import { Field, Filter, Options } from '@silexlabs/grapesjs-data-source'
import { EleventyPluginOptions } from '../client'
import { html } from 'lit-html'
import { Component } from 'grapesjs'

export default function(config, opts: EleventyPluginOptions): void {
  config.on('silex:startup:end', () => {
    const dm = config.getEditor().DataSourceManager
    if(!dm) {
      throw new Error('No DataSourceManager found, did you forget to add the DataSource plugin?')
    }
    const enable11ty = config.getEditor().getModel().get('settings')?.eleventyI18n
    if (opts.i18nPlugin || (typeof opts.i18nPlugin === 'undefined' && enable11ty)) {
      dm.filters.push(...i18nFilters)
    }
    // Eleventy provided filters: https://www.11ty.dev/docs/filters/#eleventy-provided-filters
    dm.filters.push({
      type: 'filter',
      id: 'log',
      label: 'log (11ty)',
      validate: (field: Field | null) => !!field,
      output: type => type,
      apply: (str) => {
        console.info(str)
        return str
      },
      options: {},
    }, {
      type: 'filter',
      id: 'slugify',
      label: 'slugify (11ty)',
      validate: (field: Field | null) => !!field && field.typeIds.map(t => t.toLowerCase()).includes('string') && field.kind === 'scalar',
      output: type => type,
      apply: (str) => {
        return str.toString().toLowerCase().replace(/\s+/g, '-')
      },
      options: {},
    })
  })


  const i18nFilters: Filter[] = [{
    type: 'filter',
    id: 'locale_url',
    label: 'locale_url (11ty)',
    validate: (input: Field | null) => !!input?.typeIds.map(t => t.toLowerCase()).includes('string') && input?.kind === 'scalar',
    apply: (input: unknown/*, options: Options*/) => input,
    output: (input: Field | null/*, options: Options*/) => ({ ...(input || {} as Field), typeIds: ['String'] }),
    options: {
      locale: '',
    },
    quotedOptions: ['locale'],
    optionsForm: (selected: Component, input: Field | null, options: Options) => html`
      <label>Locale
        <input type="text" name="locale" value="${options.locale}" />
      </label>
    `,
  }, {
    type: 'filter',
    id: 'locale_links',
    label: 'locale_links (11ty)',
    validate: (input: Field | null) => !!input?.typeIds.map(t => t.toLowerCase()).includes('string') && input?.kind === 'scalar',
    apply: (input: unknown/*, options: Options*/) => ([{ url: input, lang: 'en', label: 'English' }, { url: input, lang: 'fr', label: 'Français' }]),
    output: (input: Field | null/*, options: Options*/) => ({ ...(input || {} as Field), typeIds: ['locale_link'], kind: 'list' }),
    options: {},
  }]
}