import moment, { unitOfTime } from 'moment';
import { nanoid } from 'nanoid';
import { Message, TextChannel } from 'eris';
import { Client, Command, RichEmbed } from '../class';

export default class Judgement_Add extends Command {
  constructor(client: Client) {
    super(client);
    this.name = 'add';
    this.description = 'Creates a judgement.';
    this.usage = `${this.client.config.prefix}judgement add <member> <severity: 0 LOW, 1 MEDIUM, 2 HIGH> <time: 0 for indefinite> <description>`;
    this.permissions = 5;
    this.guildOnly = true;
    this.enabled = true;
  }

  public async run(message: Message, args: string[]) {
    try {
      if (!args[0]) return this.client.commands.get('help').run(message, ['judgement', 'add']);
      if (args.length < 4) return this.client.commands.get('help').run(message, ['judgement', 'add']);

      const member = this.client.util.resolveMember(args[0], this.mainGuild);
      if (!member) return this.error(message.channel, 'Unable to locate member.');
      const staff = await this.client.db.mongo.Staff.findOne({ userID: message.author.id }).lean().exec();
      if (!staff) return this.error(message.channel, 'Unable to locate Staff information.');

      if (Number.isNaN(Number(args[1]))) return this.error(message.channel, 'Severity must be a number.');
      if (Number(args[1]) < 0 || Number(args[1]) > 2) return this.error(message.channel, 'Severity must be greater than -1 and less than 3.');


      let momentMilliseconds: number;
      const now: number = Date.now();
      let date: Date;
      if (args[2] !== '0') {
        const lockLength = args[2].match(/[a-z]+|[^a-z]+/gi);
        const length = Number(lockLength[0]);
        const unit = lockLength[1] as unitOfTime.Base;
        momentMilliseconds = moment.duration(length, unit).asMilliseconds();
        date = new Date(momentMilliseconds + now);
      }

      const jid = nanoid(11);

      const entry = new this.client.db.mongo.Judgement({
        jid,
        userID: member.user.id,
        enteredBy: message.author.id,
        severity: Number(args[1]),
        date: new Date(),
        expires: date ?? undefined,
        description: args.slice(3).join(' '),
      });
      await entry.save();

      let severity: string;
      switch (Number(args[1])) {
        case 0:
          severity = 'LOW';
          break;
        case 1:
          severity = 'MEDIUM';
          break;
        case 2:
          severity = 'HIGH';
          break;
        default:
          break;
      }

      const log = <TextChannel> this.client.guilds.get(this.client.config.guildID).channels.get('611584771356622849');
      const embed = new RichEmbed();
      embed.setTitle('Judgement - Creation');
      embed.setDescription(entry.description);
      embed.addField('Member', `${member.username}#${member.discriminator} (<@${member.id}>)`, true);
      embed.addField('Entered by', `${message.author.username}, ${staff.pn.slice(0, 2).join(', ')}`, true);
      embed.addField('Severity', severity, true);
      embed.setFooter(this.client.user.username, this.client.user.avatarURL);
      embed.setTimestamp();
      if (date) {
        embed.addField('Expires on', date.toLocaleString('en-us'), true);
      } else {
        embed.addField('Expires on', 'INDEFINITE', true);
      }
      log.createMessage({ embed });

      return this.success(message.channel, `Judgement \`${jid}\` successfully recorded.`);
    } catch (err) {
      return this.client.util.handleError(err, message, this);
    }
  }
}