//import en from "javascript-time-ago/locale/en";

import moment from "moment-timezone";
import { dlog } from "./dlog";

export namespace dtime {
  export function getCurrentDate() {
    return new Date().toISOString();
  }

  export function getDataFromString(str: string) {
    new Date(str);
  }

  export function getFormattedDate(str: string) {
    try {
      let d = new Date(str);
      return d.toLocaleString();
    } catch (e) {
      return "Invalid";
    }
  }

  // as both are ios - just check the substring
  export function isSameDay(day1: string, day2: string) {
    return day1.substring(0, 10) == day2.substring(0, 10);
  }

  export function fromNow(str: string) {
    return moment(str).fromNow();
  }

  export function addDay(offset: any, error = "Invalid date"): Date {
    let date = new Date(new Date().getTime() + parseInt(offset) * 24 * 60 * 60 * 1000);
    if (date.toString() == "Invalid Date") {
      throw new Error(error);
    }
    return date;
  }
  export function throwIfPastDate(date: Date, error = "You provided a past data") {
    if (new Date().getTime() > date.getTime()) {
      throw new Error(error);
    }
  }
  export function getDateOnlyFromISO(str: string): string {
    try {
      let d = new Date(str);
      return d.toLocaleDateString();
    } catch (e) {
      return "Unknown Date";
    }
  }
  export function getTimeOnlyFromISO(str: string): string {
    try {
      let d = new Date(str);
      return d.toLocaleTimeString();
    } catch (e) {
      return "Unknown Time";
    }
  }
  const intervals = [
    { label: "year", seconds: 31536000 },
    { label: "month", seconds: 2592000 },
    { label: "day", seconds: 86400 },
    { label: "hour", seconds: 3600 },
    { label: "minute", seconds: 60 },
    { label: "second", seconds: 1 },
  ];

  export function getAgoString(dateISOString: string) {
    try {
      let date = new Date(dateISOString);
      const seconds = Math.floor((Date.now() - date.getTime()) / 1000);
      const interval = intervals.find((i) => i.seconds < seconds);
      const count = Math.floor(seconds / interval!!.seconds);
      return `${count} ${interval!!.label}${count !== 1 ? "s" : ""} ago`;
    } catch (e) {
      dlog.ex(e as Error);
      return "";
    }
  }

  // this must return a number in second
  export function getEpocFromTime(iso: string): number {
    return parseInt(new Date(iso).getTime() / 1000 + "");
  }

  export function getIstDateTime(iso: string): string {
    let tm = moment(iso).tz("Asia/Kolkata");
    return tm.format("YYYY-MM-DD HH:mm:ss");
  }
  export function getIstDate(iso: string): string {
    let tm = moment(iso).tz("Asia/Kolkata");
    return tm.format("YYYY-MM-DD");
  }
  export function getIstTime(iso: string): string {
    let tm = moment(iso).tz("Asia/Kolkata");
    return tm.format("HH:mm:ss");
  }
}

// test