import { Message } from "discord.js";
import { replyWithCleanup } from "../utilities";

export const handleReactCommand = async (message: Message) => {
  if (message.author.bot) return;

  if (!message.content.startsWith("uma!react")) return;

  const application = await message.client.application?.fetch();
  const ownerId = application?.owner?.id;

  if (message.author.id !== ownerId) return;

  const parameters = message.content.split(" ");

  if (parameters.length < 3) {
    await replyWithCleanup(
      message,
      "❌ Usage: `uma!react <message_id> <emoji>` or `uma!react <channel_id> <message_id> <emoji>`\nExamples:\n- `uma!react 1234567890123456789 👍` (current channel)\n- `uma!react #general 1234567890123456789 👍` (specific channel)\n- `uma!react 9876543210987654321 1234567890123456789 👍` (channel by ID)",
    );

    return;
  }

  let targetChannel: any;
  let messageId: string;
  let emoji: string;
  const channelMatch = parameters[1].match(/<#(\d+)>/);
  const channelIdMatch = parameters[1].match(/^\d{17,19}$/);

  if (channelMatch || channelIdMatch) {
    if (parameters.length < 4) {
      await replyWithCleanup(
        message,
        "❌ Usage: `uma!react <channel_id> <message_id> <emoji>`",
      );

      return;
    }

    const channelId = channelMatch ? channelMatch[1] : parameters[1];

    messageId = parameters[2];
    emoji = parameters[3];

    try {
      targetChannel = await message.client.channels.fetch(channelId);
    } catch {
      await replyWithCleanup(
        message,
        "❌ Channel not found or not accessible.",
      );

      return;
    }
  } else {
    targetChannel = message.channel;
    messageId = parameters[1];
    emoji = parameters[2];
  }

  if (!targetChannel || !targetChannel.isTextBased()) {
    await replyWithCleanup(message, "❌ Target channel is not a text channel.");

    return;
  }

  try {
    const targetMessage = await targetChannel.messages.fetch(messageId);

    if (!targetMessage) {
      await replyWithCleanup(message, "❌ Message not found.");

      return;
    }

    const existingReaction = targetMessage.reactions.cache.get(emoji);
    const botReacted = existingReaction?.users.cache.has(
      message.client.user?.id || "",
    );

    if (botReacted) {
      await targetMessage.reactions.cache
        .get(emoji)
        ?.users.remove(message.client.user?.id);
      await replyWithCleanup(
        message,
        `✅ Removed reaction ${emoji} from message in ${targetChannel}`,
      );
    } else {
      await targetMessage.react(emoji);
      await replyWithCleanup(
        message,
        `✅ Reacted with ${emoji} to message in ${targetChannel}`,
      );
    }
  } catch (error) {
    console.error("Error toggling reaction:", error);
    await replyWithCleanup(
      message,
      "❌ Failed to toggle reaction on the message.",
    );
  }
};