class farallonDate {
    readonly selector: string;
    timeFormat: any = {
        second: "second ago",
        seconds: "seconds ago",
        minute: "minute ago",
        minutes: "minutes ago",
        hour: "hour ago",
        hours: "hours ago",
        day: "day ago",
        days: "days ago",
        week: "week ago",
        weeks: "weeks ago",
        month: "month ago",
        months: "months ago",
        year: "year ago",
        years: "years ago",
    };
    doms: Array<any> = [];
    constructor(config: any) {
        this.selector = config.selector;
        if (config.timeFormat) {
            this.timeFormat = config.timeFormat;
        }
        this.init();
        setTimeout(() => {
            this.refresh();
        }, 1000 * 5);
    }

    init() {
        this.doms = Array.from(document.querySelectorAll(this.selector));
        this.doms.forEach((dom: any) => {
            dom.innerText = this.humanize_time_ago(
                dom.attributes["datetime"].value
            );
        });
    }

    humanize_time_ago(datetime: string) {
        const time = new Date(datetime);
        const between: number =
            Date.now() / 1000 - Number(time.getTime() / 1000);
        if (between < 3600) {
            return `${Math.ceil(between / 60)} ${
                Math.ceil(between / 60) == 1
                    ? this.timeFormat.second
                    : this.timeFormat.seconds
            }`;
        } else if (between < 86400) {
            return `${Math.ceil(between / 3600)} ${
                Math.ceil(between / 3660) == 1
                    ? this.timeFormat.hour
                    : this.timeFormat.hours
            }`;
        } else if (between < 86400 * 30) {
            return `${Math.ceil(between / 86400)} ${
                Math.ceil(between / 86400) == 1
                    ? this.timeFormat.day
                    : this.timeFormat.days
            }`;
        } else if (between < 86400 * 30 * 12) {
            return `${Math.ceil(between / (86400 * 30))} ${
                Math.ceil(between / (86400 * 30)) == 1
                    ? this.timeFormat.month
                    : this.timeFormat.months
            }`;
        } else {
            return (
                time.getFullYear() +
                "-" +
                (time.getMonth() + 1) +
                "-" +
                time.getDate()
            );
        }
    }

    refresh() {
        this.doms.forEach((dom: any) => {
            dom.innerText = this.humanize_time_ago(
                dom.attributes["datetime"].value
            );
        });
    }
}

export default farallonDate;