Better restructure, and improved debug

src/node_deployer/config.py

@@ -0,0 +1,73 @@
+# flake8: noqa: F821
+# type: ignore
+#* This file sets a number of config constants by modifying its own globals
+#* As a result, F821 and typing is disabled as the interpreter cannot be
+#* trusted to know when F821 or UndefinedVeriable errors should be raised.
+
+from pathlib import Path
+
+import docker
+import tomllib
+
+
+CLIENT = docker.from_env(version="auto")
+MAX_PORT: int = 65535
+PROJECT_ROOT: Path = Path(__file__).parent.parent.parent.absolute()
+
+type ConfigLabel = str | list[str]
+
+
+def get_config(config_label: ConfigLabel = ["default"]) -> dict:
+    if isinstance(config_label, str):
+        config_label = [config_label]
+    with open(PROJECT_ROOT / "config.toml", "rb") as f:
+        configs: dict = tomllib.load(f)
+    out_config: dict = {}
+    for c in config_label:
+        out_config.update(configs[c])
+    return out_config
+
+
+def finalise_config(config: dict) -> None:
+    # First, convert base paths to Path objects
+    for k, v in config.items():
+        match k:
+            case "SRC_DIR" | "BUILD_DIR":
+                config[k] = Path(v).absolute()
+            case "CWD_MOUNTDIR":
+                config[k] = Path(v)
+    # Then, get required paths from config or globals if not present
+    build_dir = config.get("BUILD_DIR", BUILD_DIR)
+    cwd_mountdir = config.get("CWD_MOUNTDIR", CWD_MOUNTDIR)
+    src_dir = config.get("SRC_DIR", SRC_DIR)
+    # Finally, construct the secondary parameters
+    config["FUELIGNITION_BUILD_DIR"] = build_dir / config.get(
+        "FUELIGNITION_BUILD_DIR",
+        FUELIGNITION_BUILD_DIR
+    )
+    config["DOCKERFILE_DIR"] = src_dir / config.get(
+        "DOCKERFILE_DIR",
+        DOCKERFILE_DIR
+    )
+    config["CWD_MOUNT"] = docker.types.Mount(
+        target=str(cwd_mountdir),
+        source=str(PROJECT_ROOT),
+        type="bind",
+    )
+
+
+def apply_config(config: dict) -> None:
+    finalise_config(config)
+    globals().update(config)
+    
+
+def update_config(config_label: ConfigLabel = "default") -> None:
+    apply_config(get_config(config_label))
+
+
+def init(config) -> None:
+    globals().update(get_config(config))
+    update_config()
+
+
+init(config="default")