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

use rpg_components::components::ability_slots::AbilitySlots;
use rpg_components::components::crafting_materials::CraftingMaterials;
use rpg_components::components::inventory::Storable;
use rpg_components::components::statistics::Statistics;
use rpg_components::config::items::ItemSettings;
use rpg_components::items::Rarities;

use crate::*;

use crate::{CharacterWindow, traits::RightSide};

pub struct AbilityPageRightSide<A: Ability + 'static> {
    snippet: Arc<GuiSnippet>,

    ability_index: usize,

    ability_marker: PhantomData<A>,
}

impl<A: Ability + 'static> AbilityPageRightSide<A> {
    const ABILITY_BUTTON_NAMES: [&'static str; 4] = [
        "first_ability",
        "second_ability",
        "third_ability",
        "fourth_ability",
    ];

    pub fn new(
        commands: &mut Commands,
        gui_handler: &mut GuiHandler,
        item_settings: &mut ItemSettings,
        engine_settings: &mut EngineSettings,
        context: &mut Context,
        hero: Entity,
        reference: &Weak<CharacterWindow>,
    ) -> Result<Self> {
        let snippet = GuiSnippet::from_str(
            commands,
            gui_handler,
            include_str!("../../resources/abilities/right_side.xml"),
        )?;

        let color_settings = item_settings.rarity_color_settings.clone();

        Self::rarity_icon_background(gui_handler, &snippet, "common", color_settings.common)?;
        Self::rarity_icon_background(gui_handler, &snippet, "uncommon", color_settings.uncommon)?;
        Self::rarity_icon_background(gui_handler, &snippet, "magical", color_settings.magical)?;
        Self::rarity_icon_background(gui_handler, &snippet, "rare", color_settings.rare)?;
        Self::rarity_icon_background(gui_handler, &snippet, "epic", color_settings.epic)?;
        Self::rarity_icon_background(gui_handler, &snippet, "legendary", color_settings.legendary)?;

        for (index, name) in Self::ABILITY_BUTTON_NAMES.iter().enumerate() {
            let button: Arc<Button> = snippet.element(name)?;

            button.set_info_icon(
                gui_handler,
                &engine_settings.controller_icon(context, ControllerButton::RightStick)?,
            )?;

            button.set_callback({
                let reference = reference.clone();

                move |commands, gui_handler| {
                    if let Some(menu) = reference.upgrade() {
                        let mut tabs = menu.tabs_mut();
                        let abilities = tabs.abilities::<A>();

                        abilities.right_side.ability_index = index;
                        abilities.update_page(world)?;
                    }

                    Ok(())
                }
            });

            button.set_select_callback({
                let reference = reference.clone();
                let weak_button = Arc::downgrade(&button);

                move |world, selected| {
                    if let Some(menu) = reference.upgrade() {
                        if selected {
                            let entity = unsafe { remove_life_time(world.entity(hero)?) };
                            let abilities = entity.get_component::<AbilitySlots<A>>()?;

                            if let Some(book) = abilities.book(index) {
                                let button = weak_button.upgrade().unwrap();
                                let button_pos = button.position_extent();

                                let target_x = button_pos.0 + button_pos.2 as i32;
                                let target_y = button_pos.1;

                                let statistics = entity.get_component::<Statistics>()?;

                                let gui =
                                    book.create_tooltip(world, statistics, (target_x, target_y))?;
                                gui.enable(world)?;
                                gui.perform_single_check(
                                    world.resources.get_mut()?,
                                    button_pos.0,
                                    button_pos.1,
                                )?;

                                menu.add_tooltip("active_ability", gui);
                            }
                        } else {
                            menu.remove_tooltip(world, "active_ability")?;
                        }
                    }

                    Ok(())
                }
            });

            button.set_custom_callback({
                let reference = reference.clone();

                move |world, button| match button {
                    ControllerButton::Y => {
                        let entity = world.entity_mut(hero)?;

                        let (abilities, materials): (&mut AbilitySlots<A>, &mut CraftingMaterials) =
                            entity.get_components_mut()?;

                        if let Some(ability) = abilities.book_mut(index) {
                            ability.upgrade(materials);

                            if let Some(menu) = reference.upgrade() {
                                menu.tabs_mut()
                                    .abilities::<A>()
                                    .right_side
                                    .refresh(world, hero)?;
                            }
                        }

