// Copyright (C) Moondance Labs Ltd.

// This file is part of Tanssi.

// Tanssi 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.

// Tanssi 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 Tanssi.  If not, see <http://www.gnu.org/licenses/>

#[doc(hidden)]

pub mod __reexports {

    pub use frame_support::pallet_prelude::Get;

}

/// Define a `Get` which can have different value in "prod" or "fast" mode.

/// `Get` will return "fast" value if feature "fast-runtime" is enabled.

/// It also provides functions `prod`/`prod_if`/`fast` to write tests for both

/// values, regardless of the feature enabled when compiling the tests.

#[macro_export]

macro_rules! prod_or_fast_parameter_types {

    ($( #[ $attr:meta ] )* $vis:vis const $name:ident: $ty:ty = { prod: $prod:expr, fast: $fast:expr }; $($rest:tt)* ) => {

        $( #[ $attr ] )*

        $vis struct $name;

        impl $name {

            /// Get the value based on if "fast-runtime" feature is enabled.

            /// Return prod value if condition is true, otherwise returns fast value.

            /// Always return prod value.

            /// Always return fast value.

        }

        impl<_I: From<$ty>> $crate::prod_or_fast::__reexports::Get<_I> for $name {

        }

        $crate::prod_or_fast_parameter_types!($($rest)*);

    };

    ($( #[ $attr:meta ] )* $vis:vis $name:ident: $ty:ty = { prod: $prod:expr, fast: $fast:expr }; $($rest:tt)* ) => {

        $( #[ $attr ] )*

        $vis struct $name;

        impl $name {

            /// Get the value based on if "fast-runtime" feature is enabled.

            pub fn get() -> $ty {

                Self::prod_if(!cfg!(feature = "fast-runtime"))

            }

            /// Return prod value if condition is true, otherwise returns fast value.

            pub fn prod_if(b: bool) -> $ty {

                if b { Self::prod() } else { Self::fast() }

            }

            /// Always return prod value.

            pub fn prod() -> $ty {

                $prod

            }

            /// Always return fast value.

            pub fn fast() -> $ty {

                $fast

            }

        }

        impl<_I: From<$ty>> $crate::prod_or_fast::__reexports::Get<_I> for $name {

            fn get() -> _I {

                _I::from(Self::get())

            }

        }

        $crate::prod_or_fast_parameter_types!($($rest)*);

    };

    () => {}

}