wip

Cargo.toml

@@ -35,7 +35,7 @@ sha2 = "0.10.8"
 sqlx = { version = "0.8.1", features = ["mysql", "runtime-tokio", "chrono", "uuid"] }
 config = { version = "0.15.7", features = ["yaml"] }
 chrono = { version = "0.4.38", features = ["serde"] }
-reqwest = { version = "0.12.8", features = ["stream"] }
+reqwest = { version = "0.12.8", features = ["stream", "http2"] }
 clap = { version = "4.5.18", features = ["derive"] }
 mime2ext = "0.1.53"
 infer = "0.19.0"
@@ -48,4 +48,4 @@ ffmpeg-rs-raw = { git = "https://git.v0l.io/Kieran/ffmpeg-rs-raw.git", rev = "a6
 candle-core = { git = "https://git.v0l.io/huggingface/candle.git", tag = "0.8.1", optional = true }
 candle-nn = { git = "https://git.v0l.io/huggingface/candle.git", tag = "0.8.1", optional = true }
 candle-transformers = { git = "https://git.v0l.io/huggingface/candle.git", tag = "0.8.1", optional = true }
-fedimint-tonic-lnd = { version = "0.2.0", optional = true, features = ["invoicesrpc"] }
+fedimint-tonic-lnd = { version = "0.2.0", optional = true, default-features = false, features = ["invoicesrpc", "lightningrpc"] }

config.yaml

@@ -35,9 +35,9 @@ payments:
   fiat: "USD"
   # LND node config
   lnd:
-    endpoint: "https://mylnd:10002"
-    tls: "tls.crt"
-    macaroon: "admin.macaroon"
+    endpoint: "https://127.0.0.1:10001"
+    tls: "/home/kieran/.polar/networks/3/volumes/lnd/alice/tls.cert"
+    macaroon: "/home/kieran/.polar/networks/3/volumes/lnd/alice/data/chain/bitcoin/regtest/admin.macaroon"
   # Cost per unit (BTC/USD/EUR/AUD/CAD/JPY/GBP)
   cost:
     currency: "BTC"

migrations/20250202135844_payments.sql

@@ -9,13 +9,13 @@ create table payments
     user_id      integer unsigned not null,
     created      timestamp default current_timestamp,
     amount       integer unsigned not null,
-    is_paid      bit(1) not null,
+    is_paid      bit(1) not null default 0,
     days_value   integer unsigned not null,
     size_value   integer unsigned not null,
-    index        integer unsigned not null,
-    rate         double not null,
+    settle_index integer unsigned,
+    rate         float,
 
-    constraint fk_payments_user
+    constraint fk_payments_user_id
         foreign key (user_id) references users (id)
             on delete cascade
             on update restrict

src/background/mod.rs

@@ -1,24 +1,47 @@
 use crate::db::Database;
 use crate::filesystem::FileStore;
 use anyhow::Result;
-use log::info;
+use log::{info, warn};
 use tokio::task::JoinHandle;
 
 #[cfg(feature = "media-compression")]
 mod media_metadata;
 
-pub fn start_background_tasks(db: Database, file_store: FileStore) -> Vec<JoinHandle<Result<()>>> {
+#[cfg(feature = "payments")]
+mod payments;
+
+pub fn start_background_tasks(
+    db: Database,
+    file_store: FileStore,
+    #[cfg(feature = "payments")] client: Option<fedimint_tonic_lnd::Client>,
+) -> Vec<JoinHandle<Result<()>>> {
     let mut ret = vec![];
 
