Support to list project

api/project.py

@@ -1,10 +1,19 @@
 import psycopg as pg
+from psycopg.rows import dict_row
 from .connection import g_conn_dict as conn
 
 # no undo/redo
 
 _project_open_count: dict[str, int] = {}
 
+def list_project() -> list[str]:
+    ps = []
+    with pg.connect(conninfo="dbname=postgres host=127.0.0.1", autocommit=True) as conn:
+        with conn.cursor(row_factory=dict_row) as cur:
+            for p in cur.execute(f"select datname from pg_database where datname <> 'postgres' and datname <> 'template0' and datname <> 'template1' and datname <> 'project'"):
+                ps.append(p['datname'])
+    return ps
+
 def have_project(name: str) -> bool:
     with pg.connect(conninfo="dbname=postgres host=127.0.0.1", autocommit=True) as conn:
         with conn.cursor() as cur: