X-Git-Url: https://git.octo.it/?p=kraftakt.git;a=blobdiff_plain;f=gfit%2Fgfit.go;h=3e406b4d2824c6d3712ef7d21f2b210c11868b32;hp=028eee0cc8f8d5c844545e04410567aa3d97c671;hb=a05bb612a8b3c7b66fc6f841040c69b87350e63e;hpb=a1803b210e15430a724d10e7370fd0a0e3256f8b

diff --git a/gfit/gfit.go b/gfit/gfit.go
index 028eee0..3e406b4 100644
--- a/gfit/gfit.go
+++ b/gfit/gfit.go
@@ -4,36 +4,61 @@ import (
 	"context"
 	"fmt"
 	"net/http"
+	"strings"
+	"time"
 
-	"github.com/octo/gfitsync/app"
+	"github.com/octo/kraftakt/app"
+	"github.com/octo/kraftakt/fitbit"
 	"golang.org/x/oauth2"
 	oauth2google "golang.org/x/oauth2/google"
 	fitness "google.golang.org/api/fitness/v1"
+	"google.golang.org/api/googleapi"
+	"google.golang.org/appengine"
+	"google.golang.org/appengine/log"
 )
 
-var oauthConfig = &oauth2.Config{
-	ClientID:     "@GOOGLE_CLIENT_ID@",
-	ClientSecret: "@GOOGLE_CLIENT_SECRET@",
-	Endpoint:     oauth2google.Endpoint,
-	RedirectURL:  "https://fitbit-gfit-sync.appspot.com/google/grant",
-	Scopes: []string{
-		fitness.FitnessActivityWriteScope,
-		fitness.FitnessBodyWriteScope,
-	},
+const (
+	userID = "me"
+
+	dataTypeNameCalories        = "com.google.calories.expended"
+	dataTypeNameDistance        = "com.google.distance.delta"
+	dataTypeNameSteps           = "com.google.step_count.delta"
+	dataTypeNameHeartrate       = "com.google.heart_rate.summary"
+	dataTypeNameActivitySegment = "com.google.activity.segment"
+)
+
+func oauthConfig() *oauth2.Config {
+	return &oauth2.Config{
+		ClientID:     app.Config.GoogleClientID,
+		ClientSecret: app.Config.GoogleClientSecret,
+		Endpoint:     oauth2google.Endpoint,
+		RedirectURL:  "https://kraftakt.octo.it/google/grant",
+		Scopes: []string{
+			fitness.FitnessActivityWriteScope,
+			fitness.FitnessBodyWriteScope,
+			fitness.FitnessLocationWriteScope,
+		},
+	}
 }
 
-const csrfToken = "@CSRFTOKEN@"
+func AuthURL(ctx context.Context, u *app.User) string {
+	return oauthConfig().AuthCodeURL(u.Sign("Google"), oauth2.AccessTypeOffline)
+}
 
-func AuthURL() string {
-	return oauthConfig.AuthCodeURL(csrfToken, oauth2.AccessTypeOffline)
+func Application(ctx context.Context) *fitness.Application {
+	return &fitness.Application{
+		Name:       "Kraftakt",
+		Version:    appengine.VersionID(ctx),
+		DetailsUrl: "", // optional
+	}
 }
 
 func ParseToken(ctx context.Context, r *http.Request, u *app.User) error {
-	if state := r.FormValue("state"); state != csrfToken {
+	if state := r.FormValue("state"); state != u.Sign("Google") {
 		return fmt.Errorf("invalid state parameter: %q", state)
 	}
 
-	tok, err := oauthConfig.Exchange(ctx, r.FormValue("code"))
+	tok, err := oauthConfig().Exchange(ctx, r.FormValue("code"))
 	if err != nil {
 		return err
 	}
@@ -43,10 +68,11 @@ func ParseToken(ctx context.Context, r *http.Request, u *app.User) error {
 
 type Client struct {
 	*fitness.Service
+	appUser *app.User
 }
 
 func NewClient(ctx context.Context, u *app.User) (*Client, error) {
-	c, err := u.OAuthClient(ctx, "Google", oauthConfig)
+	c, err := u.OAuthClient(ctx, "Google", oauthConfig())
 	if err != nil {
 		return nil, err
 	}
@@ -58,5 +84,483 @@ func NewClient(ctx context.Context, u *app.User) (*Client, error) {
 
