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messaging.go
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messaging.go
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package main
import (
"database/sql"
"fmt"
"io"
"net/http"
"os"
"strconv"
log "github.com/Sirupsen/logrus"
"github.com/gorilla/context"
"github.com/gorilla/mux"
"github.com/irrenhaus/pushmearound_server/httpresponse"
"github.com/irrenhaus/pushmearound_server/models"
"github.com/satori/go.uuid"
)
func sendMessageToDevice(msg models.Message, deviceID string) *models.ReceivedMessage {
destinationDevice, err := models.FindDevice(DB, deviceID)
if err != nil {
return nil
}
receivedMessage := models.ReceivedMessage{
DeviceID: destinationDevice.ID,
MessageID: msg.ID,
Unread: true,
}
if err := receivedMessage.Create(DB); err != nil {
return nil
}
return &receivedMessage
}
func SendMessageHandler(resp http.ResponseWriter, req *http.Request) {
user, ok := context.Get(req, ContextKeyUser).(models.User)
if !ok {
httpresponse.InternalServerError("Could not convert user").WriteJSON(resp)
return
}
// Store to 100M in memory
if err := req.ParseMultipartForm(100 * 1024 * 1024); err != nil {
log.WithFields(log.Fields{"error": err}).Warn("Failed to parse multipart form for message sending")
httpresponse.InternalServerError("Failed to parse multipart form").WriteJSON(resp)
return
}
msg := models.Message{
UserID: user.ID,
}
var contentType uint64
var err error
deviceID := req.PostFormValue("device_id")
device, err := models.FindDevice(DB, deviceID)
if err != nil {
httpresponse.BadRequest("No such device").WriteJSON(resp)
return
}
msg.DeviceID = device.ID
msg.Title = req.PostFormValue("title")
msg.Msg = req.PostFormValue("text")
msg.URL = req.PostFormValue("url")
if contentType, err = strconv.ParseUint(req.PostFormValue("content_type"), 10, 32); err != nil {
httpresponse.BadRequest("content_type has to be an uint").WriteJSON(resp)
return
}
if contentType >= models.ContentTypeLast {
httpresponse.BadRequest("Unknown content type").WriteJSON(resp)
return
}
msg.ContentType = uint(contentType)
// File upload
if msg.ContentType == models.ContentTypeFile {
file, _, err := req.FormFile("sendfile")
if err != nil {
fmt.Println("File upload failed:")
fmt.Println(err)
httpresponse.BadRequest("Message type file selected without uploading file").WriteJSON(resp)
return
}
defer file.Close()
msg.File = uuid.NewV4().String()
f, err := os.OpenFile("./upload/"+msg.File, os.O_WRONLY|os.O_CREATE, 0666)
if err != nil {
fmt.Println(err)
return
}
defer f.Close()
if _, err := io.Copy(f, file); err != nil {
fmt.Println("Copying uploaded file failed:")
fmt.Println(err)
httpresponse.InternalServerError("File upload failed").WriteJSON(resp)
return
}
}
if err := msg.Create(DB); err != nil {
httpresponse.InternalServerError("Sending the message failed").WriteJSON(resp)
os.Remove(msg.File)
return
}
destinationDeviceID := req.PostFormValue("dest_id")
if err == nil {
// We have a destination device ID
if sendMessageToDevice(msg, destinationDeviceID) == nil {
httpresponse.InternalServerError("Sending the message failed").WriteJSON(resp)
msg.Delete(DB)
os.Remove(msg.File)
}
return
}
sentMessages := []*models.ReceivedMessage{}
for _, device := range user.Devices {
receivedMessage := sendMessageToDevice(msg, device.ID)
if receivedMessage == nil {
httpresponse.InternalServerError(fmt.Sprintf("Sending the message to the device %s failed", device.Name)).WriteJSON(resp)
for _, sentMessage := range sentMessages {
sentMessage.Delete(DB)
}
msg.Delete(DB)
os.Remove(msg.File)
return
}
sentMessages = append(sentMessages, receivedMessage)
}
return
}
func UnreadMessageHandler(resp http.ResponseWriter, req *http.Request) {
user, ok := context.Get(req, ContextKeyUser).(models.User)
