WIP: feat(tui): update state model from server messages

crates/cli/Cargo.toml

@@ -12,7 +12,8 @@ keywords = { workspace = true }
 categories = { workspace = true }
 
 [features]
-default = ["forgejo", "github"]
+# default = ["forgejo", "github"]
+default = ["forgejo", "github", "tui"]
 forgejo = ["git-next-forge-forgejo"]
 github = ["git-next-forge-github"]
 tui = ["ratatui"]

crates/cli/src/repo/handlers/receive_repo_config.rs

@@ -2,10 +2,13 @@
 use actix::prelude::*;
 use tracing::instrument;
 
-use crate::repo::{
+use crate::{
+    repo::{
         do_send,
         messages::{ReceiveRepoConfig, RegisterWebhook},
         RepoActor,
+    },
+    server::actor::messages::ServerUpdate,
 };
 
 impl Handler<ReceiveRepoConfig> for RepoActor {
@@ -13,7 +16,14 @@ impl Handler<ReceiveRepoConfig> for RepoActor {
     #[instrument(name = "RepoActor::ReceiveRepoConfig", skip_all, fields(repo = %self.repo_details, branches = ?msg))]
     fn handle(&mut self, msg: ReceiveRepoConfig, ctx: &mut Self::Context) -> Self::Result {
         let repo_config = msg.unwrap();
-        self.repo_details.repo_config.replace(repo_config);
+        self.repo_details.repo_config.replace(repo_config.clone());
+        if let Some(server_addr) = &self.server_addr {
+            server_addr.do_send(ServerUpdate::from((
+                &repo_config,
+                self.repo_details.forge.forge_alias().clone(),
+                self.repo_details.repo_alias.clone(),
+            )));
+        }
 
         do_send(&ctx.address(), RegisterWebhook::new(), self.log.as_ref());
     }

crates/cli/src/repo/handlers/validate_repo.rs

@@ -53,6 +53,9 @@ impl Handler<ValidateRepo> for RepoActor {
         };
         logger(self.log.as_ref(), "have repo config");
 
+        #[cfg(feature = "tui")]
+        self.update_tui();
+
         match validate(&**open_repository, &self.repo_details, &repo_config) {
             Ok(Positions {
                 main,

crates/cli/src/repo/handlers/webhook_notification.rs

@@ -135,7 +135,7 @@ fn handle_push(
     last_commit: &mut Option<Commit>,
     log: Option<&ActorLog>,
 ) -> Result<(), ()> {
-    logger(log, "message is for dev branch");
+    logger(log, format!("message is for {branch} branch"));
     let commit = Commit::from(push);
     if last_commit.as_ref() == Some(&commit) {
         logger(log, format!("not a new commit on {branch}"));

crates/cli/src/repo/mod.rs

@@ -1,7 +1,7 @@
 //
 use actix::prelude::*;
 
-use crate::alerts::messages::NotifyUser;
+use crate::{alerts::messages::NotifyUser, server::ServerActor};
 use derive_more::Deref;
 use kxio::network::Network;
 use std::time::Duration;
@@ -59,6 +59,7 @@ pub struct RepoActor {
     forge: Box<dyn git::ForgeLike>,
     log: Option<ActorLog>,
     notify_user_recipient: Option<Recipient<NotifyUser>>,
+    server_addr: Option<Addr<ServerActor>>,
 }
 impl RepoActor {
     #[allow(clippy::too_many_arguments)]
@@ -71,6 +72,7 @@ impl RepoActor {
         repository_factory: Box<dyn RepositoryFactory>,
         sleep_duration: std::time::Duration,
         notify_user_recipient: Option<Recipient<NotifyUser>>,
+        server_addr: Option<Addr<ServerActor>>,
     ) -> Self {
         let message_token = messages::MessageToken::default();
         Self {
@@ -90,6 +92,18 @@ impl RepoActor {
             sleep_duration,
             log: None,
             notify_user_recipient,
+            server_addr,
+        }
+    }
+
+    #[cfg(feature = "tui")]
+    fn update_tui(&self) {
+        use crate::server::actor::messages::ServerUpdate;
+
+        if let (Some(server_addr), Some(repo_config)) =
+            (&self.server_addr, &self.repo_details.repo_config)
+        {
+            server_addr.do_send(ServerUpdate::from((&self.repo_details, repo_config)));
         }
     }
 }

