<script setup lang="ts">
import type { OrderingProps } from '~/composables/navigation/useOrdering'
import type { Artist, BackendResponse } from '~/types'
import type { RouteRecordName } from 'vue-router'
import type { OrderingField } from '~/store/ui'

import { computed, ref, watch, onMounted } from 'vue'
import { useRouteQuery } from '@vueuse/router'
import { useI18n } from 'vue-i18n'
import { syncRef } from '@vueuse/core'
import { sortedUniq } from 'lodash-es'
import { useStore } from '~/store'

import axios from 'axios'

import TagsSelector from '~/components/library/TagsSelector.vue'
import RemoteSearchForm from '~/components/RemoteSearchForm.vue'
import Modal from '~/components/ui/Modal.vue'
import ArtistCard from '~/components/artist/Card.vue'
import Pagination from '~/components/ui/Pagination.vue'
import Layout from '~/components/ui/Layout.vue'
import Button from '~/components/ui/Button.vue'
import Input from '~/components/ui/Input.vue'
import Alert from '~/components/ui/Alert.vue'
import Spacer from '~/components/ui/layout/Spacer.vue'
import Pills from '~/components/ui/Pills.vue'

import useSharedLabels from '~/composables/locale/useSharedLabels'
import useOrdering from '~/composables/navigation/useOrdering'
import useErrorHandler from '~/composables/useErrorHandler'
import usePage from '~/composables/navigation/usePage'
import useLogger from '~/composables/useLogger'

interface Props extends OrderingProps {
  scope?: 'me' | 'all'

  // TODO(wvffle): Remove after https://github.com/vuejs/core/pull/4512 is merged
  orderingConfigName?: RouteRecordName
}

const props = withDefaults(defineProps<Props>(), {
  scope: 'all',
  orderingConfigName: undefined
})

const page = usePage()

const tags = useRouteQuery<string[]>('tag', [])

const tagList = computed(() => ({
  current: tags.value,
  others: []
}))

const q = useRouteQuery('query', '')
const query = ref(q.value)
syncRef(q, query, { direction: 'ltr' })

const result = ref<BackendResponse<Playlist>>()
const showSubscribeModal = ref(false)

const orderingOptions: [OrderingField, keyof typeof sharedLabels.filters][] = [
  ['creation_date', 'creation_date'],
  ['name', 'name']
]

const logger = useLogger()
const sharedLabels = useSharedLabels()

const { onOrderingUpdate, orderingString, paginateBy, ordering, orderingDirection } = useOrdering(props)

const isLoading = ref(false)
const fetchData = async () => {
  isLoading.value = true
  const params = {
    scope: props.scope,
    page: page.value,
    page_size: paginateBy.value,
    q: query.value,
    ordering: orderingString.value,
    playable: 'true',
    tag: tags.value,
    include_channels: 'true',
    content_category: 'podcast'
  }

  const measureLoading = logger.time('Fetching podcasts')
  try {
    const response = await axios.get('artists/', {
      params,
      paramsSerializer: {
        indexes: null
      }
    })

    result.value = response.data
  } catch (error) {
    useErrorHandler(error as Error)
    result.value = undefined
  } finally {
    measureLoading()
    isLoading.value = false
  }
}

const store = useStore()
watch(() => store.state.moderation.lastUpdate, fetchData)
watch([page, tags, q], fetchData)
fetchData()

const search = () => {
  page.value = 1
  q.value = query.value
}

const artistOrdering = ref(false)

onOrderingUpdate(() => {
  page.value = 1
  fetchData()
})

// onMounted(() => $('.ui.dropdown').dropdown())

const { t } = useI18n()
const labels = computed(() => ({
  searchPlaceholder: t('components.library.Podcasts.placeholder.search'),
  title: t('components.library.Podcasts.title')
}))

const paginateOptions = computed(() => sortedUniq([12, 30, 50, paginateBy.value].sort((a, b) => a - b)))
</script>

<template>
  <Layout stack main>
    <h1>{{ t('components.library.Podcasts.header.browse') }}</h1>
    <Layout form flex
      :class="['ui', {'loading': isLoading}, 'form']"
      @submit.prevent="search"
    >
      <Input search
        id="artist-search"
        v-model="query"
        name="search"
        :label="t('components.library.Podcasts.label.search')"
        autofocus
        :placeholder="labels.searchPlaceholder"
      >
      </Input>
      <Pills
        v-model="tagList"
        :label="t('components.library.Podcasts.label.tags')"
        style="max-width: 150px;"
      />
      <select
        id="artist-ordering"
        :label="t('components.library.Podcasts.ordering.label')"
        v-model="ordering"
        class="dropdown"
      >
        <option
          v-for="(option, key) in orderingOptions"
          :key="key"
          :value="option[0]"
        >
          {{ sharedLabels.filters[option[1]] }}
        </option>
      </select>
      <select
        :label="t('components.library.Podcasts.ordering.direction.label')"
        id="artist-ordering-direction"
        v-model="orderingDirection"
        class="ui dropdown"
      >
        <option value="+">
          {{ t('components.library.Podcasts.ordering.direction.ascending') }}
        </option>
        <option value="-">
          {{ t('components.library.Podcasts.ordering.direction.descending') }}
        </option>
      </select>
      <select
        :label="t('components.library.Podcasts.pagination.results')"
        id="artist-results"
        v-model="paginateBy"
        class="ui dropdown"
      >
        <option
          v-for="opt in paginateOptions"
          :key="opt"
          :value="opt"
        >
          {{ opt }}
        </option>
      </select>
    </Layout>
    <Layout grid
      v-if="result && result.results.length > 0"
      style="display:flex; flex-wrap:wrap; gap: 32px; margin-top:32px;"
    >
    <Loader v-if="isLoading"/>
      <artist-card
        v-for="artist in result.results"
        :key="artist.id"
        :artist="artist"
      />
    </Layout>
    <Layout
      stack
      v-else-if="result && result.results.length === 0"
    >
      <Alert yellow>
        {{ t('components.library.Podcasts.empty.noResults') }}
      </Alert>
      <Layout flex>
        <Button
          v-if="store.state.auth.authenticated"
          icon="bi-plus"
          primary
          @click.stop.prevent="showSubscribeModal = true"
        >
          {{ t('components.library.Podcasts.button.feed') }}
        </Button>
        <Button
          primary
          v-if="store.state.auth.authenticated"
          icon="bi-upload"
          :to="{name: 'content.index'}"
        >
        {{ t('components.library.Podcasts.button.channel') }}
        </Button>
      </Layout>
    </Layout>
    <Spacer grow />
    <Pagination
      v-if="result && result.count > paginateBy"
      :page="page"
      :pages="Math.ceil((result?.results.length || 0)/paginateBy)"
    />
  <Modal
    v-model:show="showSubscribeModal"
    title="t('components.library.Podcasts.modal.subscription.header')"
  >
    <div
      ref="modalContent"
      class="scrolling content"
    >
      <remote-search-form
        initial-type="both"
        :show-submit="false"
        :standalone="false"
        :redirect="true"
        @subscribed="showSubscribeModal = false; fetchData()"
      />
    </div>
    <div class="actions">
      <Button color="secondary">
        {{ t('components.library.Podcasts.button.cancel') }}
      </Button>
      <Button
        form="remote-search"
        type="submit"
      >
        <i class="bookmark icon" />
        {{ t('components.library.Podcasts.button.subscribe') }}
      </Button>
    </div>
  </Modal>

  </Layout>

</template>
