feat(args): Change config arguments to be a list

Change config parse argument from a single path
to a list of paths.

Add a new base Resource class that handles multiple paths
relative to the single path the Resource class takes as input.

src/cijoe/cli/cli.py

@@ -187,7 +187,6 @@ def cli_example(args):
     err = 0
 
     resources = get_resources()
-
     resource = resources["configs"].get(f"{args.example}.default-config", None)
     if resource is None:
         log.error(
@@ -276,7 +275,7 @@ def cli_workflow(args):
         log.error(f"aborting; output({args.output}) directory already exists")
         return errno.EPERM
 
-    config = Config(args.config)
+    config = Config([args.config])
     errors = config.load()
     if errors:
         log_errors(errors)
@@ -417,9 +416,10 @@ def parse_args():
     workflow_group.add_argument(
         "--config",
         "-c",
+        nargs="+",
         type=Path,
-        default=Path(os.environ.get("CIJOE_DEFAULT_CONFIG", DEFAULT_CONFIG_FILENAME)),
-        help="Path to the Configuration file.",
+        default=[Path(os.environ.get("CIJOE_DEFAULT_CONFIG", DEFAULT_CONFIG_FILENAME))],
+        help="Paths to the Configuration file.",
     )
     workflow_group.add_argument(
         "--workflow",
@@ -552,10 +552,17 @@ def main(args=None):
 
     for filearg in ["config", "workflow"]:
         argv = getattr(args, filearg)
-        path = search_for_file(argv)
-        if path is None:
-            log.error(f"{filearg}({argv}) does not exist; exiting")
-            return errno.EINVAL
+        if isinstance(argv, list):
+            for p in argv:
+                path = search_for_file(p)
+                if path is None:
+                    log.error(f"{filearg}({p}) does not exist; exiting")
+                    return errno.EINVAL
+        else:
+            path = search_for_file(argv)
+            if path is None:
+                log.error(f"{filearg}({argv}) does not exist; exiting")
+                return errno.EINVAL
 
         setattr(args, filearg, path)
 

src/cijoe/core/resources.py

@@ -156,7 +156,30 @@ def content_from_file(self):
             self.content = resource_file.read()
 
 
-class Config(Resource):
+class ResourceMultiFiles(object):
+    """Base representation of a Resource that spans over multiple files"""
+
+    def __init__(self, paths: List[Path], pkg=None):
+        self.paths = [path.resolve() for path in paths]
+        self.pkg = pkg
+
+        self.content = None
+
+        prefix = ".".join(pkg.name.split(".")[1:-1]) + "." if pkg else ""
+
+        self.ident = f"{prefix}{'_'.join([path.stem for path in self.paths])}"
+
+    @property
+    def path(self) -> Path | None:
+        if len(self.paths):
+            return self.paths[0]
+        return None
+
+    def __repr__(self):
+        return "_".join([str(path) for path in self.paths])
+
+
+class Config(ResourceMultiFiles):
     """
     Encapsulation of a CIJOE config-file, e.g. 'default-config.toml'
 
@@ -165,16 +188,18 @@ class Config(Resource):
 
     SUFFIX = ".toml"
 
-    def __init__(self, path: Path, pkg=None):
-        super().__init__(path, pkg)
+    def __init__(self, paths: List[Path], pkg=None):
+        super().__init__(paths, pkg)
 
         self.options: Dict[str, Any] = {}
 
     def load(self):
         """Populates self.options on success. Returns a list of errors otherwise"""
 
         # config_dict = dict_from_yamlfile(self.path)
-        config_dict = dict_from_tomlfile(self.path)
+        config_dict = {}
+        for path in self.paths:
+            config_dict.update(dict_from_tomlfile(path))
 
         errors = dict_substitute(config_dict, default_context())
         if errors:
@@ -184,14 +209,14 @@ def load(self):
         return []
 
     @staticmethod
-    def from_path(path, pkg=None):
+    def from_path(path: Path, pkg=None):
         """Instantiate a Config from path, returning None on error"""
 
         path = Path(path).resolve()
         if not path.exists():
             return None
 
-        config = Config(path, pkg)
+        config = Config([path], pkg)
         errors = config.load()
         if errors:
             return None
@@ -461,7 +486,7 @@ def __process_candidate(self, candidate: Path, category: str, pkg):
             if not resource.content_has_script_func():
                 category = "auxiliary"
         elif category == "configs":
-            resource = Config(candidate, pkg)
+            resource = Config([candidate], pkg)
         elif category == "workflows":
             resource = Workflow(candidate, pkg)
         else: