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use serde::{Deserialize, Serialize}; use std::{env, fs}; #[derive(Serialize, Deserialize, Clone)] pub struct Client { #[serde(default)] pub api_uri: String, #[serde(default)] pub stream_uri: String, pub key: String } impl Client { fn merge(&mut self, other: Client) { if !other.api_uri.is_empty() { self.api_uri = other.api_uri; } if !other.stream_uri.is_empty() { self.stream_uri = other.stream_uri; } if !other.key.is_empty() { self.key = other.key; } } pub fn open(path: &str) -> Client { let mut res: Client = Default::default(); if let Ok(config_str) = fs::read_to_string(path) { match serde_json::from_str::<Client>(&config_str) { Ok(config) => res.merge(config), Err(e) => { eprintln!( "Error loading {}, falling back to default config: {}", path, e ); } }; } res.merge(Client { key: env::var("POLYGON_KEY").unwrap_or_default(), api_uri: env::var("POLYGON_API_URI").unwrap_or_default(), stream_uri: env::var("POLYGON_STREAM_URI").unwrap_or_default() }); res } pub fn new() -> Client { Client::open("polygon.json") } } impl Default for Client { fn default() -> Self { Self { api_uri: String::from("https://api.polygon.io"), stream_uri: String::from("wss://socket.polygon.io"), key: String::new() } } }