index.js

const BaseAdapter = require("ghost-storage-base");
const upimg = require("upimg");

class UpCDNImgAdapter extends BaseAdapter {
  constructor(options) {
    super(options);
    this.options = options || {};
  }

  /**
   * Saves the image to for cdn accelerate
   * - image is the express image object
   * - returns a promise which ultimately returns the full url to the uploaded image
   *
   * @param image
   * @param targetDir
   * @returns {Promise}
   */
  save(image, targetDir) {
    if (
      ![
        "58",
        "alibaba",
        "baidu",
        "jd",
        "bilibili",
        "qcloud",
        "qiniu",
        "ximalaya"
      ].includes(this.options.server)
    ) {
      return Promise.reject("ghost-upimg is not configured");
    }

    let api = upimg[this.options.server];

    return new Promise((resolve, reject) => {
      api
        .upload(image.path)
        .then((result) => {
          resolve(result.url);
        })
        .catch((error) => {
          reject(error);
        });
    });
  }

  /**
   * @Overwrite
   * Ghost requires this function to be defined
   */
  exists(filename, targetDir) {
    return new Promise((resolve, reject) => {
      resolve(false);
    });
  }

  /**
   * @Overwrite
   * Ghost requires this function to be defined
   */
  serve() {
    return (req, res, next) => {
      next();
    };
  }

  /**
   * Not implemented.
   * May be implemented later.
   *
   * @returns {Promise.<*>}
   */
  delete() {
    return Promise.reject("not implemented");
  }

  /**
   * @Overwrite
   * Absolute url are already used to link to the images
   */
  read(options) {}
}

module.exports = UpCDNImgAdapter;