Subscriptions Contract

The Subscriptions contract manages monthly subscriptions for VibesFlow Vibe Market access. Users pay 10 tMETIS for 30-day access to the Vibe Market platform.

Contract Overview

Address: 0xC5178c585784B93bc408eAd828701155a41e4f76
Standard: Custom subscription management
Default Price: 10 tMETIS (configurable)
Default Duration: 30 days (configurable)
Features: Time-based subscriptions, automatic expiration, renewal system

Subscription Model

Subscription Structure

Each user’s subscription is tracked with the following data:

struct Subscription {
    uint256 startTime;      // When subscription started
    uint256 endTime;        // When subscription expires
    uint256 amountPaid;     // Total amount paid in tMETIS
    bool isActive;          // Current subscription status
    uint256 renewalCount;   // Number of times renewed
}

Default Configuration

uint256 public constant DEFAULT_SUBSCRIPTION_PRICE = 10 ether; // 10 tMETIS
uint256 public constant DEFAULT_SUBSCRIPTION_DURATION = 30 days; // 30 days

Core Functions

Initial Subscription

function subscribe() external payable nonReentrant whenNotPaused

Creates a new subscription or extends an existing one. Requirements:

Must send exactly subscriptionPrice tMETIS
Contract must not be paused

Process:

Validates payment amount
Calculates subscription period
If existing subscription is active, extends from current end time
If no subscription or expired, starts new 30-day period
Updates active subscriber tracking
Transfers payment to treasury
Emits subscription event

Subscription Renewal

function renewSubscription() external payable nonReentrant whenNotPaused

Renews an existing subscription. Requirements:

Must have previously subscribed
Must send exactly subscriptionPrice tMETIS

Process:

Validates existing subscription
If still active, extends from current end time
If expired, starts new period from current time
Increments renewal counter
Updates payment tracking
Transfers to treasury

Subscription Validation

Active Subscription Check

function isSubscribed(address user) external view returns (bool)

Checks if a user currently has an active subscription:

function isSubscribed(address user) external view returns (bool) {
    Subscription memory userSub = subscriptions[user];
    return userSub.isActive && block.timestamp < userSub.endTime;
}

Time Remaining

function getTimeRemaining(address user) external view returns (uint256)

Returns seconds remaining on subscription (0 if expired or no subscription).

Expiration Check

function hasExpiredSubscription(address user) external view returns (bool)

Checks if user has a subscription that has expired.

Administrative Functions

Price Management

function setSubscriptionPrice(uint256 newPrice) external onlyOwner

Updates the subscription price. Emits SubscriptionPriceUpdated event.

Duration Management

function setSubscriptionDuration(uint256 newDuration) external onlyOwner

Updates the subscription duration. Emits SubscriptionDurationUpdated event.

Treasury Configuration

function setTreasuryReceiver(address newTreasury) external onlyOwner

Updates the treasury receiver address.

Emergency Controls

Pausable Operations

function pause() external onlyOwner
function unpause() external onlyOwner

Allows owner to halt all subscription operations in emergencies.

Emergency Withdrawal

function emergencyWithdraw() external onlyOwner

Transfers any stuck contract balance to treasury (normal operations send payments immediately).

Maintenance Functions

Cleanup Expired Subscriptions

function cleanupExpiredSubscriptions(address[] calldata users) external

Maintenance function to update active subscriber count by marking expired subscriptions as inactive:

function cleanupExpiredSubscriptions(address[] calldata users) external {
    for (uint256 i = 0; i < users.length; i++) {
        address user = users[i];
        Subscription storage userSub = subscriptions[user];
        
        if (userSub.startTime > 0 && block.timestamp >= userSub.endTime && userSub.isActive) {
            userSub.isActive = false;
            
            if (isActiveSubscriber[user]) {
                isActiveSubscriber[user] = false;
                if (activeSubscriberCount > 0) {
                    activeSubscriberCount--;
                }
            }
        }
    }
}

Analytics Functions

Subscriber Metrics

function getActiveSubscriberCount() external view returns (uint256)
function getTotalRevenue() external view returns (uint256)

Provides real-time metrics on subscriber count and revenue.

