feat: add current price and other info to DCA strategy detail

app/apps/currencies/utils/convert.py

@@ -1,25 +1,16 @@
-from django.db.models import Func, F, Value, DurationField, Case, When, DecimalField, Q
-from django.db.models.functions import Abs, Extract
+import datetime
+
+from django.db.models import Func, F, Value, Case, When, DecimalField, Q
+from django.db.models.functions import Extract
 from django.utils import timezone
-from django.core.exceptions import ValidationError
-from django.utils.translation import gettext_lazy as _
 
-from apps.currencies.models import ExchangeRate
 from apps.currencies.models import Currency
+from apps.currencies.models import ExchangeRate
 
 
-def convert(amount, from_currency: Currency, to_currency: Currency, date=None):
-    if from_currency == to_currency:
-        return (
-            amount,
-            to_currency.prefix,
-            to_currency.suffix,
-            to_currency.decimal_places,
-        )
-
-    if date is None:
-        date = timezone.localtime(timezone.now())
-
+def get_exchange_rate(
+    from_currency: Currency, to_currency: Currency, date: datetime.date
+) -> ExchangeRate | None:
     try:
         exchange_rate = (
             ExchangeRate.objects.filter(
@@ -41,13 +32,37 @@ def convert(amount, from_currency: Currency, to_currency: Currency, date=None):
         )
 
         if exchange_rate is None:
-            return None, None, None, None
+            return None
 
+    except ExchangeRate.DoesNotExist:
+        return None
+
+    else:
+        return exchange_rate
+
+
+def convert(amount, from_currency: Currency, to_currency: Currency, date=None):
+    if from_currency == to_currency:
         return (
-            amount * exchange_rate.effective_rate,
+            amount,
             to_currency.prefix,
             to_currency.suffix,
             to_currency.decimal_places,
         )
-    except ExchangeRate.DoesNotExist:
+
+    if date is None:
+        date = timezone.localtime(timezone.now())
+
+    exchange_rate = get_exchange_rate(
+        from_currency=from_currency, to_currency=to_currency, date=date
+    )
+
+    if exchange_rate is None:
         return None, None, None, None
+
+    return (
+        amount * exchange_rate.effective_rate,
+        to_currency.prefix,
+        to_currency.suffix,
+        to_currency.decimal_places,
+    )

app/apps/dca/models.py

@@ -7,7 +7,7 @@ from django.template.defaultfilters import date
 from django.utils import timezone
 from django.utils.translation import gettext_lazy as _
 
-from apps.currencies.utils.convert import convert
+from apps.currencies.utils.convert import convert, get_exchange_rate
 
 
 class DCAStrategy(models.Model):
@@ -133,6 +133,18 @@ class DCAStrategy(models.Model):
             "amounts_bought": amounts_bought,
         }
 
+    def current_price(self):
+        exchange_rate = get_exchange_rate(
+            from_currency=self.payment_currency,
+            to_currency=self.target_currency,
+            date=timezone.localtime(timezone.now()),
+        )
+
+        if exchange_rate:
+            return exchange_rate.effective_rate, exchange_rate.date
+        else:
+            return None
+
 
 class DCAEntry(models.Model):
     strategy = models.ForeignKey(

app/apps/dca/views.py

@@ -145,15 +145,6 @@ def strategy_detail(request, strategy_id):
         "entries": entries,
         "entries_data": entries_data,
         "monthly_data": monthly_data,
-        "total_invested": strategy.total_invested(),
-        "total_received": strategy.total_received(),
-        "average_entry_price": strategy.average_entry_price(),
-        "total_entries": strategy.total_entries(),
-        "current_total_value": strategy.current_total_value(),
-        "total_profit_loss": strategy.total_profit_loss(),
-        "total_profit_loss_percentage": strategy.total_profit_loss_percentage(),
-        "investment_frequency": strategy.investment_frequency_data(),
-        "price_comparison_data": strategy.price_comparison_data(),
     }
 
     return render(request, "dca/fragments/strategy/details.html", context)

