Chore: Refactor Rust-Backend Modularity

src-tauri/src/commands/storage.rs

@@ -0,0 +1,117 @@
+use std::path::PathBuf;
+use serde::Serialize;
+use sysinfo::Disks;
+use tauri::Emitter;
+use walkdir::WalkDir;
+
+use crate::server::resolve::suwayomi_data_dir;
+
+#[derive(Serialize)]
+pub struct StorageInfo {
+    pub manga_bytes: u64,
+    pub total_bytes: u64,
+    pub free_bytes:  u64,
+    pub path:        String,
+}
+
+fn resolve_downloads_path(downloads_path: &str) -> PathBuf {
+    if !downloads_path.trim().is_empty() {
+        return PathBuf::from(downloads_path.trim());
+    }
+    suwayomi_data_dir().join("downloads")
+}
+
+#[tauri::command]
+pub fn get_storage_info(downloads_path: String) -> Result<StorageInfo, String> {
+    let path = resolve_downloads_path(&downloads_path);
+
+    let manga_bytes = if path.exists() {
+        WalkDir::new(&path)
+            .into_iter()
+            .filter_map(|e| e.ok())
+            .filter_map(|e| e.metadata().ok())
+            .filter(|m| m.is_file())
+            .map(|m| m.len())
+            .sum()
+    } else {
+        0
+    };
+
+    let stat_path = if path.exists() {
+        path.clone()
+    } else {
+        dirs::home_dir().unwrap_or_else(|| PathBuf::from("/"))
+    };
+
+    let disks = Disks::new_with_refreshed_list();
+    let disk = disks
+        .iter()
+        .filter(|d| stat_path.starts_with(d.mount_point()))
+        .max_by_key(|d| d.mount_point().as_os_str().len())
+        .ok_or_else(|| "Could not find disk for path".to_string())?;
+
+    Ok(StorageInfo {
+        manga_bytes,
+        total_bytes: disk.total_space(),
+        free_bytes:  disk.available_space(),
+        path:        path.to_string_lossy().into_owned(),
+    })
+}
+
+#[tauri::command]
+pub fn get_default_downloads_path() -> String {
+    resolve_downloads_path("").to_string_lossy().into_owned()
+}
+
+#[tauri::command]
+pub fn check_path_exists(path: String) -> bool {
+    std::path::Path::new(path.trim()).is_dir()
+}
+
+#[tauri::command]
+pub fn create_directory(path: String) -> Result<(), String> {
+    std::fs::create_dir_all(path.trim()).map_err(|e| e.to_string())
+}
+
+#[tauri::command]
+pub async fn migrate_downloads(app: tauri::AppHandle, src: String, dst: String) -> Result<(), String> {
+    use std::fs;
+
+    let src_path = PathBuf::from(src.trim());
+    let dst_path = PathBuf::from(dst.trim());
+
+    if !src_path.is_dir() {
+        return Ok(());
+    }
+
+    let total: u64 = WalkDir::new(&src_path)
+        .into_iter()
+        .filter_map(|e| e.ok())
+        .filter(|e| e.file_type().is_file())
+        .count() as u64;
+
+    let _ = app.emit("migrate_progress", serde_json::json!({ "done": 0u64, "total": total, "current": "" }));
+
+    let mut done: u64 = 0;
+
+    for entry in WalkDir::new(&src_path).into_iter().filter_map(|e| e.ok()) {
+        let rel    = entry.path().strip_prefix(&src_path).map_err(|e| e.to_string())?;
+        let target = dst_path.join(rel);
+
+        if entry.file_type().is_dir() {
+            fs::create_dir_all(&target).map_err(|e| e.to_string())?;
+        } else {
+            if let Some(parent) = target.parent() {
+                fs::create_dir_all(parent).map_err(|e| e.to_string())?;
+            }
+            fs::copy(entry.path(), &target).map_err(|e| e.to_string())?;
+            done += 1;
+            let _ = app.emit("migrate_progress", serde_json::json!({
+                "done": done, "total": total, "current": rel.to_string_lossy()
+            }));
+        }
+    }
+
+    fs::remove_dir_all(&src_path).map_err(|e| e.to_string())?;
+    Ok(())
+}