analytics on timestamp

custom last months.ts

cleanPerMonth(
    data: {
      counter: number;
      month: number;
      year: number;
    }[],
    numberOfMonths: number
  ) {
    const result = [];
    const everyMonth = [];
    const months = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12];

    const today = new Date();
    let date;
    let month;
    let year;

    for (let index = numberOfMonths - 1; index >= 0; index -= 1) {
      date = new Date(today.getFullYear(), today.getMonth() - index, 1);
      month = months[date.getMonth()];
      year = date.getFullYear();
      everyMonth.push({ month: month, year: year });
    }

    everyMonth.forEach(element => {
      const dataDay = data.map(item => item.month);
      if (dataDay.indexOf(element.month) === -1) {
        result.push({ counter: 0, month: element.month, year: element.year });
      } else {
        result.push(data.filter(item => item.month === element.month)[0]);
      }
    });
    return result;
  }

last month.ts

cleanMonth(
    data: {
      counter: number;
      week: number;
    }[]
  ) {
    const result = [];
    const lastMonth = [
      this.getWeek(3),
      this.getWeek(2),
      this.getWeek(1),
      this.getWeek(0)
    ];
    lastMonth.forEach(element => {
      const dataDay = data.map(item => item.week);
      if (dataDay.indexOf(element) === -1) {
        result.push({ counter: 0, week: element });
      } else {
        result.push(data.filter(item => item.week === element)[0]);
      }
    });
    return result;
  }

  getWeek(subtract: number) {
    const date = new Date();
    const selectedDate = new Date(date.setDate(date.getDate() - subtract * 7));
    selectedDate.setHours(0, 0, 0, 0);
    // Thursday in current week decides the year.
    selectedDate.setDate(
      selectedDate.getDate() + 3 - ((selectedDate.getDay() + 6) % 7)
    );
    // January 4 is always in week 1.
    const week1 = new Date(selectedDate.getFullYear(), 0, 4);
    // Adjust to Thursday in week 1 and count number of weeks from date to week1.
    return (
      1 +
      Math.round(
        ((selectedDate.getTime() - week1.getTime()) / 86400000 -
          3 +
          ((week1.getDay() + 6) % 7)) /
          7
      )
    );
  }

last week.ts

cleanWeek(
    data: {
      counter: number;
      day: string;
    }[]
  ) {
    // 'Sun' | 'Mon' | 'Tue' | 'Wed' | 'Thu' | 'Fri' | 'Sat'
    const result = [];
    const lastWeek = [
      this.getDay(6),
      this.getDay(5),
      this.getDay(4),
      this.getDay(3),
      this.getDay(2),
      this.getDay(1),
      this.getDay(0)
    ];
    lastWeek.forEach(element => {
      const dataDay = data.map(item => item.day);
      if (dataDay.indexOf(element as any) === -1) {
        result.push({ counter: 0, day: element });
      } else {
        result.push(data.filter(item => item.day === element)[0]);
      }
    });
    return result;
  }

  getDay(subtract: number) {
    const date = new Date();
    return new Date(date.setDate(date.getDate() - subtract)).toLocaleString(
      'en-us',
      {
        weekday: 'short'
      }
    );
  }