use crate::app_interface::item_library::ItemLibrary;
use crate::app_interface::move_library::MoveLibrary;
use crate::app_interface::species_library::SpeciesLibrary;
use crate::app_interface::type_library::Typelibrary;
use crate::app_interface::LevelInt;
use alloc::rc::Rc;

pub mod item_library;
pub mod move_library;
pub mod species_library;
pub mod type_library;

pub trait StaticDataTrait {
    fn move_library(&self) -> MoveLibrary;
    fn item_library(&self) -> ItemLibrary;
    fn species_library(&self) -> SpeciesLibrary;
    fn type_library(&self) -> Typelibrary;
}

pub type StaticData = Rc<dyn StaticDataTrait>;

pub trait LibrarySettingsTrait {
    fn maximum_level(&self) -> LevelInt;
}

pub type LibrarySettings = Rc<dyn LibrarySettingsTrait>;

#[cfg(not(feature = "mock_data"))]
mod implementation {
    use super::*;
    use crate::app_interface::item_library::ItemLibraryImpl;
    use crate::app_interface::move_library::MoveLibraryImpl;
    use crate::app_interface::species_library::SpeciesLibraryImpl;
    use crate::app_interface::type_library::TypeLibraryImpl;
    use crate::app_interface::{get_hash, StringKey};
    use crate::handling::cached_value::CachedValue;
    use crate::handling::extern_ref::{ExternRef, ExternalReferenceType};
    use crate::handling::Cacheable;
    use crate::{cached_value, cached_value_getters};
    use spin::RwLock;

    struct StaticDataInner {
        reference: ExternRef<StaticDataImpl>,
        move_library: CachedValue<MoveLibrary>,
        item_library: CachedValue<ItemLibrary>,
        species_library: CachedValue<SpeciesLibrary>,
        type_library: CachedValue<Typelibrary>,
        settings: CachedValue<LibrarySettings>,
    }

    #[derive(Clone)]
    pub struct StaticDataImpl {
        inner: Rc<StaticDataInner>,
    }

    impl StaticDataImpl {
        #[cfg(not(feature = "mock_data"))]
        pub(crate) fn new(reference: ExternRef<StaticDataImpl>) -> Self {
            Self::from_ref(reference, &|reference| Self {
                inner: Rc::new(StaticDataInner {
                    reference,
                    move_library: cached_value!({
                        Rc::new(static_data_get_move_library(reference).get_value().unwrap())
                    }),
                    item_library: cached_value!({
                        Rc::new(static_data_get_item_library(reference).get_value().unwrap())
                    }),
                    species_library: cached_value!({
                        Rc::new(
                            static_data_get_species_library(reference)
                                .get_value()
                                .unwrap(),
                        )
                    }),
                    type_library: cached_value!({
                        Rc::new(static_data_get_type_library(reference).get_value().unwrap())
                    }),
                    settings: cached_value!({
                        Rc::new(
                            static_data_get_library_settings(reference)
                                .get_value()
                                .unwrap(),
                        )
                    }),
                }),
            })
        }
    }

    impl StaticDataTrait for StaticDataImpl {
        cached_value_getters! {
            fn move_library(&self) -> MoveLibrary;
            fn item_library(&self) -> ItemLibrary;
            fn species_library(&self) -> SpeciesLibrary;
            fn type_library(&self) -> Typelibrary;
        }
    }

    crate::handling::cacheable::cacheable!(StaticDataImpl);

    #[cfg(not(feature = "mock_data"))]
    impl ExternalReferenceType for StaticDataImpl {
        fn from_extern_value(reference: ExternRef<Self>) -> Self {
            StaticDataImpl::new(reference)
        }
    }

    #[derive(Clone)]
    pub struct LibrarySettingsImpl {
        inner: Rc<LibrarySettingsInner>,
    }

    struct LibrarySettingsInner {
        maximum_level: CachedValue<LevelInt>,
    }

    impl LibrarySettingsImpl {
        #[cfg(not(feature = "mock_data"))]
        pub(crate) fn new(ptr: ExternRef<LibrarySettingsImpl>) -> Self {
            Self {
                inner: Rc::new(LibrarySettingsInner {
                    maximum_level: cached_value!({ library_settings_get_maximum_level(ptr) }),
                }),
            }
        }
    }

    impl LibrarySettingsTrait for LibrarySettingsImpl {
        cached_value_getters! {
            fn maximum_level(&self) -> LevelInt;
        }
    }