     #[cfg(feature = "media-compression")]
     {
+        let db = db.clone();
         ret.push(tokio::spawn(async move {
             info!("Starting MediaMetadata background task");
-            let mut m = media_metadata::MediaMetadata::new(db.clone(), file_store.clone());
+            let mut m = media_metadata::MediaMetadata::new(db, file_store.clone());
             m.process().await?;
             info!("MediaMetadata background task completed");
             Ok(())
         }));
     }
+    #[cfg(feature = "payments")]
+    {
+        if let Some(client) = client {
+            let db = db.clone();
+            ret.push(tokio::spawn(async move {
+                info!("Starting PaymentsHandler background task");
+                let mut m = payments::PaymentsHandler::new(client, db);
+                m.process().await?;
+                info!("PaymentsHandler background task completed");
+                Ok(())
+            }));
+        } else {
+            warn!("Not starting PaymentsHandler, configuration missing")
+        }
+    }
     ret
 }

src/background/payments.rs

@@ -0,0 +1,18 @@
+use crate::db::Database;
+use anyhow::Result;
+use fedimint_tonic_lnd::Client;
+
+pub struct PaymentsHandler {
+    client: Client,
+    database: Database,
+}
+
+impl PaymentsHandler {
+    pub fn new(client: Client, database: Database) -> Self {
+        PaymentsHandler { client, database }
+    }
+
+    pub async fn process(&mut self) -> Result<()> {
+        Ok(())
+    }
+}

src/bin/main.rs

@@ -3,6 +3,8 @@ use std::net::{IpAddr, SocketAddr};
 use anyhow::Error;
 use clap::Parser;
 use config::Config;
+#[cfg(feature = "payments")]
+use fedimint_tonic_lnd::lnrpc::GetInfoRequest;
 use log::{error, info};
 use rocket::config::Ident;
 use rocket::data::{ByteUnit, Limits};
@@ -102,11 +104,35 @@ async fn main() -> Result<(), Error> {
         rocket = rocket.mount("/", routes![routes::get_blob_thumb]);
     }
     #[cfg(feature = "payments")]
-    {
-        rocket = rocket.mount("/", routes::payment::routes());
-    }
+    let lnd = {
+        if let Some(lnd) = settings.payments.as_ref().map(|p| &p.lnd) {
+            let lnd = fedimint_tonic_lnd::connect(
+                lnd.endpoint.clone(),
+                lnd.tls.clone(),
+                lnd.macaroon.clone(),
+            )
+            .await?;
 
-    let jh = start_background_tasks(db, fs);
+            let info = {
+                let mut lnd = lnd.clone();
+                lnd.lightning().get_info(GetInfoRequest::default()).await?
+            };
+
+            info!(
+                "LND connected: {} v{}",
+                info.get_ref().alias,
+                info.get_ref().version
+            );
+            rocket = rocket
+                .manage(lnd.clone())
+                .mount("/", routes::payment::routes());
+            Some(lnd)
+        } else {
+            None
+        }
+    };
+
+    let jh = start_background_tasks(db, fs, lnd);
 
     if let Err(e) = rocket.launch().await {
         error!("Rocker error {}", e);

src/db.rs

@@ -94,6 +94,20 @@ pub struct UserStats {
     pub total_size: u64,
 }
 
+#[cfg(feature = "payments")]
+#[derive(Clone, FromRow, Serialize)]
+pub struct Payment {
+    pub payment_hash: Vec<u8>,
+    pub user_id: u64,
+    pub created: DateTime<Utc>,
+    pub amount: u64,
+    pub is_paid: bool,
+    pub days_value: u64,
+    pub size_value: u64,
+    pub settle_index: u64,
+    pub rate: f32,
+}
+
 #[derive(Clone)]
 pub struct Database {
     pub(crate) pool: sqlx::pool::Pool<sqlx::mysql::MySql>,
@@ -274,3 +288,19 @@ impl Database {
         Ok((results, count))
     }
 }
+
+#[cfg(feature = "payments")]
+impl Database {
+    pub async fn insert_payment(&self, payment: &Payment) -> Result<(), Error> {
+        sqlx::query("insert into payments(payment_hash,user_id,amount,days_value,size_value,rate) values(?,?,?,?,?,?)")
+            .bind(&payment.payment_hash)
+            .bind(&payment.user_id)
+            .bind(&payment.amount)
+            .bind(&payment.days_value)
+            .bind(&payment.size_value)
+            .bind(&payment.rate)
+            .execute(&self.pool)
+            .await?;
+        Ok(())
+    }
+}

