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// Copyright (C) 2019-2022 Aleo Systems Inc.
// This file is part of the snarkVM library.

// The snarkVM library 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.

// The snarkVM library 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 the snarkVM library. If not, see <https://www.gnu.org/licenses/>.

use crate::Mode;

/// Operations to inject from a primitive form into a circuit environment.
pub trait Inject {
    type Primitive;

    ///
    /// Initializes a circuit of the given mode and primitive value.
    ///
    fn new(mode: Mode, value: Self::Primitive) -> Self;

    ///
    /// Initializes a constant of the given primitive value.
    ///
    fn constant(value: Self::Primitive) -> Self
    where
        Self: Sized,
    {
        Self::new(Mode::Constant, value)
    }
}

/********************/
/***** IndexMap *****/
/********************/

impl<C0: Eq + core::hash::Hash + Inject<Primitive = P0>, C1: Inject<Primitive = P1>, P0, P1> Inject
    for indexmap::IndexMap<C0, C1>
{
    type Primitive = indexmap::IndexMap<P0, P1>;

    #[inline]
    fn new(mode: Mode, value: Self::Primitive) -> Self {
        value.into_iter().map(|(v0, v1)| (C0::new(mode, v0), C1::new(mode, v1))).collect()
    }
}

/********************/
/****** Arrays ******/
/********************/

impl<C: Inject<Primitive = P>, P> Inject for Vec<C> {
    type Primitive = Vec<P>;

    #[inline]
    fn new(mode: Mode, value: Self::Primitive) -> Self {
        value.into_iter().map(|v| C::new(mode, v)).collect()
    }
}

/********************/
/****** Tuples ******/
/********************/

impl<C0: Inject, C1: Inject> Inject for (C0, C1) {
    type Primitive = (C0::Primitive, C1::Primitive);

    #[inline]
    fn new(mode: Mode, value: Self::Primitive) -> Self {
        (C0::new(mode, value.0), C1::new(mode, value.1))
    }
}

impl<C0: Inject, C1: Inject, C2: Inject> Inject for (C0, C1, C2) {
    type Primitive = (C0::Primitive, C1::Primitive, C2::Primitive);

    #[inline]
    fn new(mode: Mode, value: Self::Primitive) -> Self {
        (C0::new(mode, value.0), C1::new(mode, value.1), C2::new(mode, value.2))
    }
}

impl<C0: Inject, C1: Inject, C2: Inject, C3: Inject> Inject for (C0, C1, C2, C3) {
    type Primitive = (C0::Primitive, C1::Primitive, C2::Primitive, C3::Primitive);

    #[inline]
    fn new(mode: Mode, value: Self::Primitive) -> Self {
        (C0::new(mode, value.0), C1::new(mode, value.1), C2::new(mode, value.2), C3::new(mode, value.3))
    }
}

impl<C0: Inject, C1: Inject, C2: Inject, C3: Inject, C4: Inject> Inject for (C0, C1, C2, C3, C4) {
    type Primitive = (C0::Primitive, C1::Primitive, C2::Primitive, C3::Primitive, C4::Primitive);

    #[inline]
    fn new(mode: Mode, value: Self::Primitive) -> Self {
        (
            C0::new(mode, value.0),
            C1::new(mode, value.1),
            C2::new(mode, value.2),
            C3::new(mode, value.3),
            C4::new(mode, value.4),
        )
    }
}