interface ActivityPopupAnimationState {
    x: number;
    y: number;
    scaleX: number;
    scaleY: number;
    opacity: number;
    mask: cc.Node;
    maskOpacity: number;
}

const ANIMATION_STATE_KEY = "__activityPopupAnimationState";

export enum ActivityPopupAnimationType {
    "左侧滑入" = 0,
    "Q弹弹出" = 1
}

/**
 * Common enter/exit animation for activity popups.
 * Only the content panel slides and scales; the full-screen mask fades separately.
 */
export default class ActivityPopupAnimator {
    public static open(
        content: cc.Node,
        mask?: cc.Node,
        animationType: ActivityPopupAnimationType = ActivityPopupAnimationType.左侧滑入,
        onComplete?: () => void
    ): void {
        if (!content || !cc.isValid(content, true)) {
            if (onComplete) onComplete();
            return;
        }

        const state = this.getState(content, mask);
        content.stopAllActions();
        content.active = true;
        this.openMask(mask, state.maskOpacity);

        if (animationType === ActivityPopupAnimationType.Q弹弹出) {
            this.openElastic(content, state, onComplete);
        } else {
            this.openFromLeft(content, state, onComplete);
        }
    }

    public static close(
        content: cc.Node,
        mask?: cc.Node,
        animationType: ActivityPopupAnimationType = ActivityPopupAnimationType.左侧滑入,
        onComplete?: () => void
    ): void {
        if (!content || !cc.isValid(content, true)) {
            if (onComplete) onComplete();
            return;
        }

        const state = this.getState(content, mask);
        content.stopAllActions();
        this.closeMask(mask);

        if (animationType === ActivityPopupAnimationType.Q弹弹出) {
            this.closeElastic(content, mask, state, onComplete);
        } else {
            this.closeToLeft(content, mask, state, onComplete);
        }
    }

    private static openFromLeft(
        content: cc.Node,
        state: ActivityPopupAnimationState,
        onComplete?: () => void
    ): void {
        const startX = state.x - this.getSlideDistance(content);
        content.setPosition(startX, state.y);
        content.scaleX = state.scaleX * 0.72;
        content.scaleY = state.scaleY * 0.72;
        content.opacity = 0;

        cc.tween(content)
            .to(0.24, {
                x: state.x,
                y: state.y,
                scaleX: state.scaleX * 0.94,
                scaleY: state.scaleY * 0.94,
                opacity: state.opacity
            }, { easing: "cubicOut" })
            .to(0.10, {
                scaleX: state.scaleX * 1.06,
                scaleY: state.scaleY * 1.06
            }, { easing: "backOut" })
            .to(0.12, {
                scaleX: state.scaleX,
                scaleY: state.scaleY
            }, { easing: "sineOut" })
            .call(() => {
                if (onComplete) onComplete();
            })
            .start();
    }

    private static openElastic(
        content: cc.Node,
        state: ActivityPopupAnimationState,
        onComplete?: () => void
    ): void {
        content.setPosition(state.x, state.y);
        content.scaleX = state.scaleX * 0.36;
        content.scaleY = state.scaleY * 0.36;
        content.opacity = 0;

        cc.tween(content)
            .to(0.18, {
                scaleX: state.scaleX * 1.12,
                scaleY: state.scaleY * 0.88,
                opacity: state.opacity
            }, { easing: "backOut" })
            .to(0.09, {
                scaleX: state.scaleX * 0.94,
                scaleY: state.scaleY * 1.08
            }, { easing: "sineOut" })
            .to(0.08, {
                scaleX: state.scaleX * 1.04,
                scaleY: state.scaleY * 0.97
            }, { easing: "sineInOut" })
            .to(0.08, {
                scaleX: state.scaleX,
                scaleY: state.scaleY
            }, { easing: "sineOut" })
            .call(() => {
                if (onComplete) onComplete();
            })
            .start();
    }

    private static closeToLeft(
        content: cc.Node,
        mask: cc.Node,
        state: ActivityPopupAnimationState,
        onComplete?: () => void
    ): void {
        const endX = state.x - this.getSlideDistance(content);
        cc.tween(content)
            .to(0.08, {
                scaleX: state.scaleX * 1.06,
                scaleY: state.scaleY * 1.06
            }, { easing: "sineOut" })
            .to(0.22, {
                x: endX,
                scaleX: state.scaleX * 0.72,
                scaleY: state.scaleY * 0.72,
                opacity: 0
            }, { easing: "cubicIn" })
            .call(() => this.finishClose(content, mask, state, onComplete))
            .start();
    }

    private static closeElastic(
        content: cc.Node,
        mask: cc.Node,
        state: ActivityPopupAnimationState,
        onComplete?: () => void
    ): void {
        cc.tween(content)
            .to(0.07, {
                scaleX: state.scaleX * 0.94,
                scaleY: state.scaleY * 1.06
            }, { easing: "sineOut" })
            .to(0.08, {
                scaleX: state.scaleX * 1.08,
                scaleY: state.scaleY * 0.90
            }, { easing: "sineInOut" })
            .to(0.15, {
                scaleX: state.scaleX * 0.36,
                scaleY: state.scaleY * 0.36,
                opacity: 0
            }, { easing: "backIn" })
            .call(() => this.finishClose(content, mask, state, onComplete))
            .start();
    }

    private static openMask(mask: cc.Node, opacity: number): void {
        if (!mask || !cc.isValid(mask, true)) return;
        mask.stopAllActions();
        mask.active = true;
        mask.opacity = 0;
        cc.tween(mask)
            .to(0.24, { opacity }, { easing: "sineOut" })
            .start();
    }

    private static closeMask(mask: cc.Node): void {
        if (!mask || !cc.isValid(mask, true)) return;
        mask.stopAllActions();
        cc.tween(mask)
            .to(0.30, { opacity: 0 }, { easing: "sineIn" })
            .start();
    }

    private static finishClose(
        content: cc.Node,
        mask: cc.Node,
        state: ActivityPopupAnimationState,
        onComplete?: () => void
    ): void {
        this.restore(content, state);
        content.active = false;
        if (mask && cc.isValid(mask, true)) {
            mask.stopAllActions();
            mask.opacity = 0;
            mask.active = false;
        }
        if (onComplete) onComplete();
    }

    private static getState(content: cc.Node, mask?: cc.Node): ActivityPopupAnimationState {
        let state = (content as any)[ANIMATION_STATE_KEY] as ActivityPopupAnimationState;
        if (!state) {
            state = {
                x: content.x,
                y: content.y,
                scaleX: content.scaleX,
                scaleY: content.scaleY,
                opacity: content.opacity,
                mask: mask || null,
                maskOpacity: mask ? mask.opacity : 0
            };
            (content as any)[ANIMATION_STATE_KEY] = state;
        } else if (mask && state.mask !== mask) {
            state.mask = mask;
            state.maskOpacity = mask.opacity;
        }
        return state;
    }

    private static getSlideDistance(content: cc.Node): number {
        const parentWidth = content.parent ? content.parent.width : 0;
        return Math.max(content.width, parentWidth * 0.92);
    }

    private static restore(content: cc.Node, state: ActivityPopupAnimationState): void {
        content.setPosition(state.x, state.y);
        content.scaleX = state.scaleX;
        content.scaleY = state.scaleY;
        content.opacity = state.opacity;
    }
}