;; title: token-bridge
;; version:
;; summary:
;; description:
;; Flash Loan Smart Contract
;; Define constants
(define-constant CONTRACT-ADMINISTRATOR tx-sender)
(define-constant ERROR-NOT-ADMINISTRATOR (err u100))
(define-constant ERROR-INSUFFICIENT-TOKEN-BALANCE (err u101))
(define-constant ERROR-LOAN-REPAYMENT-FAILED (err u102))
(define-constant ERROR-CONTRACT-PAUSED (err u103))
(define-constant ERROR-FLASH-LOAN-FEE-TOO-HIGH (err u104))
(define-constant ERROR-INSUFFICIENT-GOVERNANCE-TOKENS (err u105))
(define-constant ERROR-GOVERNANCE-PROPOSAL-NOT-FOUND (err u106))
(define-constant ERROR-GOVERNANCE-PROPOSAL-EXPIRED (err u107))
(define-constant ERROR-GOVERNANCE-TIMELOCK-NOT-EXPIRED (err u108))
(define-constant ERROR-TOKEN-NOT-SUPPORTED (err u109))
(define-constant ERROR-BORROWING-LIMIT-EXCEEDED (err u110))
(define-constant ERROR-INVALID-TOKEN-AMOUNT (err u111))
(define-constant ERROR-TOKEN-AMOUNT-EXCEEDS-MAXIMUM (err u112))
(define-constant ERROR-INVALID-TOKEN-CONTRACT (err u113))
(define-constant ERROR-INVALID-BORROWING-LIMIT (err u114))
(define-constant ERROR-BORROWING-LIMIT-TOO-HIGH (err u115))
(define-constant ERROR-INVALID-USER (err u116))
;; Define fungible tokens
(define-fungible-token governance-token)
(define-fungible-token flash-loan-token)
;; Define contract state variables
(define-data-var total-protocol-liquidity uint u0)
(define-data-var is-protocol-paused bool false)
(define-data-var flash-loan-fee-basis-points uint u5) ;; 0.05% fee (5 basis points)
(define-data-var total-governance-proposals uint u0)
(define-data-var governance-timelock-duration uint u1440) ;; 24 hours in blocks (assuming 1 block per minute)
;; Define data maps
(define-map user-token-balances
{
user-address: principal,
token-contract: principal,
}
uint
)
(define-map whitelisted-addresses
principal
bool
)
(define-map governance-proposals
uint
{
proposal-creator: principal,
proposal-description: (string-ascii 256),
proposal-execution-block: uint,
votes-in-favor: uint,
votes-against: uint,
is-proposal-executed: bool,
}
)
(define-map user-proposal-votes
{
voting-user: principal,
proposal-identifier: uint,
}
bool
)
(define-map user-borrowing-limits
principal
uint
)
(define-map supported-token-contracts
principal
bool
)
(define-map validated-users
principal
bool
)
(define-map validated-contracts
principal
bool
)
;; Define custom token type
(define-trait token-interface (
(transfer?
(uint principal principal)
(response bool uint)
)
(get-balance
(principal)
(response uint uint)
)
))
;; Helper function to check if a token is supported
(define-private (is-token-supported (token-contract <token-interface>))
(default-to false
(map-get? supported-token-contracts (contract-of token-contract))
)
)
;; Helper function to validate user
(define-private (validate-user (user-address principal))
(begin
(map-set validated-users user-address true)
(ok true)
)
)
;; Helper function to validate contract
(define-private (validate-contract (contract-address principal))
(begin
(map-set validated-contracts contract-address true)
(ok true)
)
)
;; Helper function to check if user is validated
(define-private (is-user-validated (user-address principal))
(default-to false (map-get? validated-users user-address))
)
;; Helper function to check if contract is validated
(define-private (is-contract-validated (contract-address principal))
(default-to false (map-get? validated-contracts contract-address))
)
;; Governance token minting function (simplified for demonstration)
(define-public (mint-governance-tokens (token-amount uint))
(begin
(asserts! (> token-amount u0) ERROR-INVALID-TOKEN-AMOUNT)
(asserts! (<= token-amount u1000000000) ERROR-TOKEN-AMOUNT-EXCEEDS-MAXIMUM)
(ft-mint? governance-token token-amount tx-sender)
)
)
;; Flash token minting function (simplified for demonstration)
(define-public (mint-flash-loan-tokens (token-amount uint))
(begin
(asserts! (> token-amount u0) ERROR-INVALID-TOKEN-AMOUNT)
(asserts! (<= token-amount u1000000000) ERROR-TOKEN-AMOUNT-EXCEEDS-MAXIMUM)
(ft-mint? flash-loan-token token-amount tx-sender)
)
)
;; Governance function to create a proposal
(define-public (create-governance-proposal (proposal-description (string-ascii 256)))
(let (
(new-proposal-id (+ (var-get total-governance-proposals) u1))
(proposal-creator-token-balance (ft-get-balance governance-token tx-sender))
)
(asserts! (>= proposal-creator-token-balance u100000000)
ERROR-INSUFFICIENT-GOVERNANCE-TOKENS
)
;; Require 100 governance tokens to create a proposal
(asserts! (> (len proposal-description) u0) ERROR-INVALID-TOKEN-AMOUNT)
(map-set governance-proposals new-proposal-id {
proposal-creator: tx-sender,
proposal-description: proposal-description,
proposal-execution-block: (+ stacks-block-height (var-get governance-timelock-duration)),
votes-in-favor: u0,
votes-against: u0,
is-proposal-executed: false,
})
(var-set total-governance-proposals new-proposal-id)
(print {
event: "governance-proposal-created",
proposal-id: new-proposal-id,
proposal-creator: tx-sender,
})
(ok new-proposal-id)
)
)
;; Governance function to vote on a proposal
(define-public (vote-on-governance-proposal
(proposal-id uint)
(is-vote-in-favor bool)
)
(let (
(proposal-details (unwrap! (map-get? governance-proposals proposal-id)
ERROR-GOVERNANCE-PROPOSAL-NOT-FOUND
))
(voter-token-balance (ft-get-balance governance-token tx-sender))
)
(asserts!