 	return &Client{
 		Service: service,
+		appUser: u,
 	}, nil
 }
+
+func (c *Client) DeleteToken(ctx context.Context) error {
+	return c.appUser.DeleteToken(ctx, "Google")
+}
+
+func DataStreamID(dataSource *fitness.DataSource) string {
+	fields := []string{
+		dataSource.Type,
+		dataSource.DataType.Name,
+		app.Config.ProjectNumber,
+	}
+
+	if dev := dataSource.Device; dev != nil {
+		if dev.Manufacturer != "" {
+			fields = append(fields, dev.Manufacturer)
+		}
+		if dev.Model != "" {
+			fields = append(fields, dev.Model)
+		}
+		if dev.Uid != "" {
+			fields = append(fields, dev.Uid)
+		}
+	}
+
+	if dataSource.DataStreamName != "" {
+		fields = append(fields, dataSource.DataStreamName)
+	}
+
+	return strings.Join(fields, ":")
+}
+
+func (c *Client) DataSourceCreate(ctx context.Context, dataSource *fitness.DataSource) (string, error) {
+	res, err := c.Service.Users.DataSources.Create(userID, dataSource).Context(ctx).Do()
+	if err != nil {
+		if gerr, ok := err.(*googleapi.Error); ok && gerr.Code == http.StatusConflict {
+			if dataSource.DataStreamId != "" {
+				return dataSource.DataStreamId, nil
+			}
+			return DataStreamID(dataSource), nil
+		}
+		return "", fmt.Errorf("DataSources.Create(%q) = %v", DataStreamID(dataSource), err)
+	}
+
+	return res.DataStreamId, nil
+}
+
+func (c *Client) DatasetGet(ctx context.Context, dataSourceID string, startTime, endTime time.Time) (*fitness.Dataset, error) {
+	datasetID := fmt.Sprintf("%d-%d", startTime.UnixNano(), endTime.UnixNano())
+
+	res, err := c.Service.Users.DataSources.Datasets.Get(userID, dataSourceID, datasetID).Context(ctx).Do()
+	if err != nil {
+		return nil, fmt.Errorf("DataSources.Datasets.Get(%q, %q) = %v", dataSourceID, datasetID, err)
+	}
+	return res, nil
+}
+
+func (c *Client) DatasetPatch(ctx context.Context, dataSourceID string, points []*fitness.DataPoint) error {
+	startTimeNanos, endTimeNanos := int64(-1), int64(-1)
+	for _, p := range points {
+		if startTimeNanos == -1 || startTimeNanos > p.StartTimeNanos {
+			startTimeNanos = p.StartTimeNanos
+		}
+		if endTimeNanos == -1 || endTimeNanos < p.EndTimeNanos {
+			endTimeNanos = p.EndTimeNanos
+		}
+	}
+	datasetID := fmt.Sprintf("%d-%d", startTimeNanos, endTimeNanos)
+
+	dataset := &fitness.Dataset{
+		DataSourceId:   dataSourceID,
+		MinStartTimeNs: startTimeNanos,
+		MaxEndTimeNs:   endTimeNanos,
+		Point:          points,
+	}
+
+	_, err := c.Service.Users.DataSources.Datasets.Patch(userID, dataSourceID, datasetID, dataset).Context(ctx).Do()
+	if err != nil {
+		log.Errorf(ctx, "DataSources.Datasets.Patch(%q, %q) = %v", dataSourceID, datasetID, err)
+		return err
+	}
+	return nil
+}
+
+func (c *Client) SetDistance(ctx context.Context, meters float64, startOfDay time.Time) error {
+	return c.updateIncremental(ctx,
+		&fitness.DataSource{
+			Application: Application(ctx),
+			DataType: &fitness.DataType{
+				Field: []*fitness.DataTypeField{
+					&fitness.DataTypeField{
+						Name:   "distance",
+						Format: "floatPoint",
+					},
+				},
+				Name: dataTypeNameDistance,
+			},
+			Name: "Distance covered",
+			Type: "raw",
+		},
+		&fitness.Value{
+			FpVal: meters,
+		},
+		startOfDay)
+}
+
+func (c *Client) SetSteps(ctx context.Context, totalSteps int, startOfDay time.Time) error {
+	return c.updateIncremental(ctx,
+		&fitness.DataSource{
+			Application: Application(ctx),
