1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
|
"""Device status for IOmeter bridge and core"""
import json
from dataclasses import dataclass, field
@dataclass
class Bridge:
"""Represents the bridge device status"""
rssi: int
version: str
@dataclass
class Core:
"""Represents the core device status"""
connection_status: str
rssi: int | None
version: str | None
power_status: str | None
attachment_status: str | None
pin_status: str | None
battery_level: int | None
@dataclass
class Device:
"""Represents the complete device information"""
bridge: Bridge
id: str
core: Core
@dataclass
class Meter:
"""Represents the meter device."""
number: str | None
class NullMeter(Meter):
"""Null Object for Meter to avoid None-attribute errors."""
def __init__(self) -> None:
super().__init__(number=None)
def __bool__(self) -> bool:
return False
@dataclass
class Status:
"""Top level class representing the complete device status"""
device: Device
meter: Meter = field(default_factory=NullMeter)
typename: str = "iometer.status.v1"
@classmethod
def from_json(cls, json_str: str) -> "Status":
"""Create a Status instance from JSON string"""
data = json.loads(json_str)
# Create bridge
bridge = Bridge(
rssi=data["device"]["bridge"]["rssi"],
version=data["device"]["bridge"]["version"],
)
# Create Core
core_data = data["device"]["core"]
core = Core(
connection_status=core_data["connectionStatus"],
rssi=core_data.get("rssi", None),
version=core_data.get("version", None),
power_status=core_data.get("powerStatus", None),
battery_level=core_data.get("batteryLevel", None),
attachment_status=core_data.get("attachmentStatus", None),
pin_status=core_data.get("pinStatus", None),
)
# Create device
device = Device(bridge=bridge, id=data["device"]["id"], core=core)
# Create meter (use Null Object if missing)
meter = (
Meter(number=data["meter"]["number"]) if data.get("meter") else NullMeter()
)
# Create full status
return cls(meter=meter, device=device)
def to_json(self) -> str:
"""Convert the status to JSON string"""
return json.dumps(
{
"__typename": self.typename,
# If meter is a NullMeter, serialize as null
"meter": {"number": self.meter.number} if self.meter else None,
"device": {
"bridge": {
"rssi": self.device.bridge.rssi,
"version": self.device.bridge.version,
},
"id": self.device.id,
"core": {
"connectionStatus": self.device.core.connection_status,
"rssi": self.device.core.rssi,
"version": self.device.core.version,
"powerStatus": self.device.core.power_status,
"batteryLevel": self.device.core.battery_level,
"attachmentStatus": self.device.core.attachment_status,
"pinStatus": self.device.core.pin_status,
},
},
}
)
def __str__(self) -> str:
return self.to_json()
|
