Add folder source to import

src/import/disc_source.rs

@@ -3,6 +3,7 @@ use anyhow::{anyhow, bail, Result};
 use async_trait::async_trait;
 use discid::DiscId;
 use futures_channel::oneshot;
+use gettextrs::gettext;
 use gstreamer::prelude::*;
 use gstreamer::{Element, ElementFactory, Pipeline};
 use once_cell::sync::OnceCell;
@@ -45,6 +46,8 @@ impl DiscSource {
         let tmp_dir = Self::create_tmp_dir()?;
 
         for number in first_track..=last_track {
+            let name = gettext!("Track {}", number);
+
             let file_name = format!("track_{:02}.flac", number);
 
             let mut path = tmp_dir.clone();
@@ -52,6 +55,7 @@ impl DiscSource {
 
             let track = SourceTrack {
                 number,
+                name,
                 path,
             };
 

src/import/folder_source.rs

@@ -0,0 +1,90 @@
+use super::source::{Source, SourceTrack};
+use anyhow::{anyhow, Result};
+use async_trait::async_trait;
+use futures_channel::oneshot;
+use once_cell::sync::OnceCell;
+use std::path::{Path, PathBuf};
+use std::thread;
+
+/// A folder outside of the music library that contains tracks to import.
+#[derive(Clone, Debug)]
+pub struct FolderSource {
+    /// The path to the folder.
+    path: PathBuf,
+
+    /// The tracks within the folder.
+    tracks: OnceCell<Vec<SourceTrack>>,
+}
+
+impl FolderSource {
+    /// Create a new folder source.
+    pub fn new(path: PathBuf) -> Self {
+        Self {
+            path,
+            tracks: OnceCell::new(),
+        }
+    }
+
+    /// Load the contents of the folder as tracks.
+    fn load_priv(path: &Path) -> Result<Vec<SourceTrack>> {
+        let mut tracks = Vec::new();
+        let mut number = 1;
+
+        for entry in std::fs::read_dir(path)? {
+            let entry = entry?;
+
+            if entry.file_type()?.is_file() {
+                let name = entry
+                    .file_name()
+                    .into_string()
+                    .or_else(|_| Err(anyhow!("Failed to convert OsString to String!")))?;
+
+                let path = entry.path();
+
+                let track = SourceTrack {
+                    number,
+                    name,
+                    path,
+                };
+
+                tracks.push(track);
+                number += 1;
+            }
+        }
+
+        Ok(tracks)
+    }
+}
+
+#[async_trait]
+impl Source for FolderSource {
+    async fn load(&self) -> Result<()> {
+        let (sender, receiver) = oneshot::channel();
+
+        let path = self.path.clone();
+        thread::spawn(move || {
+            let result = Self::load_priv(&path);
+            sender.send(result).unwrap();
+        });
+
+        let tracks = receiver.await??;
+        self.tracks.set(tracks);
+
+        Ok(())
+    }
+
+    fn tracks(&self) -> Option<&[SourceTrack]> {
+        match self.tracks.get() {
+            Some(tracks) => Some(tracks.as_slice()),
+            None => None,
+        }
+    }
+
+    fn discid(&self) -> Option<String> {
+        None
+    }
+
+    async fn copy(&self) -> Result<()> {
+        Ok(())
+    }
+}

src/import/mod.rs

@@ -1,4 +1,5 @@
 mod disc_source;
+mod folder_source;
 mod medium_editor;
 mod source;
 mod source_selector;

src/import/source.rs

@@ -27,6 +27,10 @@ pub struct SourceTrack {
     /// the track numbers start.
     pub number: u32,
 
+    /// A human readable identifier for the track. This will be used to
+    /// present the track for selection.
+    pub name: String,
+
     /// The path to the file where the corresponding audio file is. This file
     /// is only required to exist, once the source's copy method has finished.
     /// This will not be the actual file within the user's music library, but

src/import/source_selector.rs

@@ -1,12 +1,15 @@
 use super::medium_editor::MediumEditor;
 use super::disc_source::DiscSource;
+use super::folder_source::FolderSource;
 use super::source::Source;
 use crate::backend::Backend;
 use crate::widgets::{Navigator, NavigatorScreen};
+use gettextrs::gettext;
 use glib::clone;
 use gtk::prelude::*;
 use gtk_macros::get_widget;
 use std::cell::RefCell;
+use std::path::PathBuf;
 use std::rc::Rc;
 
