import {singleton} from "../common/Singleton";
import {GameEnv} from "../cfg/GameEnv";

let delayRun = function (max: number, min?: number) {
    min = min || 0;
    let milliseconds = (Math.random() * (max - min) + min) * 1000 | 0;
    return new Promise(resolve => setTimeout(resolve, milliseconds));
}
const baseCfg = singleton(GameEnv);

/**
 * 根据配置项延迟执行的修饰器
 * @param type GameEnv中的字段名
 */
export function wait(type: string) {
    return (target: any,
            propertyKey: string,
            descriptor: PropertyDescriptor) => {
        const method = descriptor.value;
        descriptor.value = function (...args: any[]) {
            // @ts-ignore
            let time = baseCfg[type] as number;
            const minDelay = baseCfg.robotActTimeMin;
            const maxDelay = baseCfg.robotActTimeMax;
            let maxTime = maxDelay / 100 * time;
            let minTime = minDelay / 100 * time;
            delayRun(maxTime, minTime)
                .then(() => {
                })
                .finally(() => {
                    return method!.apply(this, args);
                })

        };
    }
}

/**
 * 根据参数延迟执行的修饰器
 * @param num  最大延迟n秒
 */
export function delay(num: number) {
    return (target: any,
            propertyKey: string,
            descriptor: PropertyDescriptor) => {
        const method = descriptor.value;
        descriptor.value = function (...args: any[]) {
            delayRun(num, 0)
                .then(() => {
                    return method!.apply(this, args);
                })
                .catch(err => {
                    return method!.apply(this, args);
                })

        };
    }
}