/// <summary>
/// GET: /Home/GetDistrictByCity
/// </summary>
/// <param name="cityId">City ID</param>
/// <returns>Task[ActionResult] with JSON contains list of Districts</returns>
public async Task <ActionResult> GetDistrictByCity(string cityId)
{
try
{
int tempCityId = 0;
// Check if city ID is null or not
if (!String.IsNullOrEmpty(cityId) && Int32.TryParse(cityId, out tempCityId))
{
districtList = await LocationUtil.LoadDistrictInCityAsync(tempCityId);
var result = (from d in districtList
select new
{
id = d.District_ID,
name = d.Type + Constants.WhiteSpace + d.District_Name
});
return(Json(result, JsonRequestBehavior.AllowGet));
}
else
{
// Return default value
districtList = new List <District>();
return(Json(districtList, JsonRequestBehavior.AllowGet));
}
}
catch (Exception exception)
{
LoggingUtil.LogException(exception);
return(RedirectToAction(Constants.SystemFailureHomeAction, Constants.ErrorController));
}
}
public async Task <ActionResult> SearchResult(HomeModel model, int page = 1)
{
List <HospitalEntity> hospitalList = null;
IPagedList <HospitalEntity> pagedHospitalList = null;
try
{
// Indicate which button is clicked
string button = Request[Constants.Button];
#region Normal Search
// Normal search form
if ((string.IsNullOrEmpty(button)) || Constants.NormalSearchForm.Equals(button))
{
ViewBag.SearchValue = model.SearchValue;
// Check if input search query is null or empty
if (!string.IsNullOrEmpty(model.SearchValue))
{
// Check if input search value is understandable
string[] suggestSentence = StringUtil.CheckVocabulary(model.SearchValue);
if (Constants.False.Equals(suggestSentence[0]))
{
ViewBag.SuggestionSentence = suggestSentence[1];
}
// Analyze to GIR query
await model.GIRQueryAnalyzerAsync(model.SearchValue);
// Search hospitals
hospitalList = await model.NormalSearchHospital();
pagedHospitalList = hospitalList.ToPagedList(page, Constants.PageSize);
// Search Query Statistic
DataModel.StoreSearchQuery(model.SearchValue, hospitalList.Count);
}
}
#endregion
#region Advanced Search
// Load list of cities
cityList = await LocationUtil.LoadCityAsync();
ViewBag.CityList = new SelectList(cityList, Constants.CityID, Constants.CityName);
// Load list of districts
districtList = await LocationUtil.LoadDistrictInCityAsync(model.CityID);
ViewBag.DistrictList = new SelectList(districtList, Constants.DistrictID, Constants.DistrictName);
// Load list of specialities
specialityList = await SpecialityUtil.LoadSpecialityAsync();
ViewBag.SpecialityList = new SelectList(specialityList, Constants.SpecialityID, Constants.SpecialityName);
// Load list of disease
diseaseList = new List <Disease>();
ViewBag.DiseaseList = new SelectList(diseaseList, Constants.DiseaseID, Constants.DiseaseName);
// Advanced search form
if (Constants.AdvancedSearchForm.Equals(button))
{
ViewBag.DiseaseName = model.DiseaseName;
hospitalList = await model.AdvancedSearchHospital(model.CityID, model.DistrictID,
model.SpecialityID, model.DiseaseName);
pagedHospitalList = hospitalList.ToPagedList(page, Constants.PageSize);
ViewBag.SearchType = Constants.AdvancedSearchForm;
}
#endregion
#region Location Search
List <SelectListItem> locationTypeListItem = new List <SelectListItem>()
{
new SelectListItem {
Value = "2", Text = "Nhập vị trí"
},
new SelectListItem {
Value = "1", Text = "Vị trí hiện tại"
}
};
ViewBag.LocationTypeList = new SelectList(locationTypeListItem, "Value", "Text", 2);
