Add web bridge module

src/web/bridge.rs

@@ -0,0 +1,100 @@
+//! WebView bridge for JS <-> Rust communication
+
+use serde::{Deserialize, Serialize};
+
+#[derive(Debug, Clone, Serialize, Deserialize)]
+#[serde(tag = "type", content = "data")]
+pub enum BridgeMessage {
+    // Player commands
+    Play,
+    Pause,
+    Stop,
+    SeekFrame(u64),
+    SeekTime(f64),
+    StepForward,
+    StepBackward,
+    
+    // UI state
+    SetVolume(f32),
+    SetMuted(bool),
+    SetSpeed(f32),
+    
+    // Overlay toggles
+    ToggleSubtitle,
+    ToggleYolo,
+    ToggleChunks,
+    
+    // Zoom/Pan
+    Zoom(f32),
+    Pan(f32, f32),
+    ResetView,
+    
+    // File operations
+    OpenFile(String),
+    
+    // Queries
+    GetState,
+    GetSubtitle(f64),
+    GetDetections(u64),
+}
+
+#[derive(Debug, Clone, Serialize, Deserialize)]
+#[serde(tag = "type", content = "data")]
+pub enum BridgeResponse {
+    State(PlayerStateResponse),
+    Subtitle(Option<String>),
+    Detections(Vec<DetectionResponse>),
+    Error(String),
+    Ok,
+}
+
+#[derive(Debug, Clone, Serialize, Deserialize)]
+pub struct PlayerStateResponse {
+    pub playback: String,
+    pub current_frame: u64,
+    pub total_frames: u64,
+    pub current_time_ms: u64,
+    pub duration_ms: u64,
+    pub fps: f64,
+    pub show_subtitle: bool,
+    pub show_yolo: bool,
+    pub show_chunks: bool,
+    pub zoom: f32,
+    pub muted: bool,
+}
+
+#[derive(Debug, Clone, Serialize, Deserialize)]
+pub struct DetectionResponse {
+    pub class_name: String,
+    pub confidence: f64,
+    pub x1: f64,
+    pub y1: f64,
+    pub x2: f64,
+    pub y2: f64,
+}
+
+pub struct WebBridge;
+
+impl WebBridge {
+    pub fn new() -> Self {
+        Self
+    }
+
+    pub fn encode_message(msg: &BridgeMessage) -> String {
+        serde_json::to_string(msg).unwrap_or_default()
+    }
+
+    pub fn decode_message(raw: &str) -> Option<BridgeMessage> {
+        serde_json::from_str(raw).ok()
+    }
+
+    pub fn encode_response(resp: &BridgeResponse) -> String {
+        serde_json::to_string(resp).unwrap_or_default()
+    }
+}
+
+impl Default for WebBridge {
+    fn default() -> Self {
+        Self::new()
+    }
+}