import { createEvents } from "ics";
import { calendar } from "../entity/club/calendar";
import moment from "moment";
import { CLUB_NAME, CLUB_WEBSITE, MAIL_USERNAME } from "../env.defaults";

export abstract class CalendarHelper {
  public static buildICS(entries: Array<calendar>): { error?: Error; value?: string } {
    return createEvents(
      entries.map((i) => ({
        calName: process.env.CLUB_NAME,
        uid: i.id,
        sequence: i.sequence,
        ...(i.allDay
          ? {
              start: moment(i.starttime)
                .format("YYYY-M-D")
                .split("-")
                .map((a) => parseInt(a)) as [number, number, number],
              end: moment(i.endtime)
                .format("YYYY-M-D")
                .split("-")
                .map((a) => parseInt(a)) as [number, number, number],
            }
          : {
              start: moment(i.starttime)
                .format("YYYY-M-D-H-m")
                .split("-")
                .map((a) => parseInt(a)) as [number, number, number, number, number],
              end: moment(i.endtime)
                .format("YYYY-M-D-H-m")
                .split("-")
                .map((a) => parseInt(a)) as [number, number, number, number, number],
            }),
        title: i.title,
        description: i.content,
        location: i.location,
        categories: [i.type.type],
        organizer: { name: CLUB_NAME, email: MAIL_USERNAME },
        created: moment(i.createdAt)
          .format("YYYY-M-D-H-m")
          .split("-")
          .map((a) => parseInt(a)) as [number, number, number, number, number],
        lastModified: moment(i.updatedAt)
          .format("YYYY-M-D-H-m")
          .split("-")
          .map((a) => parseInt(a)) as [number, number, number, number, number],
        transp: "OPAQUE" as "OPAQUE",
        status: "CONFIRMED",
        ...(CLUB_WEBSITE != "" ? { url: CLUB_WEBSITE } : {}),
        alarms: [
          {
            action: "display",
            summary: "Erinnerung",
            trigger: {
              minutes: 30,
              before: true,
            },
          },
        ],
      }))
    );
  }
}