15 "github.com/octo/kraftakt/app"
17 oauth2fitbit "golang.org/x/oauth2/fitbit"
18 "google.golang.org/appengine/log"
21 func oauthConfig() *oauth2.Config {
22 return &oauth2.Config{
23 ClientID: app.Config.FitbitClientID,
24 ClientSecret: app.Config.FitbitClientSecret,
25 Endpoint: oauth2fitbit.Endpoint,
26 RedirectURL: "https://kraftakt.octo.it/fitbit/grant",
36 func ParseToken(ctx context.Context, r *http.Request, u *app.User) error {
37 if state := r.FormValue("state"); state != u.Sign("Fitbit") {
38 return fmt.Errorf("invalid state parameter: %q", state)
41 tok, err := oauthConfig().Exchange(ctx, r.FormValue("code"))
46 return u.SetToken(ctx, "Fitbit", tok)
49 func CheckSignature(ctx context.Context, payload []byte, rawSig string) bool {
50 signatureGot, err := base64.StdEncoding.DecodeString(rawSig)
52 log.Errorf(ctx, "base64.StdEncoding.DecodeString(%q) = %v", rawSig, err)
56 mac := hmac.New(sha1.New, []byte(oauthConfig().ClientSecret+"&"))
58 signatureWant := mac.Sum(nil)
60 return hmac.Equal(signatureGot, signatureWant)
63 type Activity struct {
64 ActivityID int `json:"activityId"`
65 ActivityParentID int `json:"activityParentId"`
66 ActivityParentName string `json:"activityParentName"`
67 Calories int `json:"calories"`
68 Description string `json:"description"`
69 Distance float64 `json:"distance"`
70 Duration int `json:"duration"`
71 HasStartTime bool `json:"hasStartTime"`
72 IsFavorite bool `json:"isFavorite"`
73 LastModified time.Time `json:"lastModified"`
74 LogID int `json:"logId"`
75 Name string `json:"name"`
76 StartTime string `json:"startTime"`
77 StartDate string `json:"startDate"`
78 Steps int `json:"steps"`
81 type Distance struct {
82 Activity string `json:"activity"`
83 Distance float64 `json:"distance"`
86 type HeartRateZone struct {
87 Name string `json:"name"`
90 Minutes int `json:"minutes"`
91 CaloriesOut float64 `json:"caloriesOut"`
94 type ActivitySummary struct {
95 Activities []Activity `json:"activities"`
97 CaloriesOut int `json:"caloriesOut"`
98 Distance float64 `json:"distance"`
99 Floors int `json:"floors"`
100 Steps int `json:"steps"`
103 ActiveScore int `json:"activeScore"`
104 ActivityCalories int `json:"activityCalories"`
105 CaloriesBMR int `json:"caloriesBMR"`
106 CaloriesOut float64 `json:"caloriesOut"`
107 Distances []Distance `json:"distances"`
108 Elevation float64 `json:"elevation"`
109 Floors int `json:"floors"`
110 HeartRateZones []HeartRateZone `json:"heartRateZones"`
111 CustomHeartRateZones []HeartRateZone `json:"customHeartRateZones"`
112 MarginalCalories int `json:"marginalCalories"`
113 RestingHeartRate int `json:"restingHeartRate"`
114 Steps int `json:"steps"`
115 SedentaryMinutes int `json:"sedentaryMinutes"`
116 LightlyActiveMinutes int `json:"lightlyActiveMinutes"`
117 FairlyActiveMinutes int `json:"fairlyActiveMinutes"`
118 VeryActiveMinutes int `json:"veryActiveMinutes"`
122 type Subscription struct {
123 CollectionType string `json:"collectionType"`
124 Date string `json:"date"`
125 OwnerID string `json:"ownerId"`
126 OwnerType string `json:"ownerType"`
127 SubscriptionID string `json:"subscriptionId"`
136 func NewClient(ctx context.Context, fitbitUserID string, u *app.User) (*Client, error) {
137 if fitbitUserID == "" {
141 c, err := u.OAuthClient(ctx, "Fitbit", oauthConfig())
147 fitbitUserID: fitbitUserID,
153 func (c *Client) AuthURL(ctx context.Context) string {
154 return oauthConfig().AuthCodeURL(c.appUser.Sign("Fitbit"), oauth2.AccessTypeOffline)
157 func (c *Client) ActivitySummary(ctx context.Context, date string) (*ActivitySummary, error) {
158 url := fmt.Sprintf("https://api.fitbit.com/1/user/%s/activities/date/%s.json",
159 c.fitbitUserID, date)
161 res, err := c.client.Get(url)
165 defer res.Body.Close()
167 data, _ := ioutil.ReadAll(res.Body)
168 log.Debugf(ctx, "GET %s -> %s", url, data)
170 var summary ActivitySummary
171 if err := json.Unmarshal(data, &summary); err != nil {
178 func (c *Client) subscriberID(collection string) string {
179 return fmt.Sprintf("%s:%s", c.appUser.ID, collection)
182 func UserFromSubscriberID(ctx context.Context, subscriberID string) (*app.User, error) {
183 uid := strings.Split(subscriberID, ":")[0]
184 return app.UserByID(ctx, uid)
187 func (c *Client) Subscribe(ctx context.Context, collection string) error {
188 url := fmt.Sprintf("https://api.fitbit.com/1/user/%s/%s/apiSubscriptions/%s.json",
189 c.fitbitUserID, collection, c.subscriberID(collection))
190 res, err := c.client.Post(url, "", nil)
194 defer res.Body.Close()
196 if res.StatusCode >= 400 && res.StatusCode != http.StatusConflict {
197 data, _ := ioutil.ReadAll(res.Body)
198 log.Errorf(ctx, "creating %q subscription failed: status %d %q", collection, res.StatusCode, data)
199 return fmt.Errorf("creating %q subscription failed", collection)
201 if res.StatusCode == http.StatusConflict {
202 log.Infof(ctx, "creating %q subscription: already exists", collection)
208 func (c *Client) Unsubscribe(ctx context.Context, collection string) error {
209 url := fmt.Sprintf("https://api.fitbit.com/1/user/%s/%s/apiSubscriptions/%s.json",
210 c.fitbitUserID, collection, c.subscriberID(collection))
211 req, err := http.NewRequest(http.MethodDelete, url, nil)
216 res, err := c.client.Do(req.WithContext(ctx))
220 defer res.Body.Close()
222 if res.StatusCode >= 400 && res.StatusCode != http.StatusNotFound {
223 data, _ := ioutil.ReadAll(res.Body)
224 log.Errorf(ctx, "deleting %q subscription failed: status %d %q", collection, res.StatusCode, data)
225 return fmt.Errorf("deleting %q subscription failed", collection)
227 if res.StatusCode == http.StatusNotFound {
228 log.Infof(ctx, "deleting %q subscription: not found", collection)
234 func (c *Client) DeleteToken(ctx context.Context) error {
235 return c.appUser.DeleteToken(ctx, "Fitbit")
238 type Profile struct {
240 Timezone *time.Location
243 func (c *Client) Profile(ctx context.Context) (*Profile, error) {
244 res, err := c.client.Get("https://api.fitbit.com/1/user/-/profile.json")
248 defer res.Body.Close()
250 if res.StatusCode >= 400 {
251 data, _ := ioutil.ReadAll(res.Body)
252 log.Errorf(ctx, "reading profile failed: %s", data)
253 return nil, fmt.Errorf("HTTP %d error", res.StatusCode)
259 OffsetFromUTCMillis int
263 if err := json.NewDecoder(res.Body).Decode(&data); err != nil {
267 loc, err := time.LoadLocation(data.User.Timezone)
269 loc = time.FixedZone("Fitbit preference", data.User.OffsetFromUTCMillis/1000)
273 Name: data.User.FullName,