import axios from 'axios';
export interface WeatherForecastParams {
city: string;
country: string;
startDate: string;
endDate: string;
}
export interface WeatherForecastResult {
city: string;
country: string;
forecast: DayForecast[];
}
export interface DayForecast {
date: string;
temperature: {
min: number;
max: number;
unit: string;
};
description: string;
humidity: number;
windSpeed: number;
precipitationChance: number;
}
export class WeatherService {
private apiKey: string;
constructor() {
this.apiKey = process.env.WEATHER_API_KEY || '';
}
async getWeatherForecast(params: WeatherForecastParams): Promise<WeatherForecastResult> {
try {
// Example using OpenWeatherMap API
const response = await axios.get('https://api.openweathermap.org/data/2.5/forecast', {
params: {
q: `${params.city},${params.country}`,
appid: this.apiKey,
units: 'metric'
}
});
// Process the forecast data for the requested date range
const forecast = this.processForecastData(response.data, params.startDate, params.endDate);
return {
city: params.city,
country: params.country,
forecast: forecast
};
} catch (error) {
console.error('Weather API error:', error);
return this.getMockWeatherData(params);
}
}
private processForecastData(data: any, startDate: string, endDate: string): DayForecast[] {
// Process actual weather API data
// This is a simplified example
return data.list.map((item: any) => ({
date: item.dt_txt.split(' ')[0],
temperature: {
min: Math.round(item.main.temp_min),
max: Math.round(item.main.temp_max),
unit: 'C'
},
description: item.weather[0].description,
humidity: item.main.humidity,
windSpeed: item.wind.speed,
precipitationChance: item.pop * 100
}));
}
private getMockWeatherData(params: WeatherForecastParams): WeatherForecastResult {
return {
city: params.city,
country: params.country,
forecast: [
{
date: params.startDate,
temperature: { min: 15, max: 22, unit: 'C' },
description: 'Partly cloudy',
humidity: 65,
windSpeed: 12,
precipitationChance: 20
}
]
};
}
}
