feat: simplify CLI feature (#23)

* chore: cleanup + add tests

* chore: remove graph and show fixtures commands

* feat: add async_command wrapper

src/fastapi_toolsets/cli/config.py

@@ -0,0 +1,92 @@
+"""CLI configuration."""
+
+import importlib
+import sys
+import tomllib
+from dataclasses import dataclass
+from pathlib import Path
+
+import typer
+
+
+@dataclass
+class CliConfig:
+    """CLI configuration loaded from pyproject.toml."""
+
+    fixtures: str | None = None
+    db_context: str | None = None
+
+    def get_fixtures_registry(self):
+        """Import and return the fixtures registry."""
+        from ..fixtures import FixtureRegistry
+
+        if not self.fixtures:
+            raise typer.BadParameter(
+                "No fixtures registry configured. "
+                "Add 'fixtures' to [tool.fastapi-toolsets] in pyproject.toml."
+            )
+
+        registry = _import_from_string(self.fixtures)
+
+        if not isinstance(registry, FixtureRegistry):
+            raise typer.BadParameter(
+                f"'fixtures' must be a FixtureRegistry instance, got {type(registry).__name__}"
+            )
+
+        return registry
+
+    def get_db_context(self):
+        """Import and return the db_context function."""
+        if not self.db_context:
+            raise typer.BadParameter(
+                "No db_context configured. "
+                "Add 'db_context' to [tool.fastapi-toolsets] in pyproject.toml."
+            )
+        return _import_from_string(self.db_context)
+
+
+def _import_from_string(import_path: str):
+    """Import an object from a string path like 'module.submodule:attribute'."""
+    if ":" not in import_path:
+        raise typer.BadParameter(
+            f"Invalid import path '{import_path}'. Expected format: 'module:attribute'"
+        )
+
+    module_path, attr_name = import_path.rsplit(":", 1)
+
+    # Add cwd to sys.path for local imports
+    cwd = str(Path.cwd())
+    if cwd not in sys.path:
+        sys.path.insert(0, cwd)
+
+    try:
+        module = importlib.import_module(module_path)
+    except ImportError as e:
+        raise typer.BadParameter(f"Cannot import module '{module_path}': {e}")
+
+    if not hasattr(module, attr_name):
+        raise typer.BadParameter(
+            f"Module '{module_path}' has no attribute '{attr_name}'"
+        )
+
+    return getattr(module, attr_name)
+
+
+def load_config() -> CliConfig:
+    """Load CLI configuration from pyproject.toml."""
+    pyproject_path = Path.cwd() / "pyproject.toml"
+
+    if not pyproject_path.exists():
+        return CliConfig()
+
+    try:
+        with open(pyproject_path, "rb") as f:
+            data = tomllib.load(f)
+
+        tool_config = data.get("tool", {}).get("fastapi-toolsets", {})
+        return CliConfig(
+            fixtures=tool_config.get("fixtures"),
+            db_context=tool_config.get("db_context"),
+        )
+    except Exception:
+        return CliConfig()