o402 0.1.5

OpenAI-compatible gateway, paid with x402.
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

//! stellar exact accepts.

use r402_protocol::network::ChainId;
use r402_protocol::payment::PriceTag;

#[cfg(not(feature = "stellar"))]
use super::feature_missing;
#[cfg(feature = "stellar")]
use super::{
    accept_custom_decimals, amount_i128, custom_asset_address, invalid_asset_address,
    invalid_network, invalid_pay_to, named_ticker, no_deployment, reject_evm_fields, require_exact,
};
use crate::config::{AcceptConfig, ConfigError};

#[cfg(not(feature = "stellar"))]
pub(super) fn build(
    _accept: &AcceptConfig,
    _network: &ChainId,
    _amount: u128,
    _pay_to: &str,
) -> Result<PriceTag, ConfigError> {
    Err(feature_missing("stellar", "stellar"))
}

#[cfg(not(feature = "stellar"))]
pub(super) fn decimals(_accept: &AcceptConfig, _network: &ChainId) -> Result<u8, ConfigError> {
    Err(feature_missing("stellar", "stellar"))
}

#[cfg(feature = "stellar")]
pub(super) fn decimals(accept: &AcceptConfig, network: &ChainId) -> Result<u8, ConfigError> {
    Ok(token(accept, network)?.decimals)
}

#[cfg(feature = "stellar")]
pub(super) fn build(
    accept: &AcceptConfig,
    network: &ChainId,
    amount: u128,
    pay_to: &str,
) -> Result<PriceTag, ConfigError> {
    use std::str::FromStr as _;

    use r402_stellar::StellarExact;
    use r402_stellar::chain::StellarAddress;

    require_exact(accept)?;
    reject_evm_fields(accept, "stellar")?;
    let amount = amount_i128(amount)?;
    let pay_to = StellarAddress::from_str(pay_to)
        .map_err(|error| invalid_pay_to("Stellar", pay_to, error))?;
    let token = token(accept, network)?;
    Ok(StellarExact::price_tag(pay_to, token.amount(amount)))
}

#[cfg(feature = "stellar")]
fn token(
    accept: &AcceptConfig,
    network: &ChainId,
) -> Result<r402_stellar::chain::StellarTokenDeployment, ConfigError> {
    use std::str::FromStr as _;

    use r402_stellar::USDC;
    use r402_stellar::chain::{StellarAddress, StellarChainReference, StellarTokenDeployment};

    let chain = StellarChainReference::try_from(network.clone())
        .map_err(|error| invalid_network("stellar", &accept.network, error))?;
    if named_ticker(accept, &["usdc"])?.is_some() {
        return USDC::on(chain)
            .cloned()
            .ok_or_else(|| no_deployment("USDC", &accept.network));
    }
    let address = custom_asset_address(accept)?;
    let address =
        StellarAddress::from_str(address).map_err(|error| invalid_asset_address(address, error))?;
    Ok(StellarTokenDeployment::new(
        chain,
        address,
        accept_custom_decimals(accept)?,
    ))
}