func geocodeBuildings(c *maps.Client) error {
buildings, err := models.LoadMapData()
if err != nil {
return err
}
for _, b := range buildings {
if b.Position != nil || len(b.Address) == 0 {
continue
}
log.Printf("geocoding %s", b.Name)
req := &maps.GeocodingRequest{
Address: b.Address,
Region: "ca",
}
result, err := c.Geocode(context.TODO(), req)
if err != nil {
return err
}
if len(result) == 0 {
continue
}
loc := result[0].Geometry.Location
b.Position = &models.LatLng{
Lat: loc.Lat,
Lng: loc.Lng,
}
time.Sleep(100 * time.Millisecond)
if err := models.SaveMapData(buildings); err != nil {
return err
}
}
for _, b := range buildings {
if len(b.Floors) == 0 {
continue
}
var lat, lng float64
c := float64(len(b.Floors) * 2)
for _, f := range b.Floors {
lat += f.Coords.North
lat += f.Coords.South
lng += f.Coords.West
lng += f.Coords.East
for _, r := range f.Rooms {
lat += r.Position.Lat
lng += r.Position.Lng
c += 1
}
}
b.Position.Lat = lat / c
b.Position.Lng = lng / c
}
return models.SaveMapData(buildings)
}
// saveBuilding saves the changes made to a building.
func (s *Server) saveBuilding(w http.ResponseWriter, r *auth.AuthenticatedRequest) {
b := &models.Building{}
if err := json.NewDecoder(r.Body).Decode(b); err != nil {
http.Error(w, err.Error(), 400)
return
}
for i, b2 := range s.buildings {
if b2.SIS != b.SIS {
continue
}
for _, f := range b.Floors {
dx, dy := newDimentions(f.Coords.DLng(), f.Coords.DLat(), f.Rotation)
affine := graphics.I.Rotate(f.Rotation)
log.Printf("DX %f DY %f", dx, dy)
for _, r := range f.Rooms {
if r.RelPosition == nil {
continue
}
rotated := affine.Mul(graphics.Affine{
(r.RelPosition.Lng - 0.5) * f.Coords.DLng(), 0, 0,
(1 - r.RelPosition.Lat - 0.5) * f.Coords.DLat(), 0, 0,
1, 1, 1,
})
px := (rotated[0]/dx + 0.5)
py := (rotated[3]/dy + 0.5)
log.Printf("(%f, %f) -> (%f, %f)", r.RelPosition.Lng, r.RelPosition.Lat, px, py)
lat := (py)*f.Coords.DLat() + f.Coords.South
lng := (px)*f.Coords.DLng() + f.Coords.West
r.Position = &models.LatLng{
Lat: lat,
Lng: lng,
}
}
}
s.buildings[i] = b
if err := models.SaveMapData(s.buildings); err != nil {
http.Error(w, err.Error(), 500)
return
}
w.Header().Set("Content-Type", "application/json")
json.NewEncoder(w).Encode(s.buildings[i])
return
}
http.Error(w, "building SIS not found", 404)
}
func scrapeBuildings() error {
buildings, err := models.LoadMapData()
if err != nil {
return err
}
doc, err := goquery.NewDocument("http://www.maps.ubc.ca/PROD/buildingsListAll.php")
if err != nil {
return err
}
detailsDup := make(map[string]bool)
var details []string
doc.Find("a[href]").Each(func(i int, sel *goquery.Selection) {
href, exists := sel.Attr("href")
if !exists || !strings.HasPrefix(href, "index_detail.php?") || detailsDup[href] {
return
}
detailsDup[href] = true
details = append(details, href)
})
relChan := make(chan string, 1)
defer close(relChan)
outChan := make(chan *models.Building, 1)
defer close(outChan)
for _ = range make([]interface{}, 20) {
go fetchDetails(relChan, outChan)
}
go func() {
for _, rel := range details {
relChan <- rel
}
}()
var scrapedBuildings []*models.Building
for b := range outChan {
if len(b.SIS) == 0 {
b.SIS = customSIS[b.Name]
}
scrapedBuildings = append(scrapedBuildings, b)
if len(scrapedBuildings) == len(details) {
break
}
}
buildingIndex := make(map[string]*models.Building)
for _, building := range buildings {
buildingIndex[building.SIS] = building
}
for _, b := range scrapedBuildings {
if len(b.SIS) == 0 {
continue
}
if b2, ok := buildingIndex[b.SIS]; ok {
b2.Address = b.Address
b2.Image = b.Image
b2.Description = b.Description
continue
}
buildingIndex[b.SIS] = b
buildings = append(buildings, b)
}
return models.SaveMapData(buildings)
}
