Implement subscription usage-based billing with real-time metering

[Smartdevs17]

Implement subscription usage-based billing with real-time metering

Description

Context: Usage-based subscriptions require real-time usage tracking and billing.

Current Limitation: No real-time usage metering exists.

Expected Outcome: Implement usage metering system with real-time tracking and billing.

Acceptance Criteria

• Implement MeteredUsage: metric, value, timestamp
• Add real-time meter data ingestion
• Implement usage aggregation by period
• Add real-time billing calculation
• Support multiple meters per subscription
• Implement usage alerts and notifications
• Add usage history and trends
• Create React Native usage monitoring UI

Technical Scope

Files Likely Affected:

• contracts/metering/src/lib.rs - New metering module
• app/stores/meteringStore.ts - Metering state
• app/screens/UsageMonitoringScreen.tsx

APIs/Contracts Involved:

• record_metered_usage(subscription_id: SubscriptionId, meter: Meter, value: u64)
• calculate_usage_charge(subscription_id: SubscriptionId, period: TimeRange) -> Charge

Edge Cases to Consider:

• High-frequency metering
• Meter data consistency

[mitchellecm7]

@mitchellecm7 has applied to work on this issue as part of the Stellar Wave Program's 4th wave.

Good day I am a full stack developer with over 6 years of experience I have previously implemented subscription usage-based billing with real-time metering and I have good practical knowledge on this kindly assign this to me

ℹ️ Repo Maintainers: To accept this application, review their application or assign @mitchellecm7 to this issue.

[thefifthdev]

@thefifthdev has applied to work on this issue as part of the Stellar Wave Program's 4th wave.

i can handle this

ℹ️ Repo Maintainers: To accept this application, review their application or assign @thefifthdev to this issue.