db.js

db.js

// menifest.json
//  "permissions": [
//    "storage"
//  ],

window.$seunggabi = {
  db:  (function () {
    let name = getName();
    let type = getType();

    function getName() {
      return chrome.runtime.getManifest().name.toUpperCase();
    }

    function getType() {
      return 'local';
    }

    function getStorage() {
      return new Promise((resolve) => {
        try {
          chrome.storage[type].get(name, (storage = {}) => {
            resolve(storage[name] || {});
          });
        } catch(e) {
          resolve();
        }
      });
    }

    function setStorage(data) {
      return new Promise((resolve) => {
        let obj = {};
        obj[name] = data;

        chrome.storage[type].set(obj, () => {
          resolve();
        });
      });
    }

    function put(key, value) {
      return new Promise((resolve) => {
        getStorage().then((storage = {}) => {
          storage[key] = value;

          setStorage(storage).then(() => {
            resolve(storage);
          });
        });
      });
    }

    function get(key) {
      return new Promise((resolve) => {
        getStorage().then((storage = {}) => {
          resolve(storage[key]);
        });
      });
    }

    return {
      put,
      get
    };
  })(),
}