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use controller;
use core::libtx::slate::Slate;
use failure::ResultExt;
use libwallet::{Error, ErrorKind};
use serde::Serialize;
use serde_json::{from_str, to_string, Value};
use std::collections::{HashMap, HashSet};
use std::process::{Command, Stdio};
use std::str::from_utf8;
use std::thread::sleep;
use std::time::{Duration, Instant};
use {instantiate_wallet, WalletCommAdapter, WalletConfig};
const TTL: u16 = 60;
const SLEEP_DURATION: Duration = Duration::from_millis(5000);
const SLATE_NEW: &str = "grin_slate_new";
const SLATE_SIGNED: &str = "grin_slate_signed";
#[derive(Clone)]
pub struct KeybaseWalletCommAdapter {}
impl KeybaseWalletCommAdapter {
pub fn new() -> Box<WalletCommAdapter> {
let mut proc = if cfg!(target_os = "windows") {
Command::new("where")
} else {
Command::new("which")
};
proc.arg("keybase")
.stdout(Stdio::null())
.status()
.expect("Keybase executable not found, make sure it is installed and in your PATH");
Box::new(KeybaseWalletCommAdapter {})
}
}
fn api_send(payload: &str) -> Value {
let mut proc = Command::new("keybase");
proc.args(&["chat", "api", "-m", &payload]);
let output = proc.output().expect("No output").stdout;
let response: Value = from_str(from_utf8(&output).expect("Bad output")).expect("Bad output");
response
}
fn read_from_channel(channel: &str, topic: &str) -> Vec<String> {
let payload = to_string(&json!({
"method": "read",
"params": {
"options": {
"channel": {
"name": channel, "topic_type": "dev", "topic_name": topic
},
"unread_only": true, "peek": false
},
}
}
)).unwrap();
let response = api_send(&payload);
let mut unread: Vec<String> = Vec::new();
for msg in response["result"]["messages"]
.as_array()
.unwrap_or(&vec![json!({})])
.iter()
{
if (msg["msg"]["content"]["type"] == "text") && (msg["msg"]["unread"] == true) {
let message = msg["msg"]["content"]["text"]["body"].as_str().unwrap_or("");
unread.push(message.to_owned());
}
}
unread
}
fn get_unread(topic: &str) -> HashMap<String, String> {
let payload = to_string(&json!({
"method": "list",
"params": {
"options": {
"topic_type": "dev",
},
}
}
)).unwrap();
let response = api_send(&payload);
let mut channels = HashSet::new();
for msg in response["result"]["conversations"]
.as_array()
.unwrap_or(&vec![json!({})])
.iter()
{
if (msg["unread"] == true) && (msg["channel"]["topic_name"] == topic) {
let channel = msg["channel"]["name"].as_str().unwrap();
channels.insert(channel.to_string());
}
}
let mut unread: HashMap<String, String> = HashMap::new();
for channel in channels.iter() {
let messages = read_from_channel(channel, topic);
for msg in messages {
unread.insert(msg, channel.to_string());
}
}
unread
}
fn send<T: Serialize>(message: T, channel: &str, topic: &str, ttl: u16) -> bool {
let seconds = format!("{}s", ttl);
let payload = to_string(&json!({
"method": "send",
"params": {
"options": {
"channel": {
"name": channel, "topic_name": topic, "topic_type": "dev"
},
"message": {
"body": to_string(&message).unwrap()
},
"exploding_lifetime": seconds
}
}
}
)).unwrap();
let response = api_send(&payload);
match response["result"]["message"].as_str() {
Some("message sent") => true,
_ => false,
}
}
fn poll(nseconds: u64, channel: &str) -> Option<Slate> {
let start = Instant::now();
println!("Waiting for message from {}...", channel);
while start.elapsed().as_secs() < nseconds {
let unread = read_from_channel(channel, SLATE_SIGNED);
for msg in unread.iter() {
let blob = from_str::<Slate>(msg);
match blob {
Ok(slate) => {
println!("Received message from {}", channel);
return Some(slate);
}
Err(_) => (),
}
}
sleep(SLEEP_DURATION);
}
println!(
"Did not receive reply from {} in {} seconds",
channel, nseconds
);
None
}
impl WalletCommAdapter for KeybaseWalletCommAdapter {
fn supports_sync(&self) -> bool {
true
}
fn send_tx_sync(&self, addr: &str, slate: &Slate) -> Result<Slate, Error> {
match send(slate, addr, SLATE_NEW, TTL) {
true => (),
false => return Err(ErrorKind::ClientCallback("Posting transaction slate"))?,
}
println!("Sent new slate to {}", addr);
match poll(TTL as u64, addr) {
Some(slate) => return Ok(slate),
None => return Err(ErrorKind::ClientCallback("Receiving reply from recipient"))?,
}
}
fn send_tx_async(&self, _addr: &str, _slate: &Slate) -> Result<(), Error> {
unimplemented!();
}
fn receive_tx_async(&self, _params: &str) -> Result<Slate, Error> {
unimplemented!();
}
#[allow(unreachable_code)]
fn listen(
&self,
_params: HashMap<String, String>,
config: WalletConfig,
passphrase: &str,
account: &str,
node_api_secret: Option<String>,
) -> Result<(), Error> {
let wallet =
instantiate_wallet(config.clone(), passphrase, account, node_api_secret.clone())
.context(ErrorKind::WalletSeedDecryption)?;
println!("Listening for messages via keybase chat...");
loop {
let unread = get_unread(SLATE_NEW);
for (msg, channel) in &unread {
let blob = from_str::<Slate>(msg);
match blob {
Ok(mut slate) => {
println!("Received message from channel {}", channel);
match controller::foreign_single_use(wallet.clone(), |api| {
api.receive_tx(&mut slate, None, None)?;
Ok(())
}) {
Ok(_) => match send(slate, channel, SLATE_SIGNED, TTL) {
true => {
println!("Returned slate to {}", channel);
}
false => {
println!("Failed to return slate to {}", channel);
}
},
Err(e) => {
println!("Error : {}", e);
}
}
}
Err(_) => (),
}
}
sleep(SLEEP_DURATION);
}
Ok(())
}
}