Initial commit (fork from ManiMatter/mirrarr)

Carved out the queue cleaning bits from mirrarr, without taking over the instance synchronization items.
Not tested yet.

src/utils/nest_functions.py

@@ -0,0 +1,47 @@
+
+async def nested_set(dic, keys, value, matchConditions=None):
+    # Sets the value of a key in a dictionary to a certain value. 
+    # If multiple items are present, it can filter for a matching item
+    for key in keys[:-1]:
+        dic = dic.setdefault(key, {})
+    if matchConditions:
+        i = 0
+        match = False
+        for item in dic:   
+            for matchCondition in matchConditions:
+                if item[matchCondition] != matchConditions[matchCondition]:
+                    match = False
+                    break
+                else:
+                    match = True
+            if match:
+                dic = dic[i]
+                break
+            i += 1
+    dic[keys[-1]] = value
+
+
+async def add_keys_nested_dict(d, keys, defaultValue = None):
+    # Creates a nested value if key does not exist
+    for key in keys[:-1]:
+        if key not in d:
+            d[key] = {}
+        d = d[key]
+    d.setdefault(keys[-1], defaultValue)
+
+async def nested_get(dic, return_attribute, matchConditions):
+    # Retrieves a list contained in return_attribute, found within dic based on matchConditions
+    i = 0
+    match = False
+    hits = []
+    for item in dic:   
+        for matchCondition in matchConditions:
+            if item[matchCondition] != matchConditions[matchCondition]:
+                match = False
+                break
+            else:
+                match = True
+        if match:
+            hits.append(dic[i][return_attribute])
+        i += 1
+    return hits