feat: functional L1 signet faucet + TOML config

also:
- justfile for scripts
- sats_per_claim is now 10m
- moved background tasks around
- POW now uses `[u8; 8]` instead of a u64
- switch from matches to map_errs

.gitignore

@@ -15,4 +15,5 @@ target/
 #  and can be added to the global gitignore or merged into this file.  For a more nuclear
 #  option (not recommended) you can uncomment the following to ignore the entire idea folder.
 #.idea/
-faucet.*
+faucet.seed
+faucet.sqlite

Cargo.toml

@@ -1,5 +1,5 @@
 [package]
-name = "faucet-api"
+name = "alpen-faucet"
 version = "0.1.0"
 edition = "2021"
 
@@ -19,6 +19,7 @@ bdk_esplora = { version = "0.18.0", features = [
 bdk_wallet = { version = "1.0.0-beta.4", features = ["rusqlite"] }
 colored = "2.1.0"
 concurrent-map = "5.0.37"
+config = { version = "0.14.0", features = ["toml"], default-features = false }
 parking_lot = "0.12.3"
 rand = "0.8.5"
 serde = { version = "1.0.210", features = ["derive"] }

faucet.toml

@@ -0,0 +1,8 @@
+host = "127.0.0.1"
+port = 3000
+ip_src = "ConnectInfo"
+seed_file = "faucet.seed"
+sqlite_file = "faucet.sqlite"
+network = "signet"
+esplora = "https://explorer.bc-2.jp/api"
+sats_per_claim = 10_000_000

justfile

@@ -0,0 +1,13 @@
+t:
+    cargo t
+
+fmt:
+    rustfmt +nightly **/*.rs
+
+clippy:
+    cargo clippy --all-features -- -D warnings
+
+enable-hooks:
+    echo "#!/bin/sh\njust pre-commit" > .git/hooks/pre-commit
+
+pre-commit: fmt clippy t

src/hex.rs

@@ -2,11 +2,12 @@
 
 use std::ops::{Deref, DerefMut};
 
-use crate::err;
 use axum::{body::Body, http::Response, response::IntoResponse};
 use serde::{de, Deserialize, Deserializer, Serialize, Serializer};
 use terrors::OneOf;
 
+use crate::err;
+
 pub struct Hex<T: AsRef<[u8]>>(pub T);
 
 impl<T: AsRef<[u8]>> IntoResponse for Hex<T> {
@@ -38,6 +39,18 @@ impl<'de> Deserialize<'de> for Hex<Vec<u8>> {
     }
 }
 
+impl<'de, const N: usize> Deserialize<'de> for Hex<[u8; N]> {
+    fn deserialize<D>(deserializer: D) -> Result<Self, D::Error>
+    where
+        D: Deserializer<'de>,
+    {
+        let hex_string = String::deserialize(deserializer)?;
+        let mut buf = [0; N];
+        decode(&hex_string, &mut buf).map_err(|e| de::Error::custom(format!("{e:?}")))?;
+        Ok(Hex(buf))
+    }
+}
+
 impl<T: AsRef<[u8]>> Deref for Hex<T> {
     type Target = T;