import "dotenv/config";
import {Bot, RichText, Post} from "@skyware/bot";
import {DidResolver} from "@atproto/identity";

var didres = new DidResolver({});
var getServiceEndpoint = async did => (await didres.resolve(did)).service.find(s => s.id == "#atproto_pds")?.serviceEndpoint;

var bot = new Bot();
await bot.login({
	identifier: process.env.IDENTIFIER,
	password: process.env.PASSWORD
});
bot.on("error", console.error);

bot.on("mention", async post => {
	try {
		// video in mentioning post or quoted post
		var vid = await findVideoInPost(post);

		// ignore original posts without video
		if (!vid && !post.replyRef) return;

		// video in replied post or quoted in replied post
		if (!vid) {
			var parentPost = await bot.getPost(post.replyRef.parent.uri);
			vid = await findVideoInPost(parentPost);
		}

		// video in original post or quoted in original post
		if (!vid) {
			var rootPost = await bot.getPost(post.replyRef.root.uri);
			vid = await findVideoInPost(rootPost);
		}
		
		if (!vid) {
			await post.reply({text: "Could not find Bluesky video in replied post, quoted post, or parent post"});
			return;
		}
		
		var url = `${await getServiceEndpoint(vid.did)}/xrpc/com.atproto.sync.getBlob?did=${vid.did}&cid=${vid.cid}`;
		url = `https://avps.owo69.me/download.html?filename=${vid.cid}.mp4&url=${encodeURIComponent(url)}`;

		var text = new RichText().addLink("Click or touch here to download this video", url);
		await post.reply({text});
	} catch (error) {
		console.error(error);
		await post.reply({text: String(error.message?.substring(0,300))});
	}
});

async function findVideoInPost(post, b) {
	if (!post.embed) return;

	if (post.embed.isVideo())
		return {did: post.author.did, cid: post.embed.cid};

	if (post.embed.isRecordWithMedia() && post.embed.media.isVideo())
		return {did: post.author.did, cid: post.embed.media.cid};

	if (post.embed.isRecord() && post.embed.record instanceof Post && !b) {
		// post.embed.record.embed is undefined
		let quotedPost = await bot.getPost(post.embed.record.uri);
		return await findVideoInPost(quotedPost, true);
	}
}