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use std::env;
use axum::{
extract::{Json},
};
use web_push::{
SubscriptionInfo,
VapidSignatureBuilder,
WebPushMessageBuilder,
ContentEncoding,
WebPushClient,
IsahcWebPushClient,
};
pub async fn vapid() -> String {
let vapid_public_key = env::var("VAPID_PUBLIC_KEY").unwrap_or_default();
String::from(vapid_public_key)
}
pub async fn register() -> String {
String::from("OK")
}
pub async fn unregister() -> String {
String::from("OK")
}
async fn push_message(
endpoint: String,
keys: Keys,
message: &String,
) -> Result<(), crate::error::Internal> {
let content = message.as_bytes();
let subscription_info = SubscriptionInfo::new(endpoint, keys.p256dh, keys.auth);
// This will need to come from the DB eventually:
let private_key = String::from(env::var("VAPID_PRIVATE_KEY").unwrap_or_default());
let sig_builder = VapidSignatureBuilder::from_base64(&private_key, &subscription_info)?.build()?;
let mut builder = WebPushMessageBuilder::new(&subscription_info);
builder.set_payload(ContentEncoding::Aes128Gcm, content);
builder.set_vapid_signature(sig_builder);
let client = IsahcWebPushClient::new()?;
client.send(builder.build()?).await?;
Ok(())
}
#[axum::debug_handler]
pub async fn echo(
Json(payload): Json<PushPayload>,
) -> Result<(), crate::error::Internal> {
push_message(payload.endpoint, payload.keys, &payload.msg).await?;
Ok(())
}
#[derive(serde::Deserialize)]
pub struct Keys {
pub p256dh: String,
pub auth: String,
}
#[derive(serde::Deserialize)]
pub struct PushPayload {
pub msg: String,
pub endpoint: String,
pub keys: Keys,
}
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