crates/cli/src/repo/tests/given.rs

@@ -195,6 +195,7 @@ pub fn a_repo_actor(
             repository_factory,
             std::time::Duration::from_nanos(1),
             None,
+            None,
         )
         .with_log(actors_log),
         log,

crates/cli/src/server/actor/handlers/mod.rs

@@ -1,5 +1,6 @@
 mod file_updated;
 mod receive_app_config;
 mod receive_valid_app_config;
+mod server_update;
 mod shutdown;
 mod subscribe_updates;

crates/cli/src/server/actor/handlers/receive_valid_app_config.rs

@@ -8,7 +8,7 @@ use crate::{
     alerts::messages::UpdateShout,
     repo::{messages::CloneRepo, RepoActor},
     server::actor::{
-        messages::{ReceiveValidAppConfig, ValidAppConfig},
+        messages::{ReceiveValidAppConfig, ServerUpdate, ValidAppConfig},
         ServerActor,
     },
     webhook::{
@@ -21,7 +21,7 @@ use crate::{
 impl Handler<ReceiveValidAppConfig> for ServerActor {
     type Result = ();
 
-    fn handle(&mut self, msg: ReceiveValidAppConfig, _ctx: &mut Self::Context) -> Self::Result {
+    fn handle(&mut self, msg: ReceiveValidAppConfig, ctx: &mut Self::Context) -> Self::Result {
         let ValidAppConfig {
             app_config,
             socket_address,
@@ -37,6 +37,7 @@ impl Handler<ReceiveValidAppConfig> for ServerActor {
         let webhook_router = WebhookRouterActor::default().start();
         let listen_url = app_config.listen().url();
         let notify_user_recipient = self.alerts.clone().recipient();
+        let server_addr = Some(ctx.address());
         // Forge Actors
         for (forge_alias, forge_config) in app_config.forges() {
             let repo_actors = self
@@ -46,6 +47,7 @@ impl Handler<ReceiveValidAppConfig> for ServerActor {
                     &server_storage,
                     listen_url,
                     &notify_user_recipient,
+                    server_addr.clone(),
                 )
                 .into_iter()
                 .map(start_repo_actor)
@@ -69,9 +71,18 @@ impl Handler<ReceiveValidAppConfig> for ServerActor {
             WebhookActor::new(socket_address, webhook_router.recipient()).start();
         self.webhook_actor_addr.replace(webhook_actor_addr);
         let shout = app_config.shout().clone();
-        self.app_config.replace(app_config);
+        self.app_config.replace(app_config.clone());
+        self.do_send(
+            ServerUpdate::AppConfigLoaded {
+                app_config: ValidAppConfig {
+                    app_config,
+                    socket_address,
+                    storage: server_storage,
+                },
+            },
+            ctx,
+        );
         self.alerts.do_send(UpdateShout::new(shout));
-        self.send_server_updates();
     }
 }
 

crates/cli/src/server/actor/handlers/server_update.rs

@@ -0,0 +1,14 @@
+use actix::Handler;
+
+//
+use crate::server::{actor::messages::ServerUpdate, ServerActor};
+
+impl Handler<ServerUpdate> for ServerActor {
+    type Result = ();
+
+    fn handle(&mut self, msg: ServerUpdate, _ctx: &mut Self::Context) -> Self::Result {
+        self.subscribers.iter().for_each(move |subscriber| {
+            subscriber.do_send(msg.clone());
+        });
+    }
+}

crates/cli/src/server/actor/messages.rs

@@ -3,10 +3,10 @@ use actix::{Message, Recipient};
 use derive_more::Constructor;
 
 use git_next_core::{
-    git::graph::Log,
+    git::{self, graph::Log, RepoDetails},
     message,
     server::{AppConfig, Storage},
-    ForgeAlias, RepoAlias, RepoBranches,
+    ForgeAlias, RepoAlias, RepoBranches, RepoConfig,
 };
 
