match estimate in grant checkout emails (#9841)

* match estimate in grant checkout emails * fix * dpkg * feat: adds lerp to find the match_amount for the contribution/subscription * fix: use match_amount at time of contribution Co-authored-by: Kevin Owocki <[email protected]> Co-authored-by: Graham Dixon <[email protected]>
gitcoinco · Dec 8, 2021 · b206269 · b206269
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diff --git a/app/grants/models/contribution.py b/app/grants/models/contribution.py
@@ -363,6 +363,7 @@ def presave_contrib(sender, instance, **kwargs):
         'title': grant.title,
         'amount_per_period_minus_gas_price': float(instance.subscription.amount_per_period_minus_gas_price),
         'amount_per_period_to_gitcoin': float(instance.subscription.amount_per_period_to_gitcoin),
+        'match_amount_when_contributed': sub.match_amount,
         'created_on': ele.created_on.strftime('%Y-%m-%d'),
         'frequency': int(sub.frequency),
         'frequency_unit': sub.frequency_unit,

diff --git a/app/grants/models/subscription.py b/app/grants/models/subscription.py
@@ -186,6 +186,65 @@ class Subscription(SuperModel):
     def negative(self):
         return self.is_postive_vote == False
 
+    @property
+    def match_amount(self):
+        # discover the match_amount based on amount_per_period_usdt
+        amount = self.amount_per_period_usdt
+
+        clr_prediction_curve_2d = self.grant.clr_prediction_curve
+        clr_prediction_curve = [clr[2] for clr in clr_prediction_curve_2d]
+
+        if (amount > 10000):
+            amount = 10000
+
+        contributions_axis = [ 0, 1, 10, 100, 1000, 10000 ]
+        predicted_clr = 0
+        index = 0
+
+        if amount == 0:
+            predicted_clr = clr_prediction_curve[index]
+        elif amount in contributions_axis:
+            index = contributions_axis.index(amount)
+            predicted_clr = clr_prediction_curve[index]
+        else:
+            x_lower = 0
+            x_upper = 0
+            y_lower = 0
+            y_upper = 0
+
+            if 0 < amount and amount < 1:
+                x_lower = 0
+                x_upper = 1
+                y_lower = clr_prediction_curve[0]
+                y_upper = clr_prediction_curve[1]
+            elif 1 < amount and amount < 10:
+                x_lower = 1
+                x_upper = 10
+                y_lower = clr_prediction_curve[1]
+                y_upper = clr_prediction_curve[2]
+            elif 10 < amount and amount < 100:
+                x_lower = 10
+                x_upper = 100
+                y_lower = clr_prediction_curve[2]
+                y_upper = clr_prediction_curve[3]
+            elif 100 < amount and amount < 1000:
+                x_lower = 100
+                x_upper = 1000
+                y_lower = clr_prediction_curve[3]
+                y_upper = clr_prediction_curve[4]
+            else:
+                x_lower = 1000
+                x_upper = 10000
+                y_lower = clr_prediction_curve[4]
+                y_upper = clr_prediction_curve[5]
+
+        # use lerp to discover the predicted match_amount
+        return y_lower + (((y_upper - y_lower) * (float(amount) - x_lower)) / (x_upper - x_lower))
+
+    @property
+    def match_amount_token(self):
+        return 'DAI'
+
     @property
     def status(self):
         """Return grants status, current or past due."""

diff --git a/app/retail/emails.py b/app/retail/emails.py
@@ -165,16 +165,23 @@ def render_new_contributions_email(grant):
 
 def render_thank_you_for_supporting_email(grants_with_subscription):
     totals = {}
+    total_match_amount = 0
+    match_token = 'DAI'
     for gws in grants_with_subscription:
         key = gws['subscription'].token_symbol
         val = float(gws['subscription'].amount_per_period)
         if key not in totals.keys():
             totals[key] = 0
         totals[key] += float(val)
+        match_amount = float(gws.normalized_data['match_amount_when_contributed'])
+        total_match_amount += match_amount if match_amount else float(gws['subscription'].match_amount)
+        match_token = gws['subscription'].match_amount_token
 
     params = {
         'grants_with_subscription': grants_with_subscription,
         "totals": totals,
+        'total_match_amount': total_match_amount,
+        'match_token': match_token,
         'utm_tracking': build_utm_tracking('thank_you_for_supporting_email'),
     }
     response_html = premailer_transform(render_to_string("emails/grants/thank_you_for_supporting.html", params))

diff --git a/app/retail/templates/emails/grants/thank_you_for_supporting.html b/app/retail/templates/emails/grants/thank_you_for_supporting.html
@@ -74,6 +74,9 @@
     padding: 5px;
     border-top: 1px solid black;
   }
+  .green{
+    color: green;
+  }
 </style>
 <div id="content-body">
   <img class="center-img bounties-img" src="{% static 'v2/images/emails/grants.png' %}">
@@ -87,6 +90,9 @@ <h1 style="text-align:center; margin-top: 10px;">🤖❤️{% trans "Thank you f
       <td>
         Amount
       </td>
+      <td>
+        Match
+      </td>
       <td>
         Transaction
       </td>
@@ -102,6 +108,9 @@ <h1 style="text-align:center; margin-top: 10px;">🤖❤️{% trans "Thank you f
       <td>
       {{ subscription.amount_per_period|floatformat:4|intcomma }} {{ subscription.token_symbol }}
       </td>
+      <td class=green>
+      + {{ subscription.match_amount|floatformat:4|intcomma }} {{ subscription.match_amount_token }}
+      </td>
       <td>
         <a href="{{subscription.subscription_contribution.first.blockexplorer_url_split_txid}}">view &gt;&gt;</a>
       </td>
@@ -118,6 +127,11 @@ <h1 style="text-align:center; margin-top: 10px;">🤖❤️{% trans "Thank you f
       {%for key, val in totals.items%}
         {{val|floatformat:4}} {{key}}
       {%endfor%}
+      </td>
+      <td class=green>
+        + {{total_match_amount|floatformat:4}}
+        {{match_token}}
+
       </td>
       <td>
       </td>