Parse [MIXING]

api/s20_mixing.py

@@ -94,3 +94,38 @@ def delete_mixing_cache(name: str, cs: ChangeSet) -> SqlChangeSet:
 
 def delete_mixing(name: str, cs: ChangeSet) -> ChangeSet:
     return execute_command(name, delete_mixing_cache(name, cs))
+
+
+class InpMixing:
+    def __init__(self, line: str) -> None:
+        tokens = line.split()
+
+        num = len(tokens)
+        has_desc = tokens[-1].startswith(';')
+        num_without_desc = (num - 1) if has_desc else num
+
+        self.tank = str(tokens[0])
+        self.model = str(tokens[1])
+        self.value = float(tokens[3]) if num_without_desc >= 4 else None
+
+
+def inp_in_mixing(section: list[str]) -> ChangeSet:
+    cs = ChangeSet()
+    for s in section:
+        # skip comment
+        if s.startswith(';'):
+            continue
+        obj = InpMixing(s)
+        cs.append({'operation': API_ADD, 'type': 'mixing', 'tank': obj.tank, 'model': obj.model, 'value': obj.value})
+    return cs
+
+
+def inp_out_mixing(name: str) -> list[str]:
+    lines = []
+    objs = read_all(name, 'select * from mixing')
+    for obj in objs:
+        tank = obj['tank']
+        model = obj['model']
+        value = obj['value'] if obj['value'] != None else ''
+        lines.append(f'{tank} {model} {value}')
+    return lines