/**
* Handler to load all mails for a given folder.
*/
func (web *MailWeb) mails(r render.Render, user sessionauth.User, req *http.Request) {
var (
mails []mail.Mail = []mail.Mail{}
watneyUser *auth.WatneyUser = user.(*auth.WatneyUser)
)
if nil != watneyUser && watneyUser.IsAuthenticated() {
switch req.FormValue("mailInformation") {
case mail.FULL:
mails, _ = watneyUser.ImapCon.LoadAllMailsFromFolder(req.FormValue("mailbox"))
case mail.OVERVIEW:
fallthrough
default:
mails, _ = watneyUser.ImapCon.LoadAllMailOverviewsFromFolder(req.FormValue("mailbox"))
}
// Reverse the retrieved mail array
sort.Sort(mail.MailSlice(mails))
r.JSON(200, mails)
} else {
web.notifyAuthTimeout(r, "Retrieve mail overview")
}
}
/**
* Handler to check, whether new mails have arrived in the meantime.
*/
func (web *MailWeb) poll(r render.Render, user sessionauth.User, session sessions.Session,
req *http.Request) {
var watneyUser *auth.WatneyUser = user.(*auth.WatneyUser)
// 1) Check for authentication status, and return if no user is given or not authenticated
if nil == watneyUser || !watneyUser.IsAuthenticated() {
web.notifyAuthTimeout(r, "Poll for new mails")
return
}
// 2) Check, whether new mails have arrived since the last poll
// recentMails[0] -> nbr of new mails | recentMails[1] - last sequence number in mail list
if newMailSeqNbrs, err := watneyUser.ImapCon.CheckNewMails(); err != nil {
// 2a) Check for new mails failed for some reason
web.notifyError(r, 500, fmt.Sprintf("Error while checking for new mails"), err.Error())
} else if len(newMailSeqNbrs) > 0 {
// 2b) If new mails have arrived, load them from the mail server
if mails, err := watneyUser.ImapCon.LoadNMailsFromFolderWithSeqNbrs("/", newMailSeqNbrs); err == nil {
// If the number of loaded mails is not equal to the number of new mail UIDs, send error
if len(newMailSeqNbrs) != len(mails) {
web.notifyError(r, 500,
fmt.Sprintf("New mails are available, but they couldn't be retrieved"),
fmt.Sprintf("Expected %d mail(s), but could only load %d mail(s)",
len(newMailSeqNbrs), len(mails)))
return
}
// Reverse the retrieved mail array
sort.Sort(mail.MailSlice(mails))
// Return the mails as json
r.JSON(200, mails)
return
}
// TODO: If the mail loading failed, the information about the recent mails
// will be lost at that point => counteract
web.notifyError(r, 500,
fmt.Sprintf("New mails are available, but they couldn't be retrieved"), err.Error())
return
}
// 3) No new mails have arrived
r.JSON(200, make([]mail.Mail, 0))
}