Added settings & config yaml.

config_loader.py

@@ -0,0 +1,65 @@
+import yaml
+from dataclasses import dataclass
+
+@dataclass
+class Rule:
+    key: any
+    value_default: any
+    value_type: type
+    value_min: int | float | None
+    value_max: int | float | None
+
+    def __init__(self, key, value_default, value_type: type, value_min: int | float | None = None, value_max: int | float | None = None):
+        self.key = key
+        self.value_default = value_default
+        self.value_type = value_type
+        self.value_min = value_min
+        self.value_max = value_max
+
+def _get_valid_value(data: dict, r: Rule):
+    if r.value_type != type(r.value_default):
+        raise Exception(f"'value_type' does not match type of 'value_default'!")
+    value = data.get(r.key)
+    if value is None:
+        value = r.value_default
+    else:
+        try:
+            value = r.value_type(value)
+        except:
+            value = r.value_default
+
+    value_is_numeric = r.value_type == int or r.value_type == float
+    if value_is_numeric and r.value_min:
+        if r.value_type != type(r.value_min):
+            raise Exception(f"Type of 'value_type' does not match the type of 'value_min'!")
+        value = max(r.value_min, value)
+    if value_is_numeric and r.value_max:
+        if r.value_type != type(r.value_max):
+            raise Exception(f"Type of 'value_type' does not match the type of 'value_max'!")
+        value = min(r.value_max, value)
+
+    return value
+
+def validated(rules: list[Rule], data: dict = {}):
+    valid = {}
+    for r in rules:
+        valid[r.key] = _get_valid_value(data, r)
+    return valid
+
+def yaml_load(path, rules: list[Rule]):
+    data = {}
+    try:
+        with open(path, 'r') as file:
+            data = yaml.safe_load(file)
+    except:
+        pass
+    return validated(rules, data)
+
+def yaml_save(path, rules: list[Rule], data: dict) -> bool:
+    data = validated(rules, data)
+    try:
+        with open(path, 'w') as file:
+            yaml.dump(data, file)
+        return True
+    except:
+        return False