import { defineConfig, Rolldown } from 'tsdown'

const RE_CUSTOM = /\.custom$/

export default defineConfig({
  dts: {
    generator: 'oxc',
    // generator: 'tsc',
    customLanguages: [
      {
        extensionPatterns: [RE_CUSTOM],
        tsFileExtensionInfos: [
          {
            extension: 'custom',
            isMixedContent: true,
            scriptKind: 7 /* Deferred */,
          },
        ],
        toTsFilename: (id: string): string =>
          id.replace(RE_CUSTOM, '.custom.ts'),
      },
    ],
  },
  plugins: [
    {
      name: 'prepend-plugin',
      options(opt) {
        const plugin: Rolldown.Plugin = {
          name: 'convert-custom-to-ts',
          options(opt) {
            console.log(opt.plugins)
          },
          transform: {
            order: 'pre',
            filter: { id: RE_CUSTOM },
            handler(code) {
              return {
                code: code.replace('<script>', '').replace('</script>', ''),
                moduleType: 'ts',
              }
            },
          },
        }

        opt.plugins = [plugin, opt.plugins]
      },
    },
  ],
})