<template>
  <div class="filters-options dropdown" @keydown.esc="showOptions = false">
    <div class="dropdown_background" v-if="showOptions" @click="showOptions = false"></div>

    <div class="actions-bar">
      <button
        class="filter-button btn--filled btn--image"
        @click="showOptions = !showOptions"
        ref="button"
      >
        <img src="/images/icon-filter2.svg" alt="Open filters" />
        {{ $t('options.filters') }} [F]
        <span class="active-indicator" v-if="currentOptionsActive"></span>
      </button>

      <button class="filter-button btn--filled btn--image" @click="refreshData">
        <img src="/images/icon-refresh.svg" alt="Refresh data" />
        {{ $t('general.refresh') }}
      </button>
    </div>

    <datalist id="search-driver">
      <option v-for="(sugg, i) in driverSuggestions" :key="i" :value="sugg"></option>
    </datalist>

    <datalist id="search-dispatcher">
      <option v-for="(sugg, i) in dispatcherSuggestions" :key="i" :value="sugg"></option>
    </datalist>

    <transition name="dropdown-anim">
      <div class="dropdown_wrapper" v-if="showOptions">
        <div class="options_content">
          <h1 class="option-title">{{ $t('options.search-title') }}</h1>
          <div class="search_content">
            <div class="search" v-for="(_, propName) in searchersValues" :key="propName">
              <label v-if="propName == 'search-date'" for="search-date">{{
                $t(`options.search-${optionsType}-date`)
              }}</label>

              <div class="search-box">
                <input
                  class="search-input"
                  v-model="searchersValues[propName]"
                  @keydown.enter="searchConfirm"
                  @focus="preventKeyDown = true"
                  @blur="preventKeyDown = false"
                  :placeholder="$t(`options.${propName}`)"
                  :type="propName == 'search-date' ? 'date' : 'text'"
                  :min="propName == 'search-date' ? '2022-02-01' : undefined"
                  :id="`${propName}`"
                  :list="propName.toString()"
                />

                <button class="search-exit" v-if="propName != 'search-date'">
                  <img
                    src="/images/icon-exit.svg"
                    alt="exit-icon"
                    @click="onInputClear(propName)"
                  />
                </button>
              </div>
            </div>
          </div>

          <h1 class="option-title">{{ $t('options.sort-title') }}</h1>
          <div class="options_sorters">
            <div v-for="opt in translatedSorterOptions" :key="opt.id">
              <button
                class="sort-option btn--option"
                :data-selected="opt.id == sorterActive.id"
                @click="onSorterChange(opt)"
              >
                {{ opt.value.toUpperCase() }}
              </button>
            </div>
          </div>

          <h1 class="option-title" v-if="filters.length != 0">{{ $t('options.filter-title') }}</h1>

          <div class="options_filter-sections" v-if="filters.length != 0 && filterList">
            <section class="filter-section" v-for="section in JournalFilterSection" :key="section">
              <p>{{ $t(`options.filter-section-${section}`) }}</p>

              <div class="options_filters">
                <button
                  v-for="filter in filterList.filter((f) => f.filterSection == section)"
                  :key="filter.id"
                  class="filter-option btn--option"
                  :class="{ checked: filter.isActive }"
                  :id="filter.id"
                  @click="onFilterChange(filter)"
                >
                  {{ $t(`options.filter-${filter.id}`) }}
                </button>
              </div>
            </section>
          </div>

          <div class="options_actions">
            <button class="btn--action" @click="onResetButtonClick">
              {{ $t('options.reset-button') }}
            </button>
            <button class="btn--action" @click="onSearchButtonConfirm">
              {{ $t('options.search-button') }}
            </button>
          </div>
        </div>
      </div>
    </transition>
  </div>
</template>