app/templates/cotton/amount/display.html

@@ -1,7 +1,8 @@
 {% load currency_display %}
 
 <div class="{% if text_end %}text-end{% elif text_start %}text-start{% endif %}">
-  <div class="amount{% if color == 'grey' or color == "gray" %} tw-text-gray-500{% elif color == 'green' %} tw-text-green-400{% elif color == 'red' %} tw-text-red-400{% endif %}"
-       data-original-value="{% currency_display amount=amount prefix=prefix suffix=suffix decimal_places=decimal_places %}" data-amount="{{ amount|floatformat:"-40u" }}">
-  </div>
+  <span class="amount{% if color == 'grey' or color == "gray" %} tw-text-gray-500{% elif color == 'green' %} tw-text-green-400{% elif color == 'red' %} tw-text-red-400{% endif %}"
+       data-original-value="{% currency_display amount=amount prefix=prefix suffix=suffix decimal_places=decimal_places %}"
+       data-amount="{{ amount|floatformat:"-40u" }}">
+  </span><span>{{ slot }}</span>
 </div>

app/templates/dca/fragments/strategy/details.html

@@ -1,7 +1,27 @@
 {% load i18n %}
 <div class="container-fluid px-md-3 py-3 column-gap-5">
-  <div class="tw-text-3xl fw-bold font-monospace tw-w-full mb-3">
-    <div>{{ strategy.name }}</div>
+  <div class="d-lg-flex justify-content-between mb-3 w-100">
+    <div class="tw-text-3xl fw-bold font-monospace d-flex align-items-center">
+      {{ strategy.name }}
+    </div>
+    <div class="tw-text-sm text-lg-end mt-2 mt-lg-0">
+      <div class="mb-2">
+        <span class="badge rounded-pill text-bg-secondary">{{ strategy.payment_currency.name }}</span> x <span class="badge rounded-pill text-bg-secondary">{{ strategy.target_currency.name }}</span>
+      </div>
+      <div>
+        {% if strategy.current_price %}
+          <c-amount.display
+              :amount="strategy.current_price.0"
+              :prefix="strategy.payment_currency.prefix"
+              :suffix="strategy.payment_currency.suffix"
+              :decimal_places="strategy.payment_currency.decimal_places">
+           • {{ strategy.current_price.1|date:"SHORT_DATETIME_FORMAT" }}
+          </c-amount.display>
+          {% else %}
+          <div class="tw-text-red-400">{% trans "No exchange rate available" %}</div>
+          {% endif %}
+      </div>
+    </div>
   </div>
 
   <div class="row gy-3 gx-3">
@@ -108,6 +128,28 @@
     </div>
     <div class="col-xl-6 col">
       <div class="row row-cols-1 row-cols-md-2 row-cols-xl-3 gy-3 gx-3">
+        <div class="col">
+          <div class="card h-100">
+            <div class="card-body">
+              <h5 class="card-title">{% trans "Current value" %}</h5>
+              <div class="card-text">
+                {% if strategy.current_price %}
+                <c-amount.display
+                    :amount="strategy.current_price.0"
+                    :prefix="strategy.payment_currency.prefix"
+                    :suffix="strategy.payment_currency.suffix"
+                    :decimal_places="strategy.payment_currency.decimal_places">
+                </c-amount.display>
+                {% else %}
+                <div>{% trans "No exchange rate available" %}</div>
+                {% endif %}
+              </div>
+            </div>
+            <div class="card-footer text-body-secondary">
+                2 days ago
+              </div>
+          </div>
+        </div>
         <div class="col">
           <div class="card h-100">
             <div class="card-body">
@@ -169,7 +211,7 @@
             <div class="card-body">
               <h5 class="card-title">{% trans "Total P/L" %}</h5>
               <div
-                  class="card-text {% if strategy.total_profit_loss >= 0 %}text-success{% else %}text-danger{% endif %}">
+                  class="card-text {% if strategy.total_profit_loss >= 0 %}tw-text-green-400{% else %}tw-text-red-400{% endif %}">
                 <c-amount.display
                     :amount="strategy.total_profit_loss"
                     :prefix="strategy.payment_currency.prefix"
@@ -185,7 +227,7 @@
             <div class="card-body">
               <h5 class="card-title">{% trans "Total % P/L" %}</h5>
               <div
-                  class="card-text {% if strategy.total_profit_loss >= 0 %}text-success{% else %}text-danger{% endif %}">
+                  class="card-text {% if strategy.total_profit_loss >= 0 %}tw-text-green-400{% else %}tw-text-red-400{% endif %}">
                 {{ strategy.total_profit_loss_percentage|floatformat:2 }}%
               </div>
             </div>