 use std::net::SocketAddr;
@@ -40,20 +40,61 @@ message!(Shutdown, "Notification to shutdown the server actor");
 #[derive(Clone, Debug, PartialEq, Eq, Message)]
 #[rtype(result = "()")]
 pub enum ServerUpdate {
-    /// Status of a repo
-    UpdateRepoSummary {
+    /// List of all configured forges and aliases
+    AppConfigLoaded { app_config: ValidAppConfig },
+    /// Configuration of a repo
+    UpdateRepoConfig {
+        forge_alias: ForgeAlias,
+        repo_alias: RepoAlias,
+        branches: RepoBranches,
+    },
+
+    /// Status of the repo
+    UpdateRepoDetails {
         forge_alias: ForgeAlias,
         repo_alias: RepoAlias,
         branches: RepoBranches,
         log: Log,
     },
-    /// remove a repo
-    RemoveRepo {
-        forge_alias: ForgeAlias,
-        repo_alias: RepoAlias,
-    },
-    /// test message
-    Ping,
+}
+
+// impl From<&AppConfig> for ServerUpdate {
+//     fn from(app_config: &AppConfig) -> Self {
+//         Self::ForgeRepoList {
+//             list: app_config
+//                 .forges()
+//                 .flat_map(|(forge_alias, forge_config)| {
+//                     forge_config
+//                         .repos()
+//                         .map(|(repo_alias, _server_repo_config)| (forge_alias.clone(), repo_alias))
+//                         .collect::<Vec<_>>()
+//                 })
+//                 .collect::<Vec<_>>(),
+//         }
+//     }
+// }
+
+impl From<(&RepoConfig, ForgeAlias, RepoAlias)> for ServerUpdate {
+    fn from(value: (&RepoConfig, ForgeAlias, RepoAlias)) -> Self {
+        Self::UpdateRepoConfig {
+            forge_alias: value.1,
+            repo_alias: value.2,
+            branches: value.0.branches().clone(),
+        }
+    }
+}
+
+impl From<(&RepoDetails, &RepoConfig)> for ServerUpdate {
+    fn from((repo_details, repo_config): (&RepoDetails, &RepoConfig)) -> Self {
+        let branches = repo_config.branches().clone();
+        let git_graph_log = git::graph::log(repo_details);
+        Self::UpdateRepoDetails {
+            forge_alias: repo_details.forge.forge_alias().clone(),
+            repo_alias: repo_details.repo_alias.clone(),
+            branches,
+            log: git_graph_log,
+        }
+    }
 }
 
 message!(

crates/cli/src/server/actor/mod.rs

@@ -118,6 +118,7 @@ impl ServerActor {
         server_storage: &Storage,
         listen_url: &ListenUrl,
         notify_user_recipient: &Recipient<NotifyUser>,
+        server_addr: Option<Addr<Self>>,
     ) -> Vec<(ForgeAlias, RepoAlias, RepoActor)> {
         let span =
             tracing::info_span!("create_forge_repos", name = %forge_name, config = %forge_config);
@@ -125,8 +126,13 @@ impl ServerActor {
         let _guard = span.enter();
         tracing::info!("Creating Forge");
         let mut repos = vec![];
-        let creator =
-            self.create_actor(forge_name, forge_config.clone(), server_storage, listen_url);
+        let creator = self.create_actor(
+            forge_name,
+            forge_config.clone(),
+            server_storage,
+            listen_url,
+            server_addr,
+        );
         for (repo_alias, server_repo_config) in forge_config.repos() {
             let forge_repo = creator((
                 repo_alias,
@@ -148,6 +154,7 @@ impl ServerActor {
         forge_config: ForgeConfig,
         server_storage: &Storage,
         listen_url: &ListenUrl,
+        server_addr: Option<Addr<Self>>,
     ) -> impl Fn(
         (RepoAlias, &ServerRepoConfig, Recipient<NotifyUser>),
     ) -> (ForgeAlias, RepoAlias, RepoActor) {
@@ -194,6 +201,7 @@ impl ServerActor {
                 repository_factory.duplicate(),
                 sleep_duration,
                 Some(notify_user_recipient),
+                server_addr.clone(),
             );
             (forge_name.clone(), repo_alias, actor)
         }
@@ -242,10 +250,4 @@ impl ServerActor {
             ctx.address().do_send(msg);
         }
     }
-
-    fn send_server_updates(&self) {
-        self.subscribers.iter().for_each(|subscriber| {
-            subscriber.do_send(ServerUpdate::Ping);
-        });
-    }
 }

