✨ Improve UI for fastapi dev and fastapi run (#95)

Co-authored-by: Sebastián Ramírez <tiangolo@gmail.com>

Author: patrick91

README.md

@@ -32,46 +32,33 @@ To run your FastAPI app for development, you can use the `fastapi dev` command:
 
 ```console
 $ fastapi dev main.py
-INFO     Using path main.py
-INFO     Resolved absolute path /home/user/code/awesomeapp/main.py
-INFO     Searching for package file structure from directories with __init__.py files
-INFO     Importing from /home/user/code/awesomeapp
-
- ╭─ Python module file ─╮
- │                      │
- │  🐍 main.py          │
- │                      │
- ╰──────────────────────╯
-
-INFO     Importing module main
-INFO     Found importable FastAPI app
-
- ╭─ Importable FastAPI app ─╮
- │                          │
- │  from main import app    │
- │                          │
- ╰──────────────────────────╯
-
-INFO     Using import string main:app
-
- ╭────────── FastAPI CLI - Development mode ───────────╮
- │                                                     │
- │  Serving at: http://127.0.0.1:8000                  │
- │                                                     │
- │  API docs: http://127.0.0.1:8000/docs               │
- │                                                     │
- │  Running in development mode, for production use:   │
- │                                                     │
- │  fastapi run                                        │
- │                                                     │
- ╰─────────────────────────────────────────────────────╯
-
-INFO:     Will watch for changes in these directories: ['/home/user/code/awesomeapp']
-INFO:     Uvicorn running on http://127.0.0.1:8000 (Press CTRL+C to quit)
-INFO:     Started reloader process [56345] using WatchFiles
-INFO:     Started server process [56352]
-INFO:     Waiting for application startup.
-INFO:     Application startup complete.
+
+   FastAPI   Starting development server 🚀
+
+             Searching for package file structure from directories with __init__.py files
+             Importing from /home/user/code/awesomeapp
+
+    module   🐍 main.py
+
+      code   Importing the FastAPI app object from the module with the following code:
+
+             from main import app
+
+       app   Using import string: main:app
+
+    server   Server started at http://127.0.0.1:8000
+    server   Documentation at http://127.0.0.1:8000/docs
+
+       tip   Running in development mode, for production use: fastapi run
+
+             Logs:
+
+      INFO   Will watch for changes in these directories: ['/home/user/code/awesomeapp']
+      INFO   Uvicorn running on http://127.0.0.1:8000 (Press CTRL+C to quit)
+      INFO   Started reloader process [4106097] using WatchFiles
+      INFO   Started server process [4106120]
+      INFO   Waiting for application startup.
+      INFO   Application startup complete.
 ```
 
 </div>

pyproject.toml

@@ -34,6 +34,7 @@ classifiers = [
 dependencies = [
     "typer >= 0.12.3",
     "uvicorn[standard] >= 0.15.0",
+    "rich-toolkit >= 0.11.1"
 ]
 
 [project.optional-dependencies]

src/fastapi_cli/cli.py

@@ -1,23 +1,23 @@
-from logging import getLogger
+import logging
 from pathlib import Path
-from typing import Any, Union
+from typing import Any, List, Union
 
 import typer
 from rich import print
-from rich.padding import Padding
-from rich.panel import Panel
+from rich.tree import Tree
 from typing_extensions import Annotated
 
-from fastapi_cli.discover import get_import_string
+from fastapi_cli.discover import get_import_data
 from fastapi_cli.exceptions import FastAPICLIException
 
 from . import __version__
 from .logging import setup_logging
+from .utils.cli import get_rich_toolkit, get_uvicorn_log_config
 
 app = typer.Typer(rich_markup_mode="rich")
 
-setup_logging()
-logger = getLogger(__name__)
+logger = logging.getLogger(__name__)
+
 
 try:
     import uvicorn
@@ -39,6 +39,7 @@ def callback(
             "--version", help="Show the version and exit.", callback=version_callback
         ),
     ] = None,
+    verbose: bool = typer.Option(False, help="Enable verbose output"),
 ) -> None:
     """
     FastAPI CLI - The [bold]fastapi[/bold] command line app. 😎
@@ -48,6 +49,31 @@ def callback(
     Read more in the docs: [link=https://fastapi.tiangolo.com/fastapi-cli/]https://fastapi.tiangolo.com/fastapi-cli/[/link].
     """
 
