186 lines
4 KiB
Go
186 lines
4 KiB
Go
package places
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import (
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"crypto/sha1"
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"encoding/json"
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"fmt"
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"net/http"
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"strings"
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"time"
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"github.com/photoprism/photoprism/pkg/s2"
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"github.com/photoprism/photoprism/pkg/txt"
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)
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// Location represents a specific geolocation identified by its S2 ID.
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type Location struct {
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ID string `json:"id"`
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LocLat float64 `json:"lat"`
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LocLng float64 `json:"lng"`
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LocName string `json:"name"`
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LocStreet string `json:"street"`
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LocPostcode string `json:"postcode"`
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LocCategory string `json:"category"`
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Place Place `json:"place"`
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Cached bool `json:"-"`
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}
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const ApiName = "places"
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var Key = "f60f5b25d59c397989e3cd374f81cdd7710a4fca"
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var Secret = "photoprism"
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var UserAgent = "PhotoPrism/dev"
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var ReverseLookupURL = "https://places.photoprism.app/v1/location/%s"
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var Retries = 3
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var RetryDelay = 33 * time.Millisecond
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var client = &http.Client{Timeout: 60 * time.Second}
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func FindLocation(id string) (result Location, err error) {
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if len(id) > 16 || len(id) == 0 {
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return result, fmt.Errorf("invalid cell %s (%s)", id, ApiName)
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}
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start := time.Now()
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lat, lng := s2.LatLng(id)
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if lat == 0.0 || lng == 0.0 {
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return result, fmt.Errorf("skipping lat %f, lng %f (%s)", lat, lng, ApiName)
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}
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if hit, ok := cache.Get(id); ok {
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log.Tracef("places: cache hit for lat %f, lng %f", lat, lng)
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cached := hit.(Location)
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cached.Cached = true
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return cached, nil
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}
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// Compose request URL.
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url := fmt.Sprintf(ReverseLookupURL, id)
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log.Tracef("places: sending request to %s", url)
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// Create GET request instance.
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req, err := http.NewRequest(http.MethodGet, url, nil)
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if err != nil {
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log.Errorf("places: %s", err.Error())
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return result, err
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}
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// Add User-Agent header?
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if UserAgent != "" {
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req.Header.Set("User-Agent", UserAgent)
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}
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// Add API key?
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if Key != "" {
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req.Header.Set("X-Key", Key)
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req.Header.Set("X-Signature", fmt.Sprintf("%x", sha1.Sum([]byte(Key+url+Secret))))
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}
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var r *http.Response
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// Perform request.
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for i := 0; i < Retries; i++ {
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r, err = client.Do(req)
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// Successful?
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if err == nil {
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break
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}
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// Wait before trying again?
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if RetryDelay.Nanoseconds() > 0 {
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time.Sleep(RetryDelay)
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}
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}
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// Failed?
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if err != nil {
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log.Errorf("places: %s (http request)", err.Error())
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return result, err
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} else if r.StatusCode >= 400 {
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err = fmt.Errorf("request failed with code %d (%s)", r.StatusCode, ApiName)
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return result, err
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}
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// Decode JSON response body.
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err = json.NewDecoder(r.Body).Decode(&result)
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if err != nil {
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log.Errorf("places: %s (decode json)", err.Error())
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return result, err
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}
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if result.ID == "" {
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return result, fmt.Errorf("no result for %s (%s)", id, ApiName)
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}
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cache.SetDefault(id, result)
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log.Tracef("places: cached cell %s [%s]", id, time.Since(start))
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result.Cached = false
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return result, nil
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}
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func (l Location) CellID() string {
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return l.ID
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}
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func (l Location) PlaceID() string {
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return l.Place.PlaceID
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}
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func (l Location) Name() (result string) {
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return strings.SplitN(l.LocName, "/", 2)[0]
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}
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func (l Location) Street() (result string) {
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return strings.SplitN(l.LocStreet, "/", 2)[0]
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}
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func (l Location) Postcode() (result string) {
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return strings.SplitN(l.LocPostcode, "/", 2)[0]
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}
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func (l Location) Category() (result string) {
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return l.LocCategory
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}
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func (l Location) Label() (result string) {
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return l.Place.LocLabel
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}
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func (l Location) City() (result string) {
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return l.Place.LocCity
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}
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func (l Location) District() (result string) {
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return l.Place.LocDistrict
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}
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func (l Location) CountryCode() (result string) {
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return l.Place.LocCountry
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}
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func (l Location) State() (result string) {
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return txt.NormalizeState(l.Place.LocState, l.CountryCode())
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}
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func (l Location) Latitude() (result float64) {
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return l.LocLat
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}
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func (l Location) Longitude() (result float64) {
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return l.LocLng
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}
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func (l Location) Keywords() (result []string) {
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return txt.UniqueWords(txt.Words(l.Place.LocKeywords))
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}
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func (l Location) Source() string {
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return "places"
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}
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