151 lines
3.2 KiB
Go
151 lines
3.2 KiB
Go
package meta
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import (
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"encoding/json"
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"fmt"
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"runtime/debug"
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"time"
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"gopkg.in/ugjka/go-tz.v2/tz"
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)
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type GPhoto struct {
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Title string `json:"title"`
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Description string `json:"description"`
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Views int `json:"imageViews,string"`
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Geo GGeo `json:"geoData"`
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TakenAt GTime `json:"photoTakenTime"`
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CreatedAt GTime `json:"creationTime"`
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UpdatedAt GTime `json:"modificationTime"`
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}
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func (m GPhoto) SanitizedTitle() string {
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return SanitizeTitle(m.Title)
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}
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func (m GPhoto) SanitizedDescription() string {
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return SanitizeDescription(m.Description)
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}
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type GMeta struct {
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Album GAlbum `json:"albumData"`
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}
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type GAlbum struct {
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Title string `json:"title"`
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Description string `json:"description"`
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Access string `json:"access"`
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Location string `json:"location"`
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Date GTime `json:"date"`
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Geo GGeo `json:"geoData"`
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}
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func (m GAlbum) Exists() bool {
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return m.Title != ""
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}
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type GGeo struct {
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Lat float64 `json:"latitude"`
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Lng float64 `json:"longitude"`
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Altitude float64 `json:"altitude"`
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}
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func (m GGeo) Exists() bool {
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return m.Lat != 0.0 && m.Lng != 0.0
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}
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type GTime struct {
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Unix int64 `json:"timestamp,string"`
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Formatted string `json:"formatted"`
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}
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func (m GTime) Exists() bool {
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return m.Unix > 0
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}
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func (m GTime) Time() time.Time {
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return time.Unix(m.Unix, 0).UTC()
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}
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// Parses JSON sidecar data as created by Google Photos.
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func (data *Data) GMeta(jsonData []byte) (err error) {
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defer func() {
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if e := recover(); e != nil {
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err = fmt.Errorf("metadata: %s (gmeta panic)\nstack: %s", e, debug.Stack())
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}
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}()
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p := GMeta{}
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if err := json.Unmarshal(jsonData, &p); err != nil {
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return err
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}
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if p.Album.Exists() {
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data.Albums = append(data.Albums, p.Album.Title)
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}
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return nil
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}
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// Parses JSON photo sidecar data as created by Google Photos.
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func (data *Data) GPhoto(jsonData []byte) (err error) {
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defer func() {
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if e := recover(); e != nil {
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err = fmt.Errorf("metadata: %s (gphoto panic)\nstack: %s", e, debug.Stack())
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}
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}()
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p := GPhoto{}
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if err := json.Unmarshal(jsonData, &p); err != nil {
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return err
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}
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if s := p.SanitizedTitle(); s != "" {
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data.Title = s
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}
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if s := p.SanitizedDescription(); s != "" {
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data.Description = s
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}
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if p.Views > 0 {
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data.Views = p.Views
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}
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if p.TakenAt.Exists() {
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data.TakenAt = p.TakenAt.Time()
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data.TakenAtLocal = p.TakenAt.Time()
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}
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if p.Geo.Exists() {
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data.Lat = float32(p.Geo.Lat)
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data.Lng = float32(p.Geo.Lng)
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data.Altitude = int(p.Geo.Altitude)
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}
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// Set time zone and calculate UTC time.
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if data.Lat != 0 && data.Lng != 0 {
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zones, err := tz.GetZone(tz.Point{
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Lat: float64(data.Lat),
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Lon: float64(data.Lng),
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})
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if err == nil && len(zones) > 0 {
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data.TimeZone = zones[0]
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}
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if !data.TakenAtLocal.IsZero() {
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if loc, err := time.LoadLocation(data.TimeZone); err != nil {
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log.Warnf("metadata: unknown time zone %s (gphotos)", data.TimeZone)
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} else if tl, err := time.ParseInLocation("2006:01:02 15:04:05", data.TakenAtLocal.Format("2006:01:02 15:04:05"), loc); err == nil {
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data.TakenAt = tl.Round(time.Second).UTC()
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} else {
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log.Errorf("metadata: %s (gphotos)", err.Error()) // this should never happen
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}
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}
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}
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return nil
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}
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