Configuration Queries

function getSubscriptionPrice() external view returns (uint256)
function getSubscriptionDuration() external view returns (uint256)
function getContractBalance() external view returns (uint256)

Events

Subscription Events

event Subscribed(
    address indexed user,
    uint256 startTime,
    uint256 endTime,
    uint256 amountPaid
);

event SubscriptionRenewed(
    address indexed user,
    uint256 newEndTime,
    uint256 amountPaid,
    uint256 renewalCount
);

Configuration Events

event SubscriptionPriceUpdated(uint256 oldPrice, uint256 newPrice);
event SubscriptionDurationUpdated(uint256 oldDuration, uint256 newDuration);
event TreasuryReceiverUpdated(address indexed oldTreasury, address indexed newTreasury);

Security Features

Payment Validation

Strict payment validation ensures exact amounts:

require(msg.value == subscriptionPrice, "Subscriptions: Incorrect payment amount");

Reentrancy Protection

All payable functions use nonReentrant modifier:

function subscribe() external payable nonReentrant whenNotPaused

Access Control

Only owner can modify configuration
Only owner can pause/unpause operations
Users can only manage their own subscriptions

Fallback Protection

Contract rejects direct payments:

receive() external payable {
    revert("Subscriptions: Use subscribe() function");
}

fallback() external payable {
    revert("Subscriptions: Use subscribe() function");
}

Usage Examples

Initial Subscription

// Subscribe for 30 days (10 tMETIS)
subscriptions.subscribe{value: 10 ether}();

Renewal

// Renew existing subscription
subscriptions.renewSubscription{value: 10 ether}();

Checking Subscription Status

// Check if user has active subscription
bool isActive = subscriptions.isSubscribed(userAddress);

// Get time remaining
uint256 timeLeft = subscriptions.getTimeRemaining(userAddress);

// Get full subscription details
Subscription memory userSub = subscriptions.getSubscription(userAddress);

Administrative Operations

// Update subscription price to 15 tMETIS
subscriptions.setSubscriptionPrice(15 ether);

// Update duration to 60 days
subscriptions.setSubscriptionDuration(60 days);

// Pause subscriptions
subscriptions.pause();

Integration Points

Vibe Market Access Control

The subscription contract serves as an access control mechanism for the Vibe Market. Frontend applications can check subscription status before granting access:

const isSubscribed = await subscriptionsContract.isSubscribed(userAddress);
if (!isSubscribed) {
    // Redirect to subscription page
    showSubscriptionModal();
}

Revenue Tracking

All subscription payments flow directly to the treasury, providing transparent revenue tracking:

// In subscribe() and renewSubscription()
(bool success, ) = payable(treasuryReceiver).call{value: msg.value}("");
require(success, "Subscriptions: Payment to treasury failed");

Subscription Lifecycle

Initial Subscription

User calls subscribe() with 10 tMETIS, receives 30-day access

Active Period

User has full Vibe Market access, tracked via isSubscribed()

Renewal

User can renew before or after expiration via renewSubscription()

Expiration

Subscription expires automatically, access is revoked

Cleanup

Periodic cleanup maintains accurate active subscriber count

Next Steps

Delegation System

Learn about delegation mechanics

Deployed Contracts

View contract addresses

​Subscriptions Contract

​Contract Overview

​Subscription Model

​Subscription Structure

​Default Configuration

​Core Functions

​Initial Subscription

​Subscription Renewal

​Subscription Validation

​Active Subscription Check

​Time Remaining

​Expiration Check

​Administrative Functions

​Price Management

​Duration Management

​Treasury Configuration

​Emergency Controls

​Pausable Operations

​Emergency Withdrawal

​Maintenance Functions

​Cleanup Expired Subscriptions

​Analytics Functions

​Subscriber Metrics

​Configuration Queries

​Events

​Subscription Events

​Configuration Events

​Security Features

​Payment Validation

​Reentrancy Protection

​Access Control

​Fallback Protection

​Usage Examples

​Initial Subscription

​Renewal

​Checking Subscription Status

​Administrative Operations

​Integration Points

​Vibe Market Access Control

​Revenue Tracking

​Subscription Lifecycle

​Next Steps

Delegation System

Deployed Contracts

Subscriptions Contract

Contract Overview

Subscription Model

Subscription Structure

Default Configuration

Core Functions

Initial Subscription

Subscription Renewal

Subscription Validation

Active Subscription Check

Time Remaining

Expiration Check

Administrative Functions

Price Management

Duration Management

Treasury Configuration

Emergency Controls

Pausable Operations

Emergency Withdrawal

Maintenance Functions

Cleanup Expired Subscriptions

Analytics Functions

Subscriber Metrics

Configuration Queries

Events

Subscription Events

Configuration Events

Security Features

Payment Validation

Reentrancy Protection

Access Control

Fallback Protection

Usage Examples

Initial Subscription

Renewal

Checking Subscription Status

Administrative Operations

Integration Points

Vibe Market Access Control

Revenue Tracking

Subscription Lifecycle

Next Steps