import { loadProfile, saveProfile } from '$lib/db.js';
import { getUserId } from '$lib/crypto.js';
import type { Tag, UserProfile } from '$lib/types.js';

let profile = $state<UserProfile | null>(null);
let loading = $state(true);

export function getProfile() {
	return {
		get current() { return profile; },
		get loading() { return loading; }
	};
}

export async function initProfile(): Promise<UserProfile> {
	loading = true;
	const existing = await loadProfile();
	if (existing) {
		profile = existing;
		loading = false;
		return existing;
	}

	const userId = await getUserId();
	const newProfile: UserProfile = {
		id: userId,
		name: '',
		bio: '',
		tags: [],
		updatedAt: Date.now(),
		signature: ''
	};

	await saveProfile(newProfile);
	profile = newProfile;
	loading = false;
	return newProfile;
}

export async function updateProfile(updates: Partial<Pick<UserProfile, 'name' | 'bio' | 'tags'>>): Promise<void> {
	if (!profile) return;

	profile = {
		...profile,
		...updates,
		updatedAt: Date.now()
	};

	await saveProfile(profile);
}

export async function addTag(tag: Tag): Promise<void> {
	if (!profile) return;
	const tags = [...profile.tags, tag];
	await updateProfile({ tags });
}

export async function removeTag(index: number): Promise<void> {
	if (!profile) return;
	const tags = profile.tags.filter((_, i) => i !== index);
	await updateProfile({ tags });
}