const { ccclass } = cc._decorator;

/** HomeScene 共用队列。显示中的活动及其奖励窗口关闭后才推进下一项。 */
@ccclass
export default class HomePopupQueue extends cc.Component {
    private tasks: Array<{ key: string; priority: number; run: (done: () => void) => void }> = [];
    private running = "";

    public static get(canvas: cc.Node): HomePopupQueue {
        return canvas.getComponent(HomePopupQueue) || canvas.addComponent(HomePopupQueue);
    }

    public enqueue(key: string, priority: number, run: (done: () => void) => void) {
        if (this.running === key || this.tasks.some(task => task.key === key)) return;
        this.tasks.push({ key, priority, run });
        this.tasks.sort((a, b) => a.priority - b.priority);
    }

    update() {
        if (this.running || !this.tasks.length || this.hasVisiblePopup()) return;
        const task = this.tasks.shift();
        this.running = task.key;
        let finished = false;
        const done = () => {
            if (finished) return;
            finished = true;
            this.running = "";
        };
        try { task.run(done); }
        catch (error) { done(); cc.error("[HomePopupQueue] " + task.key, error); }
    }

    private hasVisiblePopup(): boolean {
        const visible = (node: cc.Node) => node && cc.isValid(node, true) && node.activeInHierarchy;
        // JiaZai hides this node when the home-entry transition animation completes.
        if (visible(this.node.getChildByName("zhuanchang"))) return true;
        if (visible(this.node.getChildByName("Transfer"))) return true;
        if (visible(this.node.getChildByName("CloudRisePanel"))) return true;
        const seven = this.node.getChildByName("sevenDayGift");
        if (seven && seven.children.some(visible)) return true;
        const home: any = this.node.getComponent("JiaZai");
        if (!home) return false;
        if (home.passContentLoading) return true;
        return ["RewardNode", "getcard", "monthlyCardNode", "actionpNode", "winStreakNode", "passCheckNode", "passIntroNode", "jungleTreasureNode"]
            .some(key => visible(home[key]));
    }

    onDestroy() { this.tasks.length = 0; this.running = ""; }
}