// This file is part of Substrate.

// Copyright (C) Parity Technologies (UK) Ltd.
// SPDX-License-Identifier: Apache-2.0

// 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.

use super::*;
use frame_support::{
	pallet_prelude::{DispatchResult, *},
	traits::nonfungible::{Inspect, Mutate, Transfer},
};
use sp_std::vec::Vec;

impl<T: Config> Inspect<T::AccountId> for Pallet<T> {
	type ItemId = u128;

	fn owner(index: &Self::ItemId) -> Option<T::AccountId> {
		Regions::<T>::get(RegionId::from(*index)).map(|r| r.owner)
	}

	fn attribute(index: &Self::ItemId, key: &[u8]) -> Option<Vec<u8>> {
		let id = RegionId::from(*index);
		let item = Regions::<T>::get(id)?;
		match key {
			b"begin" => Some(id.begin.encode()),
			b"end" => Some(item.end.encode()),
			b"length" => Some(item.end.saturating_sub(id.begin).encode()),
			b"core" => Some(id.core.encode()),
			b"part" => Some(id.mask.encode()),
			b"owner" => Some(item.owner.encode()),
			b"paid" => Some(item.paid.encode()),
			_ => None,
		}
	}
}

impl<T: Config> Transfer<T::AccountId> for Pallet<T> {
	fn transfer(index: &Self::ItemId, dest: &T::AccountId) -> DispatchResult {
		Self::do_transfer((*index).into(), None, dest.clone()).map_err(Into::into)
	}
}

// We don't allow any of the mutate operations, so the default implementation is used, which will
// return `TokenError::Unsupported` in case any of the operations is called.
impl<T: Config> Mutate<T::AccountId> for Pallet<T> {}
