import type {Config} from '../config'
import type {Flatten, OptionsIsInEditor, OptionsOverrides, OptionsPerfectionist} from '../options'
import {requireOf} from '../require-of'
import {interopDefault} from '../utils'
import {fallback} from './fallback'

/**
 * Represents the combined options for the Perfectionist ESLint plugin, including options for editor integration, overrides, and the Perfectionist plugin itself.
 */
export type PerfectionistOptions = Flatten<
  OptionsIsInEditor & OptionsOverrides & OptionsPerfectionist
>

/**
 * Perfectionist plugin for sorting items and properties.
 *
 * @see https://github.com/azat-io/eslint-plugin-perfectionist
 */
export async function perfectionist(options: PerfectionistOptions = {}): Promise<Config[]> {
  const {
    isInEditor = false,
    overrides = {},
    sortExports = true,
    sortImports = true,
    sortNamedExports = true,
    sortNamedImports = true,
  } = options
  return requireOf(
    ['eslint-plugin-perfectionist'],
    async () => {
      const pluginPerfectionist = await interopDefault(import('eslint-plugin-perfectionist'))
      return [
        {
          name: '@bfra.me/perfectionist',
          plugins: {
            perfectionist: pluginPerfectionist,
          },
          rules: {
            ...(sortNamedExports && {
              'perfectionist/sort-named-exports': [
                isInEditor ? 'warn' : 'error',
                {groupKind: 'values-first', type: 'natural'},
              ],
            }),

            ...(sortNamedImports && {
              'perfectionist/sort-named-imports': [
                isInEditor ? 'warn' : 'error',
                {groupKind: 'values-first', type: 'natural'},
              ],
            }),

            ...(sortExports && {
              'perfectionist/sort-exports': [isInEditor ? 'warn' : 'error', {type: 'natural'}],
            }),

            ...(sortImports && {
              'perfectionist/sort-imports': [
                isInEditor ? 'warn' : 'error',
                {
                  groups: [
                    'type',
                    ['parent-type', 'sibling-type', 'index-type'],
                    'builtin',
                    'external',
                    ['internal', 'internal-type'],
                    ['parent', 'sibling', 'index'],
                    'object',
                    'side-effect',
                    'side-effect-style',
                  ],
                  internalPattern: ['^[~#]/.*'],
                  newlinesBetween: 'ignore',
                  type: 'natural',
                },
              ],
            }),

            ...overrides,
          },
        },
      ]
    },
    fallback,
  )
}