basic z2m-utilsHEADmaster

1 files changed, 64 insertions, 0 deletions

diff --git a/src/config.rs b/src/config.rs
new file mode 100644
index 0000000..e8a4287
--- /dev/null
+++ b/src/config.rs
@@ -0,0 +1,64 @@
+use std::{fs::File, io::Read, process, time::Duration};
+
+use rumqttc::{Client, Connection, MqttOptions};
+use serde::Deserialize;
+
+use crate::PROGRAM;
+
+#[derive(Deserialize)]
+pub struct Credentials {
+    pub username: String,
+    pub password: String,
+}
+
+fn default_host() -> String {
+    "localhost".to_string()
+}
+
+fn default_port() -> u16 {
+    1883
+}
+
+fn default_id_prefix() -> String {
+    PROGRAM.to_string()
+}
+
+#[derive(Deserialize)]
+pub struct Config {
+    #[serde(default = "default_host")]
+    pub host: String,
+    #[serde(default = "default_port")]
+    pub port: u16,
+    #[serde(default = "default_id_prefix")]
+    pub id_prefix: String,
+    pub credentials: Option<Credentials>,
+}
+
+impl Config {
+    pub fn mqtt_client(&self) -> (Client, Connection) {
+        let client_id = format!("{}_{}", self.id_prefix, process::id());
+        let mut options = MqttOptions::new(client_id, &self.host, self.port);
+        if let Some(credentials) = &self.credentials {
+            options.set_credentials(&credentials.username, &credentials.password);
+        }
+        options.set_keep_alive(Duration::from_secs(5));
+        Client::new(options, 10)
+    }
+}
+
+pub fn get() -> Config {
+    let config = if let Ok(dirs) = xdg::BaseDirectories::with_prefix(PROGRAM) {
+        if let Some(config_file) = dirs.find_config_file("config.toml") {
+            let mut config_file = File::open(config_file).unwrap();
+            let mut config = String::new();
+            config_file.read_to_string(&mut config).unwrap();
+            Some(config)
+        } else {
+            None
+        }
+    } else {
+        None
+    };
+    let config = config.unwrap_or_default();
+    toml::from_str(&config).unwrap()
+}