Add base api

api/_project.py

@@ -0,0 +1,28 @@
+import psycopg as pg
+from _connection import _conn_dict as conn
+
+def have_project(name: str) -> bool:
+    with pg.connect(conninfo="dbname=postgres", autocommit=True) as conn:
+        with conn.cursor() as cur:
+            cur.execute(f"select * from pg_database where datname = '{name}'")
+            return cur.rowcount > 0
+
+def create_project(name: str) -> None:
+    with pg.connect(conninfo="dbname=postgres", autocommit=True) as conn:
+        with conn.cursor() as cur:
+            cur.execute(f"create database {name} with template = project")
+
+def delete_project(name: str) -> None:
+    with pg.connect(conninfo="dbname=postgres", autocommit=True) as conn:
+        with conn.cursor() as cur:
+            cur.execute(f"drop database {name}")
+
+def open_project(name: str) -> None:
+    conn[name] = pg.connect(conninfo=f"dbname={name}", autocommit=True)
+
+def is_project_open(name: str) -> bool:
+    return name in conn
+
+def close_project(name: str) -> None:
+    conn[name].close()
+    del conn[name]