Rename policy to document

Signed-off-by: Sacha Al Himdani <sacha@getprobo.com>

pkg/coredata/document_order_field.go

@@ -0,0 +1,41 @@
+// Copyright (c) 2025 Probo Inc <hello@getprobo.com>.
+//
+// Permission to use, copy, modify, and/or distribute this software for any
+// purpose with or without fee is hereby granted, provided that the above
+// copyright notice and this permission notice appear in all copies.
+//
+// THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH
+// REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
+// AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT,
+// INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
+// LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR
+// OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
+// PERFORMANCE OF THIS SOFTWARE.
+
+package coredata
+
+type (
+	DocumentOrderField string
+)
+
+const (
+	DocumentOrderFieldCreatedAt DocumentOrderField = "CREATED_AT"
+	DocumentOrderFieldTitle     DocumentOrderField = "TITLE"
+)
+
+func (p DocumentOrderField) Column() string {
+	return string(p)
+}
+
+func (p DocumentOrderField) String() string {
+	return string(p)
+}
+
+func (p DocumentOrderField) MarshalText() ([]byte, error) {
+	return []byte(p.String()), nil
+}
+
+func (p *DocumentOrderField) UnmarshalText(text []byte) error {
+	*p = DocumentOrderField(text)
+	return nil
+}