+    log_level = logging.DEBUG if verbose else logging.INFO
+
+    setup_logging(level=log_level)
+
+
+def _get_module_tree(module_paths: List[Path]) -> Tree:
+    root = module_paths[0]
+    name = f"🐍 {root.name}" if root.is_file() else f"📁 {root.name}"
+
+    root_tree = Tree(name)
+
+    if root.is_dir():
+        root_tree.add("[dim]🐍 __init__.py[/dim]")
+
+    tree = root_tree
+    for sub_path in module_paths[1:]:
+        sub_name = (
+            f"🐍 {sub_path.name}" if sub_path.is_file() else f"📁 {sub_path.name}"
+        )
+        tree = tree.add(sub_name)
+        if sub_path.is_dir():
+            tree.add("[dim]🐍 __init__.py[/dim]")
+
+    return root_tree
+
 
 def _run(
     path: Union[Path, None] = None,
@@ -61,45 +87,88 @@ def _run(
     app: Union[str, None] = None,
     proxy_headers: bool = False,
 ) -> None:
-    try:
-        use_uvicorn_app = get_import_string(path=path, app_name=app)
-    except FastAPICLIException as e:
-        logger.error(str(e))
-        raise typer.Exit(code=1) from None
-    url = f"http://{host}:{port}"
-    url_docs = f"{url}/docs"
-    serving_str = f"[dim]Serving at:[/dim] [link={url}]{url}[/link]\n\n[dim]API docs:[/dim] [link={url_docs}]{url_docs}[/link]"
-
-    if command == "dev":
-        panel = Panel(
-            f"{serving_str}\n\n[dim]Running in development mode, for production use:[/dim] \n\n[b]fastapi run[/b]",
-            title="FastAPI CLI - Development mode",
-            expand=False,
-            padding=(1, 2),
-            style="black on yellow",
+    with get_rich_toolkit() as toolkit:
+        server_type = "development" if command == "dev" else "production"
+
+        toolkit.print_title(f"Starting {server_type} server 🚀", tag="FastAPI")
+        toolkit.print_line()
+
+        toolkit.print(
+            "Searching for package file structure from directories with [blue]__init__.py[/blue] files"
+        )
+
+        try:
+            import_data = get_import_data(path=path, app_name=app)
+        except FastAPICLIException as e:
+            toolkit.print_line()
+            toolkit.print(f"[error]{e}")
+            raise typer.Exit(code=1) from None
+
+        logger.debug(f"Importing from {import_data.module_data.extra_sys_path}")
+        logger.debug(f"Importing module {import_data.module_data.module_import_str}")
+
+        module_data = import_data.module_data
+        import_string = import_data.import_string
+
+        toolkit.print(f"Importing from {module_data.extra_sys_path}")
+        toolkit.print_line()
+
+        root_tree = _get_module_tree(module_data.module_paths)
+
+        toolkit.print(root_tree, tag="module")
+        toolkit.print_line()
+
+        toolkit.print(
+            "Importing the FastAPI app object from the module with the following code:",
+            tag="code",
         )
-    else:
-        panel = Panel(
-            f"{serving_str}\n\n[dim]Running in production mode, for development use:[/dim] \n\n[b]fastapi dev[/b]",
-            title="FastAPI CLI - Production mode",
-            expand=False,
-            padding=(1, 2),
-            style="green",
+        toolkit.print_line()
+        toolkit.print(
+            f"[underline]from [bold]{module_data.module_import_str}[/bold] import [bold]{import_data.app_name}[/bold]"
+        )
+        toolkit.print_line()
+
+        toolkit.print(
+            f"Using import string: [blue]{import_string}[/]",
+            tag="app",
+        )
+
+        url = f"http://{host}:{port}"
+        url_docs = f"{url}/docs"
+
+        toolkit.print_line()
+        toolkit.print(
+            f"Server started at [link={url}]{url}[/]",
+            f"Documentation at [link={url_docs}]{url_docs}[/]",
+            tag="server",
+        )
+
+        if command == "dev":
+            toolkit.print_line()
+            toolkit.print(
+                "Running in development mode, for production use: [bold]fastapi run[/]",
+                tag="tip",
+            )
+
+        if not uvicorn:
+            raise FastAPICLIException(
+                "Could not import Uvicorn, try running 'pip install uvicorn'"
+            ) from None
+
+        toolkit.print_line()
+        toolkit.print("Logs:")
+        toolkit.print_line()
+
+        uvicorn.run(
+            app=import_string,
+            host=host,
+            port=port,
+            reload=reload,
+            workers=workers,
+            root_path=root_path,
+            proxy_headers=proxy_headers,
+            log_config=get_uvicorn_log_config(),
         )
-    print(Padding(panel, 1))
-    if not uvicorn:
-        raise FastAPICLIException(
-            "Could not import Uvicorn, try running 'pip install uvicorn'"
-        ) from None
-    uvicorn.run(
-        app=use_uvicorn_app,
-        host=host,
-        port=port,
-        reload=reload,
-        workers=workers,
-        root_path=root_path,
-        proxy_headers=proxy_headers,
-    )
 
 
 @app.command()