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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/Location.cs
+20 -49
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@@ -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);