(width, height, material_price, market, framed=True, designer=None, reseller=None, inc_vat=True):
+    width, height = calculate_canvas_limits(width, height, framed)
+    # calculate square meter
+    sqm = (width / 100) * (height / 100)
+    sqm = max(sqm, 0.2)  # sqm can never go below 0.2
+
+    # calculate price per square meter
+    price = sqm * material_price
+
+    if framed:
+        # todo: when product models are in place we should use stockproduct
+        # "Canvasframe" instead of hardcoded values
+        stock_price = 1.04230824
+        additional_price = 94.750000
+        price += canvas_frame_price(width, height,
+                                    stock_price, additional_price)
+
+    # add designer price premium
+    if designer:
+        price *= (float(designer.pricepremium) / 100) + 1
+
+    # add reseller price premium
+    if reseller:
+        price *= (float(reseller.pricepremium) / 100) + 1
+
+    # exchange to local currency
+    price *= market.exchange_rate
+
+    # multiply price with market price adjustments
+    price *= market.price_adjustments
+
+    # add vat
+    if inc_vat:
+        price *= market.vat
+
+    return round_half_up(price)

api/lib/utils.py

@@ -0,0 +1,5 @@
+from decimal import Decimal, ROUND_HALF_UP
+
+
+def round_half_up(val):
+    return int(Decimal(val).quantize(0, ROUND_HALF_UP))