Polling keyboard in daemon. Split into app/lib

rog-core/src/config.rs

@@ -0,0 +1,47 @@
+use crate::CONFIG_PATH;
+use rog_lib::{aura::SetAuraBuiltin, core::LED_MSG_LEN};
+use serde_derive::{Deserialize, Serialize};
+use std::fs::{File, OpenOptions};
+use std::io::{Read, Write};
+
+#[derive(Default, Deserialize, Serialize)]
+pub(crate) struct Config {
+    pub brightness: u8,
+    pub builtin: Vec<u8>,
+}
+
+impl Config {
+    pub fn read(mut self) -> Self {
+        let mut file = OpenOptions::new()
+            .read(true)
+            .write(true)
+            .create(true)
+            .open(&CONFIG_PATH)
+            .expect("config file error");
+        let mut buf = String::new();
+        if let Ok(l) = file.read_to_string(&mut buf) {
+            if l == 0 {
+                // create a default config here
+                let d = SetAuraBuiltin::default();
+                let c = Config {
+                    brightness: 1u8,
+                    builtin: (<[u8; LED_MSG_LEN]>::from(d)).to_vec(),
+                };
+                let toml = toml::to_string(&c).unwrap();
+                file.write_all(toml.as_bytes())
+                    .expect("Writing default config failed");
+                self = c;
+            } else {
+                self = toml::from_str(&buf).unwrap();
+            }
+        }
+        self
+    }
+
+    pub fn write(&self) {
+        let mut file = File::create(CONFIG_PATH).expect("Couldn't overwrite config");
+        let toml = toml::to_string_pretty(self).expect("Parse config to JSON failed");
+        file.write_all(toml.as_bytes())
+            .expect("Saving config failed");
+    }
+}