1 files changed, 84 insertions, 0 deletions
diff --git a/src/hocs/with_subscription/with_subscription.js b/src/hocs/with_subscription/with_subscription.js
new file mode 100644
index 00000000..679409cf
--- /dev/null
+++ b/src/hocs/with_subscription/with_subscription.js
@@ -0,0 +1,84 @@
+import Vue from 'vue'
+import isEmpty from 'lodash/isEmpty'
+import { getComponentProps } from '../../services/component_utils/component_utils'
+import './with_subscription.scss'
+
+const withSubscription = ({
+  fetch,                      // function to fetch entries and return a promise
+  select,                     // function to select data from store
+  childPropName = 'content',  // name of the prop to be passed into the wrapped component
+  additionalPropNames = []    // additional prop name list of the wrapper component
+}) => (WrappedComponent) => {
+  const originalProps = Object.keys(getComponentProps(WrappedComponent))
+  const props = originalProps.filter(v => v !== childPropName).concat(additionalPropNames)
+
+  return Vue.component('withSubscription', {
+    props: [
+      ...props,
+      'refresh'               // boolean saying to force-fetch data whenever created
+    ],
+    render (createElement) {
+      if (!this.error && !this.loading) {
+        const props = {
+          props: {
+            ...this.$props,
+            [childPropName]: this.fetchedData
+          },
+          on: this.$listeners,
+          scopedSlots: this.$scopedSlots
+        }
+        const children = Object.entries(this.$slots).map(([key, value]) => createElement('template', { slot: key }, value))
+        return (
+          <div class="with-subscription">
+            <WrappedComponent {...props}>
+              {children}
+            </WrappedComponent>
+          </div>
+        )
+      } else {
+        return (
+          <div class="with-subscription-loading">
+            {this.error
+              ? <a onClick={this.fetchData} class="alert error">{this.$t('general.generic_error')}</a>
+              : <i class="icon-spin3 animate-spin"/>
+            }
+          </div>
+        )
+      }
+    },
+    data () {
+      return {
+        loading: false,
+        error: false
+      }
+    },
+    computed: {
+      fetchedData () {
+        return select(this.$props, this.$store)
+      }
+    },
+    created () {
+      if (this.refresh || isEmpty(this.fetchedData)) {
+        this.fetchData()
+      }
+    },
+    methods: {
+      fetchData () {
+        if (!this.loading) {
+          this.loading = true
+          this.error = false
+          fetch(this.$props, this.$store)
+            .then(() => {
+              this.loading = false
+            })
+            .catch(() => {
+              this.error = true
+              this.loading = false
+            })
+        }
+      }
+    }
+  })
+}
+
+export default withSubscription