const ScopeSelector = {
  props: [
    'showAll',
    'userDefault',
    'originalScope',
    'initialScope',
    'onScopeChange'
  ],
  data () {
    return {
      currentScope: this.initialScope
    }
  },
  computed: {
    showNothing () {
      return !this.showPublic && !this.showUnlisted && !this.showPrivate && !this.showDirect
    },
    showPublic () {
      return this.originalScope !== 'direct' && this.shouldShow('public')
    },
    showUnlisted () {
      return this.originalScope !== 'direct' && this.shouldShow('unlisted')
    },
    showPrivate () {
      return this.originalScope !== 'direct' && this.shouldShow('private')
    },
    showDirect () {
      return this.shouldShow('direct')
    },
    css () {
      return {
        public: {selected: this.currentScope === 'public'},
        unlisted: {selected: this.currentScope === 'unlisted'},
        private: {selected: this.currentScope === 'private'},
        direct: {selected: this.currentScope === 'direct'}
      }
    }
  },
  methods: {
    shouldShow (scope) {
      return this.showAll ||
        this.currentScope === scope ||
        this.originalScope === scope ||
        this.userDefault === scope ||
        'direct' === scope
    },
    changeVis (scope) {
      this.currentScope = scope
      this.onScopeChange && this.onScopeChange(scope)
    }
  }
}

export default ScopeSelector