package api

import (
	"context"
	"fmt"
	"time"
)

// SleepData represents a user's sleep information
type SleepData struct {
	Date          time.Time `json:"date"`
	Duration      float64   `json:"duration"` // in minutes
	Quality       float64   `json:"quality"`  // 0-100 scale
	SleepStages   struct {
		Deep  float64 `json:"deep"`
		Light float64 `json:"light"`
		REM   float64 `json:"rem"`
		Awake float64 `json:"awake"`
	} `json:"sleepStages"`
}

// HRVData represents Heart Rate Variability data
type HRVData struct {
	Date        time.Time `json:"date"`
	RestingHrv  float64   `json:"restingHrv"` // in milliseconds
	WeeklyAvg   float64   `json:"weeklyAvg"`
	LastNightAvg float64  `json:"lastNightAvg"`
}

// BodyBatteryData represents Garmin's Body Battery energy metric
type BodyBatteryData struct {
	Date        time.Time `json:"date"`
	Charged     int       `json:"charged"`     // 0-100 scale
	Drained     int       `json:"drained"`     // 0-100 scale
	Highest     int       `json:"highest"`     // highest value of the day
	Lowest      int       `json:"lowest"`      // lowest value of the day
}

// GetSleepData retrieves sleep data for a specific date
func (c *Client) GetSleepData(ctx context.Context, date time.Time) (*SleepData, error) {
	var data SleepData
	path := fmt.Sprintf("/wellness-service/sleep/daily/%s", date.Format("2006-01-02"))
	
	if err := c.Get(ctx, path, &data); err != nil {
		return nil, fmt.Errorf("failed to get sleep data: %w", err)
	}
	return &data, nil
}

// GetHRVData retrieves Heart Rate Variability data for a specific date
func (c *Client) GetHRVData(ctx context.Context, date time.Time) (*HRVData, error) {
	var data HRVData
	path := fmt.Sprintf("/hrv-service/hrv/%s", date.Format("2006-01-02"))
	
	if err := c.Get(ctx, path, &data); err != nil {
		return nil, fmt.Errorf("failed to get HRV data: %w", err)
	}
	return &data, nil
}

// GetBodyBatteryData retrieves Body Battery data for a specific date
func (c *Client) GetBodyBatteryData(ctx context.Context, date time.Time) (*BodyBatteryData, error) {
	var data BodyBatteryData
	path := fmt.Sprintf("/bodybattery-service/bodybattery/%s", date.Format("2006-01-02"))
	
	if err := c.Get(ctx, path, &data); err != nil {
		return nil, fmt.Errorf("failed to get Body Battery data: %w", err)
	}
	return &data, nil
}