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/** * Copyright (c) Crew Dev. * * This source code is licensed under the MIT license found in the * LICENSE file in the root directory of this source tree. */
import type { Fn } from "./types.ts";
/** * match multiple cases */export function Match<T extends any>(data: T) {  const cases: Array<{ condition: T | any; action?: Fn }> = [];  let once = true;
  return {    case(condition: T, action: Fn) {      cases.push({ condition, action });      return this;    },    default(action?: Fn) {      if (once) {        cases.push({ condition: "DEFAULT", action });        once = false;      }
      return {        Value() {          const value = cases            .map(({ action, condition }) => {              if (condition === data) {                return action?.();              }            })            .filter((val) => val);
          const none = cases.filter(({ condition }) => condition === "DEFAULT");
          return value.length            ? value.shift()            : none.shift()?.action?.() ?? null;        },      };    },  };}
/** * resolve main download file */export async function getMainFile(name: string, version?: string) {  // * filter a array promises  async function filter<T extends any>(    arr: Array<T>,    callback: (item: T) => Promise<boolean>,  ) {    const fail = Symbol();
    return (      await Promise.all(        arr.map(async (item) => ((await callback(item)) ? item : fail)),      )    ).filter((item) => item !== fail);  }
  const files = [    "mod.ts",    "mod.js",    "index.js",    "index.ts",    "%name%.js",    "%name%.ts",    "dist/index.esm.js",    "dist/index.esm.min.js",    "dist/%name%.esm.js",    "dist/%name%.esm.min.js",    "dist/mod.ts",    "dist/mod.js",    "dist/index.js",    "dist/%name%.js",    "dist/%name%.min.js",    "lib/index.ts",    "lib/index.js",    "lib/%name%.ts",    "lib/%name%.js",    "deno/index.ts",    "deno/index.js",  ].map(async (target) => {    const file = target.includes("%name%")      ? target.replace("%name%", name?.trim())      : target;
    const response = await fetch(      `https://deno.land/x/${name}${version ? `@${version}` : ""}/${file}`,    );
    const { ok, status } = response;
    return {      file,      ok,      status,    };  });
  return (    await filter(      files,      async (file) => (await file).ok && (await file).status < 300,    )  ).shift();}