import path from 'path';
import { defineConfig } from 'vite';
import tsconfigPaths from 'vite-tsconfig-paths';
import packageJson from './package.json';

const entries = [
  'src/core/index.ts',
  'src/metadata/index.ts',
  'src/rest/index.ts',
  'src/generate/index.ts',
];

const externalDeps = [
  ...Object.keys(packageJson.dependencies),
  ...Object.keys(packageJson.devDependencies).filter(
    (dep) => dep !== 'twenty-shared',
  ),
  'node:fs/promises',
  'node:fs',
  'node:path',
  'node:os',
  'node:url',
];

const isExternal = (id: string) =>
  externalDeps.some((dep) => id === dep || id.startsWith(`${dep}/`));

const entryFileNames = (chunk: any, extension: 'cjs' | 'mjs') => {
  if (!chunk.isEntry) {
    throw new Error(
      `Should never occur, encountered a non entry chunk ${chunk.facadeModuleId}`,
    );
  }

  const splitFaceModuleId = chunk.facadeModuleId?.split('/');
  if (splitFaceModuleId === undefined) {
    throw new Error(
      `Should never occur, splitFaceModuleId is undefined ${chunk.facadeModuleId}`,
    );
  }

  const moduleDirectory = splitFaceModuleId[splitFaceModuleId?.length - 2];
  if (moduleDirectory === 'src') {
    return `${chunk.name}.${extension}`;
  }
  return `${moduleDirectory}.${extension}`;
};

export default defineConfig(() => {
  return {
    root: __dirname,
    cacheDir: '../../node_modules/.vite/packages/twenty-client-sdk',
    resolve: {
      alias: {
        '@/': path.resolve(__dirname, 'src') + '/',
      },
    },
    plugins: [
      tsconfigPaths({
        root: __dirname,
      }),
    ],
    build: {
      emptyOutDir: false,
      outDir: 'dist',
      lib: { entry: entries, name: 'twenty-client-sdk' },
      rollupOptions: {
        external: isExternal,
        output: [
          {
            format: 'es',
            entryFileNames: (chunk) => entryFileNames(chunk, 'mjs'),
          },
          {
            format: 'cjs',
            interop: 'auto',
            esModule: true,
            exports: 'named',
            entryFileNames: (chunk) => entryFileNames(chunk, 'cjs'),
          },
        ],
      },
    },
    logLevel: 'warn',
  };
});