Some POC nodejs bindings

Cargo.toml

@@ -81,11 +81,14 @@ android_logger = { version = "0.10.0", optional = true }
 rocket = { version = "0.5.0-rc.2", features = ["json"], optional = true }
 dotenv = { version = "0.15.0", optional = true }
 
+node-bindgen = { version = "4.0", optional = true }
+
 [features]
 ledger = ["ledger-apdu", "hmac", "ed25519-bip32", "ledger-transport-hid"]
 ledger_sapling = ["ledger"]
 dart_ffi = ["allo-isolate", "once_cell", "android_logger"]
 rpc = ["rocket", "dotenv"]
+nodejs = ["node-bindgen"]
 
 # librustzcash synced to 35023ed8ca2fb1061e78fd740b640d4eefcc5edd
 

README.md

@@ -35,4 +35,26 @@ get_balance,
 get_address,
 get_tx_history,
 pay,
+```
+
+## NodeJS
+
+NodeJS bindings are incomplete/unsupported and maybe dropped at any time.
+
+- Install `nj-cli` (one time)
+- Edit `Cargo.toml`
+- Build
+- Use
+
+Ex:
+```
+$ cargo install nj-cli
+$ vim Cargo.toml
+...
+[lib]
+#name = "warp_api_ffi"
+crate-type = ["cdylib"]
+...
+$ nj-cli build --release -- --features=nodejs
+$ node warp.js
 ```

src/lib.rs

@@ -89,3 +89,6 @@ pub use crate::ledger::sapling::build_tx_ledger;
 
 #[cfg(feature = "ledger")]
 pub use crate::ledger::sweep_ledger;
+
+#[cfg(feature = "nodejs")]
+pub mod nodejs;

src/nodejs.rs

@@ -0,0 +1,25 @@
+#![allow(non_snake_case)]
+use node_bindgen::derive::node_bindgen;
+
+#[node_bindgen]
+fn initCoin(coin: u32, db_path: String, lwd_url: String) {
+    let coin = coin as u8;
+    log::info!("Init coin");
+    crate::init_coin(coin, &db_path).unwrap();
+    crate::set_coin_lwd_url(coin, &lwd_url);
+}
+
+#[node_bindgen]
+fn newAccount(
+    coin: u32,
+    name: String,
+) {
+    crate::api::account::new_account(coin as u8, &name, None, None).unwrap();
+}
+
+// Does not support tokio async executor atm
+#[tokio::main]
+#[node_bindgen]
+async fn warp(coin: u32) {
+    crate::api::sync::coin_sync(coin as u8, true, 0, move |height| {}).await.unwrap();
+}

warp.js

@@ -0,0 +1,6 @@
+const warp = require('./dist/index.node')
+
+warp.initCoin(0, "./zec.db", "https://mainnet.lightwalletd.com:9067")
+// warp.newAccount(0, "test_account")
+warp.warp(0)
+console.log("Finished")