import { Element } from "./Element.js";
import { Quality } from "./utils.js";
import { Size } from "./Cone.js";
import { Spade } from "./Spade.js";

export class TypeEntity {
    static other = 0;
    static player = 1;
    static ennemy = 2;
}

export class Env {
    constructor() {
        this.scene = new THREE.Scene();
        this.camera = new THREE.PerspectiveCamera(
            75,
            window.innerWidth / window.innerHeight,
            1,
            1000
        );

        this.camera.position.z = 7;

        this.renderer = new THREE.WebGLRenderer();
        this.renderer.setSize(window.innerWidth, window.innerHeight);

        // Change the default quality of the rendered scene
        this.setQuality(Quality.medium);

        // Store all elements in the env
        this.elements = [];

        // Setup renderer for lights
        this.renderer.shadowMap.enabled = true;
        this.renderer.shadowMap.type = THREE.PCFSoftShadowMap;

        // Add light source
        const light = new THREE.DirectionalLight(THREE.Color.NAMES.white);
        // On top : 1, right : 2 and between player (0) and camera (7) : 4
        light.position.set(2, 1, 4);
        light.castShadow = true;
        this.scene.add(light);

        // Clock
        this.clock = new THREE.Clock();
    }

    /**
     * Get the Canvas element
     * @returns domElement
     */
    getDomElement = () => this.renderer.domElement;

    /**
     * Get current scene
     * @returns Scene
     */
    getScene = () => this.scene;

    /**
     * Get used camera
     * @returns Camera
     */
    getCamera = () => this.camera;

    /**
     * Get current renderer
     * @returns Render
     */
    getRenderer = () => this.renderer;

    /**
     * Change the quality of the render
     * @param {Quality} quality
     * @returns
     */
    setQuality = (quality) => {
        this.quality = quality;

        this.renderer.setSize(
            window.innerWidth / quality,
            window.innerHeight / quality,
            false
        );
    };

    /**
     * Add an element to the scene
     * @param {Element} element Element
     * @param {TypeEntity} type Type of the element added
     */
    addToScene = (element, type) => {
        if (!type) {
            type = TypeEntity.other;
        }

        this.elements.push([element, type]);
        this.scene.add(element.data);
    };

    /**
     * Animate all the entities in the environnement
     * @param {boolean} demo
     */
    animate = (demo) => {
        let playerDead = false;

        // Retrieve ennemies
        const ennemies = this.elements
            .filter((entityData) => entityData[1] == TypeEntity.ennemy)
            .map((ennemyData) => ennemyData[0]);

        // Player animation
        this.elements
            .filter((entityData) => entityData[1] == TypeEntity.player)
            .map((playerData) => playerData[0])
            .forEach((player) => {
                if (player.animation) {
                    if (
                        !player.animation(
                            ennemies.map((object) => object.data),
                            demo
                        )
                    ) {
                        // If animation returned false, the player died!
                        playerDead = true;
                    }
                }
            });

        // Enemy animation
        ennemies.forEach((ennemy) => {
            ennemy.data.position.x -= 0.05;
            if (ennemy.data.position.x <= -10) {
                ennemy.data.position.x = ennemy.startPos + Math.random() * 20;
            }
        });

        return playerDead;
    };

    /**
     * Render the current scene, using the camera
     * @returns
     */
    render = () => this.renderer.render(this.scene, this.camera);

    /**
     * Update the game logic
     * @param {boolean} demo
     */
    update = (demo) => {
        if (this.animate(demo)) {
            return true;
        }
        this.render();

        return false;
    };

    /**
     * Generate a random map of ennemies
     * @param {number} numberOfEnnemies
     */
    generateRandomMap = (numberOfEnnemies) => {
        // Distance before the first ennemy hit the player
        const startDelta = 5;
        // Simple Spade
        for (let index = 1; index < numberOfEnnemies + 1; index++) {
            const spade = new Spade(
                Math.random() * 0xffffff,
                Math.round(Math.random()) ? Size.little : Size.big,
                startDelta + (index - 1) * 10
            );

            this.addToScene(spade, TypeEntity.ennemy);
        }
    };
}