load audio from user data dir and create UI

Cargo.toml

@@ -6,6 +6,7 @@ authors = ["Max Bradbury <max@tinybird.info>"]
 edition = "2018"
 
 [dependencies]
+dirs = "^3.0.1"
 gio = "^0"
 gtk = "^0"
 rodio = "^0.11.0"

src/main.rs

@@ -14,29 +14,74 @@ fn build_ui(application: &gtk::Application) {
     window.set_title("lull");
     window.set_border_width(SPACING as u32);
     window.set_position(gtk::WindowPosition::Center);
-    window.set_default_size(400, 100);
+    window.set_default_size(256, 256);
 
     let vertical = gtk::Box::new(Orientation::Vertical, SPACING);
+    vertical.set_homogeneous(true);
+
     window.add(&vertical);
 
-    // todo create user dir if it does not exist
-
-    // todo open user dir in file browser if it is empty
-
-    // todo iterate over audio files in user dir
-        // todo create row for each audio file
-
-    window.show_all();
-
     let device = rodio::default_output_device().unwrap();
 
-    let file = File::open("/home/max/being-harsh.mp3")
-        .expect("Couldn't open audio file");
+    let mut data_dir = dirs::data_dir().expect("Couldn't find user data directory");
 
-    let source = rodio::Decoder::new(BufReader::new(file))
-        .expect("Couldn't decode audio");
+    data_dir.push("ruin/lull");
 
-    rodio::play_raw(&device, source.convert_samples());
+    if !data_dir.exists() {
+        std::fs::create_dir_all(&data_dir).expect("Couldn't create lull data directory");
+    }
+
+    let paths = std::fs::read_dir(&data_dir)
+        .expect("Couldn't read from lull data directory");
+
+    for path in paths {
+        let path = path.unwrap().path();
+        let name: &str = path.file_stem().unwrap().to_str().unwrap();
+
+        let file = File::open(&path)
+            .expect("Couldn't open audio file");
+
+        let source = rodio::Decoder::new(BufReader::new(file))
+            .expect("Couldn't decode audio");
+
+        rodio::play_raw(&device, source.convert_samples());
+
+        let row = gtk::Box::new(Orientation::Horizontal, SPACING);
+        row.set_homogeneous(true);
+
+        let label = gtk::Label::new(Some(name));
+        row.add(&label);
+
+        let adjustment = gtk::Adjustment::new(
+            0.0,
+            0.0,
+            1.0,
+            0.0,
+            0.0,
+            0.0
+        );
+
+        let slider = gtk::Scale::new(
+            Orientation::Horizontal,
+            Some(&adjustment)
+        );
+
+        slider.set_draw_value(false);
+
+        row.add(&slider);
+
+        vertical.add(&row);
+    }
+
+    let row_add = gtk::Box::new(Orientation::Horizontal, SPACING);
+    row_add.set_homogeneous(true);
+
+    let button_open_dir = gtk::Button::with_label("add more");
+    row_add.add(&button_open_dir);
+
+    vertical.add(&row_add);
+
+    window.show_all();
 }
 
 fn main() {