import { World } from './world';
import { PlayerEntity } from './entity';
import { Identifier, Hand, Pos, ActionResult, Direction, SimpleRegistry, JavaObjectWrapper, SimpleBuiltinRegistry } from './core';
import { CompoundTag } from './tag';
import { useBridge, addBridge } from 'scriptcraft-core';
import { Inventory } from './inventory';
import { Registry } from './registry';

/**
 * Block Material
 */
export class Material extends JavaObjectWrapper {
    /**
     * Create Material Wrapper From Java Object
     * @param javaObject Java Object
     */
    constructor(javaObject: JavaObject | JavaObjectWrapper) {
        super(javaObject);
        this.assertValidJavaObject('Material');
    }

    /**
     * Get Associated Material Color
     * @returns Material Color
     */
    getColor(): MaterialColor {
        const obj = useBridge('Material.getColor', this.getJavaObject()) as JavaObject;
        if (obj !== null) {
            return new MaterialColor(obj);
        } else {
            return null;
        }
    }
}

/**
 * Block Material Color
 */
export class MaterialColor extends JavaObjectWrapper {
    /**
     * Create Material Color Wrapper From Java Object
     * @param javaObject Java Object
     */
    constructor(javaObject: JavaObject | JavaObjectWrapper) {
        super(javaObject);
        this.assertValidJavaObject('MaterialColor');
    }
}

/**
 * Settings for {@link CustomBlock}
 */
export class BlockSettings {
    #material: Material;
    #materialColor: MaterialColor;

    #resistance: number;
    #hardness: number;

    /**
     * Create Block Settings
     * @param material Material
     * @param materialColor Material Color
     */
    constructor(material: Material);
    constructor(material: Material, materialColor: MaterialColor);
    constructor(material: Material, materialColor?: MaterialColor) {
        this.#material = material;
        this.#materialColor = materialColor !== null ? materialColor : material.getColor();

        this.#resistance = 0;
        this.#hardness = 0;
    }

    /**
     * Set Block Strength
     * @param hardness Hardness Value
     * @param resistance Blast Resistance Value
     */
    strength(hardness: number, resistance: number): BlockSettings {
        this.#hardness = hardness;
        this.#resistance = resistance;
        return this;
    }

    /**
     * Set Hardness
     * @param hardness Hardness Value
     */
    hardness(hardness: number): BlockSettings {
        this.#hardness = hardness;
        return this;
    }

    /**
     * Set Blast Resistance
     * @param resistance Blast Resistance Value
     */
    resistance(resistance: number): BlockSettings {
        this.#resistance = resistance;
        return this;
    }

    /**
     * Get Material
     * @returns Material
     */
    getMaterial(): Material {
        return this.#material;
    }

    /**
     * Set Material
     * @param material Material
     */
    material(material: Material): BlockSettings {
        this.#material = material;
        return this;
    }

    /**
     * Set Material Color
     * @param materialColor Material Color
     */
    materialColor(materialColor: MaterialColor): BlockSettings {
        this.#materialColor = materialColor;
        return this;
    }

    /**
     * Get Material Color
     * @returns Material Color
     */
    getMaterialColor(): MaterialColor {
        return this.#materialColor;
    }

    /**
     * Get Blast Resistance
     * @returns Blast Resistance
     */
    getResistance(): number {
        return this.#resistance;
    }

    /**
     * Get Hardness
     * @returns Hardness
     */
    getHardness(): number {
        return this.#hardness;
    }

    /**
     * Create Java Object
     * @returns Java Object
     */
    createJavaObject(): JavaObject {
        return useBridge('BlockSettings.create', this.getMaterial().getJavaObject(), this.getMaterialColor().getJavaObject(), this.getHardness(), this.getResistance()) as JavaObject;
    }
}

/**
 * Custom Block
 */
export class CustomBlock {
    readonly #settings: Readonly<BlockSettings>;
    readonly #propertyBuilder: BlockStatePropertyBuilder;

    /**
     * Create Custom Block
     * @param settings Block Settings
     */
    constructor(settings: BlockSettings) {
        this.#settings = Object.freeze(settings);
        this.#propertyBuilder = BlockStatePropertyBuilder.create();
        this.appendProperties(this.getPropertyBuilder());
    }