List <SelectListItem> radiusListItem = new List <SelectListItem>()
{
new SelectListItem {
Value = "0.3", Text = "300 mét"
},
new SelectListItem {
Value = "0.5", Text = "500 mét"
},
new SelectListItem {
Value = "1", Text = "1 km"
},
new SelectListItem {
Value = "3", Text = "3 km"
},
new SelectListItem {
Value = "5", Text = "5 km"
},
new SelectListItem {
Value = "10", Text = "10 km"
},
new SelectListItem {
Value = "15", Text = "15 km"
},
new SelectListItem {
Value = "20", Text = "20 km"
}
};
ViewBag.RadiusList = new SelectList(radiusListItem, "Value", "Text", 0.3);
// Location search form
if (Constants.LocationSearchForm.Equals(button))
{
ViewBag.SearchType = Constants.LocationSearchForm;
// Search hospitals
double lat = 0;
double lng = 0;
WebClient client = new WebClient();
string coordinate = model.Coordinate;
string position = model.Position;
if (!(0 < model.Radius && model.Radius <= 20))
{
model.Radius = 10;
}
double radius = model.Radius;
if (model.LocationType == 1)
{
if (coordinate != null)
{
if (coordinate.Split(',').Length > 1)
{
double.TryParse(coordinate.Split(',')[0], out lat);
double.TryParse(coordinate.Split(',')[1], out lng);
}
}
}
else if (model.LocationType == 2)
{
if (!string.IsNullOrEmpty(position))
{
string geoJsonResult = client.DownloadString(string.Concat(Constants.GeoCodeJsonQuery, position));
// Json.Net is really helpful if you have to deal
// with Json from .Net http://json.codeplex.com/
JObject geoJsonObject = JObject.Parse(geoJsonResult);
if (geoJsonObject.Value <string>("status").Equals("OK"))
{
lat = geoJsonObject["results"].First["geometry"]["location"].Value <double>("lat");
lng = geoJsonObject["results"].First["geometry"]["location"].Value <double>("lng");
}
}
}
hospitalList = await HomeModel.LocationSearchHospital(lat, lng, radius * 1000);
pagedHospitalList = hospitalList.ToPagedList(page, Constants.PageSize);
string distanceMatrixUrl = string.Concat("http://maps.googleapis.com/maps/api/distancematrix/json?origins=", lat, ",", lng, "&destinations=");
int index = 0;
foreach (HospitalEntity hospital in pagedHospitalList)
{
distanceMatrixUrl += (index == 0 ? string.Empty : "|") + hospital.Coordinate.Split(',')[0].Trim() + "," + hospital.Coordinate.Split(',')[1].Trim();
index = -1;
}
string dMatrixJsonResult = client.DownloadString(distanceMatrixUrl);
JObject dMatrixJsonObject = JObject.Parse(dMatrixJsonResult);
if (dMatrixJsonObject.Value <string>("status").Equals("OK"))
{
index = 0;
foreach (HospitalEntity hospital in pagedHospitalList)
{
hospital.Distance = dMatrixJsonObject["rows"].First["elements"].ElementAt(index++)["distance"].Value <double>("value");
}
model.Coordinate = lat + ", " + lng;
}
}
#endregion
// Transfer list of hospitals to Search Result page
ViewBag.HospitalList = pagedHospitalList;
ViewBag.JsonHospitalList = JsonConvert.SerializeObject(pagedHospitalList).Replace("\r\n", string.Empty);
NameValueCollection queryString = System.Web.HttpUtility.ParseQueryString(Request.Url.Query);
queryString.Remove("page");
ViewBag.Query = queryString.ToString();
if (hospitalList.Count == 0)
{
ViewBag.SearchValue = model.SearchValue;
}
ViewBag.FeedbackStatus = TempData["FeedbackStatus"];
ViewBag.FeedbackMessage = TempData["FeedbackMessage"];
}
catch (Exception exception)
{
LoggingUtil.LogException(exception);
return(RedirectToAction(Constants.SystemFailureHomeAction, Constants.ErrorController));
}
// Move to result page
return(View(model));
}