import { SlashCommandBuilder } from "discord.js";
import type { BotCommand } from "./index";
import { botConfig } from "@/bot/config";
import { createDiscordUser, SignupError, validateSignup } from "@/bot/services/signup";

const DM_ONLY_MESSAGE = "This command only works in direct messages.";

export const signupCommand: BotCommand = {
  builder: new SlashCommandBuilder()
    .setName("signup")
    .setDescription("Create a Polaris Task Force account linked to your Discord account")
    .addStringOption((option) =>
      option.setName("displayname").setDescription("Your in-game name").setRequired(true),
    )
    .addStringOption((option) =>
      option
        .setName("steamid")
        .setDescription("Your Steam64 ID (17-digit numeric)")
        .setRequired(true),
    ) as SlashCommandBuilder,
  execute: async (interaction, payload) => {
    if (interaction.inGuild()) {
      await interaction.reply({ content: DM_ONLY_MESSAGE, ephemeral: true });
      return;
    }

    const username = interaction.user.username;
    const discordId = interaction.user.id;
    const displayName = interaction.options.getString("displayname", true);
    const steamId = interaction.options.getString("steamid", true);

    try {
      await validateSignup(payload, { username, discordId, steamId, displayName });
    } catch (error) {
      if (error instanceof SignupError) {
        await interaction.reply({ content: error.message, ephemeral: true });
        return;
      }
      throw error;
    }

    const { user, tempPassword } = await createDiscordUser(payload, {
      username,
      discordId,
      displayName,
      steamId,
    });

    const passwordMessage = [
      "Your Polaris Task Force account has been created.",
      "",
      `Username: ${user.username}`,
      `Temporary password: ${tempPassword}`,
      "",
      `Log in at ${botConfig.appUrl} and change your password in Account settings.`,
    ].join("\n");
    await interaction.user.send(passwordMessage);

    await interaction.reply({
      content: `Account created for ${user.username}. Your temporary password was sent to this DM.`,
      ephemeral: true,
    });
  },
};