mtnmomo 0.1.9

MTN Momo Payment API for Rust, with support for both the Sandbox and Production environments. All products are supported: Collections, Disbursements and Remittances.
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use chrono::{DateTime, Utc};
#[doc(hidden)]
use serde::{Deserialize, Serialize};

#[derive(Debug, Serialize, Clone)]
pub struct TokenResponse {
    pub access_token: String,
    pub token_type: String,
    pub expires_in: i32,
    pub created_at: Option<DateTime<Utc>>,
}

impl<'de> Deserialize<'de> for TokenResponse {
    fn deserialize<D>(deserializer: D) -> Result<TokenResponse, D::Error>
    where
        D: serde::Deserializer<'de>,
    {
        let mut map = serde_json::Map::deserialize(deserializer)?;
        let access_token = map
            .remove("access_token")
            .and_then(|v| v.as_str().map(|s| s.to_string()))
            .ok_or_else(|| serde::de::Error::missing_field("access_token"))?;
        let token_type = map
            .remove("token_type")
            .and_then(|v| v.as_str().map(|s| s.to_string()))
            .ok_or_else(|| serde::de::Error::missing_field("token_type"))?;
        let expires_in = map
            .remove("expires_in")
            .and_then(|v| v.as_i64().map(|i| i as i32))
            .ok_or_else(|| serde::de::Error::missing_field("expires_in"))?;
        let created_at = Some(Utc::now());
        Ok(TokenResponse {
            access_token,
            token_type,
            expires_in,
            created_at,
        })
    }
}