partital fix - checkpoint 2

internal/api/steps.go

@@ -0,0 +1,25 @@
+package api
+
+import (
+	"time"
+
+	"github.com/go-playground/validator/v10"
+)
+
+// DailySteps represents daily step count data from Garmin Connect
+type DailySteps struct {
+	CalendarDate     time.Time `json:"calendarDate" validate:"required"`
+	TotalSteps       int       `json:"totalSteps" validate:"min=0"`
+	Goal             int       `json:"goal" validate:"min=0"`
+	ActiveMinutes    int       `json:"activeMinutes" validate:"min=0"`
+	DistanceMeters   float64   `json:"distanceMeters" validate:"min=0"`
+	CaloriesBurned   int       `json:"caloriesBurned" validate:"min=0"`
+	StepsToGoal      int       `json:"stepsToGoal"`
+	StepGoalAchieved bool      `json:"stepGoalAchieved"`
+}
+
+// Validate ensures DailySteps fields meet requirements
+func (s *DailySteps) Validate() error {
+	validate := validator.New()
+	return validate.Struct(s)
+}