feat(api): expose process output over websocket

Co-Authored-By: Claude <noreply@anthropic.com>

internal/api/process_ws_test.go

@@ -0,0 +1,90 @@
+package api
+
+import (
+	"net/http/httptest"
+	"os"
+	"path/filepath"
+	"strings"
+	"testing"
+	"time"
+
+	"codespace/internal/process"
+	"codespace/internal/service"
+	"codespace/internal/workspace"
+
+	"github.com/gin-gonic/gin"
+	"github.com/gorilla/websocket"
+)
+
+func TestProcessWS(t *testing.T) {
+	tmpDir := t.TempDir()
+
+	opencodePath := filepath.Join(tmpDir, "opencode")
+	script := []byte("#!/bin/sh\nread line\necho \"got: $line\"\nsleep 0.1\nexit 0\n")
+	if err := os.WriteFile(opencodePath, script, 0o755); err != nil {
+		t.Fatalf("write fake opencode: %v", err)
+	}
+
+	wsRoot := filepath.Join(tmpDir, "workspaces")
+	wsMgr := workspace.NewLocalManager(wsRoot)
+	procMgr := process.NewManager(opencodePath)
+	wsSvc := service.NewWorkspaceService(wsMgr, procMgr, nil)
+	fileSvc := service.NewFileService(wsMgr, 1<<20)
+	procSvc := service.NewProcessService(wsMgr, procMgr, nil)
+
+	r := NewRouter(wsSvc, fileSvc, procSvc, nil, gin.TestMode)
+	srv := httptest.NewServer(r)
+	defer srv.Close()
+
+	ws, err := wsSvc.Create("wstest")
+	if err != nil {
+		t.Fatalf("create workspace: %v", err)
+	}
+	t.Cleanup(func() {
+		if err := wsSvc.Delete(ws.ID); err != nil {
+			t.Logf("cleanup delete workspace: %v", err)
+		}
+	})
+
+	if err := procSvc.Start(ws.ID); err != nil {
+		t.Fatalf("start process: %v", err)
+	}
+
+	wsURL := "ws" + strings.TrimPrefix(srv.URL, "http") + "/api/workspaces/" + ws.ID + "/process/ws"
+	conn, _, err := websocket.DefaultDialer.Dial(wsURL, nil)
+	if err != nil {
+		t.Fatalf("dial websocket: %v", err)
+	}
+	defer conn.Close()
+
+	if err := conn.WriteMessage(websocket.TextMessage, []byte("hello\n")); err != nil {
+		t.Fatalf("write message: %v", err)
+	}
+
+	if err := conn.SetReadDeadline(time.Now().Add(3 * time.Second)); err != nil {
+		t.Fatalf("set read deadline: %v", err)
+	}
+
+	var gotEcho, gotExit bool
+	for {
+		_, data, err := conn.ReadMessage()
+		if err != nil {
+			break
+		}
+		text := string(data)
+		if strings.Contains(text, "got: hello") {
+			gotEcho = true
+		}
+		if strings.Contains(text, "[process exited") {
+			gotExit = true
+			break
+		}
+	}
+
+	if !gotEcho {
+		t.Fatal("did not receive echo frame containing \"got: hello\"")
+	}
+	if !gotExit {
+		t.Fatal("did not receive exit banner frame")
+	}
+}