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// Copyright 2022 Parity Technologies (UK) Ltd.
// This file is part of Polkadot.

// Polkadot is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.

// Polkadot is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU General Public License for more details.

// You should have received a copy of the GNU General Public License
// along with Polkadot. If not, see <http://www.gnu.org/licenses/>.

//! Old governance configurations for the Kusama runtime.

use crate::*;
use frame_support::{parameter_types, traits::EitherOfDiverse};

parameter_types! {
	pub LaunchPeriod: BlockNumber = prod_or_fast!(7 * DAYS, 1, "KSM_LAUNCH_PERIOD");
	pub VotingPeriod: BlockNumber = prod_or_fast!(7 * DAYS, 1 * MINUTES, "KSM_VOTING_PERIOD");
	pub FastTrackVotingPeriod: BlockNumber = prod_or_fast!(3 * HOURS, 1 * MINUTES, "KSM_FAST_TRACK_VOTING_PERIOD");
	pub const MinimumDeposit: Balance = 100 * CENTS;
	pub EnactmentPeriod: BlockNumber = prod_or_fast!(8 * DAYS, 1, "KSM_ENACTMENT_PERIOD");
	pub CooloffPeriod: BlockNumber = prod_or_fast!(7 * DAYS, 1 * MINUTES, "KSM_COOLOFF_PERIOD");
	pub const InstantAllowed: bool = true;
	pub const MaxVotes: u32 = 100;
	pub const MaxProposals: u32 = 100;
}

impl pallet_democracy::Config for Runtime {
	type Proposal = Call;
	type Event = Event;
	type Currency = Balances;
	type EnactmentPeriod = EnactmentPeriod;
	type VoteLockingPeriod = EnactmentPeriod;
	type LaunchPeriod = LaunchPeriod;
	type VotingPeriod = VotingPeriod;
	type MinimumDeposit = MinimumDeposit;
	/// A straight majority of the council can decide what their next motion is.
	type ExternalOrigin =
		pallet_collective::EnsureProportionAtLeast<AccountId, CouncilCollective, 1, 2>;
	/// A majority can have the next scheduled referendum be a straight majority-carries vote.
	type ExternalMajorityOrigin =
		pallet_collective::EnsureProportionAtLeast<AccountId, CouncilCollective, 1, 2>;
	/// A unanimous council can have the next scheduled referendum be a straight default-carries
	/// (NTB) vote.
	type ExternalDefaultOrigin =
		pallet_collective::EnsureProportionAtLeast<AccountId, CouncilCollective, 1, 1>;
	/// Two thirds of the technical committee can have an `ExternalMajority/ExternalDefault` vote
	/// be tabled immediately and with a shorter voting/enactment period.
	type FastTrackOrigin =
		pallet_collective::EnsureProportionAtLeast<AccountId, TechnicalCollective, 2, 3>;
	type InstantOrigin =
		pallet_collective::EnsureProportionAtLeast<AccountId, TechnicalCollective, 1, 1>;
	type InstantAllowed = InstantAllowed;
	type FastTrackVotingPeriod = FastTrackVotingPeriod;
	// To cancel a proposal which has been passed, 2/3 of the council must agree to it.
	type CancellationOrigin = EitherOfDiverse<
		EnsureRoot<AccountId>,
		pallet_collective::EnsureProportionAtLeast<AccountId, CouncilCollective, 2, 3>,
	>;
	type BlacklistOrigin = EnsureRoot<AccountId>;
	// To cancel a proposal before it has been passed, the technical committee must be unanimous or
	// Root must agree.
	type CancelProposalOrigin = EitherOfDiverse<
		EnsureRoot<AccountId>,
		pallet_collective::EnsureProportionAtLeast<AccountId, TechnicalCollective, 1, 1>,
	>;
	// Any single technical committee member may veto a coming council proposal, however they can
	// only do it once and it lasts only for the cooloff period.
	type VetoOrigin = pallet_collective::EnsureMember<AccountId, TechnicalCollective>;
	type CooloffPeriod = CooloffPeriod;
	type PreimageByteDeposit = PreimageByteDeposit;
	type OperationalPreimageOrigin = pallet_collective::EnsureMember<AccountId, CouncilCollective>;
	type Slash = Treasury;
	type Scheduler = Scheduler;
	type PalletsOrigin = OriginCaller;
	type MaxVotes = MaxVotes;
	type WeightInfo = weights::pallet_democracy::WeightInfo<Runtime>;
	type MaxProposals = MaxProposals;
}

