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// 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.

//! Contains types to define hardware requirements.

use lazy_static::lazy_static;
use sc_sysinfo::Requirements;

lazy_static! {
    /// The hardware requirements as measured on reference hardware.
    ///
    /// These values are provided by Parity, however it is possible
    /// to use your own requirements if you are running a custom chain.
    ///
    /// The reference hardware is describe here:
    /// <https://wiki.polkadot.network/docs/maintain-guides-how-to-validate-polkadot>
    pub static ref SUBSTRATE_REFERENCE_HARDWARE: Requirements = {
        let raw = include_bytes!("reference_hardware.json").as_slice();
        serde_json::from_slice(raw).expect("Hardcoded data is known good; qed")
    };
}

#[cfg(test)]
mod tests {
    use super::*;

    /// `SUBSTRATE_REFERENCE_HARDWARE` can be en- and decoded.
    #[test]
    fn json_static_data() {
        let raw = serde_json::to_string(&*SUBSTRATE_REFERENCE_HARDWARE).unwrap();
        let decoded: Requirements = serde_json::from_str(&raw).unwrap();

        assert_eq!(decoded, SUBSTRATE_REFERENCE_HARDWARE.clone());
    }
}