    /**
     * Get Block Settings
     * @returns Block Settings
     */
    getSettings(): Readonly<BlockSettings> {
        return this.#settings;
    }

    /**
     * Get Block State Property Builder
     * @returns Block State Property Builder
     */
    getPropertyBuilder(): BlockStatePropertyBuilder {
        return this.#propertyBuilder;
    }

    /**
     * Called When The Block Is Used
     * @param world World
     * @param blockState Block State
     * @param pos Block Position
     * @param side Side Of The Block Used
     * @param player Player
     * @param hand Hand
     * @returns Action Result
     */
    onUse(world: World, blockState: BlockState, pos: Pos, side: Direction, player: PlayerEntity, hand: Hand): ActionResult {
        return ActionResult.PASS;
    }

    /**
     * Add Block State Properties
     * @param builder Block State Property Builder
     */
    appendProperties(builder: BlockStatePropertyBuilder): void {
    }
}

/**
 * Custom Block Entity
 */
export class CustomBlockEntity {
    /**
     * World
     */
    protected world: World;
    /**
     * Position
     */
    protected pos: Pos;

    /**
     * Set Location
     * @param world New World
     * @param pos New Position
     */
    setLocation(world: World, pos: Pos): void {
        this.world = world;
        this.pos = pos;
    }

    /**
     * Save Data To Tag
     * @param tag Tag
     * @returns Tag
     */
    toTag(tag: CompoundTag): CompoundTag {
        return tag;
    }

    /**
     * Load Data From Tag
     * @param tag Tag
     */
    fromTag(tag: CompoundTag): void {}

    /**
     * Runs Every Tick
     */
    tick(): void {}

    /**
     * Get World
     * @returns World
     */
    getWorld(): World {
        return this.world;
    }

    /**
     * Get Position
     * @returns Position
     */
    getPos(): Pos {
        return this.pos;
    }

    /**
     * Mark Dirty
     */
    markDirty(): void {
        if (this.getWorld() !== null) {
            const entity = this.getWorld().getBlockEntity(this.getPos());
            if (entity !== null) {
                entity.markDirty();
            }
        }
    }

    /**
     * Get Custom Block Entity by ID
     * @param id ID
     * @returns Custom Block Entity
     */
    static getByID(id: number): CustomBlockEntity {
        return BlockRegistry.INSTANCE.getCustomBlockEntityByID(id);
    }
}

/**
 * Block
 */
export class Block extends JavaObjectWrapper {
    /**
     * Create Block Wrapper From Java Object
     * @param javaObject Java Object
     */
    constructor(javaObject: JavaObject | JavaObjectWrapper) {
        super(javaObject);
        this.assertValidJavaObject('Block');
    }

    /**
     * Get Block Material
     */
    getMaterial(): Material {
        const obj = useBridge('Block.getMaterial', this.getJavaObject()) as JavaObject;
        if (obj !== null) {
            return new Material(obj);
        } else {
            return null;
        }
    }

    /**
     * Get Block Material Color
     */
    getMaterialColor(): MaterialColor {
        const obj = useBridge('Block.getMaterialColor', this.getJavaObject()) as JavaObject;
        if (obj !== null) {
            return new MaterialColor(obj);
        } else {
            return null;
        }
    }

    /**
     * Get Block ID
     * @returns ID
     */
    getID(): Identifier {
        const obj = useBridge('Block.getID', this.getJavaObject()) as string;
        if (obj !== null) {
            return new Identifier(obj);
        } else {
            return null;
        }
    }

    /**
     * Get Default Block State
     * @returns Default Block State
     */
    getDefaultState(): BlockState {
        const obj = useBridge('Block.getDefaultState', this.getJavaObject()) as JavaObject;
        if (obj !== null) {
            return new BlockState(obj);
        } else {
            return null;
        }
    }
}

/**
 * Custom Block State Property Builder
 */
export class BlockStatePropertyBuilder extends JavaObjectWrapper {
    /**
     * Create Block State Property Builder Wrapper From Java Object
     * @param javaObject Java Object
     */
    constructor(javaObject: JavaObject | JavaObjectWrapper) {
        super(javaObject);
        this.assertValidJavaObject('BlockStatePropertyBuilder');
    }

