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///////////////////////////////////////////////////////////////////////////////
//
//  Copyright 2018-2023 Robonomics Network <research@robonomics.network>
//
//  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.
//
///////////////////////////////////////////////////////////////////////////////
//! Low-level types used throughout the Robonomics code.

#![warn(missing_docs)]
#![cfg_attr(not(feature = "std"), no_std)]

use hex_literal::hex;
use sp_runtime::{
    generic,
    traits::{BlakeTwo256, IdentifyAccount, Verify},
    MultiSignature, OpaqueExtrinsic,
};

/// An index to a block.
pub type BlockNumber = u32;

/// Alias to 512-bit hash when used in the context of a transaction signature on the chain.
pub type Signature = MultiSignature;

/// Some way of identifying an account on the chain. We intentionally make it equivalent
/// to the public key of our transaction signing scheme.
pub type AccountId = <<Signature as Verify>::Signer as IdentifyAccount>::AccountId;

/// The type for looking up accounts. We don't expect more than 4 billion of them.
pub type AccountIndex = u32;

/// Id used for identifying assets.
pub type AssetId = u32;

/// Balance of an account.
pub type Balance = u128;

/// The amount type, should be signed version of balance.
pub type Amount = i128;

/// Type used for expressing timestamp.
pub type Moment = u64;

/// Index of a transaction in the chain.
pub type Nonce = u32;

/// A hash of some data used by the chain.
pub type Hash = sp_core::H256;

/// A timestamp: milliseconds since the unix epoch.
/// `u64` is enough to represent a duration of half a billion years, when the
/// time scale is milliseconds.
pub type Timestamp = u64;

/// Digest item type.
pub type DigestItem = generic::DigestItem;

/// Header type.
pub type Header = generic::Header<BlockNumber, BlakeTwo256>;

/// Block type.
pub type Block = generic::Block<Header, OpaqueExtrinsic>;

/// Block ID.
pub type BlockId = generic::BlockId<Block>;

/// Set of community accounts.
#[derive(Debug, Clone, Copy, PartialEq, Eq, Hash)]
pub enum CommunityAccount {
    /// Treasury manage community funds via open governance.
    Treasury,
}

impl IdentifyAccount for CommunityAccount {
    type AccountId = AccountId;
    fn into_account(self) -> Self::AccountId {
        match self {
            CommunityAccount::Treasury => AccountId::from(hex![
                "6d6f646c70792f74727372790000000000000000000000000000000000000000"
            ]),
        }
    }
}