Use managed PIDs as primary source for DOIs

* use DOIs defined in the metadata only as a fallback if the record has
  no managed PIDs

invenio_theme_tuw/templates/semantic-ui/invenio_app_rdm/records/detail.html

@@ -18,7 +18,7 @@
 {%- set metadata = record.metadata %}
 
 {%- block tuw_metadata %}
-  {%- set schemaorg_metadata = tuw_create_schemaorg_metadata(metadata) %}
+  {%- set schemaorg_metadata = tuw_create_schemaorg_metadata(record) %}
   {%- if schemaorg_metadata %}
   <script type="application/ld+json" nonce="{{ csp_nonce() }}">
     {{ schemaorg_metadata|safe }}

invenio_theme_tuw/templates/semantic-ui/invenio_theme_tuw/details/side_bar.html

@@ -28,7 +28,14 @@
       <div class="one column row">
         <div class="column left aligned">
           <p class="text-muted font-small">
-          {%- set doi = metadata.identifiers|tuw_doi_identifier -%}
+          {%- set doi = None -%}
+          {%- if record and record.pids and record.pids.doi -%}
+            {%- set doi = record.pids.doi.identifier -%}
+          {%- endif -%}
+          {%- if not doi -%}
+            {%- set doi = metadata.identifiers|tuw_doi_identifier -%}
+          {%- endif -%}
+
           {%- if doi -%}
             DOI: <a href="https://doi.org/{{ doi }}">{{ doi }}</a>
           {%- else -%}

invenio_theme_tuw/views.py

@@ -126,11 +126,17 @@ def create_blueprint(app):
         return text
 
     @blueprint.app_template_global("tuw_create_schemaorg_metadata")
-    def tuw_create_schemaorg_metadata(record_metadata):
+    def tuw_create_schemaorg_metadata(record):
         """Create schema.org metadata to include in a <script> tag."""
-        doi = tuw_doi_identifier(record_metadata.get("identifiers"))
         metadata = None
 
+        # get the DOI from the managed PIDs, or from the metadata as fallback
+        rec_pids = record.get("pids", {})
+        if "doi" in rec_pids:
+            doi = rec_pids["doi"].get("identifier")
+        else:
+            doi = tuw_doi_identifier(record.metadata.get("identifiers"))
+
         if doi is not None:
             doi_url = (
                 doi if doi.startswith("https://") else ("https://doi.org/%s" % doi)