Add TOML parsing

unshell-server/src/config/mod.rs

@@ -1 +1,97 @@
+use std::{
+    collections::HashMap,
+    error::Error,
+    fs,
+    path::{Path, PathBuf},
+};
 
+use unshell_lib::debug;
+
+#[derive(Debug, Clone, serde::Deserialize, serde::Serialize)]
+pub struct ComponentMetadata {
+    name: String,
+    description: Option<String>,
+    version: Option<String>,
+    authors: Option<Vec<String>>,
+
+    // Struct to contain build information
+    build_config: BuildConfig,
+
+    // Other components that can be pointed to by this component
+    #[serde(default)]
+    child_components: Vec<PathBuf>,
+    // config: Option<HashMap<String, ConfigStructField>>,
+}
+
+#[derive(Debug, Clone, serde::Deserialize, serde::Serialize)]
+struct BuildConfig {
+    // Cargo feature list of a component
+    // (Name, Description)
+    #[serde(default)]
+    features: HashMap<String, String>,
+}
+
+#[derive(Debug, Clone, serde::Deserialize, serde::Serialize)]
+enum ConfigStructField {
+    Header(String),
+    Text(String),
+    String {
+        // Default value of string edit in struct
+        #[serde(default)]
+        default: String,
+        max_length: Option<usize>,
+        // Display string edit as password
+        #[serde(default)]
+        protected: Option<bool>,
+    },
+    Integer {
+        // Default value of integer in struct
+        #[serde(default)]
+        default: i32,
+        min: Option<i32>,
+        max: Option<i32>,
+    },
+    // Checkbox
+    // Dropdown
+    // Collapsing header
+    // Slider
+    // ...
+}
+
+pub fn load_config(path: &PathBuf) -> Result<Vec<ComponentMetadata>, Box<dyn Error>> {
+    let path_absolute = fs::canonicalize(path.clone())?;
+    debug!("Loading data from path: `{}`", path_absolute);
+
+    // Read string as path
+    let config_str = fs::read_to_string(path.clone())?;
+
+    // Load config from String
+    let config = toml::from_str::<ComponentMetadata>(&config_str)?;
+
+    if config.child_components.is_empty() {
+        Ok(vec![config])
+    } else {
+        let parent_path = path_absolute.parent().expect("Path must have parent");
+
+        let mut config_vec = vec![];
+
+        // Load each child component
+        for component_path in &config.child_components {
+            let path = Path::join(parent_path, component_path);
+            let mut config = load_config(&path)?;
+            config_vec.append(&mut config);
+        }
+
+        config_vec.insert(0, config);
+
+        Ok(config_vec)
+    }
+}
+
+// pub fn parse_toml() -> ComponentMetadata {
+//     let data = include_str!("../../test.toml");
+
+//     let config = toml::from_str(data).unwrap();
+
+//     config
+// }