 /// A dialog for starting to import music.
@@ -49,6 +52,55 @@ impl SourceSelector {
             }
         }));
 
+        folder_button.connect_clicked(clone!(@strong this => move |_| {
+            let window = this.navigator.borrow().clone().unwrap().window.clone();
+            let dialog = gtk::FileChooserDialog::new(
+                Some(&gettext("Select folder")),
+                Some(&window),
+                gtk::FileChooserAction::SelectFolder,
+                &[
+                    (&gettext("Cancel"), gtk::ResponseType::Cancel),
+                    (&gettext("Select"), gtk::ResponseType::Accept),
+                ]);
+
+            dialog.connect_response(clone!(@strong this => move |dialog, response| {
+                this.stack.set_visible_child_name("loading");
+                dialog.hide();
+
+                if let gtk::ResponseType::Accept = response {
+                    if let Some(file) = dialog.get_file() {
+                        if let Some(path) = file.get_path() {
+                            let context = glib::MainContext::default();
+                            let clone = this.clone();
+                            context.spawn_local(async move {
+                                let folder = FolderSource::new(PathBuf::from(path));
+                                match folder.load().await {
+                                    Ok(_) => {
+                                        let navigator = clone.navigator.borrow().clone();
+                                        if let Some(navigator) = navigator {
+                                            let source = Rc::new(Box::new(folder) as Box<dyn Source>);
+                                            let editor = MediumEditor::new(clone.backend.clone(), source);
+                                            navigator.push(editor);
+                                        }
+
+                                        clone.info_bar.set_revealed(false);
+                                        clone.stack.set_visible_child_name("start");
+                                    }
+                                    Err(_) => {
+                                        // TODO: Present error.
+                                        clone.info_bar.set_revealed(true);
+                                        clone.stack.set_visible_child_name("start");
+                                    }
+                                }
+                            });
+                        }
+                    }
+                }
+            }));
+
+            dialog.show();
+        }));
+
         disc_button.connect_clicked(clone!(@strong this => move |_| {
             this.stack.set_visible_child_name("loading");
 
@@ -69,6 +121,7 @@ impl SourceSelector {
                         clone.stack.set_visible_child_name("start");
                     }
                     Err(_) => {
+                        // TODO: Present error.
                         clone.info_bar.set_revealed(true);
                         clone.stack.set_visible_child_name("start");
                     }

src/import/track_selector.rs

@@ -87,13 +87,11 @@ impl TrackSelector {
                 }
             }));
 
-            let title = format!("Track {}", track.number);
-
             let row = libadwaita::ActionRow::new();
             row.add_prefix(&check);
             row.set_activatable_widget(Some(&check));
             row.set_activatable(true);
-            row.set_title(Some(&title));
+            row.set_title(Some(&track.name));
 
             track_list.append(&row);
         }

src/import/track_set_editor.rs

@@ -175,9 +175,7 @@ impl TrackSetEditor {
             };
 
             let tracks = this.source.tracks().unwrap();
-
+            let track_name = &tracks[track.track_source].name;
-            let number = tracks[track.track_source].number;
-            let subtitle = format!("Track {}", number);
 
             let edit_image = gtk::Image::from_icon_name(Some("document-edit-symbolic"));
             let edit_button = gtk::Button::new();
@@ -188,7 +186,7 @@ impl TrackSetEditor {
             let row = libadwaita::ActionRow::new();
             row.set_activatable(true);
             row.set_title(Some(&title));
-            row.set_subtitle(Some(&subtitle));
+            row.set_subtitle(Some(track_name));
             row.add_suffix(&edit_button);
             row.set_activatable_widget(Some(&edit_button));
 

src/meson.build

@@ -66,6 +66,7 @@ sources = files(
   'editors/work_part.rs',
   'editors/work_section.rs',
   'import/disc_source.rs',
+  'import/folder_source.rs',
   'import/medium_editor.rs',
   'import/mod.rs',
   'import/source.rs',