jkjk not final

common.py

@@ -0,0 +1,82 @@
+from pathlib import Path
+from datetime import datetime
+
+def parse_timestamp(timestamp):
+    return datetime.strptime(timestamp, '%Y-%m-%d %H:%M:%S')
+
+def parse_foods_file():
+    path = Path.home() / 'projects' / 'open-journal' / 'foods'
+    text = path.read_text()
+    foods, recipes = text.split('---')
+
+    def parse_macro(macro):
+        if macro == '...':
+            return ('INVALID', 0.0)
+
+        name, value = macro.split()
+        value = float(value.removesuffix('g').removesuffix('kcal'))
+        return (name, value)
+
+    foods = {
+        macros[0]: dict(parse_macro(macro) for macro in macros[1:])
+        for macros in [food.split('\n') for food in foods.strip().split('\n\n')]
+    }
+
+    def combine_values(fst, snd):
+        result = fst.copy()
+        for k,v in snd.items():
+            if k in fst:
+                result[k] += v
+            else:
+                result[k] = v
+        return result
+
+    def evaluate_ingredients(ingredients):
+        result = {}
+
+        total_weight = 0.0
+        for ingredient in ingredients:
+            k,v = parse_macro(ingredient)
+            if k == 'TOTAL':
+                result[k] = v
+                break
+            else:
+                total_weight += v
+
+
+            food = foods[k]
+
+            for kk,vv in food.items():
+                if kk not in result:
+                    result[kk] = 0.0
+
+                result[kk] += vv * (v/100.0)
+
+        if 'TOTAL' not in result:
+            result['TOTAL'] = total_weight
+
+        return result
+
+    recipes = {
+        ingredients[0]: evaluate_ingredients(ingredients[1:])
+        for ingredients in [
+            recipe.split('\n') for recipe in recipes.strip().split('\n\n')
+        ]
+    }
+
+    def get_calories_from_macros(mm):
+        calories = 0.0
+        for k,v in mm.items():
+            calories += v * {
+                'Carbs': 4,
+                'Fat': 9,
+                'Protein': 4
+            }.get(k, 0.0)
+        return calories
+
+    #for k,v in foods.items():
+    #    print(round(v.get('Energy') - get_calories_from_macros(v)), k)
+
+    return foods, recipes
+
+