tap_msg/
utils.rs

1//! Utility functions for TAP core
2//!
3//! This module provides utility functions used throughout the TAP core library.
4
5use crate::error::Error;
6use crate::message::types::Attachment as TapAttachment;
7use crate::Result;
8use didcomm::{
9    Attachment as DidcommAttachment, AttachmentData as DidcommAttachmentData, Base64AttachmentData,
10    JsonAttachmentData,
11};
12use std::time::SystemTime;
13
14/// Gets the current time as a unix timestamp (seconds since the epoch)
15///
16/// # Returns
17///
18/// * `Result<u64>` - The current time as a unix timestamp, or an error if
19///   the system time cannot be determined.
20pub fn get_current_time() -> Result<u64> {
21    SystemTime::now()
22        .duration_since(SystemTime::UNIX_EPOCH)
23        .map_err(|e| Error::ParseError(format!("Failed to get current time: {}", e)))
24        .map(|duration| duration.as_secs())
25}
26
27/// Converts a TAP attachment into a DIDComm attachment.
28///
29/// # Arguments
30///
31/// * `tap_attachment` - A reference to the TAP Attachment.
32///
33/// # Returns
34///
35/// * `Option<DidcommAttachment>` - The converted DIDComm attachment, or None if input data is missing.
36pub fn convert_tap_attachment_to_didcomm(
37    tap_attachment: &TapAttachment,
38) -> Option<DidcommAttachment> {
39    // Convert TAP AttachmentData (struct with optional fields)
40    // to DIDComm AttachmentData (enum Base64 | Json | Links | ...)
41    let didcomm_data_result = tap_attachment.data.as_ref().and_then(|data| {
42        if let Some(b64) = &data.base64 {
43            // Assuming didcomm::AttachmentData::Base64 exists and takes (value, Option<hash>)
44            // We don't have hash info from TAP attachment, so pass None.
45            // Need to confirm the exact signature of didcomm::AttachmentData::Base64
46            // For now, let's assume it takes { value: String }
47            Some(DidcommAttachmentData::Base64 {
48                value: Base64AttachmentData {
49                    base64: b64.clone(),
50                    jws: None,
51                },
52            })
53        } else {
54            // Refactor using Option::map as suggested by clippy
55            data.json
56                .as_ref()
57                .map(|json_val| DidcommAttachmentData::Json {
58                    value: JsonAttachmentData {
59                        json: json_val.clone(),
60                        jws: None,
61                    },
62                })
63        }
64    });
65
66    // Only create attachment if data is present (as per DIDComm spec)
67    didcomm_data_result.map(|data| DidcommAttachment {
68        id: Some(tap_attachment.id.clone()),
69        media_type: Some(tap_attachment.media_type.clone()),
70        data,
71        description: None,  // TAP attachment doesn't have description
72        filename: None,     // TAP attachment doesn't have filename
73        format: None,       // TAP attachment doesn't have format
74        lastmod_time: None, // TAP attachment doesn't have lastmod_time
75        byte_count: None,   // TAP attachment doesn't have byte_count
76    })
77}
tap_msg/utils.rs

tap_msg/
utils.rs
