feat: provide global option -j/--workers (#190)

src/docbuild/cli/cmd_cli.py

@@ -96,6 +96,14 @@ def handle_validation_error(
 )
 @click.option("-v", "--verbose", count=True, help="Increase verbosity")
 @click.option("--dry-run", is_flag=True, help="Run without making changes")
+@click.option(
+    "-j",
+    "--workers",
+    "max_workers",
+    default="half",
+    show_default=True,
+    help="Maximum number of concurrent workers (integer, 'all', or 'all2').",
+)
 @click.option(
     "--debug/--no-debug",
     default=False,
@@ -137,6 +145,7 @@ def cli(
     debug: bool,
     app_config: Path,
     env_config: Path,
+    max_workers: str | None,
     **kwargs: dict,
 ) -> None:
     """Acts as a main entry point for CLI tool.
@@ -177,6 +186,9 @@ def cli(
 
     raw_appconfig = cast(dict[str, Any], raw_appconfig)
 
+    if max_workers is not None:
+        raw_appconfig["max_workers"] = max_workers
+
     try:
         context.appconfig = AppConfig.from_dict(raw_appconfig)
     except (ValueError, ValidationError) as e:

src/docbuild/cli/context.py

@@ -2,8 +2,8 @@
 
 from dataclasses import dataclass
 from pathlib import Path
-from typing import Any
 
+from ..models.config.app import AppConfig
 from ..models.config.env import EnvConfig
 from ..models.doctype import Doctype
 
@@ -24,7 +24,7 @@ class DocBuildContext:
     appconfig_from_defaults: bool = False
     """If set, the app's config was loaded from defaults"""
 
-    appconfig: dict[str, Any] | None = None
+    appconfig: AppConfig | None = None
     """The accumulated content of all app config files"""
 
     envconfigfiles: tuple[str | Path, ...] | None = None

src/docbuild/models/config/app.py

@@ -190,14 +190,14 @@ class AppConfig(BaseModel):
     )
 
     # Added max_workers with support for ints and descriptive strings
-    max_workers: int | str = Field(
-        default="half",
+    max_workers: int = Field(
+        default="half",  # type: ignore
         description="Max concurrent workers. Supports integers or 'all', 'all2'/'half'.",
     )
 
     model_config = ConfigDict(extra="allow")
 
-    @field_validator("max_workers")
+    @field_validator("max_workers", mode="before")
     @classmethod
     def _resolve_worker_count(cls, v: int | str) -> int:
         """Resolve keywords 'all', 'half', 'all2' into concrete integers."""

tests/cli/test_worker_option.py

@@ -0,0 +1,27 @@
+from click.testing import CliRunner
+
+from docbuild.cli.cmd_cli import cli
+
+
+def test_workers_option_integration():
+    runner = CliRunner()
+
+    # We use a command that exists but we don't care if it fails
+    # due to the directory permissions seen above.
+    # We are testing the CLI parsing logic here.
+    result = runner.invoke(cli, ["-j", "1", "config", "show"])
+
+    # If '-j' was invalid, exit code would be 2 (Click usage error)
+    # Since it's valid, it should proceed to validation logic (exit code 1 or 0)
+    assert result.exit_code != 2
+    assert "no such option: -j" not in result.output
+
+def test_workers_option_invalid_value():
+    runner = CliRunner()
+
+    # Test an invalid string that should trigger our Pydantic ValueError
+    result = runner.invoke(cli, ["-j", "not-a-number", "config", "show"])
+
+    # This should trigger our 'handle_validation_error' logic
+    assert result.exit_code == 1
+    assert "Invalid max_workers value" in result.output