git'n a system-desgin-primer

B4/Solutions/object_oriented_design/ride_sharing/features.text

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+Ride-Sharing Service:
+
+1. User: Represents a user who can request rides.
+
+2. Driver: Represents a driver who can accept rides.
+
+3. Ride: Represents a ride request, including the user and locations.
+
+4. RideSharingService: Manages users and drivers and includes logic 
+    to match rides.

B4/Solutions/object_oriented_design/ride_sharing/ride.py

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+import random
+
+class User:
+    def __init__(self, user_id, name):
+        self.user_id = user_id
+        self.name = name
+        self.rides = []
+
+    def request_ride(self, pickup_location, dropoff_location):
+        ride = Ride(self, pickup_location, dropoff_location)
+        return ride
+
+class Driver:
+    def __init__(self, driver_id, name):
+        self.driver_id = driver_id
+        self.name = name
+        self.rides = []
+
+    def accept_ride(self, ride):
+        self.rides.append(ride)
+        ride.driver = self
+        print(f"Driver {self.name} accepted ride from {ride.user.name}.")
+
+class Ride:
+    def __init__(self, user, pickup_location, dropoff_location):
+        self.user = user
+        self.pickup_location = pickup_location
+        self.dropoff_location = dropoff_location
+        self.driver = None
+        self.ride_id = random.randint(1000, 9999)  # Random ID for ride
+
+class RideSharingService:
+    def __init__(self):
+        self.drivers = []
+        self.users = []
+
+    def register_driver(self, driver_id, name):
+        driver = Driver(driver_id, name)
+        self.drivers.append(driver)
+        print(f"Driver {name} registered.")
+
+    def register_user(self, user_id, name):
+        user = User(user_id, name)
+        self.users.append(user)
+        print(f"User {name} registered.")
+
+    def match_ride(self, ride):
+        if self.drivers:
+            selected_driver = random.choice(self.drivers)  # Simple random matching
+            selected_driver.accept_ride(ride)
+        else:
+            print("No drivers available.")
+
+# Example Usage
+ride_sharing_service = RideSharingService()
+ride_sharing_service.register_driver(1, "John")
+ride_sharing_service.register_driver(2, "Jane")
+
+ride_sharing_service.register_user(101, "Alice")
+ride_sharing_service.register_user(102, "Bob")
+
+alice = ride_sharing_service.users[0]
+ride_request = alice.request_ride("Location A", "Location B")
+ride_sharing_service.match_ride(ride_request)