Add geo pkg

pkg/geo/geo.go

@@ -0,0 +1,34 @@
+package geo
+
+import (
+	"fmt"
+	"strconv"
+	"strings"
+)
+
+type Coordinates struct {
+	Latitude  float64
+	Longitude float64
+}
+
+func ParseCoordinates(s string) (*Coordinates, error) {
+	parts := strings.Split(s, ",")
+	if len(parts) != 2 {
+		return nil, fmt.Errorf("invalid string: %s", s)
+	}
+
+	var (
+		c   = &Coordinates{}
+		err error
+	)
+	c.Latitude, err = strconv.ParseFloat(parts[0], 64)
+	if err != nil {
+		return nil, fmt.Errorf("failed to parse latitude: %v", err)
+	}
+	c.Longitude, err = strconv.ParseFloat(parts[1], 64)
+	if err != nil {
+		return nil, fmt.Errorf("failed to parse longitude: %v", err)
+	}
+
+	return c, nil
+}