/** Every label, prompt and error the Blog Editor shows. */
export interface Labels {
  tabWysiwyg: string
  tabSource: string
  toolbar: string
  paragraph: string
  heading2: string
  heading3: string
  heading4: string
  bold: string
  italic: string
  bulletList: string
  orderedList: string
  link: string
  blockquote: string
  insertTable: string
  addRow: string
  deleteRow: string
  addColumn: string
  deleteColumn: string
  deleteTable: string
  image: string
  embed: string
  rawHtml: string
  undo: string
  redo: string
  linkUrl: string
  linkApply: string
  linkRemove: string
  linkInvalid: string
  embedUrl: string
  embedInsert: string
  embedInvalid: string
  cancel: string
  uploading: string
  uploadFailed: string
  uploadTimeout: string
  notAnImage: string
  altText: string
  caption: string
  altRequired: string
  insertImage: string
  rawHtmlCard: string
  editAsHtml: string
  embedCard: string
  preview: string
  previewFrame: string
}

const en: Labels = {
  tabWysiwyg: 'WYSIWYG',
  tabSource: 'Source',
  toolbar: 'Formatting',
  paragraph: 'Paragraph',
  heading2: 'Heading 2',
  heading3: 'Heading 3',
  heading4: 'Heading 4',
  bold: 'Bold',
  italic: 'Italic',
  bulletList: 'Bullet list',
  orderedList: 'Numbered list',
  link: 'Link',
  blockquote: 'Quote',
  insertTable: 'Insert table',
  addRow: 'Add row',
  deleteRow: 'Delete row',
  addColumn: 'Add column',
  deleteColumn: 'Delete column',
  deleteTable: 'Delete table',
  image: 'Image',
  embed: 'Embed video',
  rawHtml: 'HTML block',
  undo: 'Undo',
  redo: 'Redo',
  linkUrl: 'Link URL',
  linkApply: 'Apply',
  linkRemove: 'Remove link',
  linkInvalid: 'Links must use http, https, mailto or a relative URL.',
  embedUrl: 'YouTube URL',
  embedInsert: 'Insert',
  embedInvalid: 'This video URL is not supported. Paste a YouTube link.',
  cancel: 'Cancel',
  uploading: 'Uploading {name}…',
  uploadFailed: 'Upload failed: {error}',
  uploadTimeout: 'The upload of {name} took too long.',
  notAnImage: 'Only JPEG, PNG, GIF and WebP images can be uploaded.',
  altText: 'Alt text (required)',
  caption: 'Caption (optional)',
  altRequired: 'Enter the alt text.',
  insertImage: 'Insert image',
  rawHtmlCard: 'HTML block',
  editAsHtml: 'Edit as HTML',
  embedCard: 'Embedded video',
  preview: 'Preview',
  previewFrame: 'Post preview',
}

const pl: Labels = {
  tabWysiwyg: 'WYSIWYG',
  tabSource: 'Źródło',
  toolbar: 'Formatowanie',
  paragraph: 'Akapit',
  heading2: 'Nagłówek 2',
  heading3: 'Nagłówek 3',
  heading4: 'Nagłówek 4',
  bold: 'Pogrubienie',
  italic: 'Kursywa',
  bulletList: 'Lista punktowana',
  orderedList: 'Lista numerowana',
  link: 'Link',
  blockquote: 'Cytat',
  insertTable: 'Wstaw tabelę',
  addRow: 'Dodaj wiersz',
  deleteRow: 'Usuń wiersz',
  addColumn: 'Dodaj kolumnę',
  deleteColumn: 'Usuń kolumnę',
  deleteTable: 'Usuń tabelę',
  image: 'Obraz',
  embed: 'Osadź wideo',
  rawHtml: 'Blok HTML',
  undo: 'Cofnij',
  redo: 'Ponów',
  linkUrl: 'Adres linku',
  linkApply: 'Zastosuj',
  linkRemove: 'Usuń link',
  linkInvalid: 'Link musi używać http, https, mailto albo adresu względnego.',
  embedUrl: 'Adres filmu YouTube',
  embedInsert: 'Wstaw',
  embedInvalid: 'Ten adres filmu nie jest obsługiwany. Wklej link do YouTube.',
  cancel: 'Anuluj',
  uploading: 'Wysyłanie {name}…',
  uploadFailed: 'Wysyłanie nie powiodło się: {error}',
  uploadTimeout: 'Wysyłanie {name} trwało zbyt długo.',
  notAnImage: 'Można wysłać tylko obrazy JPEG, PNG, GIF i WebP.',
  altText: 'Tekst alternatywny (wymagany)',
  caption: 'Podpis (opcjonalny)',
  altRequired: 'Wpisz tekst alternatywny.',
  insertImage: 'Wstaw obraz',
  rawHtmlCard: 'Blok HTML',
  editAsHtml: 'Edytuj jako HTML',
  embedCard: 'Osadzone wideo',
  preview: 'Podgląd',
  previewFrame: 'Podgląd wpisu',
}

const TABLES: Record<string, Labels> = { en, pl }

/**
 * labelsFor returns the labels for the admin UI locale (the element's
 * ui-locale attribute): the table for its language subtag, else English.
 */
export function labelsFor(uiLocale: string | null | undefined): Labels {
  const language = (uiLocale ?? '').toLowerCase().split(/[-_]/)[0] ?? ''
  return TABLES[language] ?? en
}

/** format replaces {name} placeholders in a label. */
export function format(label: string, values: Record<string, string>): string {
  return label.replace(/\{(\w+)\}/g, (match, key: string) => values[key] ?? match)
}