Huge refactor to api and add batch api

api/s1_title.py

@@ -1,18 +1,23 @@
-from psycopg.rows import dict_row
 from .operation import *
-from .connection import g_conn_dict as conn
-from .change_set import ChangeSet
 
-def get_title(name: str) -> str:
-    with conn[name].cursor(row_factory=dict_row) as cur:
-        cur.execute(f"select * from title")
-        return cur.fetchone()['value']
 
-def set_title(name: str, value: str) -> ChangeSet:
-    old = get_title(name)
+def get_title_schema(name: str) -> dict[str, dict[str, Any]]:
+    return {'value': {'type': 'float', 'optional': False, 'readonly': False}}
 
-    sql = f"update title set value = '{value}'"
-    undo = f"update title set value = ''{old}''"
-    write(name, sql)
-    add_operation(name, sql.replace("'", "''"), undo, 'set_title', API_UPDATE, 'title', '')
-    return get_current_change_set(name)
+
+def get_title(name: str) -> dict[str, Any]:
+    title = read(name, 'select * from title')
+    return { 'value': title['value'] }
+
+
+def set_title(name: str, cs: ChangeSet) -> ChangeSet:
+    new = cs.operations[0]['value']
+    old = get_title(name)['value']
+
+    redo_sql = f"update title set value = '{new}';"
+    undo_sql = f"update title set value = '{old}';"
+
+    redo_cs = g_update_prefix | { 'type': 'title', 'value': new }
+    undo_cs = g_update_prefix | { 'type': 'title', 'value': old }
+
+    return execute_command(name, redo_sql, undo_sql, redo_cs, undo_cs)