Adds migration configs.

config/install/migrate_plus.migration.cdesai_profile_pages_image_files.yml

@@ -0,0 +1,73 @@
+# Migration configuration for importing image files.
+id: cdesai_profile_pages_image_files
+label: Import Profile Page Files
+migration_group: CDESAI_MEDIA
+
+source:
+  # The custom CSV source plugin will fetch the source path from configs.
+  # Upload source files at /admin/config/development/cdesai/migrate.
+  plugin: 'cdesai_migrate_csv'
+  source_config_key: cdesai_migrate_profile_pages_source
+
+  delimiter: ','
+  enclosure: '"'
+  header_offset: 0
+
+  constants:
+    DRUPAL_FILE_DIRECTORY: 'public://images/profile/'
+
+  ids:
+    - page
+
+process:
+  uid:
+    plugin: default_value
+    default_value: 1
+
+  pseudo_destination_filename:
+    # Skips a row if has_images property is set to FALSE.
+    -
+      plugin: skip_on_value
+      equals: true
+      source: has_images
+      value: 'FALSE'
+      method: row
+    -
+      plugin: skip_on_empty
+      method: row
+      message: 'Cannot import image file with an empty url.'
+    -
+      plugin: callback
+      callable: basename
+      source: image_url
+  pseudo_destination_path:
+    -
+      plugin: concat
+      source:
+        - constants/DRUPAL_FILE_DIRECTORY
+        - '@pseudo_destination_filename'
+  uri:
+    -
+      plugin: skip_on_empty
+      method: process
+      source: image_url
+    -
+      plugin: file_copy
+      source:
+        - image_url
+        - '@pseudo_destination_path'
+      file_exists: rename
+      move: false
+
+destination:
+  plugin: 'entity:file'
+
+
+# make sure these migration execute before running current migration
+migration_dependencies: null
+
+# use forced module dependency so uninstall/reinstall works properly
+dependencies:
+  enforced:
+    module:
+      - cdesai_migrate