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exchangeclient.go
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exchangeclient.go
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package main
import (
"bytes"
"io/ioutil"
"log"
"net/http"
"text/template"
"time"
)
type ExchangeConfig interface {
ExchangeURL() string
MaxFetchSize() int
}
var exchangeConfig ExchangeConfig
func SetExchangeConfig(config ExchangeConfig) {
exchangeConfig = config
}
func GetFolderAndChangeKey(user User) User {
soapReq, err := ioutil.ReadFile("xml/soapFolderRequest.xml")
if err != nil {
log.Printf("Error is", err)
}
results, err := postContents(soapReq, user)
if err != nil {
log.Println(err)
}
item := ParseCalendarFolder(string(results))
user.Folderid = item.Id
user.Changekey = item.ChangeKey
user.State = exchangeLoginVerified
user.Save()
return user
}
func GetExchangeAppointments(user User) []Appointment {
// This first call will just get ids for each appt
soapResults := getExchangeCalendarData(user)
itemIds := ParseAppointments(soapResults)
// This call will get all the fields given the ids
soapResults = getExchangeAppointmentBodyData(itemIds, user)
appointments := ParseAppointments(soapResults)
return appointments
}
func getExchangeAppointmentBodyData(itemIds []Appointment, user User) string {
soapRequest := buildCalendarDetailRequest(itemIds)
soapResponse, err := postContents(soapRequest, user)
if err != nil {
log.Println("Error while getting soap response")
log.Fatal(err)
}
return soapResponse
}
func buildCalendarDetailRequest(itemIds []Appointment) []byte {
data := struct {
Appointments []Appointment
}{
itemIds,
}
t, err := template.ParseFiles("xml/soapCalendarDetailRequest.xml")
if err != nil {
log.Printf("Error is", err)
}
var doc bytes.Buffer
t.Execute(&doc, data)
if err != nil {
log.Printf("Error while building contents ", err)
}
return doc.Bytes()
}
func getExchangeCalendarData(user User) string {
soapRequest := buildCalendarItemRequest(user.Folderid, user.Changekey)
soapResponse, err := postContents(soapRequest, user)
if err != nil {
log.Println("Error while getting soap response", err)
return ""
}
return soapResponse
}
func buildCalendarItemRequest(folderid string, changekey string) []byte {
startDate := time.Now().UTC().Format(time.RFC3339)
endDate := time.Now().UTC().AddDate(0, 0, 14).Format(time.RFC3339)
data := struct {
StartDate string
EndDate string
FolderId string
ChangeKey string
MaxFetchSize int
}{
startDate,
endDate,
folderid,
changekey,
exchangeConfig.MaxFetchSize(),
}
t, err := template.ParseFiles("xml/soapCalendarRequest.xml")
if err != nil {
log.Printf("Error is", err)
}
var doc bytes.Buffer
t.Execute(&doc, data)
if err != nil {
log.Printf("Error while building contents ", err)
}
return doc.Bytes()
}
func postContents(contents []byte, user User) (string, error) {
req2, err := http.NewRequest("POST", exchangeConfig.ExchangeURL(), bytes.NewBuffer(contents))
req2.Header.Set("Host", user.Username+"@webmail.vwgoa.com")
req2.Header.Set("Content-Type", "text/xml")
req2.SetBasicAuth("na/"+user.Username, user.Password)
client := &http.Client{}
response, err := client.Do(req2)
defer response.Body.Close()
content, err := ioutil.ReadAll(response.Body)
if err != nil {
log.Println(err)
}
return string(content), nil
}