crates/cli/src/server/mod.rs

@@ -59,7 +59,6 @@ pub fn start(
         info!("Starting Server...");
         let server =
             ServerActor::new(fs.clone(), net.clone(), alerts_addr, repo, sleep_duration).start();
-        server.do_send(FileUpdated);
 
         info!("Starting File Watcher...");
         #[allow(clippy::expect_used)]
@@ -75,18 +74,18 @@ pub fn start(
 
                 let (tx_shutdown, rx_shutdown) = channel::<()>();
                 let tui_addr = tui::Tui::new(tx_shutdown).start();
-                // tui_addr.do_send(tui::Tick);
-                let _ = tui_addr.send(tui::Tick).await;
                 server.do_send(SubscribeToUpdates::new(tui_addr.clone().recipient()));
+                server.do_send(FileUpdated); // update file after ui subscription in place
                 loop {
                     let _ = tui_addr.send(tui::Tick).await;
                     if rx_shutdown.try_recv().is_ok() {
                         break;
                     }
-                    // actix_rt::task::yield_now().await;
+                    actix_rt::time::sleep(Duration::from_millis(16)).await;
                 }
             }
         } else {
+            server.do_send(FileUpdated);
             info!("Server running - Press Ctrl-C to stop...");
             let _ = signal::ctrl_c().await;
             info!("Ctrl-C received, shutting down...");

crates/cli/src/tui/README.md

@@ -0,0 +1,105 @@
+# TUI Actor
+
+- Maintains it's own copy of data for holding state
+- Is notified of update via actor messages from the Server and Repo Actors
+- State is somewhat heirarchical
+
+## State
+
+```rust
+enum TuiState {
+ Initial,
+ Configured {
+   app_config: ValidAppConfig,
+   forges: BTreeMap<ForgeAlias, RepoState>,
+ },
+}
+enum RepoState {
+ Identified { repo_alias: RepoAlias },
+ Configured { repo_alias: RepoAlias, branches: RepoBranches },
+ Ready { repo_alias: RepoAlias, branches: RepoBranches, main: Commit, next: Commit, dev: Commit, log: Log },
+ Alert { repo_alias: RepoAlias, message: String, branches: RepoBranches, main: Commit, next: Commit, dev: Commit, log: Log },
+}
+```
+
+## State Transitions:
+
+### `TuiState`
+
+```mermaid
+stateDiagram-v2
+  * --> Initial
+  Initial --> Configured
+```
+
+- `message!(Configure, ValidAppConfig, "Initialise UI with valid config");`
+
+### `RepoState`
+
+```mermaid
+stateDiagram-v2
+  * --> Identified
+  Identified --> Configured
+  Identified --> Ready
+  Configured --> Ready
+  Ready --> Alert
+  Configured --> Alert
+  Identified --> Alert
+  Alert --> Ready
+```
+
+- `Identified` - from AppConfig where a repo alias is listed, but repo config needs to be loaded from `.git-next.toml`
+- `Configured` - as `Identified` but either branches are identified in server config, OR the `.git-next.toml` file has been loaded
+- `Ready` - as `Configured` but the branch positions have been validated and do not require user intervention
+- `Alert` - as `Ready` but user intervention is required
+
+## Widget
+
+Initial mock up of UI. Possibly add some borders and padding as it looks a little squached together.
+
+```
++ gh
+- jo
+  + test (main/next/dev)
+  - tasyn (main/next/dev)
+    * 12ab32f (dev) added feature X
+    * bce43b1 (next) added feature Y
+    * f43e379 (main) added feature Z
+  - git-next (main/next/dev) DEV NOT AHEAD OF MAIN - rebase onto main
+    * 239cefd (main/next) fix bug A
+    * b4c290a (dev)
+```
+
+Adding a border around open forges:
+
+```
++ gh
+- jo --------------------------------------------------------------------+
+| + test (main/next/dev)                                                 |
+| - tasyn (main/next/dev)                                                |
+|   * 12ab32f (dev) added feature X                                      |
+|   * bce43b1 (next) added feature Y                                     |
+|   * f43e379 (main) added feature Z                                     |
+| - git-next (main/next/dev) DEV NOT AHEAD OF MAIN - rebase onto main    |
+|   * 239cefd (main/next) fix bug A                                      |
+|   * b4c290a (dev)                                                      |
++------------------------------------------------------------------------+
+```
+
+Adding a border around open forges and repos (I like this one the best):
+
+```
++ gh
+- jo --------------------------------------------------------------------+
+| + test (main/next/dev)                                                 |
+| - tasyn (main/next/dev) ---------------------------------------------+ |
+| | * 12ab32f (dev) added feature X                                    | |
+| | * bce43b1 (next) added feature Y                                   | |
+| | * f43e379 (main) added feature Z                                   | |
+| +--------------------------------------------------------------------+ |
+| - git-next (main/next/dev) DEV NOT AHEAD OF MAIN - rebase onto main -+ |
+| | * 239cefd (main/next) fix bug A                                    | |
+| | * b4c290a (dev)                                                    | |
+| +--------------------------------------------------------------------+ |
++------------------------------------------------------------------------+
+```

