import { parseCert } from '@ghaiklor/x509';
import { Message } from 'eris';
import { readdirSync } from 'fs';
import moment from 'moment';
import { Client } from '..';
import { Command, RichEmbed } from '../class';
import { parseCertificate, Certificate } from '../functions';

export default class Parseall extends Command {
  constructor(client: Client) {
    super(client);

    this.name = 'parseall';
    this.description = 'Displays certificate validation for all accounts';
    this.usage = `${this.client.config.prefix}parseall`;
    this.permissions = { roles: ['446104438969466890'] };
    this.aliases = ['checkcerts', 'verifyall', 'verifycerts'];
  }

  public async run(message: Message, args: string[]) {
    try {
      const embed = new RichEmbed();
      embed.setTitle('Certificate Validation');
      embed.setAuthor(this.client.user.username, this.client.user.avatarURL);
      embed.setFooter(`Requested by ${message.member.username}#${message.member.discriminator}`, message.member.avatarURL);
      embed.setTimestamp();
      const search = await this.client.db.Account.find();

      const files = search.map((acc) => {
        let certfile: string;
        try { certfile = readdirSync(`${acc.homepath}/Validation`)[0] } catch (error) { if (error.message.includes('no such file or directory') || error.message.includes('File doesn\'t exist.')) certfile = 'not_found.crt' } // eslint-disable-line
        this.client.signale.note('Cert directory set:');
        this.client.signale.note(`${acc.homepath}/Validation/${certfile}`);
        return `${acc.homepath}/Validation/${certfile}`;
      });

      // @ts-ignore
      const parsed: ({ status: 'fulfilled', value: Certificate } | { status: 'rejected', reason: Error })[] = await Promise.allSettled(files.map((c) => parseCertificate(this.client, c)));
      this.client.signale.note('Promise settled:');
      this.client.signale.note(parsed);

      const final = search.map(async (a) => {
        const result = await parsed[search.findIndex((acc) => acc === a)];
        if (result.status === 'rejected') {
          this.client.signale.info(result.reason);
          if (result.reason.message.includes('no such file or directory') || result.reason.message.includes('File doesn\'t exist.')) return `${this.client.stores.emojis.error} **${a.username}** Unable to locate certificate`;
          if (result.reason.message.includes('panic: Certificate PEM Encode == nil')) return `${this.client.stores.emojis.error} **${a.username}** Invalid certificate`;
          throw result.reason;
        }
        const { notAfter } = result.value;
        this.client.signale.info(notAfter);
        // @ts-ignore
        const timeObject: {years: number, months: number, days: number, hours: number, minutes: number, seconds: number, firstDateWasLater: boolean} = moment.preciseDiff(new Date(), notAfter, true);
        const precise: [number, string][] = [];
        // @ts-ignore
        const timeArray: number[] = Object.values(timeObject).filter((v) => typeof v === 'number');
          timeArray.forEach((t) => { // eslint-disable-line
          const index = timeArray.indexOf(t);
          const measurements = ['yr', 'mo', 'd', 'h', 'm', 's'];
          precise.push([t, measurements[index]]);
        });
        const time = precise.filter((n) => n[0]).map(((v) => v.join(''))).join(', ');

        if (notAfter < new Date()) return `${this.client.stores.emojis.error} **${a.username}** Expired ${time} ago`;
        return `${this.client.stores.emojis.success} **${a.username}** Expires in ${time}`;
      });

      if (final.join('\n').length < 2048) embed.setDescription(final.join('\n'));
      else {
        const split = this.client.util.splitString(final.join('\n'), 1024);
        split.forEach((s) => embed.addField('\u200B', s));
      }

      // @ts-ignore
      return await message.channel.createMessage({ embed });
    } catch (error) {
      return this.client.util.handleError(error, message, this);
    }
  }
}