webhook through event system, extract data-generators adapter

webhook route now emits WebhookDataReceived event instead of directly
mutating DataProjection and broadcasting. event_handler applies data
and pushes incremental DataUpdate.

clock/static_text generators extracted to data-generators crate behind
DataSourcePort. chrono removed from bootstrap. polling adapters grouped
into Adapters struct.

crates/adapters/data-generators/Cargo.toml

@@ -0,0 +1,10 @@
+[package]
+name = "data-generators"
+version = "0.1.0"
+edition = "2024"
+
+[dependencies]
+domain.workspace = true
+chrono = "0.4"
+chrono-tz = "0.10"
+thiserror.workspace = true

crates/adapters/data-generators/src/lib.rs

@@ -0,0 +1,59 @@
+use chrono::Utc;
+use chrono_tz::Tz;
+use domain::{DataSource, DataSourceConfig, DataSourcePort, Value};
+use std::collections::BTreeMap;
+
+#[derive(Default)]
+pub struct ClockGenerator;
+
+impl ClockGenerator {
+    pub fn new() -> Self {
+        Self
+    }
+}
+
+#[derive(Debug, thiserror::Error)]
+pub enum GeneratorError {
+    #[error("wrong config type for generator")]
+    WrongConfig,
+}
+
+impl DataSourcePort for ClockGenerator {
+    type Error = GeneratorError;
+
+    async fn poll(&self, source: &DataSource) -> Result<Value, Self::Error> {
+        let (fmt, tz_name) = match &source.config {
+            DataSourceConfig::Clock { format, timezone } => (format.as_str(), timezone.as_str()),
+            _ => ("%H:%M:%S", "UTC"),
+        };
+        let tz: Tz = tz_name.parse().unwrap_or(chrono_tz::UTC);
+        let now = Utc::now().with_timezone(&tz);
+        let formatted = now.format(fmt).to_string();
+        let mut map = BTreeMap::new();
+        map.insert("time".into(), Value::String(formatted));
+        Ok(Value::Object(map))
+    }
+}
+
+#[derive(Default)]
+pub struct StaticTextGenerator;
+
+impl StaticTextGenerator {
+    pub fn new() -> Self {
+        Self
+    }
+}
+
+impl DataSourcePort for StaticTextGenerator {
+    type Error = GeneratorError;
+
+    async fn poll(&self, source: &DataSource) -> Result<Value, Self::Error> {
+        let text = match &source.config {
+            DataSourceConfig::StaticText { text } => text.clone(),
+            _ => String::new(),
+        };
+        let mut map = BTreeMap::new();
+        map.insert("text".into(), Value::String(text));
+        Ok(Value::Object(map))
+    }
+}

crates/adapters/http-api/src/routes/webhook.rs

@@ -2,7 +2,7 @@ use crate::AppState;
 use axum::extract::{Path, State};
 use axum::http::StatusCode;
 use axum::response::Json;
-use domain::{BroadcastPort, ConfigRepository, EventPublisher, WidgetStateReader};
+use domain::{ConfigRepository, DomainEvent, EventPublisher};
 
 type S<C, E, W, B, R, A, H> = State<AppState<C, E, W, B, R, A, H>>;
 
@@ -16,9 +16,6 @@ where
     C::Error: std::fmt::Debug,
     E: EventPublisher,
     E::Error: std::fmt::Debug,
-    W: WidgetStateReader,
-    B: BroadcastPort,
-    B::Error: std::fmt::Debug,
 {
     let source = state
         .config
@@ -34,37 +31,14 @@ where
         ));
     }
 
-    let raw = json_to_domain_value(body);
-    let widgets = state
-        .config
-        .list_widgets()
+    let data = json_to_domain_value(body);
+
+    state
+        .events
+        .publish(DomainEvent::WebhookDataReceived { source_id, data })
         .await
         .map_err(|e| (StatusCode::INTERNAL_SERVER_ERROR, format!("{e:?}")))?;
 
-    let layout = state
-        .config
-        .get_layout()
-        .await
-        .map_err(|e| (StatusCode::INTERNAL_SERVER_ERROR, format!("{e:?}")))?;
-
-    let changed = state
-        .widget_states
-        .apply_raw_data(source_id, &raw, &widgets)
-        .await;
-
-    if !changed.is_empty()
-        && let Some(l) = &layout
-    {
-        let with_hints: Vec<_> = changed
-            .iter()
-            .filter_map(|(id, s)| {
-                let hint = widgets.iter().find(|w| w.id == *id)?.display_hint.clone();
-                Some((*id, hint, s.clone()))
-            })
-            .collect();
-        let _ = state.broadcaster.push_screen_update(l, &with_hints).await;
-    }
-
     Ok(StatusCode::OK)
 }