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//! GUI to securely send files (without a relay or port forwarding).
use bytesize::ByteSize;
use eframe::egui;
use egui::{Context, RichText, Ui};
use gday_encryption::EncryptedStream;
use gday_file_transfer::{FileOfferMsg, LocalFileOffer, TransferReport};
use gday_hole_punch::{FullContact, PeerCode};
use helpers::MyHandle;
use log::error;
use std::sync::{Arc, Mutex};
use tokio::net::TcpStream;
use crate::{
helpers::{receive1, receive2, send1, send2},
logger::Logger,
};
mod helpers;
mod logger;
fn main() -> eframe::Result {
let options = eframe::NativeOptions::default();
eframe::run_native(
"Gday GUI",
options,
Box::new(|_cc| Ok(Box::new(AppState::default()))),
)
}
struct AppState {
view: View,
rt: tokio::runtime::Runtime,
logger: Logger,
}
#[derive(Default)]
enum View {
#[default]
Home,
/// Creating room in server.
Send1 {
handle: MyHandle<anyhow::Result<View>>,
},
/// Displaying peer code, and waiting to get peer's contact.
Send2 {
offer: LocalFileOffer,
peer_code: PeerCode,
peer_contact_handle: MyHandle<Result<(FullContact, FullContact), gday_hole_punch::Error>>,
},
/// Transferring.
Send3 {
handle: MyHandle<anyhow::Result<()>>,
transfer_report: Arc<Mutex<TransferReport>>,
},
/// Text box for entering peer code
Receive1 {
entered_code: String,
},
/// Connecting and reading offer from peer
Receive2 {
handle: MyHandle<anyhow::Result<View>>,
},
/// Asking user to confirm offered files, and select save location.
Receive3 {
peer_conn: EncryptedStream<TcpStream>,
offer: FileOfferMsg,
},
/// Transferring
Receive4 {
handle: MyHandle<anyhow::Result<()>>,
transfer_report: Arc<Mutex<TransferReport>>,
},
/// Transfer complete screen
Done,
ErrorScreen {
message: String,
},
}
impl Default for AppState {
fn default() -> Self {
let logger = Logger::init();
Self {
view: View::Home,
rt: tokio::runtime::Runtime::new().unwrap(),
logger,
}
}
}
impl eframe::App for AppState {
fn update(&mut self, ctx: &Context, _frame: &mut eframe::Frame) {
egui::CentralPanel::default().show(ctx, |ui| {
if !matches!(self.view, View::Home) && ui.button("ток Home").clicked() {
self.view = View::Home;
ui.separator();
}
self.main_ui(ctx, ui);
ui.separator();
ui.label("Log:");
ui.group(|ui| {
let scroll = egui::ScrollArea::vertical().id_salt("Log");
scroll.show(ui, |ui| {
ui.label(self.logger.get_log().as_str())
.scroll_to_me(Some(egui::Align::BOTTOM));
})
})
});
}
}
impl AppState {
fn main_ui(&mut self, ctx: &Context, ui: &mut Ui) {
match &mut self.view {
View::Home => {
ui.heading("Gday GUI");
ui.hyperlink("https://github.com/manforowicz/gday");
ui.horizontal(|ui| {
if ui.button("Send files").clicked()
&& let Some(paths) = rfd::FileDialog::new()
.set_title("Choose files to send")
.pick_files()
{
let handle = MyHandle(self.rt.spawn(async move { send1(&paths).await }));
self.view = View::Send1 { handle };
}
if ui.button("Receive files").clicked() {
self.view = View::Receive1 {
entered_code: String::new(),
};
}
});
ui.label(
"Note: the Gday command line tool has more \
features than the GUI (custom server, custom code, etc.)",
);
}
View::Send1 { handle } => {
ui.label("Connecting to server...");
if handle.is_finished() {
match self.rt.block_on(handle).expect("Tokio join failed") {
Ok(view) => {
self.view = view;
}
Err(err) => {
self.view = View::ErrorScreen {
message: err.to_string(),
};
}
}
}
ctx.request_repaint();
}
View::Send2 {
offer,
peer_code,
peer_contact_handle,
} => {
ui.group(|ui| {
ui.horizontal(|ui| {
ui.label("Tell your peer to receive with code: ");
});
ui.group(|ui| {
ui.label(RichText::new(format!(" {peer_code} ")).strong().monospace());
});
});
ui.group(|ui| {
ui.label("Files to send:");
