use std::sync::{Arc, Weak};

use pumpkin_data::item_stack::ItemStack;
use pumpkin_data::particle::Particle;
use pumpkin_data::sound::{Sound, SoundCategory};
use pumpkin_data::{entity::EntityType, item::Item};
use pumpkin_util::math::vector3::Vector3;

use crate::entity::{
    Entity, EntityBase, EntityBaseFuture, NBTStorage, NbtFuture,
    ai::goal::{
        breed::BreedGoal, escape_danger::EscapeDangerGoal, follow_parent::FollowParentGoal,
        look_around::RandomLookAroundGoal, look_at_entity::LookAtEntityGoal, swim::SwimGoal,
        tempt::TemptGoal, wander_around::WanderAroundGoal,
    },
    mob::{Mob, MobEntity},
    player::Player,
};
use pumpkin_nbt::compound::NbtCompound;

const TEMPT_ITEMS: &[&Item] = &[&Item::WHEAT];

/// Represents a Cow, a common passive mob that provides milk, leather, and beef.
///
/// Wiki: <https://minecraft.wiki/w/Cow>
pub struct CowEntity {
    pub mob_entity: MobEntity,
}

impl CowEntity {
    pub async fn new(entity: Entity) -> Arc<Self> {
        let mob_entity = MobEntity::new(entity);
        let cow = Self { mob_entity };
        let mob_arc = Arc::new(cow);
        let mob_weak: Weak<dyn Mob> = {
            let mob_arc: Arc<dyn Mob> = mob_arc.clone();
            Arc::downgrade(&mob_arc)
        };

        {
            let mut goal_selector = mob_arc.mob_entity.goals_selector.lock().await;

            goal_selector.add_goal(0, Box::new(SwimGoal::default()));
            goal_selector.add_goal(1, EscapeDangerGoal::new(2.0));
            goal_selector.add_goal(2, BreedGoal::new(1.0));
            goal_selector.add_goal(3, Box::new(TemptGoal::new(1.25, TEMPT_ITEMS)));
            goal_selector.add_goal(4, Box::new(FollowParentGoal::new(1.25)));
            goal_selector.add_goal(5, Box::new(WanderAroundGoal::new(1.0)));
            goal_selector.add_goal(
                6,
                LookAtEntityGoal::with_default(mob_weak, &EntityType::PLAYER, 6.0),
            );
            goal_selector.add_goal(7, Box::new(RandomLookAroundGoal::default()));
        };

        mob_arc
    }
}

impl NBTStorage for CowEntity {
    fn write_nbt<'a>(&'a self, nbt: &'a mut NbtCompound) -> NbtFuture<'a, ()> {
        self.mob_entity.living_entity.write_nbt(nbt)
    }

    fn read_nbt_non_mut<'a>(&'a self, nbt: &'a NbtCompound) -> NbtFuture<'a, ()> {
        self.mob_entity.living_entity.read_nbt_non_mut(nbt)
    }
}

impl Mob for CowEntity {
    fn get_mob_entity(&self) -> &MobEntity {
        &self.mob_entity
    }

    fn mob_interact<'a>(
        &'a self,
        player: &'a Arc<Player>,
        item_stack: &'a mut ItemStack,
    ) -> EntityBaseFuture<'a, bool> {
        Box::pin(async move {
            let is_food = TEMPT_ITEMS.iter().any(|i| i.id == item_stack.item.id);
            if is_food && self.is_breeding_ready() && !self.is_in_love() {
                item_stack.decrement_unless_creative(player.gamemode.load(), 1);

                self.mob_entity.set_love_ticks(600);
                let entity = &self.mob_entity.living_entity.entity;
                let world = entity.world.load();
                let pos = entity.pos.load();

                world
                    .spawn_particle(
                        pos + Vector3::new(0.0, f64::from(entity.height()), 0.0),
                        Vector3::new(0.5, 0.5, 0.5),
                        1.0,
                        7,
                        Particle::Heart,
                    )
                    .await;
                world
                    .play_sound(
                        Sound::EntityCowAmbient,
                        SoundCategory::Neutral,
                        &entity.pos.load(),
                    )
                    .await;
                return true;
            }
            false
        })
    }
}