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penalty view function #19

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penalty view function #19

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2 changes: 1 addition & 1 deletion contracts/mtoken/Move.lock
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Original file line number Diff line number Diff line change
Expand Up @@ -2,7 +2,7 @@

[move]
version = 3
manifest_digest = "621AB19773C2DEDCF619E96217605A9FF2BC18173F9DF2D50083C0CE7C974030"
manifest_digest = "1253F4654A86D7FC13E19FC669EA78F29BAC19E2F349101A7A9C44F1BB8E18CC"
deps_digest = "3C4103934B1E040BB6B23F1D610B4EF9F2F1166A50A104EADCF77467C004C600"
dependencies = [
{ id = "Sui", name = "Sui" },
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45 changes: 29 additions & 16 deletions contracts/mtoken/sources/mtoken.move
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Original file line number Diff line number Diff line change
Expand Up @@ -174,22 +174,8 @@ module mtoken::mtoken {
// Ensure current time is within the valid range
assert!(current_time >= manager.start_time_s, ERedeemingBeforeStartTime);

// Interpolate penalty linearly
let end_penalty = decimal::from(manager.end_penalty_numerator)
.mul(decimal::from(withdraw_amount))
.div(decimal::from(manager.penalty_denominator));

let penalty_amount = if (current_time < manager.end_time_s) {
let start_penalty = decimal::from(manager.start_penalty_numerator)
.mul(decimal::from(withdraw_amount))
.div(decimal::from(manager.penalty_denominator));

let time_weight = decimal::from(manager.end_time_s)
.sub(decimal::from(current_time))
.div(decimal::from(manager.end_time_s).sub(decimal::from(manager.start_time_s)));

start_penalty.mul(time_weight).add(end_penalty.mul(decimal::from(1).sub(time_weight))).ceil()
} else { end_penalty.ceil() };
// Get penalty amount
let penalty_amount = manager.get_penalty_amount(withdraw_amount, clock);

assert!(penalty_coin.value() >= penalty_amount, ENotEnoughPenaltyFunds);

Expand Down Expand Up @@ -234,6 +220,33 @@ module mtoken::mtoken {
coin::from_balance(balance, ctx)
}

public fun get_penalty_amount<MToken, Vesting, Penalty>(
manager: &VestingManager<MToken, Vesting, Penalty>,
mtoken_burn_amount: u64,
clock: &Clock,
): u64 {
let current_time = clock::timestamp_ms(clock) / 1000;

// Interpolate penalty linearly
let end_penalty = decimal::from(manager.end_penalty_numerator)
.mul(decimal::from(mtoken_burn_amount))
.div(decimal::from(manager.penalty_denominator));

let penalty_amount = if (current_time < manager.end_time_s) {
let start_penalty = decimal::from(manager.start_penalty_numerator)
.mul(decimal::from(mtoken_burn_amount))
.div(decimal::from(manager.penalty_denominator));

let time_weight = decimal::from(manager.end_time_s)
.sub(decimal::from(current_time))
.div(decimal::from(manager.end_time_s).sub(decimal::from(manager.start_time_s)));

start_penalty.mul(time_weight).add(end_penalty.mul(decimal::from(1).sub(time_weight))).ceil()
} else { end_penalty.ceil() };

penalty_amount
}

// ===== View functions =====

public fun manager<MToken, Vesting, Penalty>(admin_cap: &AdminCap<MToken, Vesting, Penalty>): ID { admin_cap.id.to_inner() }
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