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use crate::impl_::cell::Cell as CellImpl;
use crate::impl_::lambda::IsLambda1;
use crate::impl_::lambda::IsLambda2;
use crate::impl_::lambda::IsLambda3;
use crate::impl_::lambda::IsLambda4;
use crate::impl_::lambda::IsLambda5;
use crate::impl_::lambda::IsLambda6;
use crate::impl_::lazy::Lazy;
use crate::listener::Listener;
use crate::sodium_ctx::SodiumCtx;
use crate::stream::Stream;
use crate::Dep;

pub struct Cell<A> {
    pub impl_: CellImpl<A>,
}

impl<A> Clone for Cell<A> {
    fn clone(&self) -> Self {
        Cell {
            impl_: self.impl_.clone(),
        }
    }
}

impl<A: Clone + Send + 'static> Cell<A> {
    pub fn new(sodium_ctx: &SodiumCtx, value: A) -> Cell<A> {
        Cell {
            impl_: CellImpl::new(&sodium_ctx.impl_, value),
        }
    }

    pub fn sample(&self) -> A {
        self.impl_.sample()
    }

    pub fn sample_lazy(&self) -> Lazy<A> {
        self.impl_.sample_lazy()
    }

    // use as dependency to lambda1, lambda2, etc.
    pub fn to_dep(&self) -> Dep {
        self.impl_.to_dep()
    }

    pub fn updates(&self) -> Stream<A> {
        Stream {
            impl_: self.impl_.updates(),
        }
    }

    pub fn value(&self) -> Stream<A> {
        Stream {
            impl_: self.impl_.value(),
        }
    }

    pub fn map<B: Clone + Send + 'static, FN: IsLambda1<A, B> + Send + Sync + 'static>(
        &self,
        f: FN,
    ) -> Cell<B> {
        Cell {
            impl_: self.impl_.map(f),
        }
    }

    pub fn lift2<
        B: Clone + Send + 'static,
        C: Clone + Send + 'static,
        FN: IsLambda2<A, B, C> + Send + 'static,
    >(
        &self,
        cb: &Cell<B>,
        f: FN,
    ) -> Cell<C> {
        Cell {
            impl_: self.impl_.lift2(&cb.impl_, f),
        }
    }

    pub fn lift3<
        B: Clone + Send + 'static,
        C: Clone + Send + 'static,
        D: Clone + Send + 'static,
        FN: IsLambda3<A, B, C, D> + Send + 'static,
    >(
        &self,
        cb: &Cell<B>,
        cc: &Cell<C>,
        f: FN,
    ) -> Cell<D> {
        Cell {
            impl_: self.impl_.lift3(&cb.impl_, &cc.impl_, f),
        }
    }

    pub fn lift4<
        B: Clone + Send + 'static,
        C: Clone + Send + 'static,
        D: Clone + Send + 'static,
        E: Clone + Send + 'static,
        FN: IsLambda4<A, B, C, D, E> + Send + 'static,
    >(
        &self,
        cb: &Cell<B>,
        cc: &Cell<C>,
        cd: &Cell<D>,
        f: FN,
    ) -> Cell<E> {
        Cell {
            impl_: self.impl_.lift4(&cb.impl_, &cc.impl_, &cd.impl_, f),
        }
    }

    pub fn lift5<
        B: Clone + Send + 'static,
        C: Clone + Send + 'static,
        D: Clone + Send + 'static,
        E: Clone + Send + 'static,
        F: Clone + Send + 'static,
        FN: IsLambda5<A, B, C, D, E, F> + Send + 'static,
    >(
        &self,
        cb: &Cell<B>,
        cc: &Cell<C>,
        cd: &Cell<D>,
        ce: &Cell<E>,
        f: FN,
    ) -> Cell<F> {
        Cell {
            impl_: self
                .impl_
                .lift5(&cb.impl_, &cc.impl_, &cd.impl_, &ce.impl_, f),
        }
    }

    pub fn lift6<
        B: Clone + Send + 'static,
        C: Clone + Send + 'static,
        D: Clone + Send + 'static,
        E: Clone + Send + 'static,
        F: Clone + Send + 'static,
        G: Clone + Send + 'static,
        FN: IsLambda6<A, B, C, D, E, F, G> + Send + 'static,
    >(
        &self,
        cb: &Cell<B>,
        cc: &Cell<C>,
        cd: &Cell<D>,
        ce: &Cell<E>,
        cf: &Cell<F>,
        f: FN,
    ) -> Cell<G> {
        Cell {
            impl_: self
                .impl_
                .lift6(&cb.impl_, &cc.impl_, &cd.impl_, &ce.impl_, &cf.impl_, f),
        }
    }

    pub fn switch_s(csa: &Cell<Stream<A>>) -> Stream<A> {
        Stream {
            impl_: CellImpl::switch_s(&csa.map(|sa: &Stream<A>| sa.impl_.clone()).impl_),
        }
    }

    pub fn switch_c(cca: &Cell<Cell<A>>) -> Cell<A> {
        Cell {
            impl_: CellImpl::switch_c(&cca.map(|ca: &Cell<A>| ca.impl_.clone()).impl_),
        }
    }

    pub fn listen_weak<K: FnMut(&A) + Send + Sync + 'static>(&self, k: K) -> Listener {
        Listener {
            impl_: self.impl_.listen_weak(k),
        }
    }

    pub fn listen<K: IsLambda1<A, ()> + Send + Sync + 'static>(&self, k: K) -> Listener {
        Listener {
            impl_: self.impl_.listen(k),
        }
    }
}