import fs from 'fs'
import path from 'path'
import typescript from '@rollup/plugin-typescript'
import babel from '@rollup/plugin-babel'
import postcss from 'rollup-plugin-postcss'
import tailwind from 'rollup-plugin-tailwindcss'
import autoprefixer from 'autoprefixer'
import resolve from '@rollup/plugin-node-resolve'
import commonjs from '@rollup/plugin-commonjs'
import { terser } from 'rollup-plugin-terser'

const pkgPath = path.resolve('package.json')
const pkg = JSON.parse(fs.readFileSync(pkgPath, 'utf8'))

const external = [
  ...Object.keys(pkg.dependencies || {}),
  ...Object.keys(pkg.peerDependencies || {}),
  /@babel\/runtime/
]

export default {
  input: 'src/index.ts',
  output: {
    dir: 'dist',
    format: 'esm',
    sourcemap: true,
    preserveModules: true,
    preserveModulesRoot: 'src'
  },
  external,
  plugins: [
    resolve(),
    commonjs(),
    typescript({
      declaration: true,
      noEmitOnError: true
    }),
    babel({
      extensions: ['.js', '.jsx', '.ts', '.tsx'],
      babelHelpers: 'runtime',
      include: ['src/**/*'],
      plugins: ['@babel/plugin-transform-runtime']
    }),
    postcss({
      plugins: [autoprefixer()],
      sourceMap: true,
      extract: true,
      minimize: true
    }),
    tailwind({
      input: './styles/globals.css'
    }),
    terser()
  ]
}