feat(api): Add migration for WorkflowDraftVariableFile

api/migrations/versions/2025_08_12_1601-76db8b6ed8f1_add_workflowdraftvariablefile.py

@@ -0,0 +1,92 @@
+"""add WorkflowDraftVariableFile
+
+Revision ID: 76db8b6ed8f1
+Revises: 532b3f888abf
+Create Date: 2025-08-12 16:01:40.318520
+
+"""
+
+from alembic import op
+import models as models
+import sqlalchemy as sa
+
+
+# revision identifiers, used by Alembic.
+revision = "76db8b6ed8f1"
+down_revision = "fa8b0fa6f407"
+branch_labels = None
+depends_on = None
+
+
+def upgrade():
+    # ### commands auto generated by Alembic - please adjust! ###
+    op.create_table(
+        "workflow_draft_variable_files",
+        sa.Column("id", models.types.StringUUID(), server_default=sa.text("uuidv7()"), nullable=False),
+        sa.Column("created_at", sa.DateTime(), server_default=sa.text("CURRENT_TIMESTAMP"), nullable=False),
+
+        sa.Column(
+            "tenant_id",
+            models.types.StringUUID(),
+            nullable=False,
+            comment="The application to which the WorkflowDraftVariableFile belongs, referencing App.id",
+        ),
+        sa.Column(
+            "app_id",
+            models.types.StringUUID(),
+            nullable=False,
+            comment="The application to which the WorkflowDraftVariableFile belongs, referencing App.id",
+        ),
+        sa.Column(
+            "user_id",
+            models.types.StringUUID(),
+            nullable=False,
+            comment="The owner to of the WorkflowDraftVariableFile, referencing Account.id",
+        ),
+        sa.Column(
+            "upload_file_id",
+            models.types.StringUUID(),
+            nullable=False,
+            comment="Reference to UploadFile containing the large variable data",
+        ),
+        sa.Column("size", sa.BigInteger(), nullable=False, comment="Size of the original variable content in bytes"),
+        sa.Column(
+            "length",
+            sa.Integer(),
+            nullable=True,
+            comment=(
+                "Length of the original variable content. For array and array-like types, this represents the "
+                "number of elements. For object types, it indicates the number of keys. For other types, "
+                "the value is NULL."
+            )
+        ),
+        sa.Column("value_type", sa.String(20), nullable=False),
+        sa.PrimaryKeyConstraint("id", name=op.f("workflow_draft_variable_files_pkey")),
+    )
+    with op.batch_alter_table("workflow_draft_variables", schema=None) as batch_op:
+        batch_op.add_column(
+            sa.Column(
+                "file_id",
+                models.types.StringUUID(),
+                nullable=True,
+                comment="Reference to WorkflowDraftVariableFile if variable is offloaded to external storage",
+            )
+            sa.sa.Column(
+                "is_default_value",
+                sa.Boolean,
+                nullable=False
+                server_default=sa.false(),
+            )
+        )
+        batch_op.create_index("workflow_draft_variable_file_id_idx", ["file_id"], unique=False)
+
+    # ### end Alembic commands ###
+
+
+def downgrade():
+    # ### commands auto generated by Alembic - please adjust! ###
+    with op.batch_alter_table("workflow_draft_variables", schema=None) as batch_op:
+        batch_op.drop_column("file_id")
+
+    op.drop_table("workflow_draft_variable_files")
+    # ### end Alembic commands ###