partital fix - checkpoint 2

internal/api/stress.go

@@ -0,0 +1,24 @@
+package api
+
+import (
+	"time"
+
+	"github.com/go-playground/validator/v10"
+)
+
+// DailyStress represents daily stress data from Garmin Connect
+type DailyStress struct {
+	CalendarDate         time.Time `json:"calendarDate" validate:"required"`
+	OverallStressLevel   int       `json:"overallStressLevel" validate:"min=0,max=100"`
+	RestStressDuration   int       `json:"restStressDuration" validate:"min=0"`
+	LowStressDuration    int       `json:"lowStressDuration" validate:"min=0"`
+	MediumStressDuration int       `json:"mediumStressDuration" validate:"min=0"`
+	HighStressDuration   int       `json:"highStressDuration" validate:"min=0"`
+	StressQualifier      string    `json:"stressQualifier"`
+}
+
+// Validate ensures DailyStress fields meet requirements
+func (s *DailyStress) Validate() error {
+	validate := validator.New()
+	return validate.Struct(s)
+}