// characterLoader.js - Loads character spritesheets from server and registers them
import { registerCharacter } from './sprites.js';

/**
 * Fetch character data from the server and register all characters
 * with the sprite system so NPCs can use them.
 * @returns {Promise<number>} number of characters loaded
 */
export async function loadCharacters() {
    try {
        const res = await fetch('/api/characters');
        const data = await res.json();
        if (!data.characters) return 0;

        const entries = Object.entries(data.characters);
        const promises = entries.map(([id, c]) =>
            registerCharacter(id, c.name, c.spritesheet, c.frameW, c.frameH)
        );
        await Promise.all(promises);
        console.log(`[characterLoader] loaded ${entries.length} character(s)`);
        return entries.length;
    } catch (e) {
        console.warn('[characterLoader] failed to load characters:', e);
        return 0;
    }
}