parameter_types! {
	pub CouncilMotionDuration: BlockNumber = prod_or_fast!(3 * DAYS, 2 * MINUTES, "KSM_MOTION_DURATION");
	pub const CouncilMaxProposals: u32 = 100;
	pub const CouncilMaxMembers: u32 = 100;
}

pub type CouncilCollective = pallet_collective::Instance1;
impl pallet_collective::Config<CouncilCollective> for Runtime {
	type Origin = Origin;
	type Proposal = Call;
	type Event = Event;
	type MotionDuration = CouncilMotionDuration;
	type MaxProposals = CouncilMaxProposals;
	type MaxMembers = CouncilMaxMembers;
	type DefaultVote = pallet_collective::PrimeDefaultVote;
	type WeightInfo = weights::pallet_collective_council::WeightInfo<Runtime>;
}

parameter_types! {
	pub const CandidacyBond: Balance = 100 * CENTS;
	// 1 storage item created, key size is 32 bytes, value size is 16+16.
	pub const VotingBondBase: Balance = deposit(1, 64);
	// additional data per vote is 32 bytes (account id).
	pub const VotingBondFactor: Balance = deposit(0, 32);
	/// Daily council elections
	pub TermDuration: BlockNumber = prod_or_fast!(24 * HOURS, 2 * MINUTES, "KSM_TERM_DURATION");
	pub const DesiredMembers: u32 = 19;
	pub const DesiredRunnersUp: u32 = 19;
	pub const MaxVoters: u32 = 10 * 1000;
	pub const MaxCandidates: u32 = 1000;
	pub const PhragmenElectionPalletId: LockIdentifier = *b"phrelect";
}

// Make sure that there are no more than `MaxMembers` members elected via Phragmen.
const_assert!(DesiredMembers::get() <= CouncilMaxMembers::get());

impl pallet_elections_phragmen::Config for Runtime {
	type Event = Event;
	type Currency = Balances;
	type ChangeMembers = Council;
	type InitializeMembers = Council;
	type CurrencyToVote = frame_support::traits::U128CurrencyToVote;
	type CandidacyBond = CandidacyBond;
	type VotingBondBase = VotingBondBase;
	type VotingBondFactor = VotingBondFactor;
	type LoserCandidate = Treasury;
	type KickedMember = Treasury;
	type DesiredMembers = DesiredMembers;
	type DesiredRunnersUp = DesiredRunnersUp;
	type TermDuration = TermDuration;
	type MaxVoters = MaxVoters;
	type MaxCandidates = MaxCandidates;
	type PalletId = PhragmenElectionPalletId;
	type WeightInfo = weights::pallet_elections_phragmen::WeightInfo<Runtime>;
}

parameter_types! {
	pub TechnicalMotionDuration: BlockNumber = prod_or_fast!(3 * DAYS, 2 * MINUTES, "KSM_MOTION_DURATION");
	pub const TechnicalMaxProposals: u32 = 100;
	pub const TechnicalMaxMembers: u32 = 100;
}

pub type TechnicalCollective = pallet_collective::Instance2;
impl pallet_collective::Config<TechnicalCollective> for Runtime {
	type Origin = Origin;
	type Proposal = Call;
	type Event = Event;
	type MotionDuration = TechnicalMotionDuration;
	type MaxProposals = TechnicalMaxProposals;
	type MaxMembers = TechnicalMaxMembers;
	type DefaultVote = pallet_collective::PrimeDefaultVote;
	type WeightInfo = weights::pallet_collective_technical_committee::WeightInfo<Runtime>;
}

impl pallet_membership::Config<pallet_membership::Instance1> for Runtime {
	type Event = Event;
	type AddOrigin = MoreThanHalfCouncil;
	type RemoveOrigin = MoreThanHalfCouncil;
	type SwapOrigin = MoreThanHalfCouncil;
	type ResetOrigin = MoreThanHalfCouncil;
	type PrimeOrigin = MoreThanHalfCouncil;
	type MembershipInitialized = TechnicalCommittee;
	type MembershipChanged = TechnicalCommittee;
	type MaxMembers = TechnicalMaxMembers;
	type WeightInfo = weights::pallet_membership::WeightInfo<Runtime>;
}