matc 0.1.2

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
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107

//! Matter TLV encoders and decoders for Chime Cluster
//! Cluster ID: 0x0556
//!
//! This file is automatically generated from Chime.xml

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


// Struct definitions

#[derive(Debug, serde::Serialize)]
pub struct ChimeSound {
    pub chime_id: Option<u8>,
    pub name: Option<String>,
}

// Command encoders

// Attribute decoders

/// Decode InstalledChimeSounds attribute (0x0000)
pub fn decode_installed_chime_sounds(inp: &tlv::TlvItemValue) -> anyhow::Result<Vec<ChimeSound>> {
    let mut res = Vec::new();
    if let tlv::TlvItemValue::List(v) = inp {
        for item in v {
            res.push(ChimeSound {
                chime_id: item.get_int(&[0]).map(|v| v as u8),
                name: item.get_string_owned(&[1]),
            });
        }
    }
    Ok(res)
}

/// Decode SelectedChime attribute (0x0001)
pub fn decode_selected_chime(inp: &tlv::TlvItemValue) -> anyhow::Result<u8> {
    if let tlv::TlvItemValue::Int(v) = inp {
        Ok(*v as u8)
    } else {
        Err(anyhow::anyhow!("Expected UInt8"))
    }
}

/// Decode Enabled attribute (0x0002)
pub fn decode_enabled(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 != 0x0556 {
        return format!("{{\"error\": \"Invalid cluster ID. Expected 0x0556, got {}\"}}", cluster_id);
    }

    match attribute_id {
        0x0000 => {
            match decode_installed_chime_sounds(tlv_value) {
                Ok(value) => serde_json::to_string(&value).unwrap_or_else(|_| "null".to_string()),
                Err(e) => format!("{{\"error\": \"{}\"}}", e),
            }
        }
        0x0001 => {
            match decode_selected_chime(tlv_value) {
                Ok(value) => serde_json::to_string(&value).unwrap_or_else(|_| "null".to_string()),
                Err(e) => format!("{{\"error\": \"{}\"}}", e),
            }
        }
        0x0002 => {
            match decode_enabled(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, "InstalledChimeSounds"),
        (0x0001, "SelectedChime"),
        (0x0002, "Enabled"),
    ]
}