From 3b287d4548a9125f3fdcb6e15ea8d85b1167c21a Mon Sep 17 00:00:00 2001
From: Matthias Beyer <mail@beyermatthias.de>
Date: Thu, 2 Dec 2021 21:45:29 +0100
Subject: Add simple posting GUI implementation

Signed-off-by: Matthias Beyer <mail@beyermatthias.de>
---
 src/gui/mod.rs | 140 ++++++++++++++++++++++++++++++++++++++++++++++++++++-----
 1 file changed, 128 insertions(+), 12 deletions(-)

diff --git a/src/gui/mod.rs b/src/gui/mod.rs
index 97751b0..584392e 100644
--- a/src/gui/mod.rs
+++ b/src/gui/mod.rs
@@ -1,5 +1,15 @@
+use std::sync::Arc;
+
 use anyhow::Result;
 use iced::Application;
+use iced::Column;
+use iced::Container;
+use iced::Element;
+use iced::Length;
+use iced::Scrollable;
+use iced::TextInput;
+use iced::scrollable;
+use iced::text_input;
 use ipfs_api_backend_hyper::TryFromUri;
 
 use crate::client::Client;
@@ -7,27 +17,51 @@ use crate::config::Config;
 use crate::ipfs_client::IpfsClient;
 
 #[derive(Debug)]
-struct DistroxGui;
+enum Distrox {
+    Loading,
+    Loaded(State),
+    FailedToStart,
+}
 
 #[derive(Debug)]
+struct State {
+    client: Arc<Client>,
+
+    scroll: scrollable::State,
+    input: text_input::State,
+    input_value: String,
+}
+
+#[derive(Debug, Clone)]
 enum Message {
-    Loaded(Result<Client>),
+    Loaded(Arc<Client>),
+    FailedToLoad,
+
+    InputChanged(String),
+    CreatePost,
+
+    PostCreated(crate::cid::Cid),
+    PostCreationFailed(String),
 }
 
-impl Application for DistroxGui {
+impl Application for Distrox {
     type Executor = iced::executor::Default; // tokio
     type Message = Message;
     type Flags = ();
 
     fn new(_flags: ()) -> (Self, iced::Command<Self::Message>) {
         (
-            DistroxGui,
+            Distrox::Loading,
             iced::Command::perform(async {
-                let ipfs  = IpfsClient::from_str("http://localhost:5001")?;
-                let config = Config::default();
-                let client = Client::new(ipfs, config);
-                Ok(client)
-            }, Message::Loaded)
+                match IpfsClient::from_str("http://localhost:5001") {
+                    Err(_) => Message::FailedToLoad,
+                    Ok(ipfs) => {
+                        let config = Config::default();
+                        let client = Client::new(ipfs, config);
+                        Message::Loaded(Arc::new(client))
+                    }
+                }
+            }, |m: Message| -> Message { m })
         )
     }
 
@@ -35,12 +69,94 @@ impl Application for DistroxGui {
         String::from("distrox")
     }
 
-    fn update(&mut self, _message: Self::Message, _clipboard: &mut iced::Clipboard) -> iced::Command<Self::Message> {
+    fn update(&mut self, message: Self::Message, _clipboard: &mut iced::Clipboard) -> iced::Command<Self::Message> {
+        match self {
+            Distrox::Loading => {
+                match message {
+                    Message::Loaded(client) => {
+                        let state = State {
+                            client: client,
+                            scroll: scrollable::State::default(),
+                            input: text_input::State::default(),
+                            input_value: String::default(),
+                        };
+                        *self = Distrox::Loaded(state);
+                    }
+
+                    Message::FailedToLoad => {
+                        log::error!("Failed to load");
+                        *self = Distrox::FailedToStart;
+                    }
+
+                    _ => {}
+
+                }
+            }
+
+            Distrox::Loaded(state) => {
+                match message {
+                    Message::InputChanged(input) => {
+                        state.input_value = input;
+                    }
+
+                    Message::CreatePost => {
+                        if !state.input_value.is_empty() {
+                            let client = state.client.clone();
+                            iced::Command::perform(async move {
+                                client.post_text_blob(state.input_value.clone()).await
+                            },
+                            |res| match res {
+                                Ok(cid) => Message::PostCreated(cid),
+                                Err(e) => Message::PostCreationFailed(e.to_string())
+                            });
+                        }
+                    }
+
+                    _ => {}
+                }
+            }
+
+            Distrox::FailedToStart => {
+                unimplemented!()
+            }
+        }
         iced::Command::none()
     }
 
     fn view(&mut self) -> iced::Element<Self::Message> {
-        iced::Text::new("Hello, world!").into()
+        match self {
+            Distrox::Loading => {
+                unimplemented!()
+            }
+
+            Distrox::Loaded(state) => {
+                let input = TextInput::new(
+                    &mut state.input,
+                    "What do you want to tell the world?",
+                    &mut state.input_value,
+                    Message::InputChanged,
+                )
+                .padding(15)
+                .size(30)
+                .on_submit(Message::CreatePost);
+
+                let content = Column::new()
+                    .max_width(800)
+                    .spacing(20)
+                    .push(input);
+
+                Scrollable::new(&mut state.scroll)
+                    .padding(40)
+                    .push(
+                        Container::new(content).width(Length::Fill).center_x(),
+                    )
+                    .into()
+            }
+
+            Distrox::FailedToStart => {
+                unimplemented!()
+            }
+        }
     }
 
 }
@@ -58,5 +174,5 @@ pub fn run() -> Result<()> {
         ..iced::Settings::default()
     };
 
-    DistroxGui::run(settings).map_err(anyhow::Error::from)
+    Distrox::run(settings).map_err(anyhow::Error::from)
 }
-- 
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