import { getGuild } from "@/database/queries";
import {
	ApplicationCommandType,
	type Attachment,
	type Client,
	ContextMenuCommandBuilder,
	type GuildTextBasedChannel,
	type MessageContextMenuCommandInteraction,
} from "discord.js";

const commandData = new ContextMenuCommandBuilder()
	.setName("Highlight Clip")
	.setType(ApplicationCommandType.Message);

function extractVideoLinks(message: { content: string }): string[] {
	const domains = [
		"youtube.com",
		"youtu.be",
		"medal.tv",
		"cdn.discordapp.com",
		"twitch.tv",
		"clips.twitch.tv",
	];

	const tokens = message.content.split(/\s+/);
	const found = new Set<string>();

	for (const raw of tokens) {
		let t = raw
			.replace(/^<+/, "")
			.replace(/>+$/, "")
			.replace(/^[('"`]+/, "")
			.replace(/['")`.,;:!]+$/, "");
		if (!t) continue;

		const lower = t.toLowerCase();
		if (!domains.some((d) => lower.includes(d))) continue;

		if (!/^[a-zA-Z][a-zA-Z\d+\-.]*:\/\//.test(t)) {
			t = `https://${t}`;
		}

		try {
			const url = new URL(t);
			if (!domains.some((d) => url.hostname.toLowerCase().includes(d)))
				continue;

			const normalized = url.href.replace(/\/$/, "");
			found.add(normalized);
		} catch {}
	}

	return Array.from(found);
}

function isVideoAttachment(attachment: Attachment): boolean {
	return (
		typeof attachment.contentType === "string" &&
		attachment.contentType.startsWith("video/")
	);
}

async function execute(
	client: Client,
	interaction: MessageContextMenuCommandInteraction,
) {
	if (!interaction.guild) {
		await interaction.reply({
			content: "❌ This command can only be used in a server.",
			ephemeral: true,
		});
		return;
	}

	await interaction.deferReply({ flags: ["Ephemeral"] });
	const { data: guildConfig, exists } = await getGuild(interaction.guild.id);
	if (!exists) {
		await interaction.editReply({
			content: "❌ No guild configuration found.",
		});
		return;
	}

	if (!guildConfig.highlights_channel_id) {
		await interaction.editReply({
			content:
				"❌ No highlights channel configured. Use `/config highlight-channel`.",
		});
		return;
	}

	const targetMessage = interaction.targetMessage;
	if (!targetMessage) {
		await interaction.editReply({
			content: "❌ Couldn't find the target message.",
		});
		return;
	}

	const videoAttachments = targetMessage.attachments.filter(isVideoAttachment);
	const videoLinks = extractVideoLinks(targetMessage);

	if (videoAttachments.size === 0 && videoLinks.length === 0) {
		await interaction.editReply({
			content:
				"❌ No video attachments or supported links found in this message.",
		});
		return;
	}

	let highlightsChannel: GuildTextBasedChannel | null = null;
	try {
		highlightsChannel = (await client.channels.fetch(
			guildConfig.highlights_channel_id,
		)) as GuildTextBasedChannel | null;
	} catch (e) {
		await interaction.editReply({
			content: "❌ Could not access the highlights channel.",
		});
		return;
	}

	if (!highlightsChannel) {
		await interaction.editReply({
			content: "❌ Highlights channel not found.",
		});
		return;
	}

	const files = Array.from(videoAttachments.values()).map((a) => a.url);
	const author = `<@${targetMessage.author.id}>`;
	const jumpUrl = targetMessage.url;

	if (videoLinks.length === 0) videoLinks.push(...files);

	const videoLinksText = videoLinks
		.map((link) => `• [Video Link](${link})`)
		.join(" ");
	const description = `:star: New highlight from ${author}!\n-# [Jump to message](${jumpUrl}) ${videoLinksText}`;

	try {
		const msg = await highlightsChannel.send({
			content: description,
			allowedMentions: { users: [targetMessage.author.id] },
		});

		await msg.react("⭐");
		await interaction.editReply({
			content: "✅ Highlight sent!",
		});
	} catch (error) {
		await interaction.editReply({
			content: "❌ Failed to send highlight.",
		});
	}
}

export default {
	data: commandData,
	execute,
};