Use config folder (#110)

src/config.rs

@@ -0,0 +1,43 @@
+use std::{
+    fs::create_dir_all,
+    path::{Path, PathBuf},
+};
+
+#[cfg(target_family = "unix")]
+pub fn get_config_folder() -> PathBuf {
+    let config_home = std::env::var("XDG_CONFIG_HOME");
+    let home = std::env::var("HOME");
+    match (config_home, home) {
+        (Ok(p), _) => Path::new(&p).to_path_buf(),
+        (Err(_), Ok(home)) => Path::new(&home).join(".config").join("boilr").to_path_buf(),
+        _ => Path::new("").to_path_buf(),
+    }
+}
+
+#[cfg(windows)]
+pub fn get_config_folder() -> PathBuf {
+    let config_home = std::env::var("APPDATA");
+    match config_home {
+        Ok(p) => Path::new(&p).join("boilr").to_path_buf(),
+        Err(_) => Path::new("").to_path_buf(),
+    }
+}
+
+pub fn get_thumbnails_folder() -> PathBuf {
+    let thumbnails_path = get_config_folder().join("thumbnails");
+    let _ = create_dir_all(&thumbnails_path);
+    thumbnails_path.to_path_buf()
+}
+
+pub fn get_config_file() -> PathBuf {
+    get_config_folder().join("config.toml").to_path_buf()
+}
+
+pub fn get_cache_file() -> PathBuf {
+    get_config_folder().join("cache.json").to_path_buf()
+}
+
+#[cfg(target_family = "unix")]
+pub fn get_boilr_links_path() -> PathBuf {
+    get_config_folder().join("links").to_path_buf()
+}