+			DataType: &fitness.DataType{
+				Field: []*fitness.DataTypeField{
+					&fitness.DataTypeField{
+						Name:   "steps",
+						Format: "integer",
+					},
+				},
+				Name: dataTypeNameSteps,
+			},
+			Name: "Step Count",
+			Type: "raw",
+		},
+		&fitness.Value{
+			IntVal: int64(totalSteps),
+		},
+		startOfDay)
+}
+
+func (c *Client) SetCalories(ctx context.Context, totalCalories float64, startOfDay time.Time) error {
+	return c.updateIncremental(ctx,
+		&fitness.DataSource{
+			Application: Application(ctx),
+			DataType: &fitness.DataType{
+				Field: []*fitness.DataTypeField{
+					&fitness.DataTypeField{
+						Name:   "calories",
+						Format: "floatPoint",
+					},
+				},
+				Name: dataTypeNameCalories,
+			},
+			Name: "Calories expended",
+			Type: "raw",
+		},
+		&fitness.Value{
+			FpVal: totalCalories,
+		},
+		startOfDay)
+}
+
+type Activity struct {
+	Start time.Time
+	End   time.Time
+	Type  string
+}
+
+func (a Activity) String() string {
+	return fmt.Sprintf("%s-%s %q", a.Start.Format("15:04:05"), a.End.Format("15:04:05"), a.Type)
+}
+
+func (c *Client) SetActivities(ctx context.Context, activities []Activity, startOfDay time.Time) error {
+	if len(activities) == 0 {
+		log.Debugf(ctx, "SetActivities(): len(activities) == 0")
+		return nil
+	}
+
+	dataStreamID, err := c.DataSourceCreate(ctx, &fitness.DataSource{
+		Application: Application(ctx),
+		DataType: &fitness.DataType{
+			Field: []*fitness.DataTypeField{
+				&fitness.DataTypeField{
+					Name:   "activity",
+					Format: "integer",
+				},
+			},
+			Name: dataTypeNameActivitySegment,
+		},
+		Type: "raw",
+	})
+	if err != nil {
+		return err
+	}
+
+	endOfDay := startOfDay.Add(24 * time.Hour).Add(-1 * time.Nanosecond)
+
+	dataset, err := c.DatasetGet(ctx, dataStreamID, startOfDay, endOfDay)
+	if err != nil {
+		return err
+	}
+
+	var dataPoints []*fitness.DataPoint
+Next:
+	for _, a := range activities {
+		startTimeNanos := a.Start.UnixNano()
+		endTimeNanos := a.End.UnixNano()
+		activityType := ParseFitbitActivity(a.Type)
+
+		for _, p := range dataset.Point {
+			if p.StartTimeNanos == startTimeNanos && p.EndTimeNanos == endTimeNanos && p.Value[0].IntVal == activityType {
+				log.Debugf(ctx, "activity %s already stored in Google Fit", a)
+				continue Next
+			}
+		}
+
+		log.Debugf(ctx, "activity %s will be added to Google Fit", a)
+		dataPoints = append(dataPoints, &fitness.DataPoint{
+			DataTypeName:   dataTypeNameActivitySegment,
+			StartTimeNanos: startTimeNanos,
+			EndTimeNanos:   endTimeNanos,
+			Value: []*fitness.Value{
+				&fitness.Value{IntVal: activityType},
+			},
+		})
+	}
+
+	if len(dataPoints) == 0 {
+		log.Debugf(ctx, "SetActivities(): len(dataPoints) == 0")
+		return nil
+	}
+
+	log.Debugf(ctx, "SetActivities(): calling c.DatasetPatch(%q)", dataStreamID)
+	return c.DatasetPatch(ctx, dataStreamID, dataPoints)
+}
+
+func (c *Client) updateIncremental(ctx context.Context, dataSource *fitness.DataSource, rawValue *fitness.Value, startOfDay time.Time) error {
+	switch f := dataSource.DataType.Field[0].Format; f {
+	case "integer":
+		if rawValue.IntVal == 0 {
+			return nil
+		}
+	case "floatPoint":
+		if rawValue.FpVal == 0 {
+			return nil
+		}
+	default:
+		return fmt.Errorf("unexpected data type field format %q", f)
+	}
+
+	dataSourceID, err := c.DataSourceCreate(ctx, dataSource)
