cinny-desktop/src-tauri/src/lib.rs

#![cfg_attr(
    all(not(debug_assertions), target_os = "windows"),
    windows_subsystem = "windows"
)]

use tauri::{webview::{NewWindowResponse, WebviewWindowBuilder}, WebviewUrl};
use tauri_plugin_opener::OpenerExt;

pub fn run() {
    let port: u16 = 44548;
    let context = tauri::generate_context!();
    let builder = tauri::Builder::default();

    builder
        .plugin(tauri_plugin_localhost::Builder::new(port).build())
        .plugin(tauri_plugin_window_state::Builder::default().build())
        .plugin(tauri_plugin_opener::init())
        .setup(move |app| {
            #[cfg(debug_assertions)]
            let window_url = WebviewUrl::App(Default::default());

            #[cfg(not(debug_assertions))]
            let window_url = {
                let url = format!("http://localhost:{}", port).parse().unwrap();
                WebviewUrl::External(url)
            };

            let app_handle = app.handle().clone();
            let window = WebviewWindowBuilder::new(app, "main".to_string(), window_url)
                .title("Cinny")
                .disable_drag_drop_handler()
                .on_new_window(move |url, _features| {
                    let _ = app_handle.opener().open_url(url.as_str(), None::<&str>);
                    NewWindowResponse::Deny
                })
                .build()?;

            // Grant camera and microphone to WebView2 automatically.
            // Windows requires an explicit PermissionRequested COM event handler.
            #[cfg(target_os = "windows")]
            window.with_webview(|webview| {
                use webview2_com::{
                    Microsoft::Web::WebView2::Win32::{
                        COREWEBVIEW2_PERMISSION_KIND,
                        COREWEBVIEW2_PERMISSION_KIND_CAMERA,
                        COREWEBVIEW2_PERMISSION_KIND_MICROPHONE,
                        COREWEBVIEW2_PERMISSION_STATE_ALLOW,
                    },
                    PermissionRequestedEventHandler,
                };

                let controller = webview.controller();
                if let Ok(core) = unsafe { controller.CoreWebView2() } {
                    let handler = PermissionRequestedEventHandler::create(Box::new(
                        |_sender, args| {
                            if let Some(args) = args {
                                let mut kind = COREWEBVIEW2_PERMISSION_KIND(0);
                                unsafe { args.PermissionKind(&mut kind) }?;
                                if kind == COREWEBVIEW2_PERMISSION_KIND_MICROPHONE
                                    || kind == COREWEBVIEW2_PERMISSION_KIND_CAMERA
                                {
                                    unsafe {
                                        args.SetState(COREWEBVIEW2_PERMISSION_STATE_ALLOW)
                                    }?;
                                }
                            }
                            Ok(())
                        },
                    ));
                    let mut token = Default::default();
                    let _ = unsafe { core.add_PermissionRequested(&handler, &mut token) };
                }
            })?;

            Ok(())
        })
        .run(context)
        .expect("error while building tauri application");
}