import { SlashCommandBuilder, PermissionFlagsBits } from 'discord.js';
import { MessageFlags } from 'discord-api-types/v10';
import { CODES } from '../_src/ansiColors.js';

/**
 * Combined ANSI utilities module
 *  - /ansi: preview nested [tag]…[/] ANSI coloring
 *  - /ansitheme: display full BG×FG theme chart
 * Both commands are Admin-only.
 */
export const commands = [
  // Preview arbitrary ANSI tags
  {
    data: new SlashCommandBuilder()
      .setName('ansi')
      .setDescription('Preview an ANSI-colored code block')
      .setDefaultMemberPermissions(PermissionFlagsBits.Administrator)
      .setDMPermission(false)
      .addStringOption(opt =>
        opt
          .setName('text')
          .setDescription('Use [red]…[/], [bold,blue]…[/], escape \\[/]')
          .setRequired(true)
      )
      .addBooleanOption(opt =>
        opt
          .setName('ephemeral')
          .setDescription('Reply ephemerally?')
          .setRequired(false)
      ),
    async execute(interaction, client) {
      const raw = interaction.options.getString('text', true);
      const ephemeral = interaction.options.getBoolean('ephemeral') ?? true;
      const colored = client.ansi`${raw}`;
      const block = client.wrapAnsi(colored);
      const opts = { content: block };
      if (ephemeral) opts.flags = MessageFlags.Ephemeral;
      await interaction.reply(opts);
    }
  },

  // Show complete ANSI theme chart
  {
    data: new SlashCommandBuilder()
      .setName('ansitheme')
      .setDescription('Show ANSI color theme chart')
      .setDefaultMemberPermissions(PermissionFlagsBits.Administrator)
      .setDMPermission(false)
      .addBooleanOption(opt =>
        opt
          .setName('ephemeral')
          .setDescription('Reply ephemerally?')
          .setRequired(false)
      ),
    async execute(interaction, client) {
      const fgs = ['gray', 'red', 'green', 'yellow', 'blue', 'pink', 'cyan', 'white'];
      const bgs = ['bgGray', 'bgOrange', 'bgBlue', 'bgTurquoise', 'bgFirefly', 'bgIndigo', 'bgLightGray', 'bgWhite'];
      const pad = 8;
      // Column header with padded labels (no colors) - shifted right by 1
      const header = ' ' + fgs.map(f => f.padEnd(pad, ' ')).join('');
      // Sample row with no background (padded cells)
      let defaultRow = '';
      for (const fg of fgs) {
        const fgCode = CODES[fg];
        const openNormal = `\u001b[${fgCode}m`;
        const openBold   = `\u001b[${fgCode};${CODES.bold}m`;
        const openUnder  = `\u001b[${fgCode};${CODES.underline}m`;
        const cell = `${openNormal}sa\u001b[0m${openBold}mp\u001b[0m${openUnder}le\u001b[0m`;
        defaultRow += ' ' + cell + ' ';
      }
      // Append default row label after one pad
      defaultRow += 'default';
      // Colored rows per background
      const rows = [];
      for (const bg of bgs) {
        let row = '';
        const bgCode = CODES[bg];
        for (const fg of fgs) {
          const fgCode = CODES[fg];
          const openNormal = `\u001b[${bgCode};${fgCode}m`;
          const openBold   = `\u001b[${bgCode};${fgCode};${CODES.bold}m`;
          const openUnder  = `\u001b[${bgCode};${fgCode};${CODES.underline}m`;
          const cell = `${openNormal}sa\u001b[0m${openBold}mp\u001b[0m${openUnder}le\u001b[0m`;
          row += ' ' + cell + ' ';
        }
        // Append uncolored row label immediately after cell padding
        row += bg;
        rows.push(row);
      }
      // Determine ephemeral setting
      const ephemeral = interaction.options.getBoolean('ephemeral') ?? true;
      // Initial sample table (header + default row)
      const sampleContent = [header, defaultRow].join('\n');
      const optsSample = { content: client.wrapAnsi(sampleContent) };
      if (ephemeral) optsSample.flags = MessageFlags.Ephemeral;
      await interaction.reply(optsSample);
      // Split colored rows into two tables
      const half = Math.ceil(rows.length / 2);
      const firstRows = rows.slice(0, half);
      const secondRows = rows.slice(half);
      // First colored table
      const table1 = [header, ...firstRows].join('\n');
      const opts1 = { content: client.wrapAnsi(table1) };
      if (ephemeral) opts1.flags = MessageFlags.Ephemeral;
      await interaction.followUp(opts1);
      // Second colored table
      if (secondRows.length > 0) {
        const table2 = [header, ...secondRows].join('\n');
        const opts2 = { content: client.wrapAnsi(table2) };
        if (ephemeral) opts2.flags = MessageFlags.Ephemeral;
        await interaction.followUp(opts2);
      }
    }
  }
];

export async function init(client) {
  client.logger.info('[module:ansi] Loaded ANSI utilities');
}