import resolve from '@rollup/plugin-node-resolve';
import commonjs from '@rollup/plugin-commonjs';
import typescript from '@rollup/plugin-typescript';

const external = ['cross-fetch', 'ws'];

export default [
  // CommonJS build
  {
    input: 'src/index.ts',
    output: {
      file: 'dist/index.js',
      format: 'cjs',
      exports: 'named',
      sourcemap: true
    },
    external,
    plugins: [
      resolve({
        preferBuiltins: true,
        browser: false
      }),
      commonjs(),
      typescript({
        declaration: true,
        declarationDir: 'dist',
        rootDir: 'src'
      })
    ]
  },

  // ES modules build
  {
    input: 'src/index.ts',
    output: {
      file: 'dist/index.esm.js',
      format: 'es',
      sourcemap: true
    },
    external,
    plugins: [
      resolve({
        preferBuiltins: true,
        browser: false
      }),
      commonjs(),
      typescript({
        declaration: false
      })
    ]
  },

  // Browser UMD build (includes dependencies)
  {
    input: 'src/index.ts',
    output: {
      file: 'dist/index.umd.js',
      format: 'umd',
      name: 'YouTubeSummarizerSDK',
      sourcemap: true,
      globals: {
        'cross-fetch': 'fetch',
        'ws': 'WebSocket'
      }
    },
    external: ['ws'], // Keep ws external for browser
    plugins: [
      resolve({
        preferBuiltins: false,
        browser: true
      }),
      commonjs(),
      typescript({
        declaration: false
      })
    ]
  }
];