Prettier-print the generated config schema

pdm.lock

@@ -5,7 +5,7 @@
 groups = ["default", "all", "dev"]
 strategy = ["cross_platform"]
 lock_version = "4.4.1"
-content_hash = "sha256:828f8051de2c2a04cede8130abf86764edb38f0428cd1d52dd797bff43452afe"
+content_hash = "sha256:17fdf74bf4b2980c66c106cebcb936921e671e8adaeb2f2e95d95f255704aa38"
 
 [[package]]
 name = "aiocache"
@@ -80,6 +80,19 @@ files = [
     {file = "attrs-23.2.0.tar.gz", hash = "sha256:935dc3b529c262f6cf76e50877d35a4bd3c1de194fd41f47a2b7ae8f19971f30"},
 ]
 
+[[package]]
+name = "class-doc"
+version = "0.2.6"
+requires_python = ">=3.6,<4.0"
+summary = "Extract attributes docstrings defined in various ways"
+dependencies = [
+    "more-itertools>=5.0.0",
+]
+files = [
+    {file = "class-doc-0.2.6.tar.gz", hash = "sha256:f5e036ed9b7f6de528affdd9f038851910b342d4c1c1252983a55ff080b530e0"},
+    {file = "class_doc-0.2.6-py3-none-any.whl", hash = "sha256:e6f2cea2dfbe93f76dee25de13d70dc0d2269698e8b849f751d98dc894c52ea5"},
+]
+
 [[package]]
 name = "idna"
 version = "3.7"
@@ -90,6 +103,16 @@ files = [
     {file = "idna-3.7.tar.gz", hash = "sha256:028ff3aadf0609c1fd278d8ea3089299412a7a8b9bd005dd08b9f8285bcb5cfc"},
 ]
 
+[[package]]
+name = "more-itertools"
+version = "10.3.0"
+requires_python = ">=3.8"
+summary = "More routines for operating on iterables, beyond itertools"
+files = [
+    {file = "more-itertools-10.3.0.tar.gz", hash = "sha256:e5d93ef411224fbcef366a6e8ddc4c5781bc6359d43412a65dd5964e46111463"},
+    {file = "more_itertools-10.3.0-py3-none-any.whl", hash = "sha256:ea6a02e24a9161e51faad17a8782b92a0df82c12c1c8886fec7f0c3fa1a1b320"},
+]
+
 [[package]]
 name = "multidict"
 version = "6.0.5"

pyproject.toml

@@ -44,30 +44,10 @@ Issues = "https://git.00dani.me/00dani/mpd-now-playable/issues"
 [project.scripts]
 mpd-now-playable = 'mpd_now_playable.cli:main'
 
-[tool.pdm.scripts]
-start = {call = 'mpd_now_playable.cli:main'}
-lint = 'ruff check src/mpd_now_playable'
-typecheck = 'mypy -p mpd_now_playable'
-check = {composite = ['lint', 'typecheck'], keep_going = true}
-
-[tool.pdm.version]
-source = "scm"
-write_to = 'mpd_now_playable/__version__.py'
-write_template = "__version__ = '{}'"
-
 [build-system]
 requires = ["pdm-backend"]
 build-backend = "pdm.backend"
 
-[tool.pdm.build]
-excludes = ["**/.mypy_cache"]
-
-[tool.pdm.dev-dependencies]
-dev = [
-    "mypy>=1.7.1",
-    "ruff>=0.1.6",
-]
-
 [tool.mypy]
 mypy_path = 'stubs'
 
@@ -101,3 +81,26 @@ mypy-init-return = true
 [tool.ruff.format]
 # I prefer tabs for accessibility reasons.
 indent-style = "tab"
+
+[tool.pdm.scripts]
+start = {call = 'mpd_now_playable.cli:main'}
+lint = 'ruff check src/mpd_now_playable'
+typecheck = 'mypy -p mpd_now_playable'
+check = {composite = ['lint', 'typecheck'], keep_going = true}
+
+[tool.pdm.version]
+source = "scm"
+write_to = 'mpd_now_playable/__version__.py'
+write_template = "__version__ = '{}'"
+
+[tool.pdm.build]
+excludes = ["**/.mypy_cache"]
+
+[tool.pdm.dev-dependencies]
+dev = [
+    "mypy>=1.7.1",
+    "ruff>=0.1.6",
+    "class-doc>=0.2.6",
+]
+
+

src/mpd_now_playable/cocoa/now_playing.py

@@ -35,9 +35,9 @@ from MediaPlayer import (
 	MPRemoteCommandHandlerStatusSuccess,
 )
 
-from ..async_tools import run_background_task
 from ..player import Player
 from ..song import PlaybackState, Song
+from ..tools.asyncio import run_background_task
 from .persistent_id import song_to_persistent_id
 
