partital fix - checkpoint 2

internal/api/sleep.go

@@ -0,0 +1,32 @@
+package api
+
+import (
+	"time"
+
+	"github.com/go-playground/validator/v10"
+)
+
+// SleepData represents sleep metrics from Garmin Connect
+type SleepData struct {
+	CalendarDate      time.Time `json:"calendarDate" validate:"required"`
+	SleepTimeSeconds  int       `json:"sleepTimeSeconds" validate:"min=0"`
+	DeepSleepSeconds  int       `json:"deepSleepSeconds" validate:"min=0"`
+	LightSleepSeconds int       `json:"lightSleepSeconds" validate:"min=0"`
+	RemSleepSeconds   int       `json:"remSleepSeconds" validate:"min=0"`
+	AwakeSeconds      int       `json:"awakeSeconds" validate:"min=0"`
+	SleepScore        int       `json:"sleepScore" validate:"min=0,max=100"`
+	SleepScores       struct {
+		Overall  int `json:"overall"`
+		Duration int `json:"duration"`
+		Deep     int `json:"deep"`
+		Rem      int `json:"rem"`
+		Light    int `json:"light"`
+		Awake    int `json:"awake"`
+	} `json:"sleepScores"`
+}
+
+// Validate ensures SleepData fields meet requirements
+func (s *SleepData) Validate() error {
+	validate := validator.New()
+	return validate.Struct(s)
+}