import type {Config} from '../config'
import type {Flatten, OptionsFiles, OptionsOverrides, OptionsStylistic} from '../options'
import {GLOB_TOML_FILES} from '../globs'
import {interopDefault} from '../utils'
import {jsonSchema} from './json-schema'

/**
 * Represents the options for configuring TOML files in the ESLint configuration.
 */
export type TomlOptions = Flatten<OptionsFiles & OptionsOverrides & OptionsStylistic>

/**
 * Configures the ESLint rules for TOML files.
 * @param options - The configuration options for TOML files.
 * @see https://ota-meshi.github.io/eslint-plugin-toml/
 */
export async function toml(options: TomlOptions = {}): Promise<Config[]> {
  const {files = GLOB_TOML_FILES, overrides = {}, stylistic = true} = options
  const stylisticConfig = typeof stylistic === 'boolean' ? {} : stylistic
  const indent = typeof stylisticConfig.indent === 'number' ? stylisticConfig.indent : 2
  const includeStylistic = typeof stylistic === 'boolean' ? stylistic : true
  const pluginToml = await interopDefault(import('eslint-plugin-toml'))

  return [
    ...(pluginToml.configs.standard as Config[]).map((config: Config, index) => ({
      ...config,
      name: config.plugins
        ? `@bfra.me/toml/plugins`
        : `@bfra.me/${(config.name ?? '') || `toml/unnamed${index}`}`,
    })),
    ...(await jsonSchema('toml', files as string[])),
    {
      name: '@bfra.me/toml',
      files,
      rules: {
        '@stylistic/spaced-comment': 'off',

        'toml/comma-style': 'error',
        'toml/keys-order': 'error',
        'toml/no-space-dots': 'error',
        'toml/no-unreadable-number-separator': 'error',
        'toml/precision-of-fractional-seconds': 'error',
        'toml/precision-of-integer': 'error',
        'toml/tables-order': 'error',

        'toml/vue-custom-block/no-parsing-error': 'error',

        ...(includeStylistic
          ? {
              'toml/array-bracket-newline': 'error',
              'toml/array-bracket-spacing': 'error',
              'toml/array-element-newline': 'error',
              'toml/indent': ['error', indent],
              'toml/inline-table-curly-spacing': 'error',
              'toml/key-spacing': 'error',
              'toml/padding-line-between-pairs': 'error',
              'toml/padding-line-between-tables': 'error',
              'toml/quoted-keys': 'error',
              'toml/spaced-comment': 'error',
              'toml/table-bracket-spacing': 'error',
            }
          : {}),

        ...overrides,
      },
    },
  ]
}