Prepare calendar query template

src/calanonsync/calanonsync.go

@@ -8,6 +8,7 @@ import (
 	"net/http"
 	"net/http/cookiejar"
 	"strings"
+	"text/template"
 	"time"
 )
 
@@ -123,3 +124,27 @@ const folderIdRequest = `<?xml version="1.0" encoding="utf-8"?>
     </m:GetFolder>
   </soap:Body>
 </soap:Envelope>`
+
+var calendarQuery = template.Must(template.New("calendarQuery").Parse(`<?xml version="1.0" encoding="utf-8"?>
+<soap:Envelope xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:m="http://schemas.microsoft.com/exchange/services/2006/messages" xmlns:t="http://schemas.microsoft.com/exchange/services/2006/types" xmlns:soap="http://schemas.xmlsoap.org/soap/envelope/">
+  <soap:Header>
+    <t:RequestServerVersion Version="Exchange2013_SP1" />
+  </soap:Header>
+  <soap:Body>
+    <m:FindItem Traversal="Shallow">
+      <m:ItemShape>
+        <t:BaseShape>IdOnly</t:BaseShape>
+        <t:AdditionalProperties>
+          <t:FieldURI FieldURI="item:Subject" />
+          <t:FieldURI FieldURI="calendar:Start" />
+          <t:FieldURI FieldURI="calendar:End" />
+          <t:FieldURI FieldURI="calendar:UID" />
+        </t:AdditionalProperties>
+      </m:ItemShape>
+      <m:CalendarView StartDate="{{ .StartDate }}" EndDate="{{ .EndDate }}" />
+      <m:ParentFolderIds>
+        <t:FolderId Id="{{ .FolderId.Id }}" ChangeKey="{{ .FolderId.ChangeKey }}" />
+      </m:ParentFolderIds>
+    </m:FindItem>
+  </soap:Body>
+</soap:Envelope>`))