Add M7: REST API server (ri-agent) with headless mode

Axum-based REST API that mirrors Tauri IPC commands, sharing the same ImageStore via Arc. Endpoints for image open/list/close/save, stats/histogram/ pixel inspection, operations (invert, blur, threshold, edge detection, FFT, projections, etc.), undo, and PNG tile rendering. Auto-starts on port 8787 alongside Tauri GUI. Standalone headless binary via `cargo run --bin ri-headless`. CORS enabled for browser-based clients. 75 tests passing. Co-Authored-By: Claude Opus 4.6 <[email protected]>
2026-03-09 23:51:55 -07:00
parent 14ba65851a
commit 432554a258
16 changed files with 917 additions and 3 deletions
@@ -0,0 +1,53 @@
+use axum::extract::{self, State};
+use axum::http::{header, StatusCode};
+use axum::response::{IntoResponse, Response};
+
+use ri_lut::Lut;
+use ri_render::CompositeChannel;
+use ri_types::ImageId;
+
+use crate::error::ApiError;
+use crate::state::AppState;
+
+/// GET /images/:id/tile/:c/:z/:t/:x/:y/:w/:h -> image/png
+pub async fn get_tile(
+    State(state): State<AppState>,
+    extract::Path((id, _c, z, t, x, y, w, h)): extract::Path<(String, u32, u32, u32, u32, u32, u32, u32)>,
+) -> Result<Response, ApiError> {
+    let image_id: ImageId = id.parse().map_err(|e: uuid::Error| ApiError::bad_request(e.to_string()))?;
+    let store = state.store.clone();
+
+    let png_bytes = tokio::task::spawn_blocking(move || {
+        store.with_entry(&image_id, |entry| {
+            let hs = &entry.hyperstack;
+            let img_w = hs.width();
+            let img_h = hs.height();
+
+            let visible: Vec<_> = entry
+                .channel_states
+                .iter()
+                .filter(|cs| cs.visible)
+                .filter_map(|cs| {
+                    let plane = hs.get_plane(cs.channel_index, z, t)?;
+                    Some(CompositeChannel {
+                        plane,
+                        lut: Lut::from_channel_color(&cs.color),
+                        display_range: &cs.display_range,
+                    })
+                })
+                .collect();
+
+            ri_render::render_composite_tile_png(&visible, img_w, img_h, x, y, w, h)
+        })
+        .map_err(|e| ApiError::not_found(e.to_string()))?
+        .map_err(|e| ApiError::internal(e.to_string()))
+    })
+    .await??;
+
+    Ok((
+        StatusCode::OK,
+        [(header::CONTENT_TYPE, "image/png")],
+        png_bytes,
+    )
+        .into_response())
+}