AsteroidsController.apxc

public class AsteroidsController {    
    //Aura enabled needs to be static
    @AuraEnabled
    public static List<AsteroidWrapper> getAsteroids(String fromDate, String toDate) {
        DateTime startDate;
        DateTime endDate;
        List<AsteroidWrapper> asteroidList = new List<AsteroidWrapper>();
        System.debug('***fromDate is: ' + fromDate);
        System.debug('***toDate is: ' + toDate);
        
        if(String.isBlank(fromDate)  && String.isBlank(toDate))
        {
            //Yesterday
        	startDate = Date.today();
        	//Yesterday + 7 days
        	endDate = startDate.addDays(3);            
        }
        else
        {
            //Locale datetime format issue- so format incoming date consistently as yyyy-MM-dd
            List<String> dateParts = fromDate.split('-');
            startDate =  DateTime.newInstance(Integer.valueOf(dateParts[0]),Integer.valueOf(dateParts[1]),Integer.valueOf(dateParts[2]));
            
            dateParts = toDate.split('-');
            endDate =  DateTime.newInstance(Integer.valueOf(dateParts[0]),Integer.valueOf(dateParts[1]),Integer.valueOf(dateParts[2]));
            
        } 
        
        System.debug('***startDate is: ' + startDate);
        System.debug('***endDate is: ' + endDate);
        
        String endpoint = 'https://api.nasa.gov/neo/rest/v1/feed?start_date='+startDate.format('yyyy-MM-dd')+'&end_date='+endDate.format('yyyy-MM-dd')+'&api_key=REPLACE_WITH_YOUR_KEY';
        
        System.debug('***endpoint is: ' + endpoint);
        HttpRequest req = new HttpRequest();
        //req.setEndpoint('https://api.nasa.gov/neo/rest/v1/feed?start_date=2016-06-06&end_date=2016-06-13&api_key=REPLACE_WITH_YOUR_KEY');
        req.setEndpoint(endpoint);
        req.setMethod('GET');
        
        Http http = new Http();
        HttpResponse response = http.send(req);
        
        String resJSON = response.getBody();
        //System.debug('resJSON is: ' + resJSON);
        
        //Parse the JSON response from NASA - YAY!!!
        JSONParser parser = JSON.createParser(response.getBody());
        while (parser.nextToken() != null) { 
            if (parser.getCurrentToken() == JSONToken.START_ARRAY) {       
                while (parser.nextToken() != null) {
                    if (parser.getCurrentToken() == JSONToken.START_OBJECT) {                    
                        
                        
                        AsteroidData ad = (AsteroidData)parser.readValueAs(AsteroidData.class);
                        System.debug('AsteroidData :' + ad);
                        
                        
                        //Add to the list
                        if(ad.name != null)
                        {
                            AsteroidWrapper astro = new AsteroidWrapper();   
                            astro.str_Asteroid_Name = ad.Name;
                            astro.str_Magnitude = ad.absolute_magnitude_h;
                            astro.str_Estimated_Diameter_Max_Kms = ad.estimated_diameter.kilometers.estimated_diameter_max;       
                            astro.isAsteroidDangerous = (!ad.is_potentially_hazardous_asteroid)? 'No':'Yes';                      
                            
                            astro.str_closest_Approach_Earth_Date = ad.close_approach_data[0].close_approach_date;
                            astro.str_velocity_per_sec_kms = ad.close_approach_data[0].relative_velocity.kilometers_per_second;
                            astro.str_misses_Earth_by_kms = ad.close_approach_data[0].miss_distance.kilometers;       
                            astro.str_NASA_URL  = ad.nasa_jpl_url;
                            asteroidList.add(astro);
                        }
                        
                    }
                }
            }
        }
        
        
        //System.debug('asteroidList is:' + asteroidList);
        //System.debug('asteroidList.size() is:' + asteroidList.size());
        return asteroidList;
    }
    
    
    
}