import { parseText } from "../utility/_Text.js";
import { isAdmin, isModerator } from "../utility/_UAC.js";
import { ACTIVE_MESSAGES, MAX_MESSAGE_ID_LENGTH } from "./chat.js";

export async function run({ core, server, socket, payload }) {
  // undefined | "overwrite" | "append" | "prepend"
  let mode = payload.mode;

  if (!mode) {
    mode = 'overwrite';
  }

  if (mode !== 'overwrite' && mode !== 'append' && mode !== 'prepend') {
    return server.police.frisk(socket.address, 13);
  }

  const customId = payload.customId;

  if (!customId || typeof customId !== "string" || customId.length > MAX_MESSAGE_ID_LENGTH) {
    return server.police.frisk(socket.address, 13);
  }

  let text = payload.text;

  if (typeof (text) !== 'string') {
    return server.police.frisk(socket.address, 13);
  }

  if (mode === 'overwrite') {
    text = parseText(text);

    if (text === '') {
      text = '\u0000';
    }
  }

  if (!text) {
    return server.police.frisk(socket.address, 13);
  }

  // TODO: What score should we use for this? It isn't as space filling as chat messages.
  // But we also don't want a massive growing message.
  // Or flashing between huge and small. Etc.

  let message;
  for (let i = 0; i < ACTIVE_MESSAGES.length; i++) {
    const msg = ACTIVE_MESSAGES[i];

    if (msg.userid === socket.userid && msg.customId === customId) {
      message = ACTIVE_MESSAGES[i];
      break;
    }
  }

  if (!message) {
    return server.police.frisk(socket.address, 6);
  }

  const outgoingPayload = {
    cmd: 'updateMessage',
    userid: socket.userid,
    channel: socket.channel,
    level: socket.level,
    mode,
    text,
    customId: message.customId,
  };

  if (isAdmin(socket.level)) {
    outgoingPayload.admin = true;
  } else if (isModerator(socket.level)) {
    outgoingPayload.mod = true;
  }

  server.broadcast(outgoingPayload, { channel: socket.channel });

  return true;
}

export const requiredData = ['text', 'customId'];

/**
  * Module meta information
  * @public
  * @typedef {Object} updateMessage/info
  * @property {string} name - Module command name
  * @property {string} category - Module category name
  * @property {string} description - Information about module
  * @property {string} usage - Information about module usage
  */
export const info = {
  name: 'updateMessage',
  category: 'core',
  description: 'Update a message you have sent.',
  usage: `
    API: { cmd: 'updateMessage', mode: 'overwrite'|'append'|'prepend', text: '<text to apply>', customId: '<customId sent with the chat message>' }`,
};