Add uvicorn server; make in-memory DB default

requirements/dev.txt

@@ -1,4 +1,4 @@
--r common.txt
+-r srv.txt
 coverage
 sqlalchemy-stubs
 aiosqlite

requirements/srv.txt

@@ -0,0 +1,2 @@
+-r common.txt
+Uvicorn[standard]

setup.cfg

@@ -29,7 +29,10 @@ install_requires =
     Alembic
 
 [options.extras_require]
+srv =
+    Uvicorn[standard]
 dev =
+    Uvicorn[standard]
     coverage
     sqlalchemy-stubs
     aiosqlite

src/compub/__main__.py

@@ -0,0 +1,30 @@
+from argparse import ArgumentParser, SUPPRESS
+from pathlib import Path
+from typing import Any, Sequence
+
+import uvicorn
+
+from .settings import PROGRAM_NAME, CONFIG_FILE_PATH_PARAM, DEFAULT_CONFIG_FILE_PATHS, init, settings
+
+
+def parse_cli(args: Sequence[str] = None) -> dict[str, Any]:
+    parser = ArgumentParser(PROGRAM_NAME)
+    parser.add_argument(
+        '-c', f'--{CONFIG_FILE_PATH_PARAM}',
+        type=Path,
+        metavar='PATH',
+        default=SUPPRESS,
+        help=f"Paths to config file that will take precedence over all others; "
+             f"the following {len(DEFAULT_CONFIG_FILE_PATHS)} paths are always checked first (in that order):"
+             f" {','.join(str(p) for p in DEFAULT_CONFIG_FILE_PATHS)}"
+    )
+    return vars(parser.parse_args(args))
+
+
+def main():
+    init(**parse_cli())
+    uvicorn.run(f'{PROGRAM_NAME}.routes:app', **settings.server.dict())
+
+
+if __name__ == '__main__':
+    main()

src/compub/settings.py

@@ -81,7 +81,7 @@ class ServerSettings(BaseModel):
 
 
 class Settings(AbstractBaseSettings):
-    db_uri: DBUri | None = None
+    db_uri: DBUri = 'sqlite+aiosqlite:///:memory:'
     server: ServerSettings = ServerSettings()
     log_config: dict | Path | None = None