function getTagsValueRepr (val) {
  if (!val) {
    return ''
  }
  return val.slice().sort().join('\n')
}

function getContentValueRepr (val) {
  return val.text
}

export default {
  getConfigs () {
    const description = {
      id: 'description',
      type: 'content',
      required: true,
      label: this.$pgettext('*/*/*/Noun', 'Description'),
      getValue: (obj) => { return obj.description || { text: null, content_type: 'text/markdown' } },
      getValueRepr: getContentValueRepr
    }
    const cover = {
      id: 'cover',
      type: 'attachment',
      required: false,
      label: this.$pgettext('Content/*/*/Noun', 'Cover'),
      getValue: (obj) => {
        if (obj.cover) {
          return obj.cover.uuid
        } else {
          return null
        }
      }
    }
    return {
      artist: {
        fields: [
          {
            id: 'name',
            type: 'text',
            required: true,
            label: this.$pgettext('*/*/*/Noun', 'Name'),
            getValue: (obj) => { return obj.name }
          },
          description,
          cover,
          {
            id: 'tags',
            type: 'tags',
            required: true,
            label: this.$pgettext('*/*/*/Noun', 'Tags'),
            getValue: (obj) => { return obj.tags },
            getValueRepr: getTagsValueRepr
          }
        ]
      },
      album: {
        fields: [
          {
            id: 'title',
            type: 'text',
            required: true,
            label: this.$pgettext('*/*/*/Noun', 'Title'),
            getValue: (obj) => { return obj.title }
          },
          description,
          {
            id: 'release_date',
            type: 'text',
            required: false,
            label: this.$pgettext('Content/*/*/Noun', 'Release date'),
            getValue: (obj) => { return obj.release_date }
          },
          cover,
          {
            id: 'tags',
            type: 'tags',
            required: true,
            label: this.$pgettext('*/*/*/Noun', 'Tags'),
            getValue: (obj) => { return obj.tags },
            getValueRepr: getTagsValueRepr
          }
        ]
      },
      track: {
        fields: [
          {
            id: 'title',
            type: 'text',
            required: true,
            label: this.$pgettext('*/*/*/Noun', 'Title'),
            getValue: (obj) => { return obj.title }
          },
          description,
          cover,
          {
            id: 'position',
            type: 'text',
            inputType: 'number',
            required: false,
            label: this.$pgettext('*/*/*/Short, Noun', 'Position'),
            getValue: (obj) => { return obj.position }
          },
          {
            id: 'copyright',
            type: 'text',
            required: false,
            label: this.$pgettext('Content/Track/*/Noun', 'Copyright'),
            getValue: (obj) => { return obj.copyright }
          },
          {
            id: 'license',
            type: 'license',
            required: false,
            label: this.$pgettext('Content/*/*/Noun', 'License'),
            getValue: (obj) => { return obj.license }
          },
          {
            id: 'tags',
            type: 'tags',
            required: true,
            label: this.$pgettext('*/*/*/Noun', 'Tags'),
            getValue: (obj) => { return obj.tags },
            getValueRepr: getTagsValueRepr
          }
        ]
      }
    }
  },

  getConfig () {
    return this.configs[this.objectType]
  },
  getFieldConfig (configs, type, fieldId) {
    const c = configs[type]
    return c.fields.filter((f) => {
      return f.id === fieldId
    })[0]
  },
  getCurrentState () {
    const self = this
    const s = {}
    this.config.fields.forEach(f => {
      s[f.id] = { value: f.getValue(self.object) }
    })
    return s
  },
  getCurrentStateForObj (obj, config) {
    const s = {}
    config.fields.forEach(f => {
      s[f.id] = { value: f.getValue(obj) }
    })
    return s
  },

  getCanDelete () {
    if (this.obj.is_applied || this.obj.is_approved) {
      return false
    }
    if (!this.$store.state.auth.authenticated) {
      return false
    }
    return (
      this.obj.created_by.full_username === this.$store.state.auth.fullUsername ||
      this.$store.state.auth.availablePermissions.library
    )
  },
  getCanApprove () {
    if (this.obj.is_applied) {
      return false
    }
    if (!this.$store.state.auth.authenticated) {
      return false
    }
    return this.$store.state.auth.availablePermissions.library
  },
  getCanEdit () {
    if (!this.$store.state.auth.authenticated) {
      return false
    }

    const libraryPermission = this.$store.state.auth.availablePermissions.library
    const objData = this.object || {}
    let isOwner = false
    if (objData.attributed_to) {
      isOwner = this.$store.state.auth.fullUsername === objData.attributed_to.full_username
    }
    return libraryPermission || isOwner
  }

}