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));
}
/// <summary>
/// Geography Information Retrieval (WHAT - REL - WHERE)
/// Analyze input query to 3 different phases of What - Relation - Where
/// </summary>
/// <param name="inputQuery">inputQuery</param>
public async Task GIRQueryAnalyzerAsync(string inputQuery)
{
string what = string.Empty; // What phrase
string tempWhat = string.Empty; // Temporary value for What phrase
string relation = string.Empty; // Relation word
string tempRelation = string.Empty; // Temporary value for Relation word
string where = string.Empty; // Where phrase
string tempWhere = string.Empty; // Temporary value for Where phrase
bool isComplete = false; // Indicate if the process is complete or not
// Remove redundant white space between words in inputquery
inputQuery = Regex.Replace(inputQuery, @"\s+", " ");
// Create a list of tokens
List <string> tokens = StringUtil.StringTokenizer(inputQuery);
int sizeOfTokens = tokens.Count();
// Load relation word dictionary
List <string> wordDic = await DictionaryUtil.LoadRelationWordAsync();
// Load list of cities
List <City> cityList = await LocationUtil.LoadCityAsync();
// Load list of districts
List <District> districtList = await LocationUtil.LoadAllDistrictAsync();
// Check if the lists are load successfully
if ((wordDic == null) &&
(cityList == null) &&
(districtList == null))
{
return;
}
what = StringUtil.ConcatTokens(tokens, 0, sizeOfTokens - 1);
// Check every token in the list
for (int n = 0; n < sizeOfTokens; n++)
{
for (int i = n; i < sizeOfTokens; i++)
{
// Concate tokens to create a string with the original starting
// word is the first token, and this word is shift to left one index every n loop
// if relaton word is not found.
// New tokens is add to original token every i loop to check for valid relation word
tempRelation = StringUtil.ConcatTokens(tokens, n, i);
// Check if token string is matched with relation word in database
if (IsValidRelationWord(tempRelation, wordDic))
{
// If it matches, assign temporary What phrase value with
// the value of leading words before Relation word
tempWhat = inputQuery.Substring(0, inputQuery.IndexOf(tempRelation) - 1);
// Assign Where phrase value with the value of trailing
// words after Relation word
where = StringUtil.ConcatTokens(tokens, i + 1, sizeOfTokens - 1).Trim().ToLower();
// Check if Where phrase is matched with locaitons in database
// and handle Where phrase to locate exactly search locations
if (IsValidWherePhrase(where, cityList, districtList))
{
// Change status of isComplete varialbe
isComplete = true;
// If matches, assign Relation word is with the value
// of temporary relation
relation = tempRelation;
// Assign n value again to break the outside loop
n = sizeOfTokens;
break;
}
// Assign Relation word with the value of temporary relation
// every i loop
relation = tempRelation;
}
}
}
// Check if the process is completely finished
if (!isComplete)
{
// Handle query in case of input string is not well-formed
// with Relation word and Where phrase is not found.
// Auto check Where phrase with the first location value in input query,
// if Where phrase is valid, auto assign Relation word with default value.
if (string.IsNullOrEmpty(relation) && string.IsNullOrEmpty(where))
{
int i = 0;
// Take first location in input query string
// and handle Where phrase (if any) to locate exactly search locations
string firstLocation = TakeFirstLocationInQueryString(inputQuery, cityList, districtList);
if (!string.IsNullOrEmpty(firstLocation))
{
i = inputQuery.IndexOf(firstLocation.ToLower());
tempWhat = inputQuery.Substring(0, i);
if (string.IsNullOrEmpty(tempWhat))
{
where = firstLocation;
if (firstLocation.Length != inputQuery.Length)
{
tempWhat = inputQuery.Substring(firstLocation.Length).Trim().ToLower();
}
}
else
{
where = inputQuery.Substring(i).Trim().ToLower();
}
}
else
{
tempWhat = what;
relation = string.Empty;
where = string.Empty;
}
}
}
// Make sure What phrase have the value.
// At the worst case if the input query is not well-formed,
// assign What phrase with the input query
if (!string.IsNullOrEmpty(tempWhat))
{
what = tempWhat.Trim().ToLower();
}
// Check if What phrase is equal to Where phrase
if (what.Equals(where))
{
what = string.Empty;
}
string a = string.Format("[{0}][{1}][{2}]", what, relation, where);
int hospitalId = this.HospitalID;
string hospitalName = this.HospitalName;
int cityId = this.CityID;
string cityName = this.CityName;
int districtId = this.DistrictID;
string districtName = this.DistrictName;
int specialityId = this.SpecialityID;
string speacialityName = this.SpecialityName;
int diseaseId = this.DiseaseID;
string diseaseName = this.DiseaseName;
this.WhatPhrase = what;
}
public async Task <ActionResult> Index()
{
try
{
// Load list of cities
cityList = await LocationUtil.LoadCityAsync();
ViewBag.CityList = new SelectList(cityList, Constants.CityID, Constants.CityName);
// Load list of districts
districtList = new List <District>();
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);
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);
ViewBag.FeedbackStatus = TempData["FeedbackStatus"];
ViewBag.FeedbackMessage = TempData["FeedbackMessage"];
}
catch (Exception exception)
{
LoggingUtil.LogException(exception);
return(RedirectToAction(Constants.SystemFailureHomeAction, Constants.ErrorController));
}
return(View());
}