import React, { Component } from 'react';
import moment from 'moment';
// import { formatDateInputs } from '../../utils/helper_functions';

const formatDateInputs = (value) => {
  let input = value || '';
  input = input.replace(/\D/g, '');

  input = input.substring(0, 8);
  const size = input.length;

  if (size < 3) {
    return input;
  }
  if (size < 5) {
    return `${input.substring(0, 2)}/${input.substring(2, 4)}`;
  }
  if (size < 9) {
    return `${input.substring(0, 2)}/${input.substring(2, 4)}/${input.substring(4)}`;
  }
};

class DatePickerCustomInput extends Component {
  constructor(props) {
    super(props);

    this.state = {
      stateValue: '',
    };
  }
  componentWillMount() {
    this.setState({ stateValue: formatDateInputs(this.props.value) });
  }
  componentWillReceiveProps(nextProps) {
    if (nextProps.value) {
      const newValue = formatDateInputs(nextProps.value);
      this.setState({ stateValue: newValue });
    }
  }
  handleRawChange = (e) => {
    const date = e.target.value;
    const newDate = formatDateInputs(date);

    this.setState({ stateValue: newDate });

    if (newDate.length === 10 && moment(newDate, 'MM/DD/YYYY').isValid) {
      this.props.pickerOnChange(moment(newDate, 'MM/DD/YYYY').toISOString());
    }
  };
  render() {
    return (
      <input
        type="text"
        value={this.state.stateValue === 'Invalid date' ? '' : this.state.stateValue}
        onChange={this.handleRawChange}
        onClick={this.props.onClick}
        placeholder="MM/DD/YYYY"
        onBlur={this.props.onBlur}
        disabled={this.props.disabled}
      />
    );
  }
}

export default DatePickerCustomInput;