Example #1
0
File: logs.go Project: icza/iczagps
// logs is the logic implementation of the Logs page.
func logs(p *page.Params) {
	c := p.AppCtx

	// First get devices
	var devices []*ds.Device
	if devices, p.Err = cache.GetDevListForAccKey(c, p.Account.GetKey(c)); p.Err != nil {
		return
	}
	p.Custom["Devices"] = devices

	fv := p.Request.FormValue

	p.Custom["Before"] = fv("before")
	p.Custom["After"] = fv("after")
	p.Custom["SearchLoc"] = fv("loc")

	if fv("devID") == "" {
		// No device chosen yet
		return
	}

	var err error

	var devID int64
	if devID, err = strconv.ParseInt(string(fv("devID")), 10, 64); err != nil {
		p.ErrorMsg = "Invalid Device! Please select a Device from the list below."
		return
	}
	// Check if device is owned by the user:
	var dev *ds.Device
	for _, d := range devices {
		if d.KeyID == devID {
			dev = d
			p.Custom["Device"] = d
			break
		}
	}

	if dev == nil {
		p.ErrorMsg = "You do not have access to the specified Device! Please select a Device from the list below."
		return
	}

	// Parse filters:
	var before time.Time
	if fv("before") != "" {
		if before, err = p.ParseTime(timeLayout, strings.TrimSpace(fv("before"))); err != nil {
			p.ErrorMsg = template.HTML(`Invalid <span class="highlight">Before</span>!`)
			return
		}
		// Add 1 second to the parsed time because fraction of a second is not parsed but exists,
		// so this new time will also include records which has the same time up to the second part and has millisecond part too.
		before = before.Add(time.Second)
	}
	var after time.Time
	if fv("after") != "" {
		if after, err = p.ParseTime(timeLayout, strings.TrimSpace(fv("after"))); err != nil {
			p.ErrorMsg = template.HTML(`Invalid <span class="highlight">After</span>!`)
			return
		}
	}
	var searchLoc appengine.GeoPoint
	areaCode := int64(-1)
	if dev.Indexed() && fv("loc") != "" {
		// GPS coordinates; lat must be in range -90..90, lng must be in range -180..180
		baseErr := template.HTML(`Invalid <span class="highlight">Location</span>!`)

		var coords = strings.Split(strings.TrimSpace(fv("loc")), ",")
		if len(coords) != 2 {
			p.ErrorMsg = baseErr
			return
		}
		searchLoc.Lat, err = strconv.ParseFloat(coords[0], 64)
		if err != nil {
			p.ErrorMsg = baseErr
			return
		}
		searchLoc.Lng, err = strconv.ParseFloat(coords[1], 64)
		if err != nil {
			p.ErrorMsg = baseErr
			return
		}
		if !searchLoc.Valid() {
			p.ErrorMsg = template.HTML(`Invalid <span class="highlight">Location</span> specified by latitude and longitude! Valid range: [-90, 90] latitude and [-180, 180] longitude`)
			return
		}
		areaCode = AreaCodeForGeoPt(dev.AreaSize, searchLoc.Lat, searchLoc.Lng)
	}
	var page int

	cursorsString := fv("cursors")
	var cursors = strings.Split(cursorsString, ";")[1:] // Split always returns at least 1 element (and we use semicolon separator before cursors)

	// Form values
	if fv("page") == "" {
		page = 1
	} else {
		page, err = strconv.Atoi(fv("page"))
		if err != nil || page < 1 {
			page = 1
		}
		if page > len(cursors) { // If page is provided, so are (should be) the cursors
			page = len(cursors)
		}
	}

	switch {
	case fv("submitFirstPage") != "":
		page = 1
	case fv("submitPrevPage") != "":
		if page > 1 {
			page--
		}
	case fv("submitNextPage") != "":
		page++
	}

	pageSize := p.Account.GetLogsPageSize()

	if ps := fv("pageSize"); ps != "" && ps != strconv.Itoa(pageSize) {
		// Page size has been changed (on Settings page), drop cursors, render page 1
		page = 1
		cursorsString = ""
		cursors = make([]string, 0, 1)
	}

