matc 0.1.3

Matter protocol library (controller side)
Documentation 
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

//! Matter TLV encoders and decoders for Boolean State Cluster
//! Cluster ID: 0x0045
//!
//! This file is automatically generated from BooleanState.xml

#![allow(clippy::too_many_arguments)]

use crate::tlv;
use anyhow;
use serde_json;


// Attribute decoders

/// Decode StateValue attribute (0x0000)
pub fn decode_state_value(inp: &tlv::TlvItemValue) -> anyhow::Result<bool> {
    if let tlv::TlvItemValue::Bool(v) = inp {
        Ok(*v)
    } else {
        Err(anyhow::anyhow!("Expected Bool"))
    }
}


// JSON dispatcher function

/// Decode attribute value and return as JSON string
///
/// # Parameters
/// * `cluster_id` - The cluster identifier
/// * `attribute_id` - The attribute identifier
/// * `tlv_value` - The TLV value to decode
///
/// # Returns
/// JSON string representation of the decoded value or error
pub fn decode_attribute_json(cluster_id: u32, attribute_id: u32, tlv_value: &crate::tlv::TlvItemValue) -> String {
    // Verify this is the correct cluster
    if cluster_id != 0x0045 {
        return format!("{{\"error\": \"Invalid cluster ID. Expected 0x0045, got {}\"}}", cluster_id);
    }

    match attribute_id {
        0x0000 => {
            match decode_state_value(tlv_value) {
                Ok(value) => serde_json::to_string(&value).unwrap_or_else(|_| "null".to_string()),
                Err(e) => format!("{{\"error\": \"{}\"}}", e),
            }
        }
        _ => format!("{{\"error\": \"Unknown attribute ID: {}\"}}", attribute_id),
    }
}

/// Get list of all attributes supported by this cluster
///
/// # Returns
/// Vector of tuples containing (attribute_id, attribute_name)
pub fn get_attribute_list() -> Vec<(u32, &'static str)> {
    vec![
        (0x0000, "StateValue"),
    ]
}

// Typed facade (invokes + reads)

/// Read `StateValue` attribute from cluster `Boolean State`.
pub async fn read_state_value(conn: &crate::controller::Connection, endpoint: u16) -> anyhow::Result<bool> {
    let tlv = conn.read_request2(endpoint, crate::clusters::defs::CLUSTER_ID_BOOLEAN_STATE, crate::clusters::defs::CLUSTER_BOOLEAN_STATE_ATTR_ID_STATEVALUE).await?;
    decode_state_value(&tlv)
}

#[derive(Debug, serde::Serialize)]
pub struct StateChangeEvent {
    pub state_value: Option<bool>,
}

// Event decoders

/// Decode StateChange event (0x00, priority: info)
pub fn decode_state_change_event(inp: &tlv::TlvItemValue) -> anyhow::Result<StateChangeEvent> {
    if let tlv::TlvItemValue::List(_fields) = inp {
        let item = tlv::TlvItem { tag: 0, value: inp.clone() };
        Ok(StateChangeEvent {
                                state_value: item.get_bool(&[0]),
        })
    } else {
        Err(anyhow::anyhow!("Expected struct fields"))
    }
}