Vesting module

[xlc]

• Types
  • struct VestingSchedule
    • start: BlockNumber
    • period: BlockNumber
    • period_count: BlockNumber
    • per_period: Balance // amount of balance to grant for each period of blocks
• Trait
  • Currency: frame_support::traits::LockableCurrency
• Storages
  • Vestings: map AccountId => Vec<VestingSchedule>
    • Make it configuable in chain spec
• Calls
  • fn claim(origin)
  • fn add_vesting(origin, from: AccountId, to: AccountId, vesting: VestingSchedule)
    • transfer amount from from to to and add lock
  • fn update_vesting(origin, who: AccountId, vesting: Vec<VestingSchedule>)
    • ensure root
• Module
  • fn claim(who: AccountId)
    • update locks based on vesting schedule
    • calculate how much is still locked
    • let locked = Self::vestings(who).map(|x| max((now - x.start) / period, 1) * amount).fold(0, |a, b| a + b)
    • Set lock with this amount