use std::fmt::Debug;
use std::ops::Deref;
use std::sync::Arc;

use crate::dynamic_data::libraries::battle_stat_calculator::BattleStatCalculator;
use crate::dynamic_data::libraries::damage_library::DamageLibrary;
use crate::dynamic_data::libraries::misc_library::MiscLibrary;
use crate::dynamic_data::libraries::script_resolver::ScriptCategory;
use crate::dynamic_data::{ItemScript, ScriptResolver};
use crate::dynamic_data::{Script, ScriptOwnerData};
use crate::static_data::Item;
use crate::static_data::StaticData;
use crate::{PkmnResult, StringKey, ValueIdentifiable, ValueIdentifier};

/// The dynamic library stores a static data library, as well as holding different libraries and
/// calculators that might be customized between different generations and implementations.
pub trait DynamicLibrary: Debug + ValueIdentifiable {
    /// The static data is the immutable storage data for this library.
    fn static_data(&self) -> &Box<dyn StaticData>;
    /// The stat calculator deals with the calculation of flat and boosted stats, based on the
    /// Pokemons attributes.
    fn stat_calculator(&self) -> &dyn BattleStatCalculator;
    /// The damage calculator deals with the calculation of things relating to damage.
    fn damage_calculator(&self) -> &dyn DamageLibrary;
    /// The Misc Library holds minor functions that do not fall in any of the other libraries and
    /// calculators.
    fn misc_library(&self) -> &dyn MiscLibrary;

    /// Loads a standard script with a given unique combination of category and key. If no script
    /// can be created with this combination, returns None.
    fn load_script(
        &self,
        owner: ScriptOwnerData,
        _category: ScriptCategory,
        _key: &StringKey,
    ) -> PkmnResult<Option<Arc<dyn Script>>>;
    /// Loads an item script with the given unique key. If no script can be created with this
    /// combinations, returns None. Note that ItemScripts are immutable, as their script should be
    /// shared between all different usages.
    fn load_item_script(&self, _key: &Arc<dyn Item>) -> PkmnResult<Option<Arc<dyn ItemScript>>>;
}

/// The dynamic library stores a static data library, as well as holding different libraries and
/// calculators that might be customized between different generations and implementations.
#[derive(Debug)]
pub struct DynamicLibraryImpl {
    /// A unique identifier so we know what value this is.
    identifier: ValueIdentifier,
    /// The static data is the immutable storage data for this library.
    static_data: Box<dyn StaticData>,
    /// The stat calculator deals with the calculation of flat and boosted stats, based on the
    /// Pokemons attributes.
    stat_calculator: Box<dyn BattleStatCalculator>,
    /// The damage calculator deals with the calculation of things relating to damage.
    damage_calculator: Box<dyn DamageLibrary>,
    /// The Misc Library holds minor functions that do not fall in any of the other libraries and
    /// calculators.
    misc_library: Box<dyn MiscLibrary>,

    /// The script resolver deals with how to resolve the scripts from specific unique key combinations.
    script_resolver: Box<dyn ScriptResolver>,
}

impl DynamicLibraryImpl {
    /// Instantiates a new DynamicLibrary with given parameters.
    pub fn new(
        static_data: Box<dyn StaticData>,
        stat_calculator: Box<dyn BattleStatCalculator>,
        damage_calculator: Box<dyn DamageLibrary>,
        misc_library: Box<dyn MiscLibrary>,
        script_resolver: Box<dyn ScriptResolver>,
    ) -> Self {
        Self {
            identifier: Default::default(),
            static_data,
            stat_calculator,
            damage_calculator,
            misc_library,
            script_resolver,
        }
    }
}

impl DynamicLibrary for DynamicLibraryImpl {
    /// The static data is the immutable storage data for this library.
    fn static_data(&self) -> &Box<dyn StaticData> {
        &self.static_data
    }
    /// The stat calculator deals with the calculation of flat and boosted stats, based on the
    /// Pokemons attributes.
    fn stat_calculator(&self) -> &dyn BattleStatCalculator {
        self.stat_calculator.deref()
    }
    /// The damage calculator deals with the calculation of things relating to damage.
    fn damage_calculator(&self) -> &dyn DamageLibrary {
        self.damage_calculator.deref()
    }
    /// The Misc Library holds minor functions that do not fall in any of the other libraries and
    /// calculators.
    fn misc_library(&self) -> &dyn MiscLibrary {
        self.misc_library.deref()
    }

    /// Loads a standard script with a given unique combination of category and key. If no script
    /// can be created with this combination, returns None.
    fn load_script(
        &self,
        owner: ScriptOwnerData,
        _category: ScriptCategory,
        _key: &StringKey,
    ) -> PkmnResult<Option<Arc<dyn Script>>> {
        self.script_resolver.load_script(owner, _category, _key)
    }
    /// Loads an item script with the given unique key. If no script can be created with this
    /// combinations, returns None. Note that ItemScripts are immutable, as their script should be
    /// shared between all different usages.
    fn load_item_script(&self, _key: &Arc<dyn Item>) -> PkmnResult<Option<Arc<dyn ItemScript>>> {
        todo!()
    }
}

impl ValueIdentifiable for DynamicLibraryImpl {
    fn value_identifier(&self) -> ValueIdentifier {
        self.identifier
    }
}

#[cfg(test)]
pub mod test {
    use super::*;
    use crate::dynamic_data::libraries::battle_stat_calculator::Gen7BattleStatCalculator;
    use crate::dynamic_data::libraries::damage_library::Gen7DamageLibrary;
    use crate::dynamic_data::libraries::misc_library::Gen7MiscLibrary;
    use crate::dynamic_data::EmptyScriptResolver;

    mockall::mock! {
        #[derive(Debug)]
        pub DynamicLibrary{}
        impl DynamicLibrary for DynamicLibrary {
            fn static_data(&self) -> &Box<dyn StaticData>;
            fn stat_calculator(&self) -> &dyn BattleStatCalculator;
            fn damage_calculator(&self) -> &dyn DamageLibrary;
            fn misc_library(&self) -> &dyn MiscLibrary;
            fn load_script(
                &self,
                owner: ScriptOwnerData,
                _category: ScriptCategory,
                _key: &StringKey,
            ) -> PkmnResult<Option<Arc<dyn Script>>>;
            fn load_item_script(&self, _key: &Arc<dyn Item>) -> PkmnResult<Option<Arc<dyn ItemScript>>>;
        }
        impl ValueIdentifiable for DynamicLibrary{
            fn value_identifier(&self) -> ValueIdentifier{
                ValueIdentifier::new(0)
            }
        }
    }

    pub fn build() -> DynamicLibraryImpl {
        DynamicLibraryImpl {
            identifier: Default::default(),
            static_data: Box::new(crate::static_data::libraries::static_data::test::build()),
            stat_calculator: Box::new(Gen7BattleStatCalculator::new()),
            damage_calculator: Box::new(Gen7DamageLibrary::new(false)),
            misc_library: Box::new(Gen7MiscLibrary::new()),
            script_resolver: Box::new(EmptyScriptResolver {
                identifier: Default::default(),
            }),
        }
    }
}