// Copyright 2016 The Grin Developers
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

//! All the rules required for a cryptocurrency to have reach consensus across
//! the whole network are complex and hard to completely isolate. Some can be
//! simple parameters (like block reward), others complex algorithms (like
//! Merkle sum trees or reorg rules). However, as long as they're simple
//! emough, consensus-relevant constants and short functions should be kept
//! here.

/// The block subsidy amount
pub const REWARD: u64 = 1_000_000_000;

/// Block interval, in seconds
pub const BLOCK_TIME_SEC: u8 = 15;

/// Cuckoo-cycle proof size (cycle length)
pub const PROOFSIZE: usize = 42;

/// Default Cuckoo Cycle size shift used is 28. We may decide to increase it.
/// when difficuty increases.
pub const SIZESHIFT: u32 = 28;

/// Default Cuckoo Cycle easiness, high enough to have good likeliness to find
/// a solution.
pub const EASINESS: u32 = 50;

/// Max target hash, lowest difficulty
pub const MAX_TARGET: [u32; PROOFSIZE] =
	[0xfff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff,
	 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff,
	 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff,
	 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff];

/// The maximum number of inputs or outputs a transaction may have
/// and be deserializable. Only for DoS protection.
pub const MAX_IN_OUT_LEN: u64 = 50000;