Extract config into cove-config crate

cove-config/src/lib.rs

@@ -0,0 +1,70 @@
+#![forbid(unsafe_code)]
+// Rustc lint groups
+#![warn(future_incompatible)]
+#![warn(rust_2018_idioms)]
+#![warn(unused)]
+// Rustc lints
+#![warn(noop_method_call)]
+#![warn(single_use_lifetimes)]
+// Clippy lints
+#![warn(clippy::use_self)]
+
+use std::collections::HashMap;
+use std::fs;
+use std::path::{Path, PathBuf};
+
+use serde::Deserialize;
+
+#[derive(Debug, Clone, Copy, Default, Deserialize)]
+#[serde(rename_all = "snake_case")]
+pub enum RoomsSortOrder {
+    #[default]
+    Alphabet,
+    Importance,
+}
+
+#[derive(Debug, Clone, Default, Deserialize)]
+pub struct EuphRoom {
+    // TODO Mark favourite rooms via printable ascii characters
+    #[serde(default)]
+    pub autojoin: bool,
+    pub username: Option<String>,
+    #[serde(default)]
+    pub force_username: bool,
+    pub password: Option<String>,
+}
+
+#[derive(Debug, Default, Deserialize)]
+pub struct Euph {
+    pub rooms: HashMap<String, EuphRoom>,
+}
+
+#[derive(Debug, Default, Deserialize)]
+pub struct Config {
+    pub data_dir: Option<PathBuf>,
+    #[serde(default)]
+    pub ephemeral: bool,
+    #[serde(default)]
+    pub offline: bool,
+    #[serde(default)]
+    pub rooms_sort_order: RoomsSortOrder,
+    // TODO Invoke external notification command?
+    pub euph: Euph,
+}
+
+impl Config {
+    pub fn load(path: &Path) -> Self {
+        let Ok(content) = fs::read_to_string(path) else { return Self::default(); };
+        match toml::from_str(&content) {
+            Ok(config) => config,
+            Err(err) => {
+                eprintln!("Error loading config file: {err}");
+                Self::default()
+            }
+        }
+    }
+
+    pub fn euph_room(&self, name: &str) -> EuphRoom {
+        self.euph.rooms.get(name).cloned().unwrap_or_default()
+    }
+}