    /**
     * Create Block State Property Builder
     * @returns New Block State Property Builder
     */
    static create(): BlockStatePropertyBuilder {
        const obj = useBridge('BlockStatePropertyBuilder.create') as JavaObject;
        if (obj) {
            return new BlockStatePropertyBuilder(obj);
        } else {
            return null;
        }
    }

    /**
     * Add Integer Property
     * @param name Property Name
     * @param min Minimum Value
     * @param max Maximum Value
     * @param defaultValue Default Value
     */
    intProperty(name: string, min: number, max: number, defaultValue: number): BlockStatePropertyBuilder {
        useBridge('BlockStatePropertyBuilder.intProperty', this.getJavaObject(), name, min, max, defaultValue);
        return this;
    }

    /**
     * Add Boolean Property
     * @param name Property Name
     * @param defaultValue Default Value
     */
    booleanProperty(name: string, defaultValue: boolean): BlockStatePropertyBuilder {
        useBridge('BlockStatePropertyBuilder.booleanProperty', this.getJavaObject(), name, defaultValue);
        return this;
    }
}

type BlockStatePropertyType = string | number | boolean;

/**
 * Block State
 */
export class BlockState extends JavaObjectWrapper {
    /**
     * Create Block State Wrapper From Java Object
     * @param javaObject Java Object
     */
    constructor(javaObject: JavaObject | JavaObjectWrapper) {
        super(javaObject);
        this.assertValidJavaObject('BlockState');
    }

    /**
     * Get Block ID
     * @returns Block ID
     */
    getBlock(): Block {
        const obj = useBridge('BlockState.getBlock', this.getJavaObject()) as JavaObject;
        if (obj !== null) {
            return new Block(obj);
        } else {
            return null;
        }
    }

    /**
     * Get Custom Block
     * @returns Custom Block
     */
    getCustomBlock(): CustomBlock {
        const id = this.getBlock();
        return BlockRegistry.INSTANCE.get(id.getID());
    }

    /**
     * Get Block State Property
     * @param property Property Name
     * @returns Value
     */
    get(property: string): BlockStatePropertyType {
        return useBridge('BlockState.get', this.getJavaObject(), property) as BlockStatePropertyType;
    }

    /**
     * Get New Block State With Property Set To Value
     * @param property Property Name
     * @param value Value
     * @returns New Block State
     */
    with(property: string, value: BlockStatePropertyType): BlockState {
        const obj = useBridge('BlockState.with', this.getJavaObject(), property, value) as JavaObject;
        if (obj !== null) {
            return new BlockState(obj);
        } else {
            return null;
        }
    }

    /**
     * Get All Block State Properties
     * @returns All Block State Properties
     */
    properties(): string[] {
        return useBridge('BlockState.properties', this.getJavaObject()) as string[];
    }

    /**
     * Convert To String
     * @returns String
     */
    toString(): string {
        const start = this.getBlock().getID().toString();
        const properties = this.properties();
        const parts: string[] = [];
        for (const property of properties) {
            parts.push(property + ' = ' + this.get(property).toString());
        }
        return start + '[' + parts.join(', ') + ']';
    }
}

/**
 * Block Entity
 */
export class BlockEntity extends JavaObjectWrapper {
    /**
     * Create Block Entity Wrapper From Java Object
     * @param javaObject Java Object
     */
    constructor(javaObject: JavaObject | JavaObjectWrapper) {
        super(javaObject);
        this.assertValidJavaObject('BlockEntity');
    }

    /**
     * Get Block Entity ID
     * @returns ID
     */
    getID(): Identifier {
        const obj = useBridge('BlockEntity.getID', this.getJavaObject()) as string;
        if (obj !== null) {
            return new Identifier(obj);
        } else {
            return null;
        }
    }

    /**
     * Get Block Entity Inventory
     * @returns Inventory If Block Entity Has One, Otherwise NULL
     */
    getInventory(): Inventory {
        const obj = useBridge('BlockEntity.getInventory', this.getJavaObject()) as JavaObject;
        if (obj !== null) {
            return new Inventory(obj);
        } else {
            return null;
        }
    }

