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Start work on filtering logic

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This commit is contained in:
Derek Holloway
2025-09-02 22:31:05 -07:00
parent 72fb4f2536
commit 73c1e1ce98
10 changed files with 230 additions and 83 deletions
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src/Server/Services/DatabaseService/JobListing.cs
+61 -9
View File
@@ -7,21 +7,73 @@ using System.Data.Common;
namespace BoredCareers.Services.DatabaseService {
public partial class DatabaseService {
public async Task<JobListing[]> GetJobListingPage(int PageNumber, int CountPerPage) {
public async Task<JobListing[]> GetJobListingPage(int PageNumber, int CountPerPage, string[]? PostalCodes = null, string? CountryCode = null, string? JobType = null, bool? Remote = null, int? SalaryMin = null, int? SalaryMax = null ) {
List<JobListing> joblistings = new List<JobListing>();
using (MySqlConnection connection = GetConnection()) {
await connection.OpenAsync();
string command = @"
SELECT *
FROM JobListing
WHERE IsDeleted = FALSE
ORDER BY CreatedTime DESC
LIMIT @PageSize OFFSET @PageNumber;
";
MySqlCommand cmd = new MySqlCommand(command, connection);
string select = "SELECT * FROM JobListing";
string order = " ORDER BY CreatedTime DESC";
string limit = " LIMIT @PageSize OFFSET @PageNumber;";
List<string> Filters = new List<string>();
List<string> Parameters = new List<string>();
List<string> ParameterName = new List<string>();
if (PostalCodes != null) {
for (int i = 0; i < PostalCodes.Length; i++) {
Filters.Add("PostalCode");
Parameters.Add(PostalCodes[i]);
ParameterName.Add("@PostalCode" + i);
}
}
if (CountryCode != null) {
Filters.Add("Country");
Parameters.Add(CountryCode);
ParameterName.Add("@CountryCode");
}
if (JobType != null) {
Filters.Add("JobType");
Parameters.Add(JobType);
ParameterName.Add("@JobType");
}
if (Remote != null) {
Filters.Add("Remote");
Parameters.Add(Remote.Value.ToString());
ParameterName.Add("@Remote");
}
if (SalaryMin != null) {
Filters.Add("SalaryMin");
Parameters.Add(SalaryMin.Value.ToString());
ParameterName.Add("@SalaryMin");
}
if (SalaryMax != null) {
Filters.Add("SalaryMax");
Parameters.Add(SalaryMax.Value.ToString());
ParameterName.Add("@SalaryMax");
}
string filter = " WHERE IsDeleted = False";
for (int i = 0; i < Filters.Count; i++) {
if (Filters[i] == "PostalCode" && i != 0) {
filter += " OR ";
} else {
filter += " AND ";
}
filter += Filters[i] + " = " + ParameterName[i];
}
MySqlCommand cmd = new MySqlCommand(select + filter + order + limit, connection);
cmd.Parameters.AddWithValue("@PageSize", CountPerPage);
cmd.Parameters.AddWithValue("@PageNumber", (PageNumber - 1) * CountPerPage);
for (int i = 0; i < Filters.Count; i++) {
cmd.Parameters.AddWithValue( ParameterName[i], Parameters[i] );
}
using (DbDataReader reader = await cmd.ExecuteReaderAsync()) {
while (await reader.ReadAsync()) {
src/Server/Services/DatabaseService/Location.cs
+20 -49
View File
@@ -7,64 +7,35 @@ using System.Text;
namespace BoredCareers.Services.DatabaseService {
public partial class DatabaseService {
public async Task<Location?> GetLocation(string PostalCode, string CountryCode) {
using (MySqlConnection connection = GetConnection()) {
await connection.OpenAsync();
string command = @"
SELECT PostalCode, CountryCode, Latitude, Longitude, City
FROM PostalCodes
WHERE PostalCode = @PostalCode
AND CountryCode = @CountryCode;
";
MySqlCommand cmd = new MySqlCommand(command, connection);
cmd.Parameters.AddWithValue("@PostalCode", PostalCode);
cmd.Parameters.AddWithValue("@CountryCode", CountryCode);
using (DbDataReader reader = await cmd.ExecuteReaderAsync()) {
while (await reader.ReadAsync()) {
string _city = reader.GetString("City");
string _postalCode = reader.GetString("PostalCode");
string _countryCode = reader.GetString("CountryCode");
float _latitude = reader.GetFloat("Latitude");
float _longitude = reader.GetFloat("Longitude");
return new Location() {
City = _city,
PostalCode = _postalCode,
CountryCode = _countryCode,
Latitude = _latitude,
Longitude = _longitude
};
}
}
}
return null;
}
public async Task<Location[]> GetNearbyLocations(float Latitude, float Longitude, string CountryCode, float MaxDistanceKm) {
public async Task<Location[]> GetNearbyLocations(string PostalCode, string CountryCode, float MaxDistanceKm) {
List<Location> closePostalCodes = new List<Location>();
using (MySqlConnection connection = GetConnection()) {
await connection.OpenAsync();
string command = @"
SELECT PostalCode, CountryCode, Latitude, Longitude, City, (
6371 * acos(
cos(radians(@Latitude)) *
cos(radians(Latitude)) *
cos(radians(Longitude) - radians(@Longitude)) +
sin(radians(@Latitude)) *
sin(radians(Latitude))
)
) AS distance_km
FROM PostalCodes
WHERE countrycode = @CountryCode
SELECT
pc2.PostalCode,
pc2.CountryCode,
pc2.Latitude,
pc2.Longitude,
pc2.City,
(
6371 * acos(
cos(radians(pc1.Latitude)) *
cos(radians(pc2.Latitude)) *
cos(radians(pc2.Longitude) - radians(pc1.Longitude)) +
sin(radians(pc1.Latitude)) *
sin(radians(pc2.Latitude))
)
) AS distance_km
FROM PostalCodes pc1
JOIN PostalCodes pc2 ON pc2.CountryCode = 'us'
WHERE pc1.PostalCode = @PostalCode AND pc1.CountryCode = @CountryCode
HAVING distance_km <= @MaxDistanceKm
ORDER BY distance_km;
";
MySqlCommand cmd = new MySqlCommand(command, connection);
cmd.Parameters.AddWithValue("@Latitude", Latitude);
cmd.Parameters.AddWithValue("@Longitude", Longitude);
cmd.Parameters.AddWithValue("@PostalCode", PostalCode);
cmd.Parameters.AddWithValue("@CountryCode", CountryCode);
cmd.Parameters.AddWithValue("@MaxDistanceKm", MaxDistanceKm);