vendoring and caldav

vendor/github.com/samedi/caldav-go/handlers/put.go

@@ -0,0 +1,65 @@
+package handlers
+
+import (
+  "net/http"
+  "github.com/samedi/caldav-go/errs"
+  "github.com/samedi/caldav-go/global"
+)
+
+type putHandler struct {
+  request *http.Request
+  response *Response
+}
+
+func (ph putHandler) Handle() *Response {
+  requestBody := readRequestBody(ph.request)
+  precond := requestPreconditions{ph.request}
+  success := false
+
+  // check if resource exists
+  resourcePath := ph.request.URL.Path
+  resource, found, err := global.Storage.GetShallowResource(resourcePath)
+  if err != nil && err != errs.ResourceNotFoundError {
+    return ph.response.SetError(err)
+  }
+
+  // PUT is allowed in 2 cases:
+  //
+  // 1. Item NOT FOUND and there is NO ETAG match header: CREATE a new item
+  if !found && !precond.IfMatchPresent() {
+    // create new event resource
+    resource, err = global.Storage.CreateResource(resourcePath, requestBody)
+    if err != nil {
+      return ph.response.SetError(err)
+    }
+
+    success = true
+  }
+
+  if found {
+    // TODO: Handle PUT on collections
+    if resource.IsCollection() {
+      return ph.response.Set(http.StatusPreconditionFailed, "")
+    }
+
+    // 2. Item exists, the resource etag is verified and there's no IF-NONE-MATCH=* header: UPDATE the item
+    resourceEtag, _ := resource.GetEtag()
+    if found && precond.IfMatch(resourceEtag) && !precond.IfNoneMatch("*") {
+      // update resource
+      resource, err = global.Storage.UpdateResource(resourcePath, requestBody)
+      if err != nil {
+        return ph.response.SetError(err)
+      }
+
+      success = true
+    }
+  }
+
+  if !success {
+    return ph.response.Set(http.StatusPreconditionFailed, "")
+  }
+
+  resourceEtag, _ := resource.GetEtag()
+  return ph.response.SetHeader("ETag", resourceEtag).
+                     Set(http.StatusCreated, "")
+}