(< stacks-block-height (get proposal-execution-block proposal-details))
ERROR-GOVERNANCE-PROPOSAL-EXPIRED
)
(asserts!
(not (default-to false
(map-get? user-proposal-votes {
voting-user: tx-sender,
proposal-identifier: proposal-id,
})
))
ERROR-NOT-ADMINISTRATOR
)
(map-set user-proposal-votes {
voting-user: tx-sender,
proposal-identifier: proposal-id,
}
true
)
(if is-vote-in-favor
(map-set governance-proposals proposal-id
(merge proposal-details { votes-in-favor: (+ (get votes-in-favor proposal-details) voter-token-balance) })
)
(map-set governance-proposals proposal-id
(merge proposal-details { votes-against: (+ (get votes-against proposal-details) voter-token-balance) })
)
)
(print {
event: "governance-vote-cast",
proposal-id: proposal-id,
voting-user: tx-sender,
is-vote-in-favor: is-vote-in-favor,
})
(ok true)
)
)
;; Governance function to execute a proposal
(define-public (execute-governance-proposal (proposal-id uint))
(let ((proposal-details (unwrap! (map-get? governance-proposals proposal-id)
ERROR-GOVERNANCE-PROPOSAL-NOT-FOUND
)))
(asserts!
(>= stacks-block-height (get proposal-execution-block proposal-details))
ERROR-GOVERNANCE-TIMELOCK-NOT-EXPIRED
)
(asserts! (not (get is-proposal-executed proposal-details))
ERROR-NOT-ADMINISTRATOR
)
(asserts!
(> (get votes-in-favor proposal-details)
(get votes-against proposal-details)
)
ERROR-INSUFFICIENT-GOVERNANCE-TOKENS
)
;; Execute proposal logic here (e.g., change contract parameters)
(map-set governance-proposals proposal-id
(merge proposal-details { is-proposal-executed: true })
)
(print {
event: "governance-proposal-executed",
proposal-id: proposal-id,
})
(ok true)
)
)
;; Admin function to set borrowing limit for a user
(define-public (set-user-borrowing-limit
(user-address principal)
(borrowing-limit uint)
)
(begin
(asserts! (is-eq tx-sender CONTRACT-ADMINISTRATOR) ERROR-NOT-ADMINISTRATOR)
(asserts! (> borrowing-limit u0) ERROR-INVALID-BORROWING-LIMIT)
(asserts! (<= borrowing-limit u1000000000) ERROR-BORROWING-LIMIT-TOO-HIGH)
;; Validate and store user before setting limit
(asserts! (is-ok (validate-user user-address)) ERROR-INVALID-USER)
(asserts! (is-user-validated user-address) ERROR-INVALID-USER)
(map-set user-borrowing-limits user-address borrowing-limit)
(print {
event: "user-borrowing-limit-set",
user: user-address,
limit: borrowing-limit,
})
(ok true)
)
)
;; Admin function to add a supported token contract
(define-public (add-supported-token-contract (token-contract-address principal))
(begin
(asserts! (is-eq tx-sender CONTRACT-ADMINISTRATOR) ERROR-NOT-ADMINISTRATOR)
;; Validate and store contract before adding support
(asserts! (is-ok (validate-contract token-contract-address))
ERROR-INVALID-TOKEN-CONTRACT
)
(asserts! (is-contract-validated token-contract-address)
ERROR-INVALID-TOKEN-CONTRACT
)
(map-set supported-token-contracts token-contract-address true)
(print {
event: "token-contract-supported",
token-contract: token-contract-address,
})
(ok true)
)
)
;; Read-only function to get user's token balance
(define-read-only (get-user-token-balance
(user-address principal)
(token-contract <token-interface>)
)
(default-to u0
(map-get? user-token-balances {
user-address: user-address,
token-contract: (contract-of token-contract),
})
)
)
;; Read-only function to get total protocol liquidity
(define-read-only (get-total-protocol-liquidity)
(var-get total-protocol-liquidity)
)
;; Read-only function to get current flash loan fee
(define-read-only (get-current-flash-loan-fee)
(var-get flash-loan-fee-basis-points)
)
;; Read-only function to check if an address is whitelisted
(define-read-only (is-address-whitelisted (user-address principal))
(default-to false (map-get? whitelisted-addresses user-address))
)
;; Read-only function to retrieve governance proposal details
(define-read-only (get-governance-proposal-details (proposal-id uint))
(map-get? governance-proposals proposal-id)
)
;; Read-only function to get user's borrowing limit
(define-read-only (get-user-borrowing-limit (user-address principal))
(default-to u0 (map-get? user-borrowing-limits user-address))
)