import path from 'path';
import type { ModuleFormat, OutputOptions } from 'rollup';
import { PKG_NAME, epOutput, PKG_HUMP_NAME, epOutputCdn } from './paths';

export const modules = ['esm', 'cjs'] as const;
export type Module = (typeof modules)[number];
export interface BuildInfo {
  module: 'ESNext' | 'CommonJS';
  format: ModuleFormat;
  ext: 'mjs' | 'cjs' | 'js';
  output: {
    // es
    name: string;
    // dist/xs-components
    path: string;
  };

  bundle: {
    // xs-components/es
    path: string;
  };
}

export const buildConfig: Record<Module, BuildInfo> = {
  esm: {
    module: 'ESNext',
    format: 'esm',
    ext: 'mjs',
    output: {
      name: 'es',
      path: path.resolve(epOutput, 'es'),
    },
    bundle: {
      path: `${PKG_NAME}/es`,
    },
  },
  cjs: {
    module: 'CommonJS',
    format: 'cjs',
    ext: 'js',
    output: {
      name: 'lib',
      path: path.resolve(epOutput, 'lib'),
    },
    bundle: {
      path: `${PKG_NAME}/lib`,
    },
  },
};

export const buildCdnConfig: OutputOptions[] = [
  {
    format: 'umd',
    file: path.resolve(epOutputCdn, 'index.cdn.js'),
    exports: 'named',
    name: PKG_HUMP_NAME,
    globals: {
      vue: 'Vue',
    },
    sourcemap: true,
  },
  // https://github.com/vitejs/vite/issues/2204
  {
    format: 'esm',
    file: path.resolve(epOutputCdn, 'index.cdn.mjs'),
    sourcemap: true,
  },
];

export type BuildConfigEntries = [Module, BuildInfo][];
export const buildConfigEntries = Object.entries(buildConfig) as BuildConfigEntries;

export type BuildConfig = typeof buildConfig;