 

src/mpd_now_playable/config/config-v1.json

@@ -13,7 +13,12 @@
 			"$ref": "#/definitions/URL"
 		},
 		"cache": {
+			"allOf": [
+				{
 					"$ref": "#/definitions/URL"
+				}
+			],
+			"description": "A URL describing a cache service for mpd-now-playable to use. Supported protocols are memory://, redis://, and memcached://."
 		},
 		"mpd": {
 			"additionalProperties": false,
@@ -24,14 +29,17 @@
 			"properties": {
 				"host": {
 					"default": "127.0.0.1",
+					"description": "The hostname or IP address of your MPD server. If you're running MPD on your local machine, you don't need to configure this.",
 					"format": "hostname",
 					"type": "string"
 				},
 				"password": {
+					"description": "The password required to connect to your MPD instance, if you need one.",
 					"type": "string"
 				},
 				"port": {
 					"default": 6600,
+					"description": "The port on which to connect to MPD. Unless you're managing multiple MPD servers on one machine for some reason, you probably haven't changed this from the default port, 6600.",
 					"maximum": 65535,
 					"minimum": 1,
 					"type": "integer"

src/mpd_now_playable/config/model.py

@@ -11,8 +11,14 @@ __all__ = ("MpdConfig", "Config")
 
 @dataclass(frozen=True)
 class MpdConfig:
+	#: The password required to connect to your MPD instance, if you need one.
 	password: Optional[str] = optional()
+	#: The hostname or IP address of your MPD server. If you're running MPD
+	#: on your local machine, you don't need to configure this.
 	host: Host = Host("127.0.0.1")
+	#: The port on which to connect to MPD. Unless you're managing multiple MPD
+	#: servers on one machine for some reason, you probably haven't changed this
+	#: from the default port, 6600.
 	port: Port = Port(6600)
 
 
@@ -22,5 +28,8 @@ class Config:
 		default=URL("https://cdn.00dani.me/m/schemata/mpd-now-playable/config-v1.json"),
 		metadata=alias("$schema"),
 	)
+
+	#: A URL describing a cache service for mpd-now-playable to use. Supported
+	#: protocols are memory://, redis://, and memcached://.
 	cache: Optional[URL] = optional()
 	mpd: MpdConfig = field(default_factory=MpdConfig)

src/mpd_now_playable/config/schema.py

@@ -1,15 +1,33 @@
 from json import dump
 from pathlib import Path
 from pprint import pp
+from shutil import get_terminal_size
 from typing import Any, Mapping
 
+from apischema import schema, settings
 from apischema.json_schema import JsonSchemaVersion, deserialization_schema
+from apischema.schemas import Schema
+from class_doc import extract_docs_from_cls_obj
 
 from .model import Config
 
 
+def field_base_schema(tp: type, name: str, alias: str) -> Schema | None:
+	desc_lines = extract_docs_from_cls_obj(tp).get(name, [])
+	if desc_lines:
+		print((tp, name, alias))
+		return schema(description=" ".join(desc_lines))
+	return None
+
+
+settings.base_schema.field = field_base_schema
+
+
 def generate() -> Mapping[str, Any]:
-	return deserialization_schema(Config, version=JsonSchemaVersion.DRAFT_7)
+	return deserialization_schema(
+		Config,
+		version=JsonSchemaVersion.DRAFT_7,
+	)
 
 
 def write() -> None:
@@ -18,7 +36,7 @@ def write() -> None:
 
 	schema_file = Path(__file__).parent / Config.schema.name
 	print(f"Writing this schema to {schema_file}")
-	pp(schema)
+	pp(schema, sort_dicts=True, width=get_terminal_size().columns)
 	with open(schema_file, "w") as fp:
 		dump(schema, fp, indent="\t", sort_keys=True)
 		fp.write("\n")

src/mpd_now_playable/mpd/artwork_cache.py

@@ -4,8 +4,8 @@ from typing import TypedDict
 
 from yarl import URL
 
-from ..async_tools import run_background_task
 from ..cache import Cache, make_cache
+from ..tools.asyncio import run_background_task
 from .types import CurrentSongResponse, MpdStateHandler
 
 CACHE_TTL = 60 * 60  # seconds = 1 hour

src/mpd_now_playable/mpd/listener.py

@@ -9,7 +9,7 @@ from yarl import URL
 from ..config.model import MpdConfig
 from ..player import Player
 from ..song import PlaybackState, Song, SongListener
-from ..type_tools import convert_if_exists
+from ..tools.types import convert_if_exists
 from .artwork_cache import MpdArtworkCache
 from .types import CurrentSongResponse, StatusResponse
 

stubs/class_doc/__init__.pyi

@@ -0,0 +1 @@
+def extract_docs_from_cls_obj(cls: type) -> dict[str, list[str]]: ...