v0

src-tauri/.gitignore

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+# Generated by Cargo
+# will have compiled files and executables
+/target/
+
+# Generated by Tauri
+# will have schema files for capabilities auto-completion
+/gen/schemas

src-tauri/Cargo.toml

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+[package]
+name = "haystack"
+version = "0.1.0"
+description = "A Tauri App"
+authors = ["you"]
+edition = "2021"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[lib]
+# The `_lib` suffix may seem redundant but it is necessary
+# to make the lib name unique and wouldn't conflict with the bin name.
+# This seems to be only an issue on Windows, see https://github.com/rust-lang/cargo/issues/8519
+name = "haystack_lib"
+crate-type = ["staticlib", "cdylib", "rlib"]
+
+[build-dependencies]
+tauri-build = { version = "2", features = [] }
+
+[dependencies]
+tauri = { version = "2", features = [] }
+tauri-plugin-opener = "2"
+serde = { version = "1", features = ["derive"] }
+serde_json = "1"
+tauri-plugin-dialog = "2"
+notify = "6.1.1"
+base64 = "0.21.7"
+tokio = { version = "1.36.0", features = ["full"] }
+

src-tauri/build.rs

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+fn main() {
+    tauri_build::build()
+}

src-tauri/capabilities/default.json

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+{
+  "$schema": "../gen/schemas/desktop-schema.json",
+  "identifier": "default",
+  "description": "Capability for the main window",
+  "windows": ["main"],
+  "permissions": [
+    "core:default",
+    "opener:default",
+    "dialog:default",
+    "core:window:allow-start-dragging"
+  ]
+}

src-tauri/src/lib.rs

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+// Learn more about Tauri commands at https://tauri.app/develop/calling-rust/
+use std::path::PathBuf;
+use notify::{Config, RecommendedWatcher, RecursiveMode, Watcher};
+use tauri::Emitter;
+use std::sync::mpsc::channel;
+use std::fs;
+use base64::{Engine as _, engine::general_purpose::STANDARD as BASE64};
+use std::sync::Mutex;
+use std::sync::Arc;
+use tauri::AppHandle;
+
+
+// Global state to store the watcher
+struct WatcherState {
+    watcher: Option<RecommendedWatcher>,
+}
+
+impl WatcherState {
+    fn new() -> Self {
+        Self { watcher: None }
+    }
+}
+
+// Handle PNG file processing
+fn process_png_file(path: &PathBuf, app: AppHandle) -> Result<(), String> {
+    println!("Processing PNG file: {}", path.display());
+
+    // Read the file
+    let contents = fs::read(path)
+        .map_err(|e| format!("Failed to read file: {}", e))?;
+
+    // Convert to base64
+    let base64_string = BASE64.encode(&contents);
+    println!("Generated base64 string of length: {}", base64_string.len());
+
+    // Emit the base64 to frontend
+    app.emit("png-processed", base64_string)
+        .map_err(|e| format!("Failed to emit event: {}", e))?;
+
+    println!("Successfully processed file: {}", path.display());
+    Ok(())
+}
+
+#[tauri::command]
+async fn handle_selected_folder(
+    path: String,
+    state: tauri::State<'_, Arc<Mutex<WatcherState>>>,
+    app: AppHandle,
+) -> Result<String, String> {
+    let path_buf = PathBuf::from(&path);
+    
+    if !path_buf.exists() || !path_buf.is_dir() {
+        return Err("Invalid directory path".to_string());
+    }
+
+    // Stop existing watcher if any
+    let mut state = state.lock().map_err(|_| "Failed to lock state".to_string())?;
+    state.watcher = None;
+
+    // Create a channel to receive file system events
+    let (tx, rx) = channel();
+
+    // Create a new watcher
+    let mut watcher = RecommendedWatcher::new(
+        tx,
+        Config::default(),
+    ).map_err(|e| format!("Failed to create watcher: {}", e))?;
+
+    // Start watching the directory
+    watcher.watch(path_buf.as_ref(), RecursiveMode::Recursive)
+        .map_err(|e| format!("Failed to watch directory: {}", e))?;
+
+    // Store the watcher in state
+    state.watcher = Some(watcher);
+
+    let path_clone = path.clone();
+    let app_clone = app.clone();
+    tokio::spawn(async move {
+        println!("Starting to watch directory: {}", path_clone);
+        for res in rx {
+            match res {
+                Ok(event) => {
+                    println!("Received event: {:?}", event);
+                    match event.kind {
+                        notify::EventKind::Create(_) | notify::EventKind::Modify(_) => {
+                            for path in event.paths {
+                                println!("Processing path: {}", path.display());
+                                if let Some(extension) = path.extension() {
+                                    if extension.to_string_lossy().to_lowercase() == "png" {
+                                        if let Err(e) = process_png_file(&path, app_clone.clone()) {
+                                            eprintln!("Error processing PNG file: {}", e);
+                                        }
+                                    }
+                                }
+                            }
+                        }
+                        _ => {}
+                    }
+                }
+                Err(e) => eprintln!("Watch error: {:?}", e),
+            }
+        }
+    });
+
+    Ok(format!("Now watching directory: {}", path))
+}
+
+#[cfg_attr(mobile, tauri::mobile_entry_point)]
+pub fn run() {
+    let watcher_state = Arc::new(Mutex::new(WatcherState::new()));
+
+    tauri::Builder::default()
+        .plugin(tauri_plugin_dialog::init())
+        .plugin(tauri_plugin_opener::init())
+        .manage(watcher_state)
+        .invoke_handler(tauri::generate_handler![handle_selected_folder])
+        .run(tauri::generate_context!())
+        .expect("error while running tauri application");
+}

src-tauri/src/main.rs

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+// Prevents additional console window on Windows in release, DO NOT REMOVE!!
+#![cfg_attr(not(debug_assertions), windows_subsystem = "windows")]
+
+fn main() {
+    haystack_lib::run()
+}

src-tauri/tauri.conf.json

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+{
+  "$schema": "https://schema.tauri.app/config/2",
+  "productName": "haystack",
+  "version": "0.1.0",
+  "identifier": "com.haystack.app",
+  "build": {
+    "beforeDevCommand": "bun run dev",
+    "devUrl": "http://localhost:1420",
+    "beforeBuildCommand": "bun run build",
+    "frontendDist": "../dist"
+  },
+  "app": {
+    "windows": [
+      {
+        "title": "Haystack",
+        "width": 640,
+        "height": 480,
+        "decorations": false,
+        "transparent": true,
+        "resizable": false
+      }
+    ],
+    "security": {
+      "csp": null
+    }
+  },
+  "bundle": {
+    "active": true,
+    "targets": "all",
+    "icon": [
+      "icons/32x32.png",
+      "icons/128x128.png",
+      "icons/128x128@2x.png",
+      "icons/icon.icns",
+      "icons/icon.ico"
+    ]
+  }
+}