notesnook/apps/mobile/src/utils/utils.js

import Storage from 'notes-core/api/index';
import {Dimensions} from 'react-native';
import {eSendEvent} from '../services/eventManager';
import {
  eOpenSideMenu,
  eCloseSideMenu,
  eDisableGestures,
  eEnableGestures,
  eShowToast,
  eHideToast,
} from '../services/events';
import {DeviceDetectionService} from './deviceDetection';
import StorageInterface from './storage';
import MMKV from 'react-native-mmkv-storage';
import {updateEvent} from '../components/DialogManager/recievers';
import {ACTIONS} from '../provider/actions';
export const DDS = new DeviceDetectionService();
export const db = new Storage(StorageInterface);

export async function setSetting(settings, name, value) {
  let s = {...settings};
  s[name] = value;
  await MMKV.setStringAsync('settings', JSON.stringify(s));

  updateEvent({type: ACTIONS.SETTINGS, settings: s});
}

export const getElevation = elevation => {
  return {
    elevation,
    shadowColor: 'black',
    shadowOffset: {width: 0.3 * elevation, height: 0.5 * elevation},
    shadowOpacity: 0.2,
    shadowRadius: 0.7 * elevation,
  };
};

export const editing = {
  currentlyEditing: false,
  isFullscreen: false,
  actionAfterFirstSave: {
    type: null,
  },
};
export const selection = {
  data: [],
  type: null,
  selectedItems: [],
};

export const history = {
  selectedItemsList: [],
};

export function timeSince(date) {
  var seconds = Math.floor((new Date() - date) / 1000);

  var interval = Math.floor(seconds / 31536000);

  if (interval > 0.9) {
    return interval < 2 ? interval + ' year ago' : interval + ' years ago';
  }
  interval = Math.floor(seconds / 2592000);
  if (interval > 0.9) {
    return interval < 2 ? interval + ' month ago' : interval + ' months ago';
  }
  interval = Math.floor(seconds / 86400);
  if (interval > 0.9) {
    return interval < 2 ? interval + ' day ago' : interval + ' days ago';
  }
  interval = Math.floor(seconds / 3600);
  if (interval > 0.9) {
    return interval < 2 ? interval + ' hour ago' : interval + ' hours ago';
  }
  interval = Math.floor(seconds / 60);
  if (interval > 0.9) {
    return interval < 2 ? interval + ' min ago' : interval + ' min ago';
  }
  return Math.floor(seconds) + ' secs ago';
}

export const w = Dimensions.get('window').width;
export const h = Dimensions.get('window').height;

export const ToastEvent = {
  show: (
    message,
    type,
    context = 'global',
    duration = 3000,
    func = null,
    actionText = '',
  ) => {
    eSendEvent(eShowToast, {
      message,
      type,
      context,
      duration,
      func,
      actionText,
    });
  },
  hide: (
    message,
    type,
    context = 'global',
    duration = 3000,
    func = null,
    actionText = '',
  ) => {
    eSendEvent(eHideToast, {
      message,
      type,
      context,
      duration,
      func,
      actionText,
    });
  },
};

export const timeConverter = timestamp => {
  if (!timestamp) return;
  var d = new Date(timestamp), // Convert the passed timestamp to milliseconds
    yyyy = d.getFullYear(),
    mm = ('0' + (d.getMonth() + 1)).slice(-2), // Months are zero based. Add leading 0.
    dd = ('0' + d.getDate()).slice(-2), // Add leading 0.
    currentDay = d.getDay(),
    hh = d.getHours(),
    h = hh,
    min = ('0' + d.getMinutes()).slice(-2), // Add leading 0.
    ampm = 'AM',
    time;
  let days = [
    'Sunday',
    'Monday',
    'Tuesday',
    'Wednesday',
    'Thursday',
    'Friday',
    'Saturday',
  ];
  var months = [
    'Jan',
    'Feb',
    'Mar',
    'Apr',
    'May',
    'Jun',
    'Jul',
    'Aug',
    'Sep',
    'Oct',
    'Nov',
    'Dec',
  ];

  if (hh > 12) {
    h = hh - 12;
    ampm = 'PM';
  } else if (hh === 12) {
    h = 12;
    ampm = 'PM';
  } else if (hh == 0) {
    h = 12;
  }

  // ie: 2013-02-18, 8:35 AM
  time =
    days[currentDay] +
    ' ' +
    dd +
    ' ' +
    months[d.getMonth()] +
    ', ' +
    yyyy +
    ', ' +
    h +
    ':' +
    min +
    ' ' +
    ampm;

  return time;
};

const isValidHex = hex => /^#([A-Fa-f0-9]{3,4}){1,2}$/.test(hex);

const getChunksFromString = (st, chunkSize) =>
  st.match(new RegExp(`.{${chunkSize}}`, 'g'));

const convertHexUnitTo256 = hexStr =>
  parseInt(hexStr.repeat(2 / hexStr.length), 16);

const getAlphafloat = (a, alpha) => {
  if (typeof a !== 'undefined') {
    return a / 256;
  }
  if (typeof alpha !== 'undefined') {
    if (1 < alpha && alpha <= 100) {
      return alpha / 100;
    }
    if (0 <= alpha && alpha <= 1) {
      return alpha;
    }
  }
  return 1;
};

export const hexToRGBA = (hex, alpha) => {
  if (!isValidHex(hex)) {
    throw new Error('Invalid HEX');
  }
  const chunkSize = Math.floor((hex.length - 1) / 3);
  const hexArr = getChunksFromString(hex.slice(1), chunkSize);
  const [r, g, b, a] = hexArr.map(convertHexUnitTo256);
  return `rgba(${r}, ${g}, ${b}, ${getAlphafloat(a, alpha)})`;
};