ui.group(|ui| {
egui::ScrollArea::both().show(ui, |ui| {
for (path, meta) in &offer.offer.offer {
ui.label(format!("{} ({})", path.display(), ByteSize(meta.size)));
}
});
});
});
if peer_contact_handle.is_finished() {
let (my_contact, peer_contact) =
match self.rt.block_on(peer_contact_handle).expect("Tokio error") {
Ok(good) => good,
Err(err) => {
self.view = View::ErrorScreen {
message: err.to_string(),
};
return;
}
};
let transfer_report = Arc::new(Mutex::new(TransferReport::default()));
let handle: MyHandle<anyhow::Result<()>> = MyHandle(self.rt.spawn(send2(
my_contact,
peer_contact,
peer_code.shared_secret().to_string(),
offer.clone(),
transfer_report.clone(),
)));
self.view = View::Send3 {
handle,
transfer_report,
};
}
ctx.request_repaint();
}
View::Send3 {
handle,
transfer_report,
} => {
let pr = transfer_report.lock().unwrap();
let percentage = pr.processed_bytes as f32 / pr.total_bytes as f32;
ui.add(egui::ProgressBar::new(percentage).text(format!(
"Sending {} ({} / {})",
pr.current_file.display(),
ByteSize(pr.processed_bytes),
ByteSize(pr.total_bytes),
)));
drop(pr);
if handle.is_finished() {
match self.rt.block_on(handle).expect("Tokio error") {
Ok(()) => self.view = View::Done,
Err(err) => {
self.view = View::ErrorScreen {
message: err.to_string(),
};
}
}
}
ctx.request_repaint();
}
View::Receive1 { entered_code } => {
ui.label(
"To receive files, ask your peer to give you a code (such as 1.qmecyr.26h9aw)",
);
let mut clicked = false;
ui.horizontal(|ui| {
ui.label("Code: ");
ui.text_edit_singleline(entered_code);
if ui.button("Enter").clicked() {
clicked = true;
}
});
if clicked {
let peer_code = PeerCode::try_from(entered_code.as_str());
match peer_code {
Ok(code) => {
let handle = MyHandle(self.rt.spawn(receive1(code)));
self.view = View::Receive2 { handle };
}
Err(err) => {
error!("Couldn't parse code: {err}");
}
}
}
}
View::Receive2 { handle } => {
ui.label("Connecting...");
if handle.is_finished() {
match self.rt.block_on(handle).expect("Tokio error") {
Ok(view) => self.view = view,
Err(err) => {
self.view = View::ErrorScreen {
message: err.to_string(),
}
}
}
}
ctx.request_repaint();
}
View::Receive3 {
peer_conn: _,
offer,
} => {
ui.label("Would you like to receive these files?");
ui.group(|ui| {
egui::ScrollArea::both().show(ui, |ui| {
for (path, meta) in &offer.offer {
ui.label(format!("{} ({})", path.display(), ByteSize(meta.size)));
}
});
});
ui.horizontal(|ui| {
if ui.button("Cancel").clicked() {
self.view = View::Home;
}
if ui.button("Proceed").clicked()
&& let Some(save_loc) = rfd::FileDialog::new()
.set_title("Choose download folder")
.pick_folder()
{
let View::Receive3 { peer_conn, offer } = std::mem::take(&mut self.view)
else {
unreachable!()
};
let transfer_report = Arc::new(Mutex::new(TransferReport::default()));
let handle = MyHandle(self.rt.spawn(receive2(
peer_conn,
offer,
save_loc,
transfer_report.clone(),
)));
self.view = View::Receive4 {
handle,
transfer_report,
}
}
});
}
View::Receive4 {
handle,
transfer_report,
} => {
let pr = transfer_report.lock().unwrap();
let percentage = pr.processed_bytes as f32 / pr.total_bytes as f32;
ui.add(egui::ProgressBar::new(percentage).text(format!(
"Receiving {} ({} / {})",
pr.current_file.display(),
ByteSize(pr.processed_bytes),
ByteSize(pr.total_bytes),
)));
drop(pr);
if handle.is_finished() {
match self.rt.block_on(handle).expect("Tokio error") {
Ok(()) => {
self.view = View::Done;
}
Err(err) => {
self.view = View::ErrorScreen {
message: err.to_string(),
}
}
}
}
ctx.request_repaint();
}
View::Done => {
ui.label("Transfer complete.");
}
View::ErrorScreen { message } => {
ui.label("Error:");
ui.label(message.as_str());
}
}
}
}