import {
  CommandInteraction, 
  CommandInteractionOptionResolver,
  TextChannel, 
  SlashCommandBuilder,
  SlashCommandStringOption,
  PermissionFlagsBits,
} from 'discord.js';
import {Command} from '../../classes/command';
import {logger} from '../../logger'
import {getContest, updateProblem} from '../../functions/database';

function isTextChannel(data: unknown): data is TextChannel{
  return (data as TextChannel).name !== undefined;
}

type CIOR = CommandInteractionOptionResolver;

class Wa extends Command{
  get name(){return "wa";}
  get description(){return "Add timestamp when you get wa";}
  async execute(interaction: CommandInteraction): Promise<void>{
    if(!isTextChannel(interaction.channel)){
      await interaction.reply({
        content: `Channel name doesn't exist!`
      });
      logger.error(`Channel name doesn't exist`);
      return;
    }
    try{
      // parse
      const user = interaction.user;
      let problemId = (interaction.options as CIOR).getString('problem');
      const contestName = interaction.channel.name;
      const channelId = interaction.channel.id;
      const contest = await getContest(channelId);
      const time = new Date();
      if(problemId === null){
        logger.error('option error');
        return;
      }
      problemId = problemId.toUpperCase();
      if(contest === null){
        await interaction.reply({
          content: `The contest in this channel didn't start!`
        });
        logger.error(`Contest ${contestName} didn't start`);
        return;
      }
      // update
      await updateProblem(user, problemId, channelId, 'wa', time.valueOf());
      await interaction.reply({
        content: `Problem ${problemId} has wa-ed.`
      });
      logger.log(`Problem ${problemId} has wa-ed.`);
    }catch(error: unknown){
      logger.error(`Error occur while wa-ing problem`);
      return;
    }
  }
  override build(): SlashCommandBuilder | 
    Omit<SlashCommandBuilder, "addSubcommand" | "addSubcommandGroup">{
    return new SlashCommandBuilder()
      .setName(this.name)
      .setDescription(this.description)
      .addStringOption((option: SlashCommandStringOption) =>
        option
          .setName('problem')
          .setDescription('The id of the problem.')
          .setMinLength(1).setMaxLength(1)
          .setRequired(true))
      .setDefaultMemberPermissions(PermissionFlagsBits.SendMessages);
  }
};

export const command = new Wa();