const {addCommand} = require("../lib/command");

function listChannels() {
  if (!comcord.state.currentGuild) {
    console.log("<not in a guild>");
    return;
  }

  let longest = 0;
  const guild = comcord.client.guilds.get(comcord.state.currentGuild);
  const channels = Array.from(guild.channels.values()).filter(
    (c) => c.type == 0 || c.type == 5
  );
  channels.sort((a, b) => a.position - b.position);

  for (const channel of channels) {
    const perms = channel.permissionsOf(comcord.client.user.id);
    const private = !perms.has("readMessageHistory");

    if (channel.name.length + (private ? 1 : 0) > longest)
      longest = Math.min(25, channel.name.length + (private ? 1 : 0));
  }

  console.log("");
  console.log("  " + "channel-name".padStart(longest, " ") + "  " + "topic");
  console.log("-".repeat(80));
  for (const channel of channels) {
    const topic =
      channel.topic != null ? channel.topic.replace(/\n/g, " ") : "";
    const perms = channel.permissionsOf(comcord.client.user.id);
    const private = !perms.has("viewChannel");

    const name = (private ? "*" : "") + channel.name;

    console.log(
      "  " +
        (name.length > 24 ? name.substring(0, 24) + "\u2026" : name).padStart(
          longest,
          " "
        ) +
        "  " +
        (topic.length > 80 - (longest + 5)
          ? topic.substring(0, 79 - (longest + 5)) + "\u2026"
          : topic)
    );
  }
  console.log("-".repeat(80));
  console.log("");
}

addCommand("l", "list channels", listChannels);

module.exports = {
  listChannels,
};