Added arn to the main repository

arn/Analytics.go

@@ -0,0 +1,78 @@
+package arn
+
+import "github.com/aerogo/nano"
+
+// Analytics stores user-related statistics.
+type Analytics struct {
+	UserID     string              `json:"userId"`
+	General    GeneralAnalytics    `json:"general"`
+	Screen     ScreenAnalytics     `json:"screen"`
+	System     SystemAnalytics     `json:"system"`
+	Connection ConnectionAnalytics `json:"connection"`
+}
+
+// GeneralAnalytics stores general information.
+type GeneralAnalytics struct {
+	TimezoneOffset int `json:"timezoneOffset"`
+}
+
+// ScreenAnalytics stores information about the device screen.
+type ScreenAnalytics struct {
+	Width           int     `json:"width"`
+	Height          int     `json:"height"`
+	AvailableWidth  int     `json:"availableWidth"`
+	AvailableHeight int     `json:"availableHeight"`
+	PixelRatio      float64 `json:"pixelRatio"`
+}
+
+// SystemAnalytics stores information about the CPU and OS.
+type SystemAnalytics struct {
+	CPUCount int    `json:"cpuCount"`
+	Platform string `json:"platform"`
+}
+
+// ConnectionAnalytics stores information about connection speed and ping.
+type ConnectionAnalytics struct {
+	DownLink      float64 `json:"downLink"`
+	RoundTripTime float64 `json:"roundTripTime"`
+	EffectiveType string  `json:"effectiveType"`
+}
+
+// GetAnalytics returns the analytics for the given user ID.
+func GetAnalytics(userID UserID) (*Analytics, error) {
+	obj, err := DB.Get("Analytics", userID)
+
+	if err != nil {
+		return nil, err
+	}
+
+	return obj.(*Analytics), nil
+}
+
+// StreamAnalytics returns a stream of all analytics.
+func StreamAnalytics() <-chan *Analytics {
+	channel := make(chan *Analytics, nano.ChannelBufferSize)
+
+	go func() {
+		for obj := range DB.All("Analytics") {
+			channel <- obj.(*Analytics)
+		}
+
+		close(channel)
+	}()
+
+	return channel
+}
+
+// AllAnalytics returns a slice of all analytics.
+func AllAnalytics() []*Analytics {
+	all := make([]*Analytics, 0, DB.Collection("Analytics").Count())
+
+	stream := StreamAnalytics()
+
+	for obj := range stream {
+		all = append(all, obj)
+	}
+
+	return all
+}