Close #5839 Allow importing External News from news.arizona,edu

modules/custom/az_news/az_news_feeds/config/install/migrate_plus.migration.az_news_feed_stories.yml

@@ -18,6 +18,9 @@ source:
   ids:
     uuid:
       type: uuid
+  constants:
+    read_more_prefix: 'Read more at '
+    read_more_default_publisher: 'University of Arizona News'
   fields:
     -
       name: uuid
@@ -55,17 +58,56 @@ source:
       name: image
       label: Image
       selector: /story/img-large
+    -
+      name: byline
+      label: Byline
+      selector: /story/byline
+    -
+      name: byline-affiliation
+      label: 'Byline Affiliation'
+      selector: /story/byline-affiliation
 process:
   title: title
   field_az_published/value:
     plugin: format_date
     from_format: 'Y-m-d\TH:i:sP'
     to_format: Y-m-d
     source: date-of-publication
-  field_az_link/uri: canonical-url
-  field_az_link/title:
-    plugin: default_value
-    default_value: 'Read more at University of Arizona News'
+  _default_byline:
+    -
+      plugin: callback
+      callable: strpos
+      unpack_source: true
+      source:
+        - canonical-url
+        - 'https://news.arizona.edu/'
+    -
+      plugin: callback
+      callable: strpos
+      unpack_source: true
+      source:
+        - canonical-url
+        - 'ua-news-redesign.pantheonsite.io/'
+    -
+      plugin: skip_on_empty
+      method: process
+    -
+      plugin: concat
+      source:
+        - constants/read_more_prefix
+        - byline-affiliation
+  _byline_from_link_title:
+    -
+      plugin: skip_on_empty
+      source: byline-affiliation
+      method: process
+  field_az_link/0/uri: canonical-url
+  field_az_link/0/title:
+    -
+      plugin: null_coalesce
+      source:
+        - '@_default_byline'
+        - '@_byline_from_link_title'
   field_az_summary/value:
     plugin: callback
     callable: trim