Tinder-System-design.md

Designing dating app like Tinder

System Requirements:

User Profile Management:

1. Creating User Profiles:

Users should be able to create profiles with details like pictures, bio, and interests. Include options for relationship preferences.

2. Updating User Profiles:

Users can update their profile information, including photos and bio. Provide options for users to modify their relationship preferences.

3. Viewing User Profiles:

Users should be able to view profiles of others. Profiles may include pictures, bio, interests, and relationship preferences.

4. Matching and Connection:

Implement a mechanism for users to express interest in others. Users can connect or match if interest is mutual.

Core Use Cases:

1. User Registration:

Users can create an account with details like name, age, photos, and interests. Include options to set relationship preferences.

2. User Authentication:

Securely authenticate users during login.

3. Profile Creation:

Allow users to create a profile with pictures, bio, and interests. Specify relationship preferences (e.g., seeking men, women, both).

4. Profile Update:

Enable users to update their profiles, including adding/removing pictures and modifying bio.

5. Profile Viewing:

Users can view profiles of others, including pictures and bio.

6. Expressing Interest:

Implement features like swiping right to express interest in another user's profile.

7. Matching:

If two users express mutual interest, create a match and notify both users.

8. Messaging (Optional):

Allow matched users to communicate through a messaging system.

Key Classes:

1. DatingAppSystem:

Manages the overall operations of the dating app. Coordinates interactions between different components.

2. User:

Represents a user account with attributes like name, age, and interests. Contains methods for creating, updating, and viewing profiles.

3. UserProfile:

Manages the details of a user's profile, including pictures, bio, and interests. Associated with the User class. 4. MatchingSystem:

Handles the logic for expressing interest, matching, and connecting users.

5. AuthenticationManager:

Handles user authentication during login. Validates the user's credentials.

#include <iostream>
#include <string>
#include <vector>

class UserProfile {
public:
    std::vector<std::string> pictures;
    std::string bio;
    std::string interests;
    // Additional attributes for relationship preferences

    UserProfile(const std::vector<std::string>& pics, const std::string& biography, const std::string& interests)
        : pictures(pics), bio(biography), interests(interests) {}
};

class User {
public:
    std::string username;
    std::string password; // For simplicity, in a real-world scenario, this should be securely stored.
    UserProfile* profile;

    User(const std::string& uname, const std::string& pwd)
        : username(uname), password(pwd), profile(nullptr) {}

    void createProfile(const std::vector<std::string>& pics, const std::string& bio, const std::string& interests) {
        profile = new UserProfile(pics, bio, interests);
    }

    void updateProfile(const std::vector<std::string>& pics, const std::string& bio) {
        if (profile) {
            profile->pictures = pics;
            profile->bio = bio;
        }
    }

    void viewProfile() {
        if (profile) {
            std::cout << "Username: " << username << "\n"
                      << "Bio: " << profile->bio << "\n"
                      << "Interests: " << profile->interests << "\n";
            std::cout << "Pictures:\n";
            for (const auto& pic : profile->pictures) {
                std::cout << "- " << pic << "\n";
            }
        } else {
            std::cout << "Profile not available.\n";
        }
    }
};

class MatchingSystem {
public:
    void expressInterest(User* currentUser, User* otherUser) {
        // Implement logic for expressing interest (e.g., swiping right)
    }

    void matchUsers(User* user1, User* user2) {
        // Implement logic for creating a match
    }
};

class AuthenticationManager {
public:
    bool authenticateUser(User* user, const std::string& pwd) {
        return user && user->password == pwd;
    }
};

int main() {
    User user1("Alice", "password123");
    user1.createProfile({"alice_pic1.jpg", "alice_pic2.jpg"}, "Looking for meaningful connections.", "Art, Music");

    User user2("Bob", "securePWD");
    user2.createProfile({"bob_pic1.jpg"}, "Enjoying life and meeting new people.", "Hiking, Travel");

    MatchingSystem matchingSystem;
    AuthenticationManager authManager;

    // Example: Authenticating users
    if (authManager.authenticateUser(&user1, "password123")) {
        std::cout << "Authentication successful for " << user1.username << ".\n";
        user1.viewProfile();
    } else {
        std::cout << "Authentication failed for " << user1.username << ".\n";
    }

    // Example: Expressing interest and matching
    matchingSystem.expressInterest(&user1, &user2);
    matchingSystem.expressInterest(&user2, &user1);
    matchingSystem.matchUsers(&user1, &user2);

    // Example: Viewing matched profiles
    std::cout << "\nMatched Profiles:\n";
    user1.viewProfile();
    user2.viewProfile();

    return 0;
}