crates/cli/src/tui/actor/handlers/server_update.rs

@@ -1,27 +1,51 @@
-use std::time::Instant;
+use std::collections::BTreeMap;
 
 use actix::Handler;
 
-use crate::{server::actor::messages::ServerUpdate, tui::Tui};
+use crate::{
+    server::actor::messages::ServerUpdate,
+    tui::{
+        actor::{State, StateMode},
+        Tui,
+    },
+};
 
 //
 impl Handler<ServerUpdate> for Tui {
     type Result = ();
 
     fn handle(&mut self, msg: ServerUpdate, _ctx: &mut Self::Context) -> Self::Result {
+        self.state.tap();
         match msg {
-            ServerUpdate::UpdateRepoSummary {
+            ServerUpdate::AppConfigLoaded { app_config } => {
+                self.state.mode = StateMode::Configured {
+                    app_config,
+                    forges: BTreeMap::default(),
+                }
+            }
+            ServerUpdate::UpdateRepoConfig {
+                forge_alias,
+                repo_alias,
+                branches,
+            } => {
+                // self.state.repos_mut().insert(
+                //     ForgeRepoKey::new(forge_alias, repo_alias),
+                //     RepoState::Loaded {
+                //         branches,
+                //         log: Log::default(),
+                //     },
+                // );
+            }
+            ServerUpdate::UpdateRepoDetails {
                 forge_alias,
                 repo_alias,
                 branches,
                 log,
-            } => todo!(),
-            ServerUpdate::RemoveRepo {
-                forge_alias,
-                repo_alias,
-            } => todo!(),
-            ServerUpdate::Ping => {
-                self.last_ping = Instant::now();
+            } => {
+                // self.state.repos_mut().insert(
+                //     ForgeRepoKey::new(forge_alias, repo_alias),
+                //     RepoState::Loaded { branches, log },
+                // );
             }
         }
     }

crates/cli/src/tui/actor/handlers/tick.rs

@@ -1,12 +1,5 @@
 //
-use std::{borrow::BorrowMut, time::Instant};
-
-use actix::{ActorContext, Handler};
-use ratatui::{
-    crossterm::event::{self, KeyCode, KeyEventKind},
-    style::Stylize as _,
-    widgets::Paragraph,
-};
+use actix::Handler;
 
 use crate::tui::actor::{messages::Tick, Tui};
 
