* Added item query

* Request more properties
This commit is contained in:
Andreas Schneider 2018-03-31 15:57:06 +02:00
parent e1e0afd6b6
commit 678578dcac
1 changed files with 71 additions and 5 deletions

View File

@ -1,6 +1,7 @@
package main
import (
"bytes"
"encoding/xml"
"fmt"
"io"
@ -29,11 +30,10 @@ type EWSCalendar struct {
url string
username string
password string
items []CalendarItem
}
func NewEWSCalendar(url, username, password string) *EWSCalendar {
// Prepare a cookie jar so we don't have to provide basic auth credentials multiple times.
// Prepare a cookie jar, since EWS uses some.
jar, err := cookiejar.New(nil)
if err != nil {
panic(err)
@ -52,6 +52,7 @@ func (e *EWSCalendar) prepareRequest(body io.Reader) (req *http.Request, err err
req, err = http.NewRequest(http.MethodPost, e.url, body)
req.Header.Set("Content-Type", "text/xml")
req.Header.Set("Accept", "text/xml")
req.SetBasicAuth(e.username, e.password)
return
}
@ -60,8 +61,6 @@ func (e *EWSCalendar) getCalendarFolderID() (id *FolderId, err error) {
if err != nil {
return
}
// For the first request we need an authentication header
req.SetBasicAuth(e.username, e.password)
resp, err := e.httpClient.Do(req)
if err != nil {
@ -98,6 +97,59 @@ func (e *EWSCalendar) getCalendarFolderID() (id *FolderId, err error) {
}
}
func (e *EWSCalendar) getCalendarItems(folder *FolderId, start, end time.Time) (items []CalendarItem, err error) {
b := &bytes.Buffer{}
model := struct {
FolderId *FolderId
StartDate string
EndDate string
}{folder, start.Format(time.RFC3339), end.Format(time.RFC3339)}
err = calendarQuery.Execute(b, &model)
if err != nil {
return
}
req, err := e.prepareRequest(b)
if err != nil {
return
}
resp, err := e.httpClient.Do(req)
if err != nil {
return
}
if resp.StatusCode != http.StatusOK {
err = fmt.Errorf("unexpected status when querying calendar items: %d", resp.StatusCode)
return
}
d := xml.NewDecoder(resp.Body)
defer resp.Body.Close()
for {
var t xml.Token
t, err = d.Token()
if err == io.EOF {
err = nil
return
} else if err != nil {
return
}
switch t := t.(type) {
case xml.StartElement:
if t.Name.Local == "CalendarItem" {
item := CalendarItem{}
err = d.DecodeElement(&item, &t)
items = append(items, item)
}
}
}
return
}
func main() {
e := NewEWSCalendar("https://outlook.live.com/EWS/Exchange.asmx", "", "")
id, err := e.getCalendarFolderID()
@ -105,7 +157,16 @@ func main() {
log.Println(err)
return
}
fmt.Println(id)
items, err := e.getCalendarItems(id, time.Now().AddDate(0, -1, 0), time.Now().AddDate(0, 2, 0))
if err != nil {
log.Println(err)
return
}
for _, item := range items {
fmt.Printf("%#v\n", item)
}
}
const folderIdRequest = `<?xml version="1.0" encoding="utf-8"?>
@ -136,9 +197,14 @@ var calendarQuery = template.Must(template.New("calendarQuery").Parse(`<?xml ver
<t:BaseShape>IdOnly</t:BaseShape>
<t:AdditionalProperties>
<t:FieldURI FieldURI="item:Subject" />
<t:FieldURI FieldURI="item:Sensitivity" />
<t:FieldURI FieldURI="calendar:Start" />
<t:FieldURI FieldURI="calendar:End" />
<t:FieldURI FieldURI="calendar:UID" />
<t:FieldURI FieldURI="calendar:RecurrenceId" />
<t:FieldURI FieldURI="calendar:IsCancelled" />
<t:FieldURI FieldURI="calendar:CalendarItemType" />
<t:FieldURI FieldURI="calendar:CalendarItemType" />
</t:AdditionalProperties>
</m:ItemShape>
<m:CalendarView StartDate="{{ .StartDate }}" EndDate="{{ .EndDate }}" />