Implement borrower loan tracking in contract

[JosueBrenes]

Feature Request ✨

📝 Title

Implement borrower loan tracking in contract

🔍 Description

Implement functionality in the smart contract to track borrower loans, including amounts, terms, payments, interest, and loan status.

💡 Proposed Solution

• Add data structures to track loans per borrower
• Implement functions to query loan history
• Track completed and pending payments
• Automatic calculation of interest and penalties
• Events to notify loan changes
• Query functions for frontend dashboard

🧠 Motivation / Related Problem

To be able to display real data in the borrowers dashboard (UI), we need the contract to provide loan information in a structured and queryable way.

📸 Visuals / References

Required contract functionalities:

• getBorrowerLoans(address borrower) - Returns all loans
• getBorrowerTotalDebt(address borrower) - Returns total debt
• getBorrowerPaymentSchedule(address borrower) - Returns payment schedule
• getBorrowerLoanHistory(address borrower) - Returns complete history
• calculateInterest(uint256 loanId) - Calculates current interest
• Events: LoanTaken, PaymentMade, LoanDefaulted, InterestAccrued

📚 Additional Notes

• Priority: Feature (Contract Implementation)
• Component: Smart Contract, Backend
• Labels: enhancement, contract, borrower, tracking
• RELATED: Borrowers UI dashboard issue
• Implement notification system for upcoming payments
• Consider different loan types and terms
• Ensure data consistency with UI mockups
• Include functionality for partial and full payments

[emarc99]

Can I give this a go?