make first runnable version

daemon/src/paths.rs

@@ -0,0 +1,36 @@
+use std::path::PathBuf;
+
+pub fn base_dir() -> PathBuf {
+    let mut p = dirs::home_dir().unwrap();
+    p.push(".sjn/music");
+    p
+}
+
+pub fn songs_dir() -> PathBuf {
+    let mut p = base_dir();
+    p.push("songs");
+    p
+}
+
+pub fn song_path(name: &str) -> String {
+    let safe: String = name
+        .chars()
+        .map(|c| {
+            if c.is_alphanumeric() || c == ' ' {
+                c
+            } else {
+                '_'
+            }
+        })
+        .collect();
+
+    let mut p = songs_dir();
+    p.push(format!("{safe}.mp3"));
+    p.to_string_lossy().to_string()
+}
+
+pub fn db_path() -> String {
+    let mut p = base_dir();
+    p.push("songs.db");
+    p.to_string_lossy().to_string()
+}