@@ -14,44 +7,9 @@ impl Handler<Tick> for Tui {
     type Result = std::io::Result<()>;
 
     fn handle(&mut self, _msg: Tick, ctx: &mut Self::Context) -> Self::Result {
-        if let Some(terminal) = self.terminal.borrow_mut() {
-            terminal.draw(|frame| {
-                let area = frame.area();
-                frame.render_widget(
-                    Paragraph::new(format!(
-                        "(press 'q' to quit) Ping:[{:?}] UI:[{:?}]",
-                        self.last_ping,
-                        Instant::now()
-                    ))
-                    .white()
-                    .on_blue(),
-                    area,
-                );
-            })?;
-        } else {
-            eprintln!("No terminal setup");
-        }
-        if event::poll(std::time::Duration::from_millis(16))? {
-            if let event::Event::Key(key) = event::read()? {
-                if key.kind == KeyEventKind::Press {
-                    match key.code {
-                        KeyCode::Char('q') => {
-                            // execute!(stderr(), LeaveAlternateScreen)?;
-                            // disable_raw_mode()?;
-                            ctx.stop();
-                            if let Err(err) = self.signal_shutdown.send(()) {
-                                tracing::error!(?err, "Failed to signal shutdown");
-                            }
-                        }
-                        KeyCode::Esc => {
-                            //
-                        }
-                        _ => (),
-                    }
-                }
-            }
-        }
-
+        self.state.tap();
+        self.draw()?;
+        self.handle_input(ctx)?;
         Ok(())
     }
 }

crates/cli/src/tui/actor/messages.rs

@@ -1,4 +1,4 @@
 //
 use git_next_core::message;
 
-message!(Tick => std::io::Result<()>, "Start the TUI");
+message!(Tick => std::io::Result<()>, "Update the TUI");

crates/cli/src/tui/actor/mod.rs

@@ -1,17 +1,20 @@
 //
 mod handlers;
 pub mod messages;
+mod model;
 
 use std::{
     io::{stderr, Stderr},
     sync::mpsc::Sender,
-    time::Instant,
 };
 
-use actix::{Actor, Context};
+use actix::{Actor, ActorContext as _, Context};
+
+pub use model::*;
 
 use ratatui::{
     crossterm::{
+        event::{self, KeyCode, KeyEventKind},
         execute,
         terminal::{disable_raw_mode, enable_raw_mode, EnterAlternateScreen, LeaveAlternateScreen},
     },
@@ -23,7 +26,7 @@ use ratatui::{
 pub struct Tui {
     terminal: Option<Terminal<CrosstermBackend<Stderr>>>,
     signal_shutdown: Sender<()>,
-    last_ping: Instant,
+    pub state: State,
 }
 impl Actor for Tui {
     type Context = Context<Self>;
@@ -58,9 +61,48 @@ impl Tui {
         Self {
             terminal: None,
             signal_shutdown,
-            last_ping: Instant::now(),
+            state: State::initial(),
         }
     }
+
+    pub const fn state(&self) -> &State {
+        &self.state
+    }
+
+    fn draw(&mut self) -> std::io::Result<()> {
+        let t = self.terminal.take();
+        if let Some(mut terminal) = t {
+            terminal.draw(|frame| {
+                frame.render_widget(self.state(), frame.area());
+            })?;
+            self.terminal = Some(terminal);
+        } else {
+            eprintln!("No terminal setup");
+        }
+        Ok(())
+    }
+
+    fn handle_input(&self, ctx: &mut <Self as actix::Actor>::Context) -> std::io::Result<()> {
+        if event::poll(std::time::Duration::from_millis(16))? {
+            if let event::Event::Key(key) = event::read()? {
+                if key.kind == KeyEventKind::Press {
+                    match key.code {
+                        KeyCode::Char('q') => {
+                            ctx.stop();
+                            if let Err(err) = self.signal_shutdown.send(()) {
+                                tracing::error!(?err, "Failed to signal shutdown");
+                            }
+                        }
+                        KeyCode::Esc => {
+                            //
+                        }
+                        _ => (),
+                    }
+                }
+            }
+        }
+        Ok(())
+    }
 }
 
