From e14c29f1617dc49f7739d9eb858b55f952f1ac2c Mon Sep 17 00:00:00 2001
From: zhlv <vllldm@inbox.ru>
Date: Mon, 26 May 2025 07:15:10 +0300
Subject: [PATCH] first

---
 internal/daysteps/daysteps.go           | 49 +++++++++++--
 internal/spentcalories/spentcalories.go | 94 +++++++++++++++++++++----
 2 files changed, 123 insertions(+), 20 deletions(-)

diff --git a/internal/daysteps/daysteps.go b/internal/daysteps/daysteps.go
index 92001d6..3fb08ad 100644
--- a/internal/daysteps/daysteps.go
+++ b/internal/daysteps/daysteps.go
@@ -1,20 +1,59 @@
 package daysteps
 
 import (
+	"fmt"
+	"log"
+	"strconv"
+	"strings"
 	"time"
+
+	"github.com/Yandex-Practicum/tracker/internal/spentcalories"
 )
 
 const (
-	// Длина одного шага в метрах
 	stepLength = 0.65
-	// Количество метров в одном километре
-	mInKm = 1000
+	mInKm      = 1000
 )
 
 func parsePackage(data string) (int, time.Duration, error) {
-	// TODO: реализовать функцию
+	parts := strings.Split(data, ",")
+	if len(parts) != 2 {
+		return 0, 0, fmt.Errorf("invalid input format")
+	}
+
+	steps, err := strconv.Atoi(parts[0])
+	if err != nil || steps <= 0 {
+		return 0, 0, fmt.Errorf("invalid steps: %v", err)
+	}
+
+	duration, err := time.ParseDuration(parts[1])
+	if err != nil {
+		return 0, 0, fmt.Errorf("invalid duration: %v", err)
+	}
+
+	if duration <= 0 {
+		return 0, 0, fmt.Errorf("invalid duration")
+	}
+
+	return steps, duration, nil
 }
 
 func DayActionInfo(data string, weight, height float64) string {
-	// TODO: реализовать функцию
+	steps, duration, err := parsePackage(data)
+	if err != nil || steps <= 0 {
+		log.Println("ошибка:", err.Error())
+		return ""
+	}
+
+	distance := float64(steps) * stepLength
+	distanceKm := distance / mInKm
+
+	calories, err := spentcalories.WalkingSpentCalories(steps, weight, height, duration)
+	if err != nil {
+		log.Println("ошибка:", err.Error())
+		return ""
+	}
+
+	return fmt.Sprintf("Количество шагов: %d.\nДистанция составила %.2f км.\nВы сожгли %.2f ккал.\n",
+		steps, distanceKm, calories)
 }
diff --git a/internal/spentcalories/spentcalories.go b/internal/spentcalories/spentcalories.go
index f17d134..6f60b12 100644
--- a/internal/spentcalories/spentcalories.go
+++ b/internal/spentcalories/spentcalories.go
@@ -1,38 +1,102 @@
 package spentcalories
 
 import (
+	"fmt"
+	"strconv"
+	"strings"
 	"time"
 )
 
-// Основные константы, необходимые для расчетов.
 const (
-	lenStep                    = 0.65 // средняя длина шага.
-	mInKm                      = 1000 // количество метров в километре.
-	minInH                     = 60   // количество минут в часе.
-	stepLengthCoefficient      = 0.45 // коэффициент для расчета длины шага на основе роста.
-	walkingCaloriesCoefficient = 0.5  // коэффициент для расчета калорий при ходьбе
+	lenStep                    = 0.65
+	mInKm                      = 1000
+	minInH                     = 60
+	stepLengthCoefficient      = 0.45
+	walkingCaloriesCoefficient = 0.5
 )
 
 func parseTraining(data string) (int, string, time.Duration, error) {
-	// TODO: реализовать функцию
+	parts := strings.Split(data, ",")
+	if len(parts) != 3 {
+		return 0, "", 0, fmt.Errorf("invalid input format")
+	}
+
+	steps, err := strconv.Atoi(parts[0])
+	if err != nil {
+		return 0, "", 0, fmt.Errorf("invalid step count: %v", err)
+	}
+
+	duration, err := time.ParseDuration(parts[2])
+	if err != nil {
+		return 0, "", 0, fmt.Errorf("invalid duration: %v", err)
+	}
+
+	if steps <= 0 {
+		return 0, "", 0, fmt.Errorf("invalid steps: %d", steps)
+	}
+	if duration <= 0 {
+		return 0, "", 0, fmt.Errorf("invalid duration: %s", parts[2])
+	}
+
+	return steps, parts[1], duration, nil
 }
 
 func distance(steps int, height float64) float64 {
-	// TODO: реализовать функцию
+	stepLen := height * stepLengthCoefficient
+	return float64(steps) * stepLen / mInKm
 }
 
 func meanSpeed(steps int, height float64, duration time.Duration) float64 {
-	// TODO: реализовать функцию
-}
-
-func TrainingInfo(data string, weight, height float64) (string, error) {
-	// TODO: реализовать функцию
+	if duration <= 0 {
+		return 0
+	}
+	dist := distance(steps, height)
+	hours := duration.Hours()
+	return dist / hours
 }
 
 func RunningSpentCalories(steps int, weight, height float64, duration time.Duration) (float64, error) {
-	// TODO: реализовать функцию
+	if steps <= 0 || weight <= 0 || height <= 0 || duration <= 0 {
+		return 0, fmt.Errorf("invalid input values")
+	}
+	speed := meanSpeed(steps, height, duration)
+	minutes := duration.Minutes()
+	return (weight * speed * minutes) / minInH, nil
 }
 
 func WalkingSpentCalories(steps int, weight, height float64, duration time.Duration) (float64, error) {
-	// TODO: реализовать функцию
+	if steps <= 0 || weight <= 0 || height <= 0 || duration <= 0 {
+		return 0, fmt.Errorf("invalid input values")
+	}
+	speed := meanSpeed(steps, height, duration)
+	minutes := duration.Minutes()
+	cals := (weight * speed * minutes) / minInH
+	return cals * walkingCaloriesCoefficient, nil
+}
+
+func TrainingInfo(data string, weight, height float64) (string, error) {
+	steps, activity, duration, err := parseTraining(data)
+	if err != nil {
+		return "", err
+	}
+
+	dist := distance(steps, height)
+	speed := meanSpeed(steps, height, duration)
+	var calories float64
+
+	switch activity {
+	case "Бег":
+		calories, err = RunningSpentCalories(steps, weight, height, duration)
+	case "Ходьба":
+		calories, err = WalkingSpentCalories(steps, weight, height, duration)
+	default:
+		return "", fmt.Errorf("неизвестный тип тренировки")
+	}
+
+	if err != nil {
+		return "", err
+	}
+
+	return fmt.Sprintf("Тип тренировки: %s\nДлительность: %.2f ч.\nДистанция: %.2f км.\nСкорость: %.2f км/ч\nСожгли калорий: %.2f\n",
+		activity, duration.Hours(), dist, speed, calories), nil
 }