<script>
import Pikaday from 'pikaday';
import { parsePikadayDate, pikadayToString } from '~/lib/utils/datetime_utility';

export default {
  name: 'DatePicker',
  props: {
    label: {
      type: String,
      required: false,
      default: 'Date picker',
    },
    selectedDate: {
      type: Date,
      required: false,
      default: null,
    },
    minDate: {
      type: Date,
      required: false,
      default: null,
    },
    maxDate: {
      type: Date,
      required: false,
      default: null,
    },
  },
  mounted() {
    this.calendar = new Pikaday({
      field: this.$el.querySelector('.dropdown-menu-toggle'),
      theme: 'gitlab-theme animate-picker',
      format: 'yyyy-mm-dd',
      container: this.$el,
      defaultDate: this.selectedDate,
      setDefaultDate: !!this.selectedDate,
      minDate: this.minDate,
      maxDate: this.maxDate,
      parse: dateString => parsePikadayDate(dateString),
      toString: date => pikadayToString(date),
      onSelect: this.selected.bind(this),
      onClose: this.toggled.bind(this),
      firstDay: gon.first_day_of_week,
    });

    this.$el.append(this.calendar.el);
    this.calendar.show();
  },
  beforeDestroy() {
    this.calendar.destroy();
  },
  methods: {
    selected(dateText) {
      this.$emit('newDateSelected', this.calendar.toString(dateText));
    },
    toggled() {
      this.$emit('hidePicker');
    },
  },
};
</script>

<template>
  <div class="pikaday-container">
    <div class="dropdown open">
      <button type="button" class="dropdown-menu-toggle" data-toggle="dropdown" @click="toggled">
        <span class="dropdown-toggle-text"> {{ label }} </span>
        <i class="fa fa-chevron-down" aria-hidden="true"> </i>
      </button>
    </div>
  </div>
</template>
