import { type IDisposable, type languages, type MonacoEditor } from 'monaco-types'
import { type Config } from 'tailwindcss'

/**
 * A Tailwind configuration, but without content.
 */
export type TailwindConfig = Omit<Config, 'content'>

export interface MonacoTailwindcssOptions {
  /**
   * @default defaultLanguageSelector
   */
  languageSelector?: languages.LanguageSelector

  /**
   * The tailwind configuration to use.
   *
   * This may be either the Tailwind configuration object, or a string that gets processed in the
   * worker.
   */
  tailwindConfig?: TailwindConfig | string
}

/**
 * Contains the content of CSS classes to extract.
 * With optional "extension" key, which might be relevant
 * to properly extract css classed based on the content language.
 */
export interface Content {
  content: string
  extension?: string
}

export interface MonacoTailwindcss extends IDisposable {
  /**
   * Update the current Tailwind configuration.
   *
   * @param tailwindConfig
   *   The new Tailwind configuration.
   */
  setTailwindConfig: (tailwindConfig: TailwindConfig | string) => void

  /**
   * Generate styles using Tailwindcss.
   *
   * This generates CSS using the Tailwind JIT compiler. It uses the Tailwind configuration that has
   * previously been passed to {@link configureMonacoTailwindcss}.
   *
   * @param css
   *   The CSS to process. Only one CSS file can be processed at a time.
   * @param content
   *   All content that contains CSS classes to extract.
   * @returns
   *   The CSS generated by the Tailwind JIT compiler. It has been optimized for the given  content.
   * @example
   * monacoTailwindcss.generateStylesFromContent(
   *   css,
   *   editor.getModels().filter((model) => model.getLanguageId() === 'html')
   * )
   */
  generateStylesFromContent: (css: string, content: (Content | string)[]) => Promise<string>
}

/**
 * Configure `monaco-tailwindcss`.
 *
 * @param monaco
 *   The `monaco-editor` module.
 * @param options
 *   Options for customizing the `monaco-tailwindcss`.
 */
export function configureMonacoTailwindcss(
  monaco: MonacoEditor,
  options?: MonacoTailwindcssOptions
): MonacoTailwindcss

/**
 * This data can be used with the default Monaco CSS support to support tailwind directives.
 *
 * It will provider hover information from the Tailwindcss documentation, including a link.
 */
export const tailwindcssData: languages.css.CSSDataV1