    #[cfg(not(feature = "mock_data"))]
    impl ExternalReferenceType for LibrarySettingsImpl {
        fn from_extern_value(reference: ExternRef<Self>) -> Self {
            LibrarySettingsImpl::new(reference)
        }
    }

    #[cfg(not(feature = "mock_data"))]
    extern "wasm" {
        fn static_data_get_move_library(
            ptr: ExternRef<StaticDataImpl>,
        ) -> ExternRef<MoveLibraryImpl>;
        fn static_data_get_item_library(
            ptr: ExternRef<StaticDataImpl>,
        ) -> ExternRef<ItemLibraryImpl>;
        fn static_data_get_species_library(
            ptr: ExternRef<StaticDataImpl>,
        ) -> ExternRef<SpeciesLibraryImpl>;
        fn static_data_get_type_library(
            ptr: ExternRef<StaticDataImpl>,
        ) -> ExternRef<TypeLibraryImpl>;
        fn static_data_get_library_settings(
            ptr: ExternRef<StaticDataImpl>,
        ) -> ExternRef<LibrarySettingsImpl>;

        fn library_settings_get_maximum_level(ptr: ExternRef<LibrarySettingsImpl>) -> LevelInt;
    }

    pub trait DataLibrary<T>: Cacheable
    where
        T: Clone,
    {
        fn get_cache(&self) -> &RwLock<hashbrown::HashMap<u32, T>>;
        fn get_self_ref(&self) -> ExternRef<Self>
        where
            Self: Sized;
        fn _get_ref_by_name(ptr: ExternRef<Self>, name: ExternRef<StringKey>) -> u32
        where
            Self: Sized;
        fn _get_ref_by_hash(ptr: ExternRef<Self>, hash: u32) -> u32
        where
            Self: Sized;

        fn _from_external_ref_index(index: u32) -> Option<T>
        where
            Self: Sized;

        fn get(&self, name: &StringKey) -> Option<T>
        where
            Self: Sized,
        {
            if let Some(v) = self.get_cache().read().get(&name.hash()) {
                return Some(v.clone());
            }

            let index = Self::_get_ref_by_name(self.get_self_ref(), name.ptr());
            let v = Self::_from_external_ref_index(index);
            if let Some(v) = &v {
                self.get_cache().write().insert(name.hash(), v.clone());
            }
            v
        }

        fn get_by_str(&self, name: &str) -> Option<T>
        where
            Self: Sized,
        {
            self.get_by_hash(get_hash(name))
        }

        fn get_by_hash(&self, hash: u32) -> Option<T>
        where
            Self: Sized,
        {
            if let Some(v) = self.get_cache().read().get(&hash) {
                return Some(v.clone());
            }

            let index = Self::_get_ref_by_hash(self.get_self_ref(), hash);
            let v = Self::_from_external_ref_index(index);
            if let Some(v) = &v {
                self.get_cache().write().insert(hash, v.clone());
            }
            v
        }
    }
}

#[cfg(not(feature = "mock_data"))]
pub use implementation::*;

#[cfg(feature = "mock_data")]
mod mocked {
    use crate::app_interface::StringKey;
    use crate::handling::extern_ref::ExternRef;
    use spin::RwLock;

    #[cfg(feature = "mock_data")]
    pub trait DataLibrary<T>
    where
        T: Clone,
    {
        fn get_cache(&self) -> &RwLock<hashbrown::HashMap<u32, T>>;
        fn get_self_ref(&self) -> ExternRef<Self>
        where
            Self: Sized;

        fn get(&self, name: &StringKey) -> Option<T>
        where
            Self: Sized,
        {
            self.get_cache().read().get(&name.hash()).cloned()
        }

        fn get_by_hash(&self, hash: u32) -> Option<T>
        where
            Self: Sized,
        {
            self.get_cache().read().get(&hash).cloned()
        }

        fn insert(&self, hash: u32, item: T) {
            self.get_cache().write().insert(hash, item);
        }
    }
}

#[cfg(feature = "mock_data")]
pub use mocked::*;