Add history endpoint and do some cleanup

Environment/Service/Data/Database.cs

@@ -47,7 +47,7 @@ public class Database(IConfiguration configuration)
     {
         await using var connection = CreateConnection();
 
-        var query = ResourceReader.GetString("ChrisKaczor.HomeMonitor.Environment.Service.Data.Queries.CreateReading.sql");
+        var query = ResourceReader.GetString("ChrisKaczor.HomeMonitor.Environment.Service.Data.Queries.CreateReading.psql");
 
         await connection.QueryAsync(query, message);
     }
@@ -56,8 +56,17 @@ public class Database(IConfiguration configuration)
     {
         await using var connection = CreateConnection();
 
-        var query = ResourceReader.GetString("ChrisKaczor.HomeMonitor.Environment.Service.Data.Queries.GetRecentReadings.sql");
+        var query = ResourceReader.GetString("ChrisKaczor.HomeMonitor.Environment.Service.Data.Queries.GetRecentReadings.psql");
 
         return await connection.QueryAsync<Readings>(query).ConfigureAwait(false);
     }
+
+    public async Task<IEnumerable<ReadingsGrouped>> GetReadingsHistoryGrouped(DateTimeOffset start, DateTimeOffset end, int bucketMinutes)
+    {
+        await using var connection = CreateConnection();
+
+        var query = ResourceReader.GetString("ChrisKaczor.HomeMonitor.Environment.Service.Data.Queries.GetReadingsHistoryGrouped.psql");
+
+        return await connection.QueryAsync<ReadingsGrouped>(query, new { Start = start, End = end, BucketMinutes = bucketMinutes }).ConfigureAwait(false);
+    }
 }

Environment/Service/Data/Queries/GetReadingsHistoryGrouped.psql

@@ -0,0 +1,20 @@
+SELECT
+  time_bucket('15 minute', time) AS bucket,
+  name,
+  ROUND(avg(temperature), 2) AS averageTemperature,
+  ROUND(avg(pressure), 2) AS averagePressure,
+  ROUND(avg(humidity), 2) AS averageHumidity,
+  ROUND(avg(luminance), 2) AS averageLuminance,
+  ROUND(avg(gas_resistance), 2) AS averageGasResistance,
+  ROUND(avg(color_temperature), 2) AS averageColorTemperature,
+  ROUND(avg(air_quality_index), 2) AS averageAirQualityIndex
+FROM
+  reading
+WHERE
+  time BETWEEN @Start AND @End
+GROUP BY
+  bucket,
+  name
+ORDER BY
+  bucket ASC,
+  name;