import * as PIXI from 'pixi.js';
import * as TWEEDLE from 'tweedle.js';
import {
    DEVICE_TYPE,
    DEVICE_Z_INDEX,
} from './constants';

import shelf from '/map/shelf.svg';
import charge from '/map/charge.svg';
import station from '/map/station.svg';
import direction from '/map/direction.svg';

let app, mapContainer, themeMode;
let selectedSprite, effectTick, effectHalfCircle, effectRectangle;

export function getApp() {
    return app;
}

export function setApp(param) {
    app = param;
}

export function getMapContainer() {
    return mapContainer;
}

export function setMapContainer(param) {
    mapContainer = param;
}

export function getThemeMode() {
    return themeMode;
}

export function setThemeMode(param) {
    themeMode = param;
}


export const getRealPosition = (x, y) => {
    const rect = app.view.getBoundingClientRect();
    return {
        mapX: (x - rect.left) / mapContainer.scale.x - mapContainer.x / mapContainer.scale.x,
        mapY: (y - rect.top) / mapContainer.scale.y - mapContainer.y / mapContainer.scale.y
    }
}

export const generateSprite = (deviceType) => {
    let sprite;
    switch (deviceType) {
        case DEVICE_TYPE.SHELF:
            sprite = new PIXI.Sprite(PIXI.Texture.from(shelf, { resourceOptions: { scale: 1 } }));
            // sprite.width = 50;
            // sprite.height = 50;
            sprite.zIndex = DEVICE_Z_INDEX.SHELF;
            break;
        case DEVICE_TYPE.CHARGE:
            sprite = new PIXI.Sprite(PIXI.Texture.from(charge, { resourceOptions: { scale: 1 } }));
            // sprite.width = 60;
            // sprite.height = 60;
            sprite.zIndex = DEVICE_Z_INDEX.CHARGE;
            break;
        case DEVICE_TYPE.STATION:
            sprite = new PIXI.Sprite(PIXI.Texture.from(station, { resourceOptions: { scale: 1 } }));
            // sprite.width = 112;
            // sprite.height = 63;
            sprite.zIndex = DEVICE_Z_INDEX.STATION;
            break;
        case DEVICE_TYPE.DIRECTION:
            sprite = new PIXI.Sprite(PIXI.Texture.from(direction, { resourceOptions: { scale: 1 } }));
            // sprite.width = 112;
            // sprite.height = 63;
            sprite.zIndex = DEVICE_Z_INDEX.DIRECTION;
            break;
        default:
            break;
    }
    return sprite;
}

export const initSprite = (sprite, type) => {
    sprite.anchor.set(0.5);
    sprite.cursor = 'pointer';
    sprite.eventMode = 'static';
    sprite.data = {
        type: type,
        uuid: generateID()
    };
}

export const markSprite = (sprite) => {
    sprite.alpha = 0.5;
}

export const unMarkSprite = (sprite) => {
    sprite.alpha = 1;
}

export const beMovable = (sprite) => {
    sprite.off('pointerup');
    sprite.off('pointermove');
    sprite.off('pointerdown');
    sprite.off('click');

    sprite.on("pointerdown", onDragStart);

    let dragTarget;
    function onDragStart(event) {
        if (event.button === 0) {
            dragTarget = event.currentTarget;
            mapContainer.parent.off('pointermove');
            mapContainer.parent.on('pointermove', onDragMove, dragTarget);

            mapContainer.parent.off('pointerup');
            mapContainer.parent.on('pointerup', onDragEnd.bind(mapContainer));
        }
    }

    function onDragMove(event) {
        if (this) {
            this.parent.toLocal(event.global, null, this.position);
        }
    }

    function onDragEnd() {
        if (dragTarget) {
            this.parent.off('pointermove');
            this.parent.off('pointerup');
            dragTarget.alpha = 1;
            dragTarget = null;
        }
    }

}

export const spriteListBeMovable = (selectedSprites, endFn) => {
    if (selectedSprites && selectedSprites.length > 0) {
        let batchMove = false;
        let batchMoveStartPos = null;

        const batchMoving = (event) => {
            const scale = mapContainer.scale.x;
            if (batchMove && batchMoveStartPos) {
                // offset move val
                var mouseMovement = {
                    x: (event.global.x - batchMoveStartPos.x) / scale,
                    y: (event.global.y - batchMoveStartPos.y) / scale
                };
                for (let sprite of selectedSprites) {
                    sprite.position.x = sprite.batchMoveStartPos.x + mouseMovement.x;
                    sprite.position.y = sprite.batchMoveStartPos.y + mouseMovement.y;
                }
            }
        }

        const batchMoveEnd = (event) => {
            batchMove = false;
            batchMoveStartPos = null;
            selectedSprites.forEach(child => {
                unMarkSprite(child);
            })
            selectedSprites = [];
            mapContainer.parent.off('mousedown');
            mapContainer.parent.off('mousemove');
            mapContainer.parent.off('mouseup');