if !ok {
httpresponse.InternalServerError("Could not convert user").WriteJSON(resp)
return
}
receivedMessages := []models.ReceivedMessage{}
deviceID := req.FormValue("device")
if deviceID != "" {
// We have got a device ID
err := user.LoadDevices(DB)
if err != nil {
if err != sql.ErrNoRows {
log.WithFields(log.Fields{"user": user.ID, "device": deviceID}).Error("SQL error upon loading a users devices")
httpresponse.InternalServerError("Error finding users devices").WriteJSON(resp)
return
}
httpresponse.NotFound("No device found for your user").WriteJSON(resp)
return
}
isUserDevice := false
for _, d := range user.Devices {
if d.ID == deviceID {
isUserDevice = true
break
}
}
if !isUserDevice {
httpresponse.NotFound("No such device").WriteJSON(resp)
return
}
receivedMessages, err = models.FindUnreadReceivedMessagesByDevice(DB, deviceID)
if err != nil {
if err != sql.ErrNoRows {
log.WithFields(log.Fields{"device": deviceID, "error": err}).Error("SQL error while searching unread messages")
}
httpresponse.NotFound("Could not find any unread messages for this device").WriteJSON(resp)
return
}
} else {
// No device ID, just collect all unread messages for this user
var err error
receivedMessages, err = models.FindUnreadReceivedMessagesByUser(DB, user.ID)
if err != nil {
fmt.Println("Could not find all unread messages for user:", err)
httpresponse.InternalServerError("Could not find any unread messages for this user").WriteJSON(resp)
return
}
}
messageIDs := []uint{}
for _, receivedMessage := range receivedMessages {
messageIDs = append(messageIDs, receivedMessage.MessageID)
}
msgs, err := models.FindMessageList(DB, messageIDs)
if err != nil {
if err == sql.ErrNoRows {
log.WithFields(log.Fields{"messages": msgs, "received": receivedMessages}).Error("Could not find messages for ReceivedMessages")
} else {
log.WithFields(log.Fields{"messages": msgs, "error": err}).Error("SQL error while loading messages for received messages")
}
httpresponse.NotFound("Could not find any unread messages for this device").WriteJSON(resp)
return
}
response := httpresponse.Success("")
response.Data = msgs
response.WriteJSON(resp)
}
func UpdateMessageHandler(resp http.ResponseWriter, req *http.Request) {
user, ok := context.Get(req, ContextKeyUser).(models.User)
if !ok {
httpresponse.InternalServerError("Could not convert user").WriteJSON(resp)
return
}
vars := mux.Vars(req)
msgId, err := strconv.ParseUint(vars["msg"], 10, 32)
if err != nil {
log.WithFields(log.Fields{"msgId": vars["msg"], "err": ok}).Warn("Could not parse message id")
httpresponse.BadRequest("Invalid message ID").WriteJSON(resp)
return
}
msg, err := models.FindReceivedMessageByMessage(DB, uint(msgId))
if err != nil {
if err != sql.ErrNoRows {
log.WithFields(log.Fields{"user": user.ID, "msg": msgId}).Error("SQL error while searching for message to update")
}
httpresponse.NotFound("No such message found").WriteJSON(resp)
return
}
device, err := models.FindDevice(DB, msg.DeviceID)
if err != nil {
if err != sql.ErrNoRows {
log.WithFields(log.Fields{"user": user.ID, "msg": msg.ID, "device": msg.DeviceID}).Error("SQL error while searching for messages device")
} else {
log.WithFields(log.Fields{"user": user.ID, "msg": msg.ID, "device": msg.DeviceID}).Warn("No device found for message")
}
httpresponse.NotFound("Error resolving receiving device").WriteJSON(resp)
return
}
if device.UserID != user.ID {
httpresponse.NotFound("No such message").WriteJSON(resp)
return
}
dirty := false
unread, err := strconv.ParseBool(req.FormValue("unread"))
if err != nil {
msg.Unread = unread
}
if dirty {
if err := msg.Update(DB); err != nil {
log.WithFields(log.Fields{"msg": msg.ID, "error": err}).Error("SQL error while updating received message")
}
}
}