<script lang="ts">
import { defineComponent, inject, PropType } from 'vue';
import keyMixin from '../../mixins/keyMixin';
import { useMainStore } from '../../store/mainStore';
import { Journal } from './typings';
import { Status } from '../../typings/common';
import { useApiStore } from '../../store/apiStore';

export default defineComponent({
  emits: ['onSearchConfirm', 'onOptionsReset', 'onRefreshData'],
  mixins: [keyMixin],

  props: {
    sorterOptionIds: {
      type: Array as PropType<Array<string>>,
      required: true
    },

    filters: {
      type: Array as PropType<Journal.TimetableFilter[]>,
      default: () => []
    },

    dataStatus: {
      type: Number as PropType<Status.Data>,
      default: -1
    },

    currentOptionsActive: {
      type: Boolean,
      default: false
    },

    optionsType: {
      type: String,
      required: true
    }
  },

  data() {
    return {
      showOptions: false,

      driverSuggestions: [] as string[],
      dispatcherSuggestions: [] as string[],

      searchTimeout: 0,
      store: useMainStore(),
      apiStore: useApiStore(),

      JournalFilterSection: Journal.FilterSection
    };
  },

  setup() {
    return {
      searchersValues: inject('searchersValues') as { [key: string]: string },
      sorterActive: inject('sorterActive') as { id: string | number; dir: number },
      filterList: inject('filterList') as Journal.TimetableFilter[] | undefined
    };
  },

  computed: {
    translatedSorterOptions() {
      return this.$props.sorterOptionIds.map((id) => ({
        id,
        value: this.$t(`options.sort-${id}`)
      }));
    }
  },

  watch: {
    async 'searchersValues.search-driver'(value: string | undefined) {
      clearTimeout(this.searchTimeout);

      if (!value || value == '') return;
      if (value.length < 3) return;

      this.startSearchTimeout('driver', value);
    },

    async 'searchersValues.search-dispatcher'(value: string | undefined) {
      if (!value || value == '') return;
      if (value.length < 3) return;

      this.startSearchTimeout('dispatcher', value);
    }
  },

  methods: {
    // filters & sorters from URL params
    handleRouteParams() {
      this.$router.push({
        query: {
          ...this.$route.query,
          'sorter-active':
            this.sorterOptionIds.indexOf(`${this.sorterActive.id}`) != 0
              ? this.sorterActive.id
              : undefined,
          ...Object.keys(this.searchersValues).reduce(
            (acc, k) => {
              const searchVal = this.searchersValues[k as Journal.TimetableSearchKey];

              acc[k] = searchVal || undefined;

              return acc;
            },
            {} as { [k: string]: string | undefined }
          ),
          ...this.filterList?.reduce(
            (acc, f) => {
              if (f.isActive) acc[f.filterSection] = f.default ? undefined : f.id;
              return acc;
            },
            {} as { [k: string]: string | undefined }
          )
        }
      });
    },

    refreshData() {
      this.$emit('onRefreshData');
    },

    startSearchTimeout(type: 'driver' | 'dispatcher', value: string) {
      if (this[`${type}Suggestions`].includes(value)) return;

      window.clearTimeout(this.searchTimeout);

      this.searchTimeout = window.setTimeout(async () => {
        try {
          const suggestions: string[] = await (
            await this.apiStore.client!.get(`api/get${type}Suggestions?name=${value}`)
          ).data;

          this[`${type}Suggestions`] = suggestions;
        } catch (error) {
          this[`${type}Suggestions`] = [];
        }
      }, 250);
    },

    // Override keyMixin function
    onKeyDownFunction() {
      this.showOptions = !this.showOptions;

      this.$nextTick(() => {
        if (this.showOptions) (this.$refs['button'] as HTMLButtonElement)?.focus();
      });
    },

    onSorterChange(item: { id: string | number; value: string }) {
      this.sorterActive.id = item.id;
      this.sorterActive.dir = -1;
      this.searchConfirm();
    },

    onFilterChange(filter: Journal.TimetableFilter) {
      // this.journalFilterActive = filter;
      this.filterList
        ?.filter((f) => f.filterSection === filter.filterSection)
        .forEach((f) => (f.isActive = false));
      filter.isActive = true;

      this.searchConfirm();
    },

    onInputClear(id: any) {
      this.searchersValues[id] = '';
      this.searchConfirm();
    },

    searchConfirm() {
      this.$emit('onSearchConfirm');
      this.handleRouteParams();
    },

    onSearchButtonConfirm() {
      this.showOptions = false;
      this.searchConfirm();
    },

    onResetButtonClick() {
      this.$emit('onOptionsReset');
      this.handleRouteParams();
    }
  }
});
</script>

<style lang="scss" scoped>
@import '../../styles/dropdown.scss';
@import '../../styles/dropdown_filters.scss';
</style>