	// 'ts all good, proceed with the query:
	q := datastore.NewQuery(ds.ENameGPS).Filter(ds.PNameDevKeyID+"=", devID)
	if !before.IsZero() {
		q = q.Filter(ds.PNameCreated+"<", before)
	}
	if !after.IsZero() {
		q = q.Filter(ds.PNameCreated+">", after)
	}
	if areaCode >= 0 {
		q = q.Filter(ds.PNameAreaCodes+"=", areaCode)
	}
	q = q.Order("-" + ds.PNameCreated).Limit(pageSize)

	var records = make([]*ds.GPS, 0, pageSize)

	// If there is a cursor, set it.
	// Page - cursor index mapping:     cursors[page-2]
	//     1st page: no cursor, 2nd page: cursors[0], 3nd page: cursors[1], ...
	if page > 1 && page <= len(cursors)+1 {
		var cursor datastore.Cursor
		if cursor, p.Err = datastore.DecodeCursor(cursors[page-2]); p.Err != nil {
			return
		}
		q = q.Start(cursor)
	}

	// Iterate over the results:
	t := q.Run(c)
	for {
		r := new(ds.GPS)
		_, err := t.Next(r)
		if err == datastore.Done {
			break
		}
		if err != nil {
			// Datastore error
			p.Err = err
			return
		}
		records = append(records, r)
		r.Dd = -1 // For now, will be set if applicable
		if r.Track() {
			// Check the previous (in time) record and calculate distance.
			// If previous is not a Track, check the one before that etc.
			for i := len(records) - 2; i >= 0; i-- {
				if prev := records[i]; prev.Track() {
					prev.Dd = Distance(r.GeoPoint.Lat, r.GeoPoint.Lng, prev.GeoPoint.Lat, prev.GeoPoint.Lng)
					prev.Dt = prev.Created.Sub(r.Created)
					break
				}
			}
		}
	}

	if len(records) == 0 {
		// End of list reached, disable Next page button:
		p.Custom["EndOfList"] = true
	}

	if page == 1 || page > len(cursors) {
		// Get updated cursor and store it for next page:
		var cursor datastore.Cursor
		if cursor, p.Err = t.Cursor(); p.Err != nil {
			return
		}
		cursorString := cursor.String()
		if page == 1 {
			// If new records were inserted, they appear on the first page in which case
			// the cursor for the 2nd page changes (and all other cursors will change).
			// In this case drop all the cursors:
			if len(cursors) > 0 && cursors[0] != cursorString {
				cursorsString = ""
				cursors = make([]string, 0, 1)
			}
		} else {
			// When end of list is reached, the same cursor will be returned
			if len(records) == 0 && page == len(cursors)+1 && cursors[page-2] == cursorString {
				// Add 1 extra, empty page, but not more.
				if page > 2 && cursors[page-3] == cursorString {
					// An extra, empty page has already been added, do not add more:
					page--
				}
			}
		}

		if page > len(cursors) {
			cursors = append(cursors, cursorString)
			cursorsString += ";" + cursorString
		}
	}

	// Calculate labels: '1'..'9' then 'A'...
	for i, lbl := len(records)-1, '1'; i >= 0; i-- {
		if r := records[i]; r.Track() {
			r.Label = lbl
			if lbl == '9' {
				lbl = 'A' - 1
			}
			lbl++
		}
	}

	p.Custom["CursorList"] = cursors
	p.Custom["Cursors"] = cursorsString

	p.Custom["Page"] = page
	p.Custom["PageSize"] = pageSize
	p.Custom["RecordOffset"] = (page-1)*pageSize + 1
	p.Custom["Records"] = records
	if p.Mobile {
		p.Custom["MapWidth"], p.Custom["MapHeight"] = p.Account.GetMobMapPrevSize()
		p.Custom["MapImgFormat"] = p.Account.GetMobMapImgFormat()
	} else {
		p.Custom["MapWidth"], p.Custom["MapHeight"] = p.Account.GetMapPrevSize()
	}
	p.Custom["APIKey"] = "AIzaSyCEU_tZ1n0-mMg4woGKIfPqdbi0leSKvjg"
	p.Custom["AllMarkers"] = allMarkers(records)

	if len(records) == 0 {
		if page == 1 {
			if before.IsZero() && after.IsZero() && areaCode < 0 {
				p.Custom["PrintNoRecordsForDev"] = true
			} else {
				p.Custom["PrintNoMatchForFilters"] = true
			}
		} else {
			p.Custom["PrintNoMoreRecords"] = true
		}
	}
}
Example #2
0
// alerts is the logic implementation of the Alerts page.
func alerts(p *page.Params) {
	c := p.AppCtx

