Add server-side workflows with YAML files, task freeze and lead tools

internal/server/workflows.go

@@ -0,0 +1,65 @@
+package server
+
+import (
+	"fmt"
+	"io"
+	"net/http"
+	"net/url"
+
+	"g.fc.run/misc/byre/internal/workflow"
+)
+
+const maxWorkflowFileBytes = 1 << 20
+
+func (s *Server) ListWorkflows(w http.ResponseWriter, r *http.Request) {
+	workflows, err := s.store.ListWorkflows(r.Context())
+	if err != nil {
+		writeStoreError(w, err)
+		return
+	}
+	writeJSON(w, http.StatusOK, workflows)
+}
+
+func (s *Server) GetWorkflow(w http.ResponseWriter, r *http.Request, name string) {
+	file, err := s.agents.WorkflowFile(r.Context(), name)
+	if err != nil {
+		writeAgentError(w, err)
+		return
+	}
+	w.Header().Set("Content-Type", "application/yaml")
+	w.Header().Set("Content-Disposition", "attachment; filename*=UTF-8''"+url.PathEscape(workflow.Filename(name)))
+	w.WriteHeader(http.StatusOK)
+	w.Write(file)
+}
+
+func (s *Server) PutWorkflow(w http.ResponseWriter, r *http.Request, name string) {
+	file, err := io.ReadAll(http.MaxBytesReader(w, r.Body, maxWorkflowFileBytes))
+	if err != nil {
+		writeError(w, http.StatusBadRequest, fmt.Errorf("read workflow file: %w", err))
+		return
+	}
+	summary, err := s.agents.SaveWorkflow(r.Context(), name, file, actor(r))
+	if err != nil {
+		writeAgentError(w, err)
+		return
+	}
+	writeJSON(w, http.StatusOK, summary)
+}
+
+func (s *Server) DeleteWorkflow(w http.ResponseWriter, r *http.Request, name string) {
+	err := s.store.DeleteWorkflow(r.Context(), name, actor(r))
+	if err != nil {
+		writeStoreError(w, err)
+		return
+	}
+	w.WriteHeader(http.StatusNoContent)
+}
+
+func (s *Server) GetTaskWorkflow(w http.ResponseWriter, r *http.Request, taskID string) {
+	tw, err := s.agents.TaskWorkflow(r.Context(), taskID)
+	if err != nil {
+		writeStoreError(w, err)
+		return
+	}
+	writeJSON(w, http.StatusOK, tw)
+}