@platformos/pos-cli/gui/graphql/node_modules/graphiql/esm/utility/QueryStore.js

Manage your platformOS application

/**
 *  Copyright (c) 2019 GraphQL Contributors.
 *
 *  This source code is licensed under the MIT license found in the
 *  LICENSE file in the root directory of this source tree.
 */
export default class QueryStore {
  constructor(key, storage, maxSize = null) {
    this.key = key;
    this.storage = storage;
    this.maxSize = maxSize;
    this.items = this.fetchAll();
  }

  get length() {
    return this.items.length;
  }

  contains(item) {
    return this.items.some(x => x.query === item.query && x.variables === item.variables && x.operationName === item.operationName);
  }

  edit(item) {
    const itemIndex = this.items.findIndex(x => x.query === item.query && x.variables === item.variables && x.operationName === item.operationName);

    if (itemIndex !== -1) {
      this.items.splice(itemIndex, 1, item);
      this.save();
    }
  }

  delete(item) {
    const itemIndex = this.items.findIndex(x => x.query === item.query && x.variables === item.variables && x.operationName === item.operationName);

    if (itemIndex !== -1) {
      this.items.splice(itemIndex, 1);
      this.save();
    }
  }

  fetchRecent() {
    return this.items[this.items.length - 1];
  }

  fetchAll() {
    const raw = this.storage.get(this.key);

    if (raw) {
      return JSON.parse(raw)[this.key];
    }

    return [];
  }

  push(item) {
    const items = [...this.items, item];

    if (this.maxSize && items.length > this.maxSize) {
      items.shift();
    }

    for (let attempts = 0; attempts < 5; attempts++) {
      const response = this.storage.set(this.key, JSON.stringify({
        [this.key]: items
      }));
      ;

      if (!response || !response.error) {
        this.items = items;
      } else if (response.isQuotaError && this.maxSize) {
        // Only try to delete last items on LRU stores
        items.shift();
      } else {
        return; // We don't know what happened in this case, so just bailing out
      }
    }
  }

  save() {
    this.storage.set(this.key, JSON.stringify({
      [this.key]: this.items
    }));
  }

}