More UI stuff

src/main.rs

@@ -1,8 +1,12 @@
 mod api;
 
 use std::{
+    cell::RefCell,
     io::{self, Write},
-    sync::Arc,
+    sync::{
+        mpsc::{Receiver, Sender},
+        Arc,
+    },
 };
 
 use api::OllamaAPI;
@@ -10,15 +14,13 @@ use iced::{
     alignment::{Horizontal, Vertical},
     futures::StreamExt,
     widget::{button, column, container, row, scrollable, text, text_input},
-    window::{self},
+    window, Application, Command, Length, Settings, Subscription, Theme,
-    Application, Command, Length, Settings, Theme,
 };
 use tokio::sync::RwLock;
 
 use crate::api::OllamaChat;
 
 enum UI {
-    Loading,
     Error(String),
     Chats(UIState),
 }
@@ -28,15 +30,23 @@ struct UIState {
     active_chat: Option<usize>,
     chat_input: String,
     busy: bool,
+    send: Sender<UIMessage>,
+    recv: RefCell<Option<Receiver<UIMessage>>>,
 }
 
 impl UIState {
-    fn create(api_url: &str) -> anyhow::Result<Self> {
+    fn create(
+        api_url: &str,
+        send: Sender<UIMessage>,
+        recv: Receiver<UIMessage>,
+    ) -> anyhow::Result<Self> {
         Ok(Self {
             ollama_api: Arc::new(RwLock::new(OllamaAPI::create(api_url)?)),
             active_chat: None,
             chat_input: String::from(""),
             busy: false,
+            send,
+            recv: RefCell::new(Some(recv)),
         })
     }
 }
@@ -44,7 +54,6 @@ impl UIState {
 #[derive(Debug, Clone)]
 enum UIMessage {
     Nop,
-    LoadDone,
     CreateChat,
     OpenChat(usize),
     ChatInput(String),
@@ -55,42 +64,39 @@ enum UIMessage {
 fn main() -> anyhow::Result<()> {
     println!("Making request");
 
-    UI::run(Settings {
+    let (send, recv) = std::sync::mpsc::channel();
-        window: window::Settings {
+    let mut settings = Settings::with_flags(UIFlags { send, recv });
+    settings.window = window::Settings {
         size: (720, 480),
         ..window::Settings::default()
-        },
+    };
-        ..Settings::default()
+
-    })?;
+    UI::run(settings)?;
 
     Ok(())
 }
 
+struct UIFlags {
+    send: Sender<UIMessage>,
+    recv: Receiver<UIMessage>,
+}
+
 impl Application for UI {
     type Executor = iced::executor::Default;
     type Message = UIMessage;
     type Theme = Theme;
-    type Flags = ();
+    type Flags = UIFlags;
 
-    fn new(_flags: Self::Flags) -> (Self, iced::Command<Self::Message>) {
+    fn new(flags: Self::Flags) -> (Self, iced::Command<Self::Message>) {
-        (
+        let state: UI;
-            UI::Loading,
+        let state_result = UIState::create("http://localhost:11434", flags.send, flags.recv);
-            Command::perform(
+        if let Ok(s) = state_result {
-                async {
+            state = UI::Chats(s);
-                    /*let api = OllamaAPI::create("http://localhost:11434").unwrap();
+        } else {
-                    let mut chat = api.create_chat("dolphin-mixtral");
+            state = UI::Error(String::from("Failed to initialize Ollama API"));
-                    chat.send_system("You are a bot that only replies with \"Hello\" and nothing else. You must never reply with anything other than \"Hello\"");
+        }
-                    chat.send_user("Who are you?");
-                    // println!("{}", amogus.get().await?);
 
-                    let mut a = chat.complete().await.unwrap();
+        (state, Command::none())
-                    while let Some(v) = a.next().await {
-                        println!("GOT = {:?}", v);
-                    }*/
-                },
-                |_| UIMessage::LoadDone,
-            ),
-        )
     }
 
     fn title(&self) -> String {
@@ -99,18 +105,6 @@ impl Application for UI {
 
     fn update(&mut self, message: Self::Message) -> iced::Command<Self::Message> {
         match self {
-            UI::Loading => match message {
-                UIMessage::LoadDone => {
-                    let state = UIState::create("http://localhost:11434");
-                    if let Ok(state) = state {
-                        *self = UI::Chats(state);
-                    } else {
-                        *self = UI::Error(String::from("Failed to initialize Ollama API"));
-                    }
-                    Command::none()
-                }
-                _ => Command::none(),
-            },
             UI::Chats(state) => match message {
                 UIMessage::CreateChat => {
                     let chat = state
@@ -139,6 +133,7 @@ impl Application for UI {
                         let content = state.chat_input.clone();
                         state.chat_input = String::from("");
                         state.busy = true;
+                        let send = state.send.clone();
                         let ollama_api = state.ollama_api.clone();
                         return Command::perform(
                             async move {
@@ -150,6 +145,8 @@ impl Application for UI {
                                         chat = api.chats[index].clone();
                                         let mut chat = chat.write().await;
                                         chat.send_user(&content);
+                                        chat.current_message =
+                                            Some(Arc::new(RwLock::new(String::from(""))));
                                     }
 
                                     //let mut chat = chat.write().await;
@@ -164,18 +161,17 @@ impl Application for UI {
 
                                         let content = content.unwrap();
 
-                                        let chat = chat.clone();
+                                        let chat_arc = chat.clone();
-                                        let mut chat = chat.write().await;
+                                        let chat = chat_arc.read().await;
                                         let msg = chat.current_message.clone();
                                         if let Some(msg) = msg {
                                             msg.write().await.push_str(&content);
-                                        } else {
-                                            chat.current_message =
-                                                Some(Arc::new(RwLock::new(String::from(&content))));
                                         }
 
                                         print!("{}", content);
                                         let _ = io::stdout().flush();
+
+                                        let _ = send.send(UIMessage::Nop);
                                     }
                                 }
                                 //state.ollama_api.complete(&x);
@@ -198,12 +194,6 @@ impl Application for UI {
 
     fn view(&self) -> iced::Element<'_, Self::Message, iced::Renderer<Self::Theme>> {
         match self {
-            UI::Loading => text("Loading")
-                .width(Length::Fill)
-                .height(Length::Fill)
-                .vertical_alignment(Vertical::Center)
-                .horizontal_alignment(Horizontal::Center)
-                .into(),
             UI::Error(message) => text(String::from("Error: ") + message)
                 .width(Length::Fill)
                 .height(Length::Fill)
@@ -293,4 +283,24 @@ impl Application for UI {
     fn theme(&self) -> Self::Theme {
         Theme::Dark
     }
+
+    fn subscription(&self) -> iced::Subscription<Self::Message> {
+        match self {
+            UI::Chats(state) => iced::subscription::unfold(
+                "external messages",
+                state.recv.take(),
+                move |recv| async move {
+                    let msg = recv.as_ref().unwrap().recv();
+
+                    if let Err(_) = msg {
+                        return (UIMessage::Nop, recv);
+                    }
+
+                    let msg = msg.unwrap();
+                    (msg, recv)
+                },
+            ),
+            _ => Subscription::none(),
+        }
+    }
 }