import Component from '@glimmer/component';
import type Poll from 'croodle/models/poll';
import { DateTime } from 'luxon';

export interface PollEvaluationParticipantsTableSignature {
  Args: {
    poll: Poll;
    timeZone: string | undefined;
  };
}

export default class PollEvaluationParticipantsTable extends Component<PollEvaluationParticipantsTableSignature> {
  get optionsPerDay() {
    const { poll } = this.args;

    const optionsPerDay: Map<string, number> = new Map();
    for (const option of poll.options) {
      if (!option.day) {
        throw new Error(
          `Excepts all options to have a valid ISO8601 date string when using optionsPerDay getter`,
        );
      }

      optionsPerDay.set(
        option.day,
        optionsPerDay.has(option.day)
          ? (optionsPerDay.get(option.day) as number) + 1
          : 0,
      );
    }

    return new Map(
      Array.from(optionsPerDay.entries()).map(([dayString, count]) => [
        DateTime.fromISO(dayString).toJSDate(),
        count,
      ]),
    );
  }

  get usersSorted() {
    const { poll } = this.args;
    return Array.from(poll.users).sort((a, b) =>
      a.creationDate > b.creationDate ? 1 : -1,
    );
  }
}

declare module '@glint/environment-ember-loose/registry' {
  export default interface Registry {
    PollEvaluationParticipantsTable: typeof PollEvaluationParticipantsTable;
  }
}