feat(notcore): add shared types, config, paths, error crate

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

crates/notcore/src/config.rs

@@ -0,0 +1,162 @@
+use serde::{Deserialize, Serialize};
+use std::collections::HashMap;
+use std::path::Path;
+
+use crate::NotfilesError;
+
+#[derive(Debug, Clone, Serialize, Deserialize, Default)]
+pub struct Config {
+    #[serde(default)]
+    pub defaults: Defaults,
+    #[serde(default)]
+    pub packages: HashMap<String, PackageConfig>,
+}
+
+#[derive(Debug, Clone, Serialize, Deserialize)]
+pub struct Defaults {
+    #[serde(default = "default_target")]
+    pub target: String,
+    #[serde(default = "default_ignore")]
+    pub ignore: Vec<String>,
+}
+
+impl Default for Defaults {
+    fn default() -> Self {
+        Self {
+            target: default_target(),
+            ignore: default_ignore(),
+        }
+    }
+}
+
+fn default_target() -> String {
+    "~".to_string()
+}
+
+fn default_ignore() -> Vec<String> {
+    vec![
+        ".git".to_string(),
+        ".DS_Store".to_string(),
+        "README.md".to_string(),
+        "LICENSE".to_string(),
+        "notfiles.toml".to_string(),
+        ".notfiles-state.toml".to_string(),
+    ]
+}
+
+#[derive(Debug, Clone, Serialize, Deserialize, Default)]
+pub struct PackageConfig {
+    #[serde(default)]
+    pub method: Option<Method>,
+    pub target: Option<String>,
+    #[serde(default)]
+    pub ignore: Vec<String>,
+}
+
+#[derive(Debug, Clone, Copy, PartialEq, Eq, Serialize, Deserialize, Default)]
+#[serde(rename_all = "lowercase")]
+pub enum Method {
+    #[default]
+    Symlink,
+    Copy,
+}
+
+impl std::fmt::Display for Method {
+    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
+        match self {
+            Method::Symlink => write!(f, "symlink"),
+            Method::Copy => write!(f, "copy"),
+        }
+    }
+}
+
+impl Config {
+    pub fn load(dotfiles_dir: &Path) -> Result<Self, NotfilesError> {
+        let config_path = dotfiles_dir.join("notfiles.toml");
+        if !config_path.exists() {
+            return Ok(Config::default());
+        }
+        let content = std::fs::read_to_string(&config_path)
+            .map_err(|e| NotfilesError::Config(format!("reading {}: {e}", config_path.display())))?;
+        let config: Config = toml::from_str(&content)
+            .map_err(|e| NotfilesError::Config(format!("parsing {}: {e}", config_path.display())))?;
+        Ok(config)
+    }
+
+    pub fn method_for(&self, package: &str) -> Method {
+        self.packages
+            .get(package)
+            .and_then(|p| p.method)
+            .unwrap_or_default()
+    }
+
+    pub fn target_for(&self, package: &str) -> &str {
+        self.packages
+            .get(package)
+            .and_then(|p| p.target.as_deref())
+            .unwrap_or(&self.defaults.target)
+    }
+
+    pub fn ignore_patterns_for(&self, package: &str) -> Vec<&str> {
+        let mut patterns: Vec<&str> = self.defaults.ignore.iter().map(|s| s.as_str()).collect();
+        if let Some(pkg) = self.packages.get(package) {
+            for p in &pkg.ignore {
+                patterns.push(p.as_str());
+            }
+        }
+        patterns
+    }
+}
+
+pub fn starter_toml() -> &'static str {
+    r#"[defaults]
+target = "~"
+ignore = [".git", ".DS_Store", "README.md", "LICENSE", "notfiles.toml"]
+
+# [packages.ssh]
+# method = "copy"
+# ignore = ["known_hosts"]
+#
+# [packages.scripts]
+# target = "~/bin"
+"#
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    fn test_default_config() {
+        let config = Config::default();
+        assert_eq!(config.defaults.target, "~");
+        assert!(config.defaults.ignore.contains(&".git".to_string()));
+        assert_eq!(config.method_for("anything"), Method::Symlink);
+        assert_eq!(config.target_for("anything"), "~");
+    }
+
+    #[test]
+    fn test_parse_config() {
+        let toml_str = r#"
+[defaults]
+target = "~"
+ignore = [".git"]
+
+[packages.ssh]
+method = "copy"
+ignore = ["known_hosts"]
+
+[packages.scripts]
+target = "~/bin"
+"#;
+        let config: Config = toml::from_str(toml_str).unwrap();
+        assert_eq!(config.method_for("ssh"), Method::Copy);
+        assert_eq!(config.method_for("scripts"), Method::Symlink);
+        assert_eq!(config.target_for("scripts"), "~/bin");
+        assert_eq!(config.target_for("ssh"), "~");
+
+        let ssh_ignores = config.ignore_patterns_for("ssh");
+        assert!(ssh_ignores.contains(&".git"));
+        assert!(ssh_ignores.contains(&"known_hosts"));
+    }
+}