import nodeResolve from "@rollup/plugin-node-resolve";
import commonjs from "@rollup/plugin-commonjs";

const localImports = process.env.LOCALIMPORTS;

const customModules = new Set([
  "y-websocket",
  "y-codemirror",
  "y-ace",
  "y-textarea",
  "y-quill",
  "y-dom",
  "y-prosemirror",
]);
/**
 * @type {Set<any>}
 */
const customLibModules = new Set(["lib0", "y-protocols"]);
const debugResolve = {
  resolveId(importee) {
    if (importee === "yjs") {
      return `${process.cwd()}/src/index.js`;
    }
    if (localImports) {
      if (customModules.has(importee.split("/")[0])) {
        return `${process.cwd()}/../${importee}/src/${importee}.js`;
      }
      if (customLibModules.has(importee.split("/")[0])) {
        return `${process.cwd()}/../${importee}`;
      }
    }
    return null;
  },
};

export default [
  {
    input: "./src/index.js",
    output: {
      name: "Y",
      file: "dist/yjs.js",
      format: "cjs",
      sourcemap: true,
      paths: (path) => {
        if (/^lib0\//.test(path)) {
          return `lib0/dist/${path.slice(5)}.cjs`;
        }
        return path;
      },
    },
    external: (id) => /^lib0\//.test(id),
  },

  {
    input: "./tests/testHelper.js",
    output: {
      name: "Y",
      file: "dist/testHelper.mjs",
      format: "esm",
      sourcemap: true,
    },
    external: (id) => /^lib0\//.test(id) || id === "yjs",
    plugins: [
      {
        resolveId(importee) {
          if (importee === "../src/index.js") {
            return "yjs";
          }
          return null;
        },
      },
    ],
  },
  {
    input: "./tests/index.js",
    output: {
      name: "test",
      file: "dist/tests.js",
      format: "iife",
      sourcemap: true,
    },
    plugins: [
      debugResolve,
      nodeResolve({
        mainFields: ["module", "browser", "main"],
      }),
      commonjs(),
    ],
  },
  {
    input: "./tests/index.js",
    output: {
      name: "test",
      file: "dist/tests.cjs",
      format: "cjs",
      sourcemap: true,
    },
    plugins: [
      debugResolve,
      nodeResolve({
        mainFields: ["module", "main"],
      }),
      commonjs(),
    ],
    external: ["isomorphic.js"],
  },
];