<template>
  <div>
    <!-- Modal for adding new shows -->
    <b-modal
      ref="modalAddShow"
      title="Create a new show"
      size="lg"
      @ok="addShow"
    >
      <b-container fluid>
        <b-row>
          <b-col cols="3">
            Name of the show:
          </b-col>
          <b-col cols="9">
            <b-form-input
              v-model="newShow.name"
              type="text"
              placeholder="Enter a title for this new show"
            />
          </b-col>
          <b-col cols="3" />
          <b-col cols="9">
            <small class="slug">Slug: {{ temporarySlug }}</small>
          </b-col>
        </b-row>
        <br>

        <b-row>
          <b-col cols="3">
            Short description:
          </b-col>
          <b-col cols="9">
            <b-form-input
              v-model="newShow.short_description"
              type="text"
              placeholder="Enter a short description for this show"
            />
          </b-col>
        </b-row>
        <br>

        <b-row>
          <b-col cols="3">
            Show type:
          </b-col>
          <b-col cols="9">
            <div v-if="!loaded.types">
              <img
                src="../assets/radio.gif"
                alt="loading data"
              >
            </div>
            <div v-else>
              <b-form-select
                v-model="newShow.type"
                :options="showTypeSelector"
              />
            </div>
          </b-col>
        </b-row>

        <b-row>
          <b-col cols="3">
            Funding category:
          </b-col>
          <b-col cols="9">
            <div v-if="!loaded.fundingcategories">
              <img
                src="../assets/radio.gif"
                alt="loading data"
              >
            </div>
            <div v-else>
              <b-form-select
                v-model="newShow.fundingcategory"
                :options="showFundingCategorySelector"
              />
            </div>
          </b-col>
        </b-row>
      </b-container>
    </b-modal>
  </div>
</template>

<script>
import axios from 'axios'
import slugify from '../mixins/slugify.js'
import showUpdates from '../mixins/showUpdates.js'

export default {
  mixins: [ slugify, showUpdates ],
  data () {
    return {
      newShow: {
        name: "",
        slug: "",
        short_description: "",
        type: 0,
        fundingcategory: 0,
        category: [],
        hosts: [],
        owners: [],
        language: [],
        topic: [],
        musicfocus: [],
      },
      show: null,
      loaded: {
        types: false,
        fundingcategories: false,
        users: false,
      },
      types: [],
      fundingcategories: [],
      users: [],
    }
  },

  computed: {
    temporarySlug: function () {
      return this.slugify(this.newShow.name)
    },

    showTypeSelector: function () {
      let options = []
      for (let i in this.types) {
        options.push({
          value: this.types[i].id,
          text: this.types[i].type
        })
      }
      return options
    },

    showFundingCategorySelector: function () {
      let options = []
      for (let i in this.fundingcategories) {
        options.push({
          value: this.fundingcategories[i].id,
          text: this.fundingcategories[i].abbrev + ' (' + this.fundingcategories[i].fundingcategory + ')'
        })
      }
      return options
    },
  },

  methods: {
    // create a new show and POST it to the steering API
    // new shows have to at least contain a name, a slug and a short-description.
    // also a valide show type and funding category have to be choosen.
    // for all other categories we can use an empty array and let the user fill
    // it out through the existing show manager modals, after the show is created
    addShow (event) {
      // prevent the modal from closing automatically on click
      event.preventDefault()

      // only try to add a new show if name and short description are filled out
      if (this.newShow.name.trim() === '' || this.newShow.short_description.trim() === '' ) {
        // TODO: make this nicer UI-wise (red text annotations next to input fields instead of simple alert)
        alert('Please provide at least a title and a short description for this show.')
        return
      }
      // also the type and funding category have to be set
      if (this.types.findIndex(type => type.id === this.newShow.type) === -1) {
        // TODO: make this nicer UI-wise (red text annotations next to input fields instead of simple alert)
        alert('Please choose a type for this show.')
        return
      }
      if (this.fundingcategories.findIndex(cat => cat.id === this.newShow.fundingcategory) === -1) {
        // TODO: make this nicer UI-wise (red text annotations next to input fields instead of simple alert)
        alert('Please choose a funding category for this show.')
        return
      }

      // as the slug is a computed property we have to assign it to the new show's slug property
      this.newShow.slug = this.temporarySlug

      // ready to go, let's POST this new show
      let uri = process.env.VUE_APP_API_STEERING_SHOWS
      axios.post(uri, this.newShow, {
        withCredentials: true,
        headers: { 'Authorization': 'Bearer ' + this.$parent.$parent.user.access_token }
      }).then(response => {
        // everything was fine, we can close the modal now
        this.$refs.modalAddShow.hide()
        this.$parent.loadAndSwitch(response.data.id)
      }).catch(error => {
        this.$log.error(error.response.status + ' ' + error.response.statusText)
        this.$log.error(error.response)
        alert('Error: could not add new show. See console for details.')
        // and we leave the modal open, so no call to its .hide function here
      })
    },

    // clear and fetch modal data and open the modal to add new shows
    showModalAddShow () {
      this.newShow.name = ''
      this.newShow.slug = ''
      this.newShow.short_description = ''
      this.loadTypes()
      this.loadFundingCategories()
      this.$refs.modalAddShow.show()
    },
  }
}
</script>

<style scoped>
.slug {
  color: gray;
}
</style>