import { upsertActor } from "@stealth-developers/db";
import { Guild, GuildMember, PermissionsBitField, User } from "discord.js";

import type { AnyUser } from "@/types";

/** adds or updates a user in the database, also adds or updates the guild actor */
export async function upsertUser(input: AnyUser, guild: Guild) {
	let discordId: string;
	let username: string;
	let displayName: string | null = null;
	let avatar: string | null = null;
	let isModerator = false;

	if ("user" in input) {
		const member = input;
		const user = member.user;
		discordId = user.id;
		username = user.username;

		const nick = member instanceof GuildMember ? member.nickname : member.nick;
		const globalName = user instanceof User ? user.globalName : user.global_name;
		displayName = nick || globalName || user.username;
		avatar = member.avatar || user.avatar;

		if (member instanceof GuildMember) {
			isModerator = member.permissions.has(PermissionsBitField.Flags.ModerateMembers);
		} else if (member.permissions) {
			const perms = new PermissionsBitField(BigInt(member.permissions));
			isModerator = perms.has(PermissionsBitField.Flags.ModerateMembers);
		}
	} else {
		const user = input;
		discordId = user.id;
		username = user.username;
		displayName = user.displayName;
		avatar = user.avatar;

		const cachedMember = guild.members.cache.get(user.id);
		if (cachedMember) {
			isModerator = cachedMember.permissions.has(PermissionsBitField.Flags.ModerateMembers);
		} else {
			try {
				const member = await guild.members.fetch(user.id);
				isModerator = member.permissions.has(PermissionsBitField.Flags.ModerateMembers);
			} catch {}
		}
	}

	return upsertActor({
		guild: {
			discordId: guild.id,
			name: guild.name,
			icon: guild.iconURL() || guild.icon,
		},
		user: {
			discordId,
			username,
			displayName,
			avatar,
		},
		moderator: isModerator,
	});
}