+	if err != nil {
+		return err
+	}
+	dataSource.DataStreamId = dataSourceID
+
+	endOfDay := startOfDay.Add(24 * time.Hour).Add(-1 * time.Nanosecond)
+	storedValue, startTime, err := c.readIncremental(ctx, dataSource, startOfDay, endOfDay)
+	if err != nil {
+		return err
+	}
+
+	var diffValue fitness.Value
+	if dataSource.DataType.Field[0].Format == "integer" {
+		if storedValue.IntVal > rawValue.IntVal {
+			log.Warningf(ctx, "stored value (%d) is larger than new value (%d)", storedValue.IntVal, rawValue.IntVal)
+			return nil
+		}
+		if rawValue.IntVal == storedValue.IntVal {
+			return nil
+		}
+		diffValue.IntVal = rawValue.IntVal - storedValue.IntVal
+	} else { // if dataSource.DataType.Field[0].Format == "floatPoint"
+		if storedValue.FpVal > rawValue.FpVal {
+			log.Warningf(ctx, "stored value (%g) is larger than new value (%g)", storedValue.FpVal, rawValue.FpVal)
+			return nil
+		}
+		if rawValue.FpVal == storedValue.FpVal {
+			return nil
+		}
+		diffValue.FpVal = rawValue.FpVal - storedValue.FpVal
+	}
+
+	endTime := endOfDay
+	if now := time.Now().In(startOfDay.Location()); now.Before(endOfDay) {
+		endTime = now
+	}
+	log.Debugf(ctx, "add  cumulative data %s until %v: %+v", dataSource.DataStreamId, endTime, diffValue)
+
+	return c.DatasetPatch(ctx, dataSource.DataStreamId, []*fitness.DataPoint{
+		&fitness.DataPoint{
+			DataTypeName:   dataSource.DataType.Name,
+			StartTimeNanos: startTime.UnixNano(),
+			EndTimeNanos:   endTime.UnixNano(),
+			Value:          []*fitness.Value{&diffValue},
+		},
+	})
+}
+
+func (c *Client) readIncremental(ctx context.Context, dataSource *fitness.DataSource, startTime, endTime time.Time) (*fitness.Value, time.Time, error) {
+	dataset, err := c.DatasetGet(ctx, dataSource.DataStreamId, startTime, endTime)
+	if err != nil {
+		return nil, time.Time{}, err
+	}
+
+	if len(dataset.Point) == 0 {
+		log.Debugf(ctx, "read cumulative data %s until %v: []", dataSource.DataStreamId, endTime)
+		return &fitness.Value{}, startTime, nil
+	}
+
+	var sum fitness.Value
+	maxEndTime := startTime
+	for _, p := range dataset.Point {
+		switch f := dataSource.DataType.Field[0].Format; f {
+		case "integer":
+			sum.IntVal += p.Value[0].IntVal
+		case "floatPoint":
+			sum.FpVal += p.Value[0].FpVal
+		default:
+			return nil, time.Time{}, fmt.Errorf("unexpected data type field format %q", f)
+		}
+
+		pointEndTime := time.Unix(0, p.EndTimeNanos).In(startTime.Location())
+		if maxEndTime.Before(pointEndTime) {
+			maxEndTime = pointEndTime
+		}
+	}
+
+	log.Debugf(ctx, "read cumulative data %s until %v: %+v", dataSource.DataStreamId, maxEndTime, sum)
+	return &sum, maxEndTime, nil
+}
+
+type heartRateDuration struct {
+	Min      int
+	Max      int
+	Duration time.Duration
+}
+
+type heartRateDurations []*heartRateDuration
+
+func (res heartRateDurations) find(min, max int) (*heartRateDuration, bool) {
+	for _, d := range res {
+		if d.Min != min || d.Max != max {
+			continue
+		}
+		return d, true
+	}
+
+	return nil, false
+}
+
+func (c *Client) heartRate(ctx context.Context, dataSource *fitness.DataSource, startTime, endTime time.Time) (heartRateDurations, time.Time, error) {
+	dataset, err := c.DatasetGet(ctx, dataSource.DataStreamId, startTime, endTime)
+	if err != nil {
+		return nil, time.Time{}, err
+	}
+
+	if len(dataset.Point) == 0 {
+		return nil, startTime, nil