    /**
     * Mark Dirty
     */
    markDirty(): void {
        useBridge('BlockEntity.markDirty', this.getJavaObject());
    }
}

/**
 * {@link CustomBlock} With {@link CustomBlockEntity}
 */
export class CustomBlockWithEntity extends CustomBlock {
    /**
     * Create Custom Block Entity
     * @returns Custom Block Entity
     */
    createBlockEntity(): CustomBlockEntity {
        throw new Error('CustomBlockWithEntity.createBlockEntity is not implemented');
    }
}

class BlockRegistry implements SimpleRegistry<CustomBlock> {
    static INSTANCE = new BlockRegistry();

    readonly #blocks: Map<string, CustomBlock>;

    readonly #blockEntities: CustomBlockEntity[];

    private constructor() {
        this.#blocks = new Map<string, CustomBlock>();
        this.#blockEntities = [];
    }

    register(id: Identifier, obj: CustomBlock): void {
        this.#blocks.set(id.toString(), obj);
        useBridge(obj instanceof CustomBlockWithEntity ? 'Registry.registerBlockWithEntity' : 'Registry.registerBlock', id.toString(), obj.getSettings().createJavaObject(), obj.getPropertyBuilder().getJavaObject());
    }

    get(id: Identifier): CustomBlock {
        return this.#blocks.get(id.toString());
    }

    getID(obj: CustomBlock): Identifier {
        for (const block of this.#blocks) {
            if (block[1] === obj) {
                return new Identifier(block[0]);
            }
        }
        return null;
    }

    getCustomBlockEntityByID(id: number): CustomBlockEntity {
        return this.#blockEntities[id];
    }

    createCustomBlockEntity(id: Identifier, i: number): void {
        const block = this.get(id) as CustomBlockWithEntity;
        this.#blockEntities[i] = block.createBlockEntity();
    }

    freeCustomBlockEntity(i: number): void {
        delete this.#blockEntities[i];
    }
}

Registry.BLOCK = BlockRegistry.INSTANCE;

addBridge('CustomBlockEntity.create', (id: string, i: number) => {
    BlockRegistry.INSTANCE.createCustomBlockEntity(new Identifier(id), i);
});

addBridge('CustomBlockEntity.fromTag', (i: number, tag: JavaObject) => {
    BlockRegistry.INSTANCE.getCustomBlockEntityByID(i).fromTag(new CompoundTag(tag));
});

addBridge('CustomBlockEntity.toTag', (i: number, tag: JavaObject): JavaObject => {
    return BlockRegistry.INSTANCE.getCustomBlockEntityByID(i).toTag(new CompoundTag(tag)).getJavaObject();
});

addBridge('CustomBlockEntity.tick', (i: number) => {
    BlockRegistry.INSTANCE.getCustomBlockEntityByID(i).tick();
});

addBridge('CustomBlockEntity.setLocation', (i: number, world: JavaObject, x: number, y: number, z: number) => {
    BlockRegistry.INSTANCE.getCustomBlockEntityByID(i).setLocation(new World(world), new Pos(x, y, z));
});

addBridge('CustomBlockEntity.free', (i: number) => {
    BlockRegistry.INSTANCE.freeCustomBlockEntity(i);
});

addBridge('CustomBlock.onUse', (id: string, world: JavaObject, state: JavaObject, x: number, y: number, z: number, side: keyof typeof Direction, player: JavaObject, hand: keyof typeof Hand): string => {
    return BlockRegistry.INSTANCE.get(new Identifier(id)).onUse(new World(world), new BlockState(state), new Pos(x, y, z), Direction[side], new PlayerEntity(player), Hand[hand]);
});

/**
 * @internal
 */
export class BlockBuiltinRegistry implements SimpleBuiltinRegistry<Block> {
    static readonly INSTANCE = new BlockBuiltinRegistry();

    private constructor() {
    }

    get(id: Identifier): Block {
        const obj = useBridge('BuiltinRegistry.getBlock', id.toString()) as JavaObject;
        if (obj !== null) {
            return new Block(obj);
        } else {
            return null;
        }
    }
}