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-rw-r--r--migrations/auth/20230907_04_3LnrG-refactor-create-group-resources-table.py58
-rw-r--r--tests/unit/auth/test_migrations_create_tables.py4
2 files changed, 61 insertions, 1 deletions
diff --git a/migrations/auth/20230907_04_3LnrG-refactor-create-group-resources-table.py b/migrations/auth/20230907_04_3LnrG-refactor-create-group-resources-table.py
new file mode 100644
index 0000000..a26834a
--- /dev/null
+++ b/migrations/auth/20230907_04_3LnrG-refactor-create-group-resources-table.py
@@ -0,0 +1,58 @@
+"""
+refactor: create 'group_resources' table.
+"""
+
+import uuid
+import random
+import string
+
+import sqlite3
+from yoyo import step
+
+__depends__ = {'20230907_03_BwAmf-refactor-drop-group-id-from-resources-table'}
+
+def randstr(length: int = 5):
+    """Generate random string."""
+    return "".join(random.choices(
+        string.ascii_letters + string.digits, k=length))
+
+def create_and_link_resources_for_existing_groups(conn):
+    conn.row_factory = sqlite3.Row
+    cursor = conn.cursor()
+    cursor.execute("SELECT group_id, group_name FROM groups")
+    resources = tuple({
+        "group_id": row["group_id"],
+        "resource_id": str(uuid.uuid4()),
+        "resource_name": f"{randstr(10)}: {row['group_name']}",
+        "resource_category_id": "1e0f70ee-add5-4358-8c6c-43de77fa4cce"
+    } for row in cursor.fetchall())
+    cursor.executemany(
+        "INSERT INTO "
+        "resources(resource_id, resource_name, resource_category_id) "
+        "VALUES (:resource_id, :resource_name, :resource_category_id)",
+        resources)
+    cursor.executemany(
+        "INSERT INTO group_resources(resource_id, group_id) "
+        "VALUES (:resource_id, :group_id)",
+        resources)
+
+steps = [
+    step(
+        """
+        CREATE TABLE IF NOT EXISTS group_resources(
+        -- Links groups to the resources of type 'group' that control access to
+        -- each group
+        resource_id TEXT NOT NULL,
+        group_id TEXT NOT NULL,
+        PRIMARY KEY(resource_id, group_id),
+        FOREIGN KEY (resource_id)
+          REFERENCES resources(resource_id)
+          ON UPDATE CASCADE ON DELETE RESTRICT,
+        FOREIGN KEY (group_id)
+          REFERENCES groups(group_id)
+          ON UPDATE CASCADE ON DELETE RESTRICT
+        ) WITHOUT ROWID
+        """,
+        "DROP TABLE IF EXISTS group_resources"),
+    step(create_and_link_resources_for_existing_groups)
+]
diff --git a/tests/unit/auth/test_migrations_create_tables.py b/tests/unit/auth/test_migrations_create_tables.py
index eb0e161..8b0f36e 100644
--- a/tests/unit/auth/test_migrations_create_tables.py
+++ b/tests/unit/auth/test_migrations_create_tables.py
@@ -41,7 +41,9 @@ migrations_and_tables = (
     ("20230410_01_8mwaf-create-linked-mrna-data-table.py", "linked_mrna_data"),
     ("20230410_02_WZqSf-create-mrna-resources-table.py", "mrna_resources"),
     ("20230907_01_pjnxz-refactor-add-resource-ownership-table.py",
-     "resource_ownership"))
+     "resource_ownership"),
+    ("20230907_04_3LnrG-refactor-create-group-resources-table.py",
+     "group_resources"))
 
 @pytest.mark.unit_test
 @pytest.mark.parametrize("migration_file,the_table", migrations_and_tables)