package services

import (
	"encoding/json"
	"fmt"
	"go-weather/models"
	"net/http"
)

type WeatherService struct {
	apiKey string
}

func NewWeatherService(apiKey string) *WeatherService {
	return &WeatherService{apiKey: apiKey}
}

func (s *WeatherService) FetchWeather(city string) (models.WeatherResponse, error) {
	url := fmt.Sprintf(
		"https://api.openweathermap.org/data/2.5/weather?q=%s&appid=%s&units=imperial",
		city, s.apiKey,
	)
	resp, err := http.Get(url)

	if err != nil {
		return models.WeatherResponse{}, fmt.Errorf("request failed: %w", err)
	}
	defer resp.Body.Close()

	if resp.StatusCode != http.StatusOK {
		return models.WeatherResponse{}, fmt.Errorf("API returned status %d", resp.StatusCode)
	}

	var weather models.WeatherResponse
	err = json.NewDecoder(resp.Body).Decode(&weather)
	if err != nil {
		return models.WeatherResponse{}, fmt.Errorf("failed to parse response: %w", err)
	}
	return weather, nil
}