import {computed, MaybeRef, isRef} from "vue";
import {extractPluginElements, type Plugin} from "../utils/plugins";

/**
 * Composable to compute plugin element counts and groupings.
 * Provides reactive computed values for elements by type and total count.
 * @param plugin - The plugin to analyze.
 * @returns Object with elementsByType (computed) and total (computed) counts.
 */
export function usePluginElementCounts(plugin: MaybeRef<Plugin | undefined>) {
    const elementsByType = computed(() => {
        const pluginValue = isRef(plugin) ? plugin.value : plugin
        return pluginValue ? extractPluginElements(pluginValue) : {};
    });

    const total = computed(() => Object.values(elementsByType.value).reduce((sum, arr) => sum + arr.length, 0));

    return {elementsByType, total} as const;
}