import { basename } from "pathe";
import { getIcons } from "@iconify/utils";
import { hash } from "ohash";
import { createError, getQuery } from "h3";
import { consola } from "consola";
import { useAppConfig, getRequestURL, defineCachedEventHandler } from "#imports";
import { collections } from "#nuxt-icon-server-bundle";
const warnOnceSet = /* @__PURE__ */ new Set();
const DEFAULT_ENDPOINT = "https://api.iconify.design";
export default defineCachedEventHandler(async (event) => {
  const url = getRequestURL(event);
  if (!url)
    return createError({ status: 400, message: "Invalid icon request" });
  const options = useAppConfig().icon;
  const collectionName = event.context.params?.collection?.replace(/\.json$/, "");
  const collection = collectionName ? await collections[collectionName]?.() : null;
  const apiEndPoint = options.iconifyApiEndpoint || DEFAULT_ENDPOINT;
  const icons = url.searchParams.get("icons")?.split(",");
  if (collection) {
    if (icons?.length) {
      const data = getIcons(
        collection,
        icons
      );
      consola.debug(`[Icon] serving ${(icons || []).map((i) => "`" + collectionName + ":" + i + "`").join(",")} from bundled collection`);
      return data;
    }
  } else if (import.meta.dev) {
    if (collectionName && !warnOnceSet.has(collectionName) && apiEndPoint === DEFAULT_ENDPOINT) {
      consola.warn([
        `[Icon] Collection \`${collectionName}\` is not found locally`,
        `We suggest to install it via \`npm i -D @iconify-json/${collectionName}\` to provide the best end-user experience.`
      ].join("\n"));
      warnOnceSet.add(collectionName);
    }
  }
  if (options.fallbackToApi === true || options.fallbackToApi === "server-only") {
    const apiUrl = new URL("./" + basename(url.pathname) + url.search, apiEndPoint);
    consola.debug(`[Icon] fetching ${(icons || []).map((i) => "`" + collectionName + ":" + i + "`").join(",")} from iconify api`);
    if (apiUrl.host !== new URL(apiEndPoint).host) {
      return createError({ status: 400, message: "Invalid icon request" });
    }
    try {
      const data = await $fetch(apiUrl.href);
      return data;
    } catch (e) {
      consola.error(e);
      if (e.status === 404)
        return createError({ status: 404 });
      else
        return createError({ status: 500, message: "Failed to fetch fallback icon" });
    }
  }
  return createError({ status: 404 });
}, {
  group: "nuxt",
  name: "icon",
  getKey(event) {
    const collection = event.context.params?.collection?.replace(/\.json$/, "") || "unknown";
    const icons = String(getQuery(event).icons || "");
    return `${collection}_${icons.split(",")[0]}_${icons.length}_${hash(icons)}`;
  },
  swr: true,
  maxAge: 60 * 60 * 24 * 7
  // 1 week
});