move config to global config

examples/global_config.rs

@@ -0,0 +1,52 @@
+use serde::{Deserialize, Serialize};
+use serde_yaml::{self};
+use std::{fs::File};
+
+use once_cell::sync::OnceCell;
+
+#[derive(Debug, Serialize, Deserialize, Clone)]
+pub struct Config {
+    pub general: General,
+    pub mail: Mail,
+}
+
+#[derive(Debug, Serialize, Deserialize, Clone)]
+pub struct General {
+    pub stop_threshold: f64,
+}
+
+#[derive(Debug, Serialize, Deserialize, Clone)]
+pub struct Mail {
+    pub subject: String,
+    pub smtp_server: String,
+    pub starttls: bool,
+    pub sender_addr: String,
+    pub sender_pass: String,
+    pub recipient: String,
+    pub mail_level: String,
+}
+
+static INSTANCE: OnceCell<Config> = OnceCell::new();
+
+impl Config {
+    fn new() -> Self {
+        let config_path = "/etc/ffplayout/ffplayout.yml".to_string();
+        let f = File::open(&config_path).unwrap();
+
+        let config: Config = serde_yaml::from_reader(f).expect("Could not read config file.");
+
+        config
+    }
+
+    pub fn init() -> &'static Config {
+        INSTANCE.get().expect("Config is not initialized")
+    }
+}
+
+pub fn main() {
+    let config = Config::new();
+    INSTANCE.set(config).unwrap();
+    let config = Config::init();
+
+    println!("{:#?}", config);
+}