From bffc50aef04010f557c08461c56344e4468b4830 Mon Sep 17 00:00:00 2001
From: Byron Lathi <byron@byronlathi.com>
Date: Sat, 24 Jan 2026 21:56:11 -0800
Subject: [PATCH] Proof of concept

---
 .gitignore                        |  1 +
 proof_of_concept/credit_cardle.py | 55 ++++++++++++++++++++
 proof_of_concept/credit_cards.py  | 84 +++++++++++++++++++++++++++++++
 3 files changed, 140 insertions(+)
 create mode 100644 .gitignore
 create mode 100644 proof_of_concept/credit_cardle.py
 create mode 100644 proof_of_concept/credit_cards.py

diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..ba0430d
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1 @@
+__pycache__/
\ No newline at end of file
diff --git a/proof_of_concept/credit_cardle.py b/proof_of_concept/credit_cardle.py
new file mode 100644
index 0000000..ab96641
--- /dev/null
+++ b/proof_of_concept/credit_cardle.py
@@ -0,0 +1,55 @@
+import random
+
+import credit_cards
+
+GUESSES = 5
+
+def main():
+    card: credit_cards.CreditCard = random.choice(credit_cards.credit_cards)
+
+    correct_issuer = False
+    correct_card = False
+
+    for guess in range(GUESSES):
+        if guess == 0:
+            print(f"Annual Fee: {card.annual_fee}")
+            print(f"Signup Bonus: {card.signup_bonus}")
+            print(f"Default Multiplier: {card.default_multiplier}")
+        elif guess == 1:
+            print(f"Points type: {card.points_type.value}")
+        elif guess == 2:
+            print(f"Category Multipliers: {[f'{multiplier[0].name}, {multiplier[1]}' for multiplier in card.category_multipliers]}")
+        else:
+            other_index = guess-3
+            if other_index < len(card.other):
+                print(f"Other: {card.other[other_index]}")
+
+        while True:
+            if not correct_issuer:
+                issuer_guess = input("Issuer Guess?")
+            if issuer_guess in credit_cards.CardIssuer:
+                issuer_guess = credit_cards.CardIssuer(issuer_guess)
+                break
+
+        while True:
+            card_name_guess = input("Card Name Guess?")
+            if card_name_guess not in credit_cards.card_names_by_issuer[issuer_guess]:
+                print(credit_cards.card_names_by_issuer[issuer_guess])
+            else:
+                break
+
+
+        if issuer_guess == card.issuer and not correct_issuer:
+            correct_issuer = True
+            print("Correct issuer Guess!")
+
+        if card_name_guess == card.card_name:
+            correct_card = True
+            print("Correct card guess!")
+
+        if correct_issuer and correct_card:
+            break
+
+
+if __name__ == "__main__":
+    main()
\ No newline at end of file
diff --git a/proof_of_concept/credit_cards.py b/proof_of_concept/credit_cards.py
new file mode 100644
index 0000000..8610529
--- /dev/null
+++ b/proof_of_concept/credit_cards.py
@@ -0,0 +1,84 @@
+from dataclasses import dataclass
+from typing import NamedTuple, Tuple
+
+from collections.abc import Sequence
+
+from enum import Enum, auto
+
+class CardIssuer(Enum):
+    AmericanExpress="American Express"
+
+class SignUpBonus(NamedTuple):
+    points: int
+    time_months: int
+    spend: int
+
+class PointsCategory(Enum):
+    Hotel=auto
+    Travel=auto
+    Delta=auto
+    Gas=auto
+    Restaurant=auto
+    SuperMarket=auto
+
+class PointsType(Enum):
+    CashBack=auto
+    DeltaSkyMiles="Delta SkyMiles®"
+
+
+@dataclass
+class CreditCard:
+    issuer: CardIssuer
+    card_name: str
+    annual_fee: int
+    signup_bonus: SignUpBonus
+    points_type: PointsType
+    default_multiplier: float
+    category_multipliers: Sequence[Tuple[PointsCategory, float]]
+    other: Sequence[str]
+
+
+credit_cards = [
+    CreditCard(
+        CardIssuer.AmericanExpress,
+        "Delta SkyMiles® Reserve American Express Card",
+        650,
+        SignUpBonus(70000, 6, 5000),
+        PointsType.DeltaSkyMiles,
+        1,
+        [
+            (PointsCategory.Delta, 3)
+        ],
+        [
+            "15 Visits per Medallion® Year to the Delta Sky Club® when flying Delta",
+            "$2,500 Medallion® Qualification Dollars with MQD Headstart each Medallion Qualification Year and earn $1 MQD for each $10 in purchases",
+            "$240 Resy Credit",
+            "$120 Rideshare Credit",
+            "15% off when using miles to book Award Travel",
+        ]
+    ),
+    CreditCard(
+        CardIssuer.AmericanExpress,
+        "Delta SkyMiles® Gold American Express Card",
+        150,
+        SignUpBonus(50000, 6, 2000),
+        PointsType.DeltaSkyMiles,
+        1,
+        [
+            (PointsCategory.Delta, 3)
+            (PointsCategory.Restaurant, 2),
+            (PointsCategory.SuperMarket, 2),
+        ],
+        [
+            "15% off when using miles to book Award Travel",
+            "$200 Delta Flight Credit: After you spend $10,000 in purchases on your Card in a calendar year, you can receive a $200 Delta Flight Credit to use toward future travel.",
+            "$100 Delta Stays Credit: Get up to $100 back per year as a statement credit after using your Delta SkyMiles® Gold American Express Card to book prepaid hotels or vacation rentals through Delta Stays on delta.com.",
+        ]
+    )
+]
+
+
+card_names_by_issuer = {issuer: [] for issuer in CardIssuer}
+
+for card in credit_cards:
+    card_names_by_issuer[card.issuer].append(card.card_name)
\ No newline at end of file