import * as Acct from "@/misc/acct.js";
import { Cache } from "@/misc/cache.js";
import { getWordHardMute } from "@/misc/check-word-mute.js";
import { getFullApAccount } from "@/misc/convert-host.js";
import type { Packed } from "@/misc/schema.js";
import type { Antenna } from "@/models/entities/antenna.js";
import type { Note } from "@/models/entities/note.js";
import type { User } from "@/models/entities/user.js";
import { Blockings, UserProfiles } from "@/models/index.js";

const blockingCache = new Cache<User["id"][]>("blocking", 60 * 5);
const mutedWordsCache = new Cache<string[][] | undefined>("mutedWords", 60 * 5);

export async function checkHitAntenna(
	antenna: Antenna,
	note: Note | Packed<"Note">,
	noteUser: { id: User["id"]; username: string; host: string | null },
): Promise<boolean> {
	if (note.visibility === "specified") return false;
	if (note.visibility === "home") return false;
	if (!antenna.withReplies && note.replyId != null) return false;
	if (antenna.withFile) {
		if (note.fileIds && note.fileIds.length === 0) return false;
	}

	if (antenna.src === "users") {
		const accts = antenna.users.map((x) => {
			const { username, host } = Acct.parse(x);
			return getFullApAccount(username, host).toLowerCase();
		});
		if (
			!accts.includes(
				getFullApAccount(noteUser.username, noteUser.host).toLowerCase(),
			)
		)
			return false;
	} else if (antenna.src === "instances") {
		const instances = antenna.instances
			.filter((x) => x !== "")
			.map((host) => {
				return host.toLowerCase();
			});
		if (!instances.includes(noteUser.host?.toLowerCase() ?? "")) return false;
	}

	const keywords = antenna.keywords
		// Clean up
		.map((xs) => xs.filter((x) => x !== ""))
		.filter((xs) => xs.length > 0);

	if (keywords.length > 0) {
		if (note.text == null) return false;

		const matched = keywords.some((and) =>
			and.every((keyword) =>
				antenna.caseSensitive
					? note.text!.includes(keyword)
					: note.text!.toLowerCase().includes(keyword.toLowerCase()),
			),
		);

		if (!matched) return false;
	}

	const excludeKeywords = antenna.excludeKeywords
		// Clean up
		.map((xs) => xs.filter((x) => x !== ""))
		.filter((xs) => xs.length > 0);

	if (excludeKeywords.length > 0) {
		if (note.text == null) return false;

		const matched = excludeKeywords.some((and) =>
			and.every((keyword) =>
				antenna.caseSensitive
					? note.text!.includes(keyword)
					: note.text!.toLowerCase().includes(keyword.toLowerCase()),
			),
		);

		if (matched) return false;
	}

	// アンテナ作成者がノート作成者にブロックされていたらスキップ
	const blockings = await blockingCache.fetch(noteUser.id, () =>
		Blockings.findBy({ blockerId: noteUser.id }).then((res) =>
			res.map((x) => x.blockeeId),
		),
	);
	if (blockings.includes(antenna.userId)) return false;

	const mutedWords = await mutedWordsCache.fetch(antenna.userId, () =>
		UserProfiles.findOneBy({ userId: antenna.userId }).then(
			(profile) => profile?.mutedWords,
		),
	);
	if (await getWordHardMute(note, antenna.userId, mutedWords)) return false;

	// TODO: eval expression

	return true;
}
