obscura-server 0.9.1

A server for relaying secure messages using the Signal Protocol
Documentation 
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use async_trait::async_trait;
use thiserror::Error;

pub mod fcm;

#[derive(Error, Debug)]
pub enum PushError {
    #[error("Token is no longer registered")]
    Unregistered,
    #[error("Rate limit exceeded")]
    QuotaExceeded,
    #[error("External service error: {0}")]
    Other(#[from] anyhow::Error),
}

#[async_trait]
pub trait PushProvider: Send + Sync + std::fmt::Debug {
    /// Sends a push notification to a specific device token.
    ///
    /// # Errors
    /// Returns `PushError::Unregistered` if the token is invalid and should be deleted.
    async fn send_push(&self, token: &str) -> Result<(), PushError>;
}

/// A no-op push provider that logs instead of sending real notifications.
/// Used when FCM credentials are not configured.
#[derive(Debug)]
pub struct LoggingPushProvider;

#[async_trait]
impl PushProvider for LoggingPushProvider {
    async fn send_push(&self, _token: &str) -> Result<(), PushError> {
        tracing::warn!("Push notification not sent: FCM is not configured");
        Ok(())
    }
}