            if (endFn) {
                endFn();
            }
        }

        const batchMoveStart = (event) => {
            batchMoveStartPos = { x: event.data.global.clone().x, y: event.data.global.clone().y };
            selectedSprites.forEach(child => {
                child.batchMoveStartPos = { x: child.position.x, y: child.position.y };
            })

            batchMove = true;
            mapContainer.parent.off('mousemove');
            mapContainer.parent.on('mousemove', batchMoving);

            mapContainer.parent.off('mouseup');
            mapContainer.parent.on('mouseup', batchMoveEnd);
        }

        mapContainer.parent.off('mousedown')
        mapContainer.parent.on('mousedown', batchMoveStart);
    }
}

export const isSpriteInSelectionBox = (sprite, selectionBox) => {
    const spriteBounds = sprite.getBounds();
    const boxBounds = selectionBox.getBounds();

    return spriteBounds.x + spriteBounds.width > boxBounds.x
        && spriteBounds.x < boxBounds.x + boxBounds.width
        && spriteBounds.y + spriteBounds.height > boxBounds.y
        && spriteBounds.y < boxBounds.y + boxBounds.height;
}

export const beSettings = (sprite, setSpriteSettings) => {
    sprite.off('pointerup');
    sprite.off('pointermove');
    sprite.off('pointerdown');
    sprite.off('click');

    sprite.on("click", onClick);

    function onClick(event) {
        setSpriteSettings(sprite);
    }
}

export const clearMapData = () => {
    if (!mapContainer) {
        return;
    }
    let childList = [];
    mapContainer.children.forEach(child => {
        if (child.data?.uuid) {
            childList.push(child);
        }
    })
    if (childList.length > 0) {
        childList.forEach(child => {
            mapContainer.removeChild(child);
            child.destroy({ children: true, texture: false, baseTexture: false });
        })
        childList.forEach((child, index) => {
            childList[index] = null;
        });
        childList = [];
    }
}


export const showSelectedEffect = (sprite) => {
    if (!sprite?.texture || !sprite?.texture?.valid) {
        return;
    }
    const { width, height } = sprite;
    const scale = sprite.scale.x;
    const sideLen = (Math.max(width, height) + 10) * scale;
    const color = themeMode === 'light' ? 0x273c75 : 0xffffff;

    effectHalfCircle = new PIXI.Graphics();
    effectHalfCircle.beginFill(color);
    effectHalfCircle.lineStyle(2 * scale, color);
    effectHalfCircle.arc(0, 0, sideLen, 0, Math.PI);
    effectHalfCircle.endFill();
    effectHalfCircle.position.set(sprite.x, sprite.y);
    effectHalfCircle.scale.set(1 / scale);
    effectHalfCircle.zIndex = 9999;

    effectRectangle = new PIXI.Graphics();
    effectRectangle.lineStyle(5 * scale, color, 1);
    effectRectangle.drawRoundedRect(0, 0, sideLen, sideLen, 16 * scale);
    effectRectangle.endFill();
    effectRectangle.mask = effectHalfCircle;
    effectRectangle.zIndex = 9999;

    const scaledWidth = sideLen * (1 / scale);
    const scaledHeight = sideLen * (1 / scale);

    effectRectangle.scale.set(1 / scale);
    effectRectangle.position.set(sprite.x - scaledWidth / 2, sprite.y - scaledHeight / 2);

    mapContainer.addChild(effectRectangle);
    mapContainer.addChild(effectHalfCircle);

    selectedSprite = sprite;

    let phase = 0;
    effectTick = (delta) => {
        phase += delta / 10;
        phase %= (Math.PI * 2);
        if (effectHalfCircle) {
            effectHalfCircle.rotation = phase;
        }
    };

    app.ticker.add(effectTick);
}

export const removeSelectedEffect = () => {
    if (effectTick) {
        app.ticker.remove(effectTick);
    }
    if (effectHalfCircle) {
        mapContainer.removeChild(effectHalfCircle);
        effectHalfCircle = null;
    }
    if (effectRectangle) {
        mapContainer.removeChild(effectRectangle);
        effectRectangle = null;
    }
    selectedSprite = null;
}

export const updateEffect = (sprite) => {
    if (!sprite || sprite !== selectedSprite || !effectRectangle || !effectHalfCircle) {
        return
    }
    const { width, height } = sprite;
    const scale = sprite?.scale.x;
    const sideLen = (Math.max(width, height) + 10) * scale;
    const scaledWidth = sideLen * (1 / scale);
    const scaledHeight = sideLen * (1 / scale);

    effectRectangle.position.set(sprite.x - scaledWidth / 2, sprite.y - scaledHeight / 2);

    effectHalfCircle.position.set(sprite.x, sprite.y);
}

export const generateID = () => {
    return Date.now().toString(36) + Math.random().toString(36).substring(2);
}

export const patchRaLayout = (param) => {
    const parentElement = document.getElementById('main-content');
    if (parentElement && parentElement.classList.contains('RaLayout-content')) {
        parentElement.style.paddingLeft = param;
        parentElement.style.paddingRight = param;
    }
}