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use http_req::request;
use serde::{Deserialize, Serialize};
const BN_API_PREFIX: &str = "https://bn-flows-js.vercel.app/api";
extern "C" {
fn is_listening() -> i32;
fn get_flows_user(p: *mut u8) -> i32;
fn get_flow_id(p: *mut u8) -> i32;
fn get_event_body_length() -> i32;
fn get_event_body(p: *mut u8) -> i32;
fn set_error_log(p: *const u8, len: i32);
}
#[derive(Debug, Serialize, Deserialize)]
#[serde(rename_all = "camelCase")]
pub struct Event {
pub status: String,
pub monitor_id: String,
pub monitor_version: String,
pub time_pending: Option<String>,
pub blocks_pending: Option<i64>,
pub pending_time_stamp: String,
pub pending_block_number: i64,
pub hash: String,
pub from: String,
pub to: String,
pub value: String,
pub gas: i64,
pub nonce: i64,
pub block_hash: Option<String>,
pub block_number: Option<i64>,
pub v: String,
pub r: String,
pub s: String,
pub input: String,
pub gas_used: Option<i64>,
#[serde(rename = "type")]
pub type_field: i64,
pub max_fee_per_gas: String,
pub max_fee_per_gas_gwei: f64,
pub max_priority_fee_per_gas: String,
pub max_priority_fee_per_gas_gwei: f64,
pub base_fee_per_gas: Option<String>,
pub base_fee_per_gas_gwei: Option<f64>,
pub transaction_index: Option<i64>,
pub asset: String,
pub block_time_stamp: Option<String>,
pub watched_address: String,
pub direction: String,
pub counterparty: String,
pub server_version: String,
pub event_code: String,
pub time_stamp: String,
pub dispatch_timestamp: String,
pub system: String,
pub network: String,
}
pub fn revoke_listeners() {
unsafe {
let mut flows_user = Vec::<u8>::with_capacity(100);
let c = get_flows_user(flows_user.as_mut_ptr());
flows_user.set_len(c as usize);
let flows_user = String::from_utf8(flows_user).unwrap();
let mut flow_id = Vec::<u8>::with_capacity(100);
let c = get_flow_id(flow_id.as_mut_ptr());
if c == 0 {
panic!("Failed to get flow id");
}
flow_id.set_len(c as usize);
let flow_id = String::from_utf8(flow_id).unwrap();
let mut writer = Vec::new();
let res = request::get(
format!("{}/{}/{}/revoke", BN_API_PREFIX, flows_user, flow_id),
&mut writer,
)
.unwrap();
match res.status_code().is_success() {
true => (),
false => {
set_error_log(writer.as_ptr(), writer.len() as i32);
}
}
}
}
pub fn event_received(address: &str) -> Option<Event> {
unsafe {
match is_listening() {
1 => {
let mut flows_user = Vec::<u8>::with_capacity(100);
let c = get_flows_user(flows_user.as_mut_ptr());
flows_user.set_len(c as usize);
let flows_user = String::from_utf8(flows_user).unwrap();
let mut flow_id = Vec::<u8>::with_capacity(100);
let c = get_flow_id(flow_id.as_mut_ptr());
if c == 0 {
panic!("Failed to get flow id");
}
flow_id.set_len(c as usize);
let flow_id = String::from_utf8(flow_id).unwrap();
let mut writer = Vec::new();
let res = request::get(
format!(
"{}/{}/{}/listen?address={}",
BN_API_PREFIX, flows_user, flow_id, address
),
&mut writer,
)
.unwrap();
match res.status_code().is_success() {
true => serde_json::from_slice::<Event>(&writer).ok(),
false => {
set_error_log(writer.as_ptr(), writer.len() as i32);
None
}
}
}
_ => event_from_subcription(),
}
}
}
fn event_from_subcription() -> Option<Event> {
unsafe {
let l = get_event_body_length();
let mut event_body = Vec::<u8>::with_capacity(l as usize);
let c = get_event_body(event_body.as_mut_ptr());
assert!(c == l);
event_body.set_len(c as usize);
match serde_json::from_slice::<Event>(&event_body) {
Ok(e) => Some(e),
Err(_) => None,
}
}
}