import {
  ActionRowBuilder,
  ButtonBuilder,
  ButtonStyle,
  ChatInputCommandInteraction,
  EmbedBuilder,
  PermissionFlagsBits,
  SlashCommandBuilder
} from 'discord.js';
import { SlashCommand } from '../../utils/types';
import { context } from '../../config/context';

const STATUS_LABELS: Record<string, string> = { open: 'Offen', in_progress: 'In Bearbeitung', done: 'Erledigt' };

export function buildTaskCard(task: { id: string; title: string; description: string | null; status: string; assigneeId: string | null; createdByTag: string }) {
  const embed = new EmbedBuilder()
    .setTitle(task.title)
    .setDescription(task.description || 'Keine Beschreibung')
    .setColor(0xf97316)
    .addFields(
      { name: 'Status', value: STATUS_LABELS[task.status] || task.status, inline: true },
      { name: 'Zugewiesen an', value: task.assigneeId ? `<@${task.assigneeId}>` : 'Niemand', inline: true },
      { name: 'Erstellt von', value: task.createdByTag, inline: true }
    );
  const row = new ActionRowBuilder<ButtonBuilder>().addComponents(
    new ButtonBuilder().setCustomId(`task:status:${task.id}:open`).setLabel('Offen').setStyle(task.status === 'open' ? ButtonStyle.Primary : ButtonStyle.Secondary),
    new ButtonBuilder().setCustomId(`task:status:${task.id}:in_progress`).setLabel('In Bearbeitung').setStyle(task.status === 'in_progress' ? ButtonStyle.Primary : ButtonStyle.Secondary),
    new ButtonBuilder().setCustomId(`task:status:${task.id}:done`).setLabel('Erledigt').setStyle(task.status === 'done' ? ButtonStyle.Success : ButtonStyle.Secondary)
  );
  return { embeds: [embed], components: [row] };
}

const command: SlashCommand = {
  guildOnly: true,
  data: new SlashCommandBuilder()
    .setName('task')
    .setDescription('Verwaltet Team-Aufgaben.')
    .addSubcommand((sub) =>
      sub
        .setName('create')
        .setDescription('Erstellt eine neue Team-Aufgabe.')
        .addStringOption((opt) => opt.setName('title').setDescription('Titel der Aufgabe').setRequired(true))
        .addStringOption((opt) => opt.setName('description').setDescription('Beschreibung'))
        .addUserOption((opt) => opt.setName('assignee').setDescription('Zuständige Person'))
    )
    .setDefaultMemberPermissions(PermissionFlagsBits.ManageMessages),
  async execute(interaction: ChatInputCommandInteraction) {
    if (!interaction.guildId) return;
    const title = interaction.options.getString('title', true);
    const description = interaction.options.getString('description') ?? undefined;
    const assignee = interaction.options.getUser('assignee');

    const task = await context.tasks.createTask({
      guildId: interaction.guildId,
      title,
      description,
      assigneeId: assignee?.id,
      createdBy: interaction.user.id,
      createdByTag: interaction.user.tag
    });

    await interaction.reply(buildTaskCard(task));
  }
};

export default command;