                        Ok(true)
                    }

                    _ => Ok(false),
                }
            })
        }

        Ok(Self {
            snippet,
            ability_index: 0,
            ability_marker: PhantomData,
        })
    }

    pub fn selected_ability(&self) -> usize {
        self.ability_index
    }

    fn rarity_icon_background(
        gui_handler: &mut GuiHandler,
        gui: &GuiSnippet,
        element: &str,
        color: Color,
    ) -> Result<()> {
        let icon: Arc<Icon> = gui.element(element)?;

        icon.set_background(
            gui_handler,
            FillTypeInfo::Element(
                ElementDescriptor::new(color, Color::Black, 2),
                DisplayableFillType::Square,
            ),
        )
    }

    fn update_crafting_count(
        &self,
        gui_handler: &mut GuiHandler,
        element: &str,
        value: u32,
    ) -> Result<()> {
        let icon: Arc<Icon> = self.snippet.element(element)?;
        icon.set_text(gui_handler, value)?;

        Ok(())
    }

    fn update_ability_icon(
        &self,
        gui_handler: &mut GuiHandler,
        element: &str,
        image: Option<Arc<Image>>,
    ) -> Result<()> {
        let button: Arc<Button> = self.snippet.element(element)?;

        match image {
            Some(image) => {
                button.set_icon(gui_handler, &image)?;
            }
            None => {
                button.clear_icon(gui_handler)?;
            }
        }

        Ok(())
    }

    fn update_active_ability(&self, world: &mut World, abilities: &AbilitySlots<A>) -> Result<()> {
        let grid: Arc<Grid> = self.snippet.element("ability_content")?;
        let (_, rows) = grid.dimensions();

        for y in 0..rows {
            grid.detach(world, 0, y)?;
        }

        if let Some(ability) = abilities.book(self.ability_index) {
            for (index, addon) in ability.addons().iter().enumerate() {
                match addon.as_ref() {
                    Some(addon) => {
                        let addon_type_snippet = GuiSnippet::from_str(
                            world,
                            include_str!("../../resources/abilities/addon_type_snippet.xml"),
                        )?;

                        let addon_icon: Arc<Icon> = addon_type_snippet.element("addon_icon")?;
                        let addon_type: Arc<Label> = addon_type_snippet.element("addon_type")?;
                        let addon_value: Arc<Label> = addon_type_snippet.element("addon_value")?;

                        let gui_handler: &mut GuiHandler = world.resources.get_mut()?;

                        addon_icon.set_icon(gui_handler, &addon.icon())?;
                        addon_type.set_text(gui_handler, &format!("{}", addon.addon_type()))?;
                        addon_value.set_text(gui_handler, &addon.addon_type().val_as_str())?;

                        grid.attach(world, addon_type_snippet, 0, index, 1, 1)?;
                    }
                    None => {
                        let empty_addon = GuiSnippet::from_str(
                            world,
                            include_str!("../../resources/abilities/empty_addon_snippet.xml"),
                        )?;

                        grid.attach(world, empty_addon, 0, index, 1, 1)?;
                    }
                }
            }
        }

        Ok(())
    }

    pub fn next_ability(&mut self, world: &mut World, hero: Entity) -> Result<()> {
        self.ability_index = (self.ability_index + 1) % 4;
        self.refresh(world, hero)
    }
}

impl<A: Ability + 'static> RightSide for AbilityPageRightSide<A> {
    fn refresh(&mut self, world: &mut World, hero: Entity) -> Result<()> {
        let entity = unsafe { remove_life_time(world.entity(hero)?) };

        let crafting = entity.get_component::<CraftingMaterials>()?;

        let gui_handler: &mut GuiHandler = world.resources.get_mut()?;

        self.update_crafting_count(gui_handler, "common", crafting.count(Rarities::Common))?;
        self.update_crafting_count(gui_handler, "uncommon", crafting.count(Rarities::Uncommon))?;
        self.update_crafting_count(gui_handler, "magical", crafting.count(Rarities::Magical))?;
        self.update_crafting_count(gui_handler, "rare", crafting.count(Rarities::Rare))?;
        self.update_crafting_count(gui_handler, "epic", crafting.count(Rarities::Epic))?;
        self.update_crafting_count(
            gui_handler,
            "legendary",
            crafting.count(Rarities::Legendary),
        )?;

        let abilities = entity.get_component::<AbilitySlots<A>>()?;

        for (index, name) in Self::ABILITY_BUTTON_NAMES.iter().enumerate() {
            self.update_ability_icon(
                gui_handler,
                name,
                abilities.book(index).map(|book| book.icon()),
            )?;
        }

        self.update_active_ability(world, abilities)?;

        Ok(())
    }

    fn base(&self) -> &Arc<GuiSnippet> {
        &self.snippet
    }
}