 fn init() -> std::io::Result<Terminal<CrosstermBackend<Stderr>>> {

crates/cli/src/tui/actor/model.rs

@@ -0,0 +1,142 @@
+//
+use ratatui::{
+    prelude::{Buffer, Rect},
+    style::Stylize as _,
+    symbols::border,
+    text::Line,
+    widgets::{block::Title, Block, Paragraph, Widget},
+};
+
+use git_next_core::{git::graph::Log, BranchName, ForgeAlias, RepoAlias, RepoBranches};
+
+use std::{collections::BTreeMap, time::Instant};
+
+use crate::server::actor::messages::ValidAppConfig;
+
+#[derive(Clone, Debug, PartialEq, Eq)]
+pub struct State {
+    last_update: Instant,
+    pub mode: StateMode,
+}
+impl State {
+    pub fn initial() -> Self {
+        Self {
+            last_update: Instant::now(),
+            mode: StateMode::Initial { tick: 0 },
+        }
+    }
+
+    pub fn loaded(app_config: ValidAppConfig) -> Self {
+        Self {
+            last_update: Instant::now(),
+            mode: StateMode::Configured {
+                app_config,
+                forges: BTreeMap::default(),
+            },
+        }
+    }
+
+    pub fn tap(&mut self) {
+        self.last_update = Instant::now();
+        match &mut self.mode {
+            StateMode::Initial { tick } => *tick += 1,
+            _ => {}
+        }
+    }
+}
+
+#[derive(Clone, Debug, PartialEq, Eq)]
+pub enum StateMode {
+    /// UI has started but has no information on the state of the server
+    Initial { tick: usize },
+    /// The application configuration has been loaded, individual forges and repos have their own
+    /// states
+    Configured {
+        app_config: ValidAppConfig,
+        forges: BTreeMap<ForgeAlias, ForgeState>,
+    },
+}
+
+#[derive(Clone, Debug, Default, PartialEq, Eq)]
+enum ViewState {
+    #[default]
+    Collapsed,
+    Expanded,
+}
+
+#[derive(Clone, Debug, Default, PartialEq, Eq)]
+pub struct ForgeState {
+    alias: ForgeAlias,
+    view_state: ViewState,
+    repos: BTreeMap<RepoAlias, RepoState>,
+}
+
+#[derive(Clone, Debug, PartialEq, Eq)]
+pub enum RepoState {
+    Identified {
+        repo_alias: RepoAlias,
+    },
+    Configured {
+        repo_alias: RepoAlias,
+        branches: RepoBranches,
+    },
+    Ready {
+        repo_alias: RepoAlias,
+        branches: RepoBranches,
+        view_state: ViewState,
+        main: BranchName,
+        next: BranchName,
+        dev: BranchName,
+        log: Log,
+    },
+    Alert {
+        repo_alias: RepoAlias,
+        branches: RepoBranches,
+        view_state: ViewState,
+        main: BranchName,
+        next: BranchName,
+        dev: BranchName,
+        log: Log,
+        message: String,
+    },
+}
+
+impl Widget for &State {
+    fn render(self, area: Rect, buf: &mut Buffer)
+    where
+        Self: Sized,
+    {
+        match &self.mode {
+            StateMode::Initial { tick } => Paragraph::new(format!("Loading...{tick}")).centered(),
+            StateMode::Configured { app_config, forges } => {
+                ConfiguredAppWidget { app_config, forges }.into()
+            }
+        }
+        .block(
+            Block::bordered()
+                .title(
+                    Title::from(" Git-Next ".bold()).alignment(ratatui::layout::Alignment::Center),
+                )
+                .title(
+                    Title::from(Line::from(vec![
+                        " [q]uit ".into(),
+                        format!("{:?}", self.last_update).into(),
+                    ]))
+                    .alignment(ratatui::layout::Alignment::Center)
+                    .position(ratatui::widgets::block::Position::Bottom),
+                )
+                .border_set(border::THICK),
+        )
+        .render(area, buf);
+    }
+}
+
+struct ConfiguredAppWidget<'a> {
+    app_config: &'a ValidAppConfig,
+    forges: &'a BTreeMap<ForgeAlias, ForgeState>,
+}
+impl<'a> From<ConfiguredAppWidget<'a>> for Paragraph<'_> {
+    fn from(_value: ConfiguredAppWidget) -> Self {
+        Paragraph::new(vec![" ConfiguredAppWidget: TODO".into()])
+    }
+}

crates/core/src/git/graph.rs

@@ -1,5 +1,4 @@
 //
-
 use std::borrow::ToOwned;
 
 use take_until::TakeUntilExt;