webui: implement /api/machines/{name}/config

pkgs/clan-cli/clan_cli/config/machine.py

@@ -7,10 +7,36 @@ from typing import Optional
 from ..dirs import get_clan_flake_toplevel
 
 
+def config_for_machine(machine_name: str, flake: Optional[Path] = None) -> dict:
+    # find the flake root
+    if flake is None:
+        flake = get_clan_flake_toplevel()
+    # read the config from a json file located at {flake}/machines/{machine_name}.json
+    config_path = flake / "machines" / f"{machine_name}.json"
+    if not config_path.exists():
+        raise Exception(
+            f"Machine {machine_name} does not exist in {flake / 'machines'}"
+        )
+    with open(config_path) as f:
+        return json.load(f)
+
+
+def set_config_for_machine(
+    machine_name: str, config: dict, flake: Optional[Path] = None
+) -> None:
+    # find the flake root
+    if flake is None:
+        flake = get_clan_flake_toplevel()
+    # write the config to a json file located at {flake}/machines/{machine_name}.json
+    config_path = flake / "machines" / f"{machine_name}.json"
+    with open(config_path, "w") as f:
+        json.dump(config, f)
+
+
 def schema_for_machine(machine_name: str, flake: Optional[Path] = None) -> dict:
     if flake is None:
         flake = get_clan_flake_toplevel()
-    # use nix eval to read from .#clanModules.<module_name>.options
+    # use nix eval to lib.evalModules .#clanModules.machine-{machine_name}
     proc = subprocess.run(
         [
             "nix",

pkgs/clan-cli/clan_cli/webui/routers/machines.py

@@ -2,11 +2,14 @@ from typing import Annotated
 
 from fastapi import APIRouter, Body
 
-from ...config.machine import schema_for_machine
+from ...config.machine import (
+    config_for_machine,
+    schema_for_machine,
+    set_config_for_machine,
+)
 from ...machines.create import create_machine as _create_machine
 from ...machines.list import list_machines as _list_machines
 from ..schemas import (
-    Config,
     ConfigResponse,
     Machine,
     MachineCreate,
@@ -41,14 +44,15 @@ async def get_machine(name: str) -> MachineResponse:
 
 @router.get("/api/machines/{name}/config")
 async def get_machine_config(name: str) -> ConfigResponse:
-    return ConfigResponse(config=Config())
+    config = config_for_machine(name)
+    return ConfigResponse(config=config)
 
 
 @router.put("/api/machines/{name}/config")
 async def set_machine_config(
-    name: str, config: Annotated[Config, Body()]
+    name: str, config: Annotated[dict, Body()]
 ) -> ConfigResponse:
-    print("TODO")
+    set_config_for_machine(name, config)
     return ConfigResponse(config=config)
 
 

pkgs/clan-cli/clan_cli/webui/schemas.py

@@ -26,12 +26,8 @@ class MachineResponse(BaseModel):
     machine: Machine
 
 
-class Config(BaseModel):
-    pass
-
-
 class ConfigResponse(BaseModel):
-    config: Config
+    config: dict
 
 
 class SchemaResponse(BaseModel):