+	}
+
+	var results heartRateDurations
+	maxEndTime := startTime
+	for _, p := range dataset.Point {
+		max := int(p.Value[1].FpVal)
+		min := int(p.Value[2].FpVal)
+		duration := time.Unix(0, p.EndTimeNanos).Sub(time.Unix(0, p.StartTimeNanos))
+
+		if d, ok := results.find(min, max); ok {
+			d.Duration += duration
+		} else {
+			results = append(results, &heartRateDuration{
+				Min:      min,
+				Max:      max,
+				Duration: duration,
+			})
+		}
+
+		pointEndTime := time.Unix(0, p.EndTimeNanos).In(startTime.Location())
+		if maxEndTime.Before(pointEndTime) {
+			maxEndTime = pointEndTime
+		}
+	}
+
+	return results, maxEndTime, nil
+}
+
+func (c *Client) SetHeartRate(ctx context.Context, totalDurations []fitbit.HeartRateZone, restingHeartRate int, startOfDay time.Time) error {
+	dataSource := &fitness.DataSource{
+		Application: Application(ctx),
+		DataType: &fitness.DataType{
+			Field: []*fitness.DataTypeField{
+				&fitness.DataTypeField{
+					Name:   "average",
+					Format: "floatPoint",
+				},
+				&fitness.DataTypeField{
+					Name:   "max",
+					Format: "floatPoint",
+				},
+				&fitness.DataTypeField{
+					Name:   "min",
+					Format: "floatPoint",
+				},
+			},
+			Name: dataTypeNameHeartrate,
+		},
+		Name: "Heart rate summary",
+		Type: "raw",
+	}
+
+	dataSourceID, err := c.DataSourceCreate(ctx, dataSource)
+	if err != nil {
+		return err
+	}
+	dataSource.DataStreamId = dataSourceID
+
+	endOfDay := startOfDay.Add(24 * time.Hour).Add(-1 * time.Nanosecond)
+	prevDurations, startTime, err := c.heartRate(ctx, dataSource, startOfDay, endOfDay)
+
+	// calculate the difference between the durations mentioned in
+	// totalDurations and prevDurations and store it in diffDurations.
+	var diffDurations heartRateDurations
+	for _, d := range totalDurations {
+		total := time.Duration(d.Minutes) * time.Minute
+
+		var prev time.Duration
+		if res, ok := prevDurations.find(d.Min, d.Max); ok {
+			prev = res.Duration
+		}
+
+		diff := total - prev
+		if diff < 0 {
+			diff = total
+		}
+
+		if res, ok := diffDurations.find(d.Min, d.Max); ok {
+			res.Duration += diff
+		} else {
+			diffDurations = append(diffDurations, &heartRateDuration{
+				Min:      d.Min,
+				Max:      d.Max,
+				Duration: diff,
+			})
+		}
+	}
+
+	// create a fitness.DataPoint for each non-zero duration difference.
+	var dataPoints []*fitness.DataPoint
+	for _, d := range diffDurations {
+		if d.Duration < time.Nanosecond {
+			continue
+		}
+
+		endTime := startTime.Add(d.Duration)
+		if endTime.After(endOfDay) {
+			log.Warningf(ctx, "heart rate durations exceed one day (current end time: %v)", endTime)
+			break
+		}
+
+		average := float64(d.Min+d.Max) / 2.0
+		if d.Min <= restingHeartRate && restingHeartRate <= d.Max {
+			average = float64(restingHeartRate)
+		}
+
+		dataPoints = append(dataPoints, &fitness.DataPoint{
+			DataTypeName:   dataSource.DataType.Name,
+			StartTimeNanos: startTime.UnixNano(),
+			EndTimeNanos:   endTime.UnixNano(),
+			Value: []*fitness.Value{
+				&fitness.Value{
+					FpVal: average,
+				},
+				&fitness.Value{
+					FpVal: float64(d.Max),
+				},
+				&fitness.Value{
+					FpVal: float64(d.Min),
+				},
+			},
+		})
+
+		startTime = endTime
+	}
+
+	if len(dataPoints) == 0 {
+		return nil
+	}
+	return c.DatasetPatch(ctx, dataSource.DataStreamId, dataPoints)
+}