	// First get devices
	var devices []*ds.Device
	if devices, p.Err = cache.GetDevListForAccKey(c, p.Account.GetKey(c)); p.Err != nil {
		return
	}
	p.Custom["Devices"] = devices

	fv := p.Request.PostFormValue

	// Detect form submits:
	switch {
	case fv("submitAdd") != "":
		// Add New Alert form submitted!
		// Checks:
		switch {
		case !checkDeviceID(p, fv("carDeviceID"), true, devices):
		case !checkDeviceID(p, fv("persMobDeviceID"), false, devices):
		}
		if p.ErrorMsg == nil {
			// So far so good. Futher checks: car and personal mobile device must differ
			carDevID, _ := strconv.ParseInt(fv("carDeviceID"), 10, 64)
			var persMobDevID int64
			if fv("persMobDeviceID") != "" {
				persMobDevID, _ = strconv.ParseInt(fv("persMobDeviceID"), 10, 64)
				if carDevID == persMobDevID {
					p.ErrorMsg = template.HTML(`<span class="code">Car GPS Device</span> and <span class="code">Personal Mobile GPS Device</span> cannot be the same!`)
				}
			}
			if p.ErrorMsg == nil {
				// So far still good. Furter check: same alert cannot be saved twice
				q := datastore.NewQuery(ds.ENameAlert).Ancestor(p.Account.GetKey(c))
				var alerts []*ds.Alert
				if _, p.Err = q.GetAll(c, &alerts); p.Err != nil {
					return
				}
				for _, alert := range alerts {
					if alert.CarDevID == carDevID && alert.PersMobDevID == persMobDevID {
						p.ErrorMsg = template.HTML(`An Alert with the same <span class="code">Car GPS Device</span> and <span class="code">Personal Mobile GPS Device</span> already exists!`)
					}
				}
			}
			if p.ErrorMsg == nil {
				// All data OK, save new Alert
				alert := ds.Alert{carDevID, persMobDevID, time.Now(), 0, "", ""}
				if _, p.Err = datastore.Put(c, datastore.NewIncompleteKey(c, ds.ENameAlert, p.Account.GetKey(c)), &alert); p.Err != nil {
					return // Datastore error
				}
				p.InfoMsg = "New Alert saved successfully."
			}
		}
	case fv("submitDelete") != "":
		// Delete Alert form submitted!
		if alertID, err := strconv.ParseInt(string(fv("alertID")), 10, 64); err != nil {
			p.ErrorMsg = "Invalid Alert!"
		} else {
			alertKey := datastore.NewKey(c, ds.ENameAlert, "", alertID, p.Account.GetKey(c))
			// Check if
			var alert ds.Alert
			if err = datastore.Get(c, alertKey, &alert); err != nil {
				if err == datastore.ErrNoSuchEntity {
					p.ErrorMsg = "You do not have access to the specified Alert!"
				} else {
					// Real datastore error
					p.Err = err
					return
				}
			} else {
				// Proceed to delete
				if p.Err = datastore.Delete(c, alertKey); p.Err != nil {
					return // Datastore error
				}
				p.InfoMsg = "Alert deleted successfully."
			}
		}
	}

	q := datastore.NewQuery(ds.ENameAlert).Ancestor(p.Account.GetKey(c))

	var alerts []*ds.Alert
	var alertKeys []*datastore.Key
	if alertKeys, p.Err = q.GetAll(c, &alerts); p.Err != nil {
		return
	}
	for i, alert := range alerts {
		alert.KeyID = alertKeys[i].IntID()
		for _, d := range devices {
			switch d.KeyID {
			case alert.CarDevID:
				alert.CarDevName = d.Name
			case alert.PersMobDevID:
				alert.PersMobDevName = d.Name
			}
		}
	}

	p.Custom["Alerts"] = alerts
}