import moment, { unitOfTime } from 'moment';
import { nanoid } from 'nanoid';
import { TextChannel } from 'eris';
import { Client, CmdContext, 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(ctx: CmdContext) {
    if (!ctx.args[0]) return this.client.commands.get('help').run(new CmdContext(ctx.message, [this.name]));
    if (ctx.args.length < 4) return this.client.commands.get('help').run(new CmdContext(ctx.message, [this.name]));

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

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


    let momentMilliseconds: number;
    const now: number = Date.now();
    let date: Date;
    if (ctx.args[2] !== '0') {
      const lockLength = ctx.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: ctx.message.author.id,
      severity: Number(ctx.args[1]),
      date: new Date(),
      expires: date ?? undefined,
      description: ctx.args.slice(3).join(' '),
    });
    await entry.save();

    let severity: string;
    switch (Number(ctx.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} (<@${member.id}>)`, true);
    embed.addField('Entered by', `${ctx.message.author.username}${staff?.isManager ? ' [k]' : ''}`, 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(ctx.message.channel, `Judgement \`${jid}\` successfully recorded.`);
  }
}