peertube-plugin-livechat/client/common/lib/directives/translation.ts

// SPDX-FileCopyrightText: 2024 Mehdi Benadel <https://mehdibenadel.com>
//
// SPDX-License-Identifier: AGPL-3.0-only

import { /* PartInfo, */ directive } from 'lit/directive.js'
import { AsyncDirective } from 'lit/async-directive.js'
import { RegisterClientHelpers } from '@peertube/peertube-types/client'
import { unsafeHTML } from 'lit/directives/unsafe-html.js'
import { html } from 'lit'

export class TranslationDirective extends AsyncDirective {
  private readonly _peertubeHelpers?: RegisterClientHelpers

  private _translatedValue: string = ''
  private _localizationId: string = ''

  private _allowUnsafeHTML = false

  // constructor (partInfo: PartInfo) {
  //   super(partInfo)

  //   _peertubeOptionsPromise.then((options) => this._peertubeHelpers = options.peertubeHelpers)
  // }

  // update = (part: ElementPart) => {
  //   if (part) console.log(`Element : ${part?.element?.getAttributeNames?.().join(' ')}`);
  //   return this.render(this._localizationId);
  // }

  public override render = (locId: string, allowHTML: boolean = false): unknown => {
    this._localizationId = locId // TODO Check current component for context (to infer the prefix)

    this._allowUnsafeHTML = allowHTML

    if (this._translatedValue === '') {
      this._translatedValue = locId
    }

    this._asyncUpdateTranslation().then(() => {}, () => {})

    return this._internalRender()
  }

  private readonly _internalRender = (): unknown => {
    return this._allowUnsafeHTML ? html`${unsafeHTML(this._translatedValue)}` : this._translatedValue
  }

  private readonly _asyncUpdateTranslation = async (): Promise<true> => {
    const newValue = await this._peertubeHelpers?.translate(this._localizationId) ?? ''

    if (newValue !== '' && newValue !== this._translatedValue) {
      this._translatedValue = newValue
      this.setValue(this._internalRender())
    }

    return true
  }
}

export const ptTr = directive(TranslationDirective)