mirror of https://github.com/jlelse/GoBlog
119 lines
2.8 KiB
Go
119 lines
2.8 KiB
Go
package main
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import (
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"encoding/json"
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"errors"
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"log"
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"math"
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"github.com/tkrajina/gpxgo/gpx"
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"golang.org/x/text/language"
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"golang.org/x/text/message"
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)
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func (p *post) HasTrip() bool {
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return p.firstParameter("gpx") != ""
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}
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type tripRenderResult struct {
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HasPoints bool
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Paths [][]*tripPoint
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PathsJSON string
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Kilometers string
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Hours string
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Name string
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}
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func (a *goBlog) renderTrip(p *post) (result *tripRenderResult, err error) {
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gpxString := p.firstParameter("gpx")
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if gpxString == "" {
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return nil, errors.New("no gpx parameter in post")
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}
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// Parse GPX
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parseResult, err := tripParseGPX(gpxString)
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if err != nil {
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return nil, err
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}
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l, _ := language.Parse(a.cfg.Blogs[p.Blog].Lang)
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lp := message.NewPrinter(l)
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pathsJSON, err := json.Marshal(parseResult.paths)
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if err != nil {
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return nil, err
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}
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result = &tripRenderResult{
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HasPoints: len(parseResult.paths) > 0 && len(parseResult.paths[0]) > 0,
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Paths: parseResult.paths,
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PathsJSON: string(pathsJSON),
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Name: parseResult.gpxData.Name,
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Kilometers: lp.Sprintf("%.2f", parseResult.md.MovingDistance/1000),
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Hours: lp.Sprintf(
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"%.0f:%2.0f:%2.0f",
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math.Floor(parseResult.md.MovingTime/3600), // Hours
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math.Floor(math.Mod(parseResult.md.MovingTime, 3600)/60), // Minutes
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math.Floor(math.Mod(parseResult.md.MovingTime, 60)), // Seconds
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),
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}
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log.Println(string(pathsJSON))
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return result, nil
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}
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type tripPoint struct {
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Lat, Lon float64
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}
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type tripParseResult struct {
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paths [][]*tripPoint
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gpxData *gpx.GPX
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md *gpx.MovingData
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}
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func tripParseGPX(gpxString string) (result *tripParseResult, err error) {
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result = &tripParseResult{}
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type tripPath struct {
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gpxMovingData *gpx.MovingData
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points []*tripPoint
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}
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var paths []*tripPath
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result.gpxData, err = gpx.ParseString(gpxString)
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if err != nil {
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return nil, err
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}
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for _, track := range result.gpxData.Tracks {
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for _, segment := range track.Segments {
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md := segment.MovingData()
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path := &tripPath{
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gpxMovingData: &md,
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}
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for _, point := range segment.Points {
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path.points = append(path.points, &tripPoint{
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Lat: point.GetLatitude(), Lon: point.GetLongitude(),
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})
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}
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paths = append(paths, path)
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}
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}
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result.md = &gpx.MovingData{}
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for _, path := range paths {
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// Combine moving data
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result.md.MaxSpeed = math.Max(result.md.MaxSpeed, path.gpxMovingData.MaxSpeed)
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result.md.MovingDistance = result.md.MovingDistance + path.gpxMovingData.MovingDistance
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result.md.MovingTime = result.md.MovingTime + path.gpxMovingData.MovingTime
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result.md.StoppedDistance = result.md.StoppedDistance + path.gpxMovingData.StoppedDistance
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result.md.StoppedTime = result.md.StoppedTime + path.gpxMovingData.StoppedTime
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// Add points
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result.paths = append(result.paths, path.points)
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}
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return result, nil
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}
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