src/lib.rs

@@ -5,13 +5,14 @@ pub mod background;
 pub mod cors;
 pub mod db;
 pub mod filesystem;
+#[cfg(feature = "payments")]
+pub mod payments;
 #[cfg(feature = "media-compression")]
 pub mod processing;
 pub mod routes;
 pub mod settings;
 pub mod void_file;
 
-
 pub fn can_compress(mime_type: &str) -> bool {
     mime_type.starts_with("image/")
 }

src/payments.rs

@@ -0,0 +1,53 @@
+use serde::{Deserialize, Serialize};
+use std::fmt::{Display, Formatter};
+
+#[cfg(feature = "payments")]
+#[derive(Debug, Clone, Serialize, Deserialize)]
+pub struct PaymentAmount {
+    pub currency: Currency,
+    pub amount: f32,
+}
+
+#[cfg(feature = "payments")]
+#[derive(Debug, Clone, Serialize, Deserialize)]
+pub enum Currency {
+    BTC,
+    USD,
+    EUR,
+    GBP,
+    JPY,
+    CAD,
+    AUD,
+}
+
+#[cfg(feature = "payments")]
+#[derive(Debug, Clone, Serialize, Deserialize)]
+pub enum PaymentUnit {
+    GBSpace,
+    GBEgress,
+}
+
+impl PaymentUnit {
+    /// Get the total size from a number of units
+    pub fn to_size(&self, units: f32) -> u64 {
+        (1000f32 * 1000f32 * 1000f32 * units) as u64
+    }
+}
+
+impl Display for PaymentUnit {
+    fn fmt(&self, f: &mut Formatter<'_>) -> std::fmt::Result {
+        match self {
+            PaymentUnit::GBSpace => write!(f, "GB Space"),
+            PaymentUnit::GBEgress => write!(f, "GB Egress"),
+        }
+    }
+}
+
+#[cfg(feature = "payments")]
+#[derive(Debug, Clone, Serialize, Deserialize)]
+#[serde(rename_all = "lowercase")]
+pub enum PaymentInterval {
+    Day(u16),
+    Month(u16),
+    Year(u16),
+}

src/routes/payment.rs

@@ -1,12 +1,18 @@
 use crate::auth::nip98::Nip98Auth;
-use crate::db::Database;
-use crate::settings::{PaymentAmount, PaymentInterval, PaymentUnit, Settings};
+use crate::db::{Database, Payment};
+use crate::payments::{Currency, PaymentAmount, PaymentInterval, PaymentUnit};
+use crate::settings::Settings;
+use chrono::{Months, Utc};
+use fedimint_tonic_lnd::lnrpc::Invoice;
+use fedimint_tonic_lnd::Client;
+use log::{error, info};
 use rocket::serde::json::Json;
 use rocket::{routes, Route, State};
 use serde::{Deserialize, Serialize};
+use std::ops::{Add, Deref};
 
 pub fn routes() -> Vec<Route> {
-    routes![get_payment]
+    routes![get_payment, req_payment]
 }
 
 #[derive(Deserialize, Serialize)]
@@ -31,7 +37,9 @@ struct PaymentRequest {
 }
 
 #[derive(Deserialize, Serialize)]
-struct PaymentResponse {}
+struct PaymentResponse {
+    pub pr: String,
+}
 
 #[rocket::get("/payment")]
 async fn get_payment(settings: &State<Settings>) -> Option<Json<PaymentInfo>> {
@@ -49,7 +57,75 @@ async fn req_payment(
     auth: Nip98Auth,
     db: &State<Database>,
     settings: &State<Settings>,
+    lnd: &State<Client>,
     req: Json<PaymentRequest>,
-) -> Json<PaymentResponse> {
-    Json::from(PaymentResponse {})
+) -> Result<Json<PaymentResponse>, String> {
+    let cfg = if let Some(p) = &settings.payments {
+        p
+    } else {
+        return Err("Payment not enabled, missing configuration option(s)".to_string());
+    };
+
+    let btc_amount = match cfg.cost.currency {
+        Currency::BTC => cfg.cost.amount,
+        _ => return Err("Currency not supported".to_string()),
+    };
+
+    let amount = btc_amount * req.units * req.quantity as f32;
+
+    let pubkey_vec = auth.event.pubkey.to_bytes().to_vec();
+    let uid = db
+        .upsert_user(&pubkey_vec)
+        .await
+        .map_err(|_| "Failed to get user account".to_string())?;
+
+    let mut lnd = lnd.deref().clone();
+    let c = lnd.lightning();
+    let msat = (amount * 1e11f32) as u64;
+    let memo = format!(
+        "{}x {} {} for {}",
+        req.quantity, req.units, cfg.unit, auth.event.pubkey
+    );
+    info!("Requesting {} msats: {}", msat, memo);
+    let invoice = c
+        .add_invoice(Invoice {
+            value_msat: msat as i64,
+            memo,
+            ..Default::default()
+        })
+        .await
+        .map_err(|e| e.message().to_string())?;
+
+    let days_value = match cfg.interval {
+        PaymentInterval::Day(d) => d as u64,
+        PaymentInterval::Month(m) => {
+            let now = Utc::now();
+            (now.add(Months::new(m as u32)) - now).num_days() as u64
+        }
+        PaymentInterval::Year(y) => {
+            let now = Utc::now();
+            (now.add(Months::new(12 * y as u32)) - now).num_days() as u64
+        }
+    };
+
+    let record = Payment {
+        payment_hash: invoice.get_ref().payment_addr.clone(),
+        user_id: uid,
+        created: Default::default(),
+        amount: msat,
+        is_paid: false,
+        days_value,
+        size_value: cfg.unit.to_size(req.units),
+        settle_index: 0,
+        rate: 0.0,
+    };
+
+    if let Err(e) = db.insert_payment(&record).await {
+        error!("Failed to insert payment: {}", e);
+        return Err("Failed to insert payment".to_string());
+    }
+
+    Ok(Json(PaymentResponse {
+        pr: invoice.get_ref().payment_request.clone(),
+    }))
 }

src/settings.rs

@@ -1,3 +1,5 @@
+#[cfg(feature = "payments")]
+use crate::payments::{Currency, PaymentAmount, PaymentInterval, PaymentUnit};
 use serde::{Deserialize, Serialize};
 use std::path::PathBuf;
 
@@ -63,41 +65,6 @@ pub struct PaymentConfig {
     pub fiat: Option<Currency>,
 }
 
-#[cfg(feature = "payments")]
-#[derive(Debug, Clone, Serialize, Deserialize)]
-pub struct PaymentAmount {
-    pub currency: Currency,
-    pub amount: f32,
-}
-
-#[cfg(feature = "payments")]
-#[derive(Debug, Clone, Serialize, Deserialize)]
-pub enum Currency {
-    BTC,
-    USD,
-    EUR,
-    GBP,
-    JPY,
-    CAD,
-    AUD,
-}
-
-#[cfg(feature = "payments")]
-#[derive(Debug, Clone, Serialize, Deserialize)]
-pub enum PaymentUnit {
-    GBSpace,
-    GBEgress,
-}
-
-#[cfg(feature = "payments")]
-#[derive(Debug, Clone, Serialize, Deserialize)]
-#[serde(rename_all = "lowercase")]
-pub enum PaymentInterval {
-    Day(u16),
-    Month(u16),
-    Year(u16),
-}
-
 #[cfg(feature = "payments")]
 #[derive(Debug, Clone, Serialize, Deserialize)]
 pub struct LndConfig {