Initial commit

breadlock-ui/src/config.rs

@@ -0,0 +1,111 @@
+use serde::Deserialize;
+use std::path::Path;
+
+/// Appearance settings shared by `breadlock.toml` and `breadgreet.toml`.
+/// `breadgreet` embeds this and adds its own `[sessions]` table.
+#[derive(Debug, Clone, Default, Deserialize)]
+#[serde(default)]
+pub struct Appearance {
+    pub background: Background,
+    pub clock: Clock,
+    pub font: Font,
+}
+
+#[derive(Debug, Clone, Copy, PartialEq, Eq, Deserialize)]
+#[serde(rename_all = "lowercase")]
+pub enum BackgroundMode {
+    Color,
+    Image,
+}
+
+#[derive(Debug, Clone, Deserialize)]
+#[serde(default)]
+pub struct Background {
+    pub mode: BackgroundMode,
+    pub path: String,
+    /// v2 feature flag — no-op (with a warning) in v1, which only supports a
+    /// static color or image background.
+    pub blur: bool,
+}
+
+impl Default for Background {
+    fn default() -> Self {
+        Self {
+            mode: BackgroundMode::Color,
+            path: String::new(),
+            blur: false,
+        }
+    }
+}
+
+#[derive(Debug, Clone, Deserialize)]
+#[serde(default)]
+pub struct Clock {
+    pub format: String,
+}
+
+impl Default for Clock {
+    fn default() -> Self {
+        Self {
+            format: "%H:%M".to_string(),
+        }
+    }
+}
+
+#[derive(Debug, Clone, Deserialize)]
+#[serde(default)]
+pub struct Font {
+    pub family: String,
+}
+
+impl Default for Font {
+    fn default() -> Self {
+        Self {
+            family: bread_theme::tokens::FONT_FAMILY
+                .split(',')
+                .next()
+                .unwrap_or("Varela Round")
+                .trim()
+                .to_string(),
+        }
+    }
+}
+
+/// Reads and parses a TOML config file, falling back to `T::default()` if the
+/// file is missing or malformed — every bread* app runs with sensible
+/// defaults and no required config.
+pub fn load_or_default<T: serde::de::DeserializeOwned + Default>(path: &Path) -> T {
+    std::fs::read_to_string(path)
+        .ok()
+        .and_then(|s| toml::from_str(&s).ok())
+        .unwrap_or_default()
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    fn defaults_match_design_system() {
+        let a = Appearance::default();
+        assert_eq!(a.background.mode, BackgroundMode::Color);
+        assert_eq!(a.clock.format, "%H:%M");
+        assert_eq!(a.font.family, "Varela Round");
+    }
+
+    #[test]
+    fn missing_file_falls_back_to_default() {
+        let a: Appearance = load_or_default(Path::new("/nonexistent/breadlock-test.toml"));
+        assert_eq!(a.font.family, "Varela Round");
+    }
+
+    #[test]
+    fn parses_partial_toml_with_defaults_for_rest() {
+        let dir = std::env::temp_dir().join("breadlock-ui-test-partial.toml");
+        std::fs::write(&dir, "[clock]\nformat = \"%I:%M %p\"\n").unwrap();
+        let a: Appearance = load_or_default(&dir);
+        assert_eq!(a.clock.format, "%I:%M %p");
+        assert_eq!(a.background.mode, BackgroundMode::Color);
+        std::fs::remove_file(&dir).ok();
+    }
+}