First complete backend

sidewalk/sidewalk.go

@@ -0,0 +1,23 @@
+package sidewalk
+
+import "time"
+
+type Condition int
+
+const (
+	Unknown Condition = iota
+	Clear
+	PartiallyCovered
+	Covered
+)
+
+type Location []float64
+
+type Sidewalk struct {
+	OSMID       int               // The sidewalk's identifier in OSM
+	Geometry    []Location        // List of lat/lon pairs
+	Tags        map[string]string // OSM tags on the sidewalk
+	Description string            // A human-readable description of the chunk of sidewalk
+	Condition   Condition
+	LastUpdated time.Time
+}