Added functions to import and export settings and refactoring

src/settings/mod.rs

@@ -1,23 +1,19 @@
 extern crate serde;
 extern crate serde_json;
 extern crate serde_yaml;
-use serde::Deserialize;
+use serde::{Deserialize, Serialize};
 
 extern crate log;
 use log::warn;
 
 // mod utils;
 pub mod utils;
+use utils::SettingsType;
 
 #[allow(dead_code)]
 const RULESET_CURRENT_VERSION: &'static str = "1";
 
-pub enum SettingsType {
-    Yaml,
-    Json,
-}
-
-#[derive(Debug, Deserialize)]
+#[derive(Debug, Deserialize, Serialize)]
 pub struct Settings {
     #[serde(default = "Settings::get_ruleset_version")]
     version: String,
@@ -28,7 +24,6 @@ pub struct Settings {
 }
 
 impl Settings {
-    #[allow(dead_code)]
     pub fn new() -> Self {
         Self {
             version: Self::get_ruleset_version(),
@@ -41,23 +36,39 @@ impl Settings {
         String::from(RULESET_CURRENT_VERSION)
     }
 
+    pub fn export(&self, path: &std::path::Path) -> std::io::Result<()> {
+        let filetype = utils::get_file_type(&path).unwrap();
+        let content = match filetype {
+            SettingsType::Yaml => match serde_yaml::to_string(&self) {
+                Err(e) => {
+                    warn!("Could not serialize settings: {}", e.to_string());
+                    return Err(std::io::Error::new(
+                        std::io::ErrorKind::InvalidData,
+                        e,
+                    ));
+                }
+                Ok(val) => val,
+            },
+            SettingsType::Json => match serde_json::to_string(&self) {
+                Err(e) => {
+                    warn!("Could not serialize settings: {}", e.to_string());
+                    return Err(std::io::Error::new(
+                        std::io::ErrorKind::InvalidData,
+                        e,
+                    ));
+                }
+                Ok(val) => val,
+            },
+        };
+
+        utils::write_file(&path, content)
+    }
+
     #[allow(dead_code)]
-    pub fn import(path: &std::path::PathBuf) -> std::io::Result<Self> {
+    pub fn import(path: &std::path::Path) -> std::io::Result<Self> {
         use SettingsType::*;
         let display = path.display();
-        let extension = path.extension().unwrap();
-        let extension = extension.to_str().unwrap();
-        let method = match extension {
-            "yaml" => Yaml,
-            "json" => Json,
-            _ => {
-                use std::io::{Error, ErrorKind};
-                return Err(Error::new(
-                    ErrorKind::InvalidInput,
-                    "File must have \"yaml\" or \"json\" extension",
-                ));
-            }
-        };
+        let file_type = utils::get_file_type(&path).unwrap();
         let content = match utils::read_file(&path) {
             Err(e) => {
                 warn!("Could not read file {}: {}", display, e.to_string());
@@ -66,7 +77,7 @@ impl Settings {
             Ok(content) => content,
         };
 
-        let settings: Settings = match method {
+        let settings: Settings = match file_type {
             Yaml => match serde_yaml::from_str(&content) {
                 Err(e) => {
                     warn!("Could not import settings: {}", e.to_string());
@@ -92,3 +103,26 @@ impl Settings {
         Ok(settings)
     }
 }
+
+impl PartialEq for Settings {
+    fn eq(&self, other: &Self) -> bool {
+        self.version == other.version
+            && self.categories == other.categories
+            && self.rules == other.rules
+    }
+}
+
+impl Eq for Settings {}
+
+#[test]
+fn write_settings() {
+    let s = Settings::new();
+    let path = std::path::Path::new("test.yaml");
+    let settings = r#"---
+version: "1"
+categories: []
+rules: []"#;
+    utils::write_file(&path, serde_yaml::to_string(&s).unwrap()).unwrap();
+    assert_eq!(settings, utils::read_file(&path).unwrap());
+}
+