public void TestValidSimpleZone()
{
string zone = "MIZ001";
Assert.IsTrue(_zoneLookup.IsZone(zone));
Assert.IsTrue(_zoneLookup.GetZipCodes(zone).Select(z => z.Code).SequenceEqual(new[] { "49805", "49901", "49918", "49950" }));
}
public IEnumerable <WeatherIncident> GetEvents(State state, string county, DateTime startDate, DateTime endDate, WeatherIncidentType?filter)
{
// hardcoded url that we scrape the data from
const string baseNcdcUrl = "http://www4.ncdc.noaa.gov/cgi-win/wwcgi.dll?wwevent~storms";
// the post parameters for making the call
string parameters =
string.Format("bdate={0}%2F{1}%2F{2}&edate={3}%2F{4}%2F{5}&STATE={6}&County={7}&ETYPE=*All&fscale=*All&hamt=&wspd=&injuries=&deaths=&pdamage=&cdamage=&Send=List+Storms"
, startDate.Month, startDate.Day, startDate.Year, endDate.Month, endDate.Day, endDate.Year, state.Abbreviation, county);
byte[] postData = Encoding.ASCII.GetBytes(parameters);
// make a POST request to the url with the parameters given
var request = WebRequest.Create(baseNcdcUrl) as HttpWebRequest;
request.Method = "POST";
request.ContentType = "application/x-www-form-urlencoded";
request.ContentLength = postData.Length;
// write the post data
Stream requestStream = request.GetRequestStream();
requestStream.Write(postData, 0, postData.Length);
requestStream.Close();
// load the html response
HtmlNode node;
using (var response = request.GetResponse() as HttpWebResponse)
{
var reader = new StreamReader(response.GetResponseStream());
var doc = new HtmlDocument();
doc.LoadHtml(reader.ReadToEnd());
// the description below is the best I could find in xpath that would describe the table of weather events
// we may want to pull the string out into a config file
node =
doc.DocumentNode.SelectSingleNode(
"//table[@summary='This Table displays the Events Query output by state and date.']");
}
if (node != null)
{
// This goes through each row and pulls out the location and event type
// This is fragile because we are depending on the html of the response
var returnValues =
(from weatherEvent in node.SelectNodes("tr")
where weatherEvent.SelectSingleNode("td[@headers]") != null
let location = weatherEvent.SelectSingleNode("td[@headers='h1']/a").InnerText.Trim()
select
new WeatherIncident(
Address.Search(_zoneLookup.IsZone(location) ? location : location + ", " + state.Abbreviation),
WeatherIncidentClassifier.Classify(
weatherEvent.SelectSingleNode("td[@headers='h4']").InnerText.Trim()),
DateTime.Parse(
weatherEvent.SelectSingleNode("td[@headers='h2']").InnerText.Trim()),
new Uri(
weatherEvent.SelectSingleNode("td[@headers='h1']/a").Attributes["href"].Value.Trim()))
);
if (filter != null)
{
returnValues =
(from weatherEvent in returnValues
where weatherEvent.EventType == filter
select weatherEvent);
}
return(